Company patents

LG Chem, Ltd.

LG Chem, Ltd. demonstrates a surprising shift in its patent strategy, with a significant emerging focus on Organic Electronics (OLED), which saw a remarkable 103.2% year-over-year growth in 2024, representing 14.5% of its total portfolio. Concurrently, the company appears to be shifting priorities away from Batteries & Fuel Cells, experiencing a substantial decline of 42.6% in 2024 and a further 25.9% in 2025, despite it still being a notable 14.0% of their portfolio.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

3,019 US filings (since 2023) · 12 categories · 53 themes

Sustainable Polymer Materials

Development and application of polymer compositions designed for reprocessability, recyclability, or incorporating sustainable additives, often featuring reversible bonds or bio-based components.

Polymer AdditivesPolymer Working & CompoundingPolymer Synthesis (Polycondensation)
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575since 2023
-5.4%YoY
OLED Emitter Materials

Development and optimization of organic chemical compounds and their structures, including guest-host systems and metal complexes, used within the emission layer to achieve specific light emission characteristics such as color, efficiency, and operational lifetime.

Organic Electronics (OLED)Functional Materials (LCD, Lubricants)
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457since 2023
-44.7%YoY
Functional Organic Materials

Synthesis and application of organic compounds designed to impart specific functionalities in material science, such as photosensitivity or charge transport, for electronic or optical devices.

Acyclic / Carbocyclic Compounds
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413since 2023
-44.0%YoY
High-Performance Thermally Stable Resins

Polymer compositions engineered for enhanced heat resistance, thermal stability in molten states, or improved processability at high temperatures, often involving specific copolymers, blends, or stabilizing additives for applications in electronics or automotive.

Polymer Compositions
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332since 2023
-16.8%YoY
Polymer Composites with Functional Fillers

Polymer compositions incorporating inorganic or organic filler materials to impart specific functional properties such as thermal conductivity, flame retardancy, electrical conductivity, or enhanced mechanical strength and dimensional stability.

Polymer Synthesis (Polymerization)Polymer CompositionsPolymer AdditivesPolymer Working & Compounding
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325since 2023
-16.3%YoY
Advanced Polymerization Processes

Novel methods and reactor designs for polymer synthesis, focusing on improving efficiency, achieving continuous production, or controlling specific polymer architectures and product morphologies like particle size or sheet formation.

Polymer Synthesis (Polymerization)
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315since 2023
-11.3%YoY
Advanced Thermoplastic Synthesis

Synthesis and modification of high-performance thermoplastic polymers, such as poly(arylene ether ketone) (PAEK) or polycarbonates, to achieve enhanced thermal stability, mechanical strength, or specific processing characteristics.

Polymer Synthesis (Polycondensation)
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310since 2023
-7.3%YoY
Display Panel Manufacturing & Encapsulation

Techniques and structural designs for fabricating the physical layers of an OLED display, including material deposition, patterning, and methods to protect the active organic layers from environmental degradation like moisture and oxygen.

Organic Electronics (OLED)
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243since 2023
-44.3%YoY
Catalytic Olefin Polymerization

Methods and catalyst systems, often supported (e.g., on silica or alumina), for the synthesis of polyolefins like polyethylene and polypropylene, focusing on controlling molecular weight, distribution, and polymer morphology.

Polymer Synthesis (Polymerization)
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197since 2023
+27.1%YoY
Battery Electrode Coating & Slurry

Slurry compositions and coating processes for battery electrodes, including binder/active-material slurries, surface coating layers, and electrode-to-foil adhesion for cathode and anode.

Batteries & Fuel Cells
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183since 2023
-15.4%YoY
Lithium Compound Synthesis for Batteries

Methods for synthesizing high-purity lithium compounds, such as lithium carbonate, lithium sulfide, or composite salts, specifically optimized for use in battery electrodes or electrolytes.

Non-metallic Inorganic Compounds
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155since 2023
-16.7%YoY
Polymer Particle and Powder Production

Methods for creating fine polymer particles, powders, or microspheres with controlled size, morphology, and distribution, used as raw materials or for specific applications.

Polymer Working & Compounding
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145since 2023
-4.3%YoY
Biomedical Polymer Formulations

Polymer compositions tailored for medical and biological applications, including implantable devices, drug delivery systems, and diagnostic tools, emphasizing properties like biocompatibility, hydrolysis resistance, optical clarity, and specific mechanical characteristics.

Polymer Synthesis (Polymerization)Polymer Compositions
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137since 2023
+39.4%YoY
Lithium Battery Anode Materials

Active anode materials and manufacturing techniques for rechargeable lithium-ion batteries, including silicon-carbon composites, graphite, lithium-metal anodes, and electrode coating processes that improve capacity, cycle life, and rate capability.

Batteries & Fuel CellsNon-metallic Inorganic Compounds
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133since 2023
-32.5%YoY
Polymer Film and Membrane Fabrication

Techniques for manufacturing thin polymer layers, sheets, or multi-layer structures, often optimized for specific properties such as flexibility, barrier function, filtration, or mechanical strength.

Polymer Working & Compounding
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110since 2023
-8.3%YoY
Battery Material Recovery

Processes and apparatus for disassembling spent batteries and recovering valuable materials (e.g., metals, electrolytes, plastics) through mechanical, chemical, or electrochemical methods for reuse or sustainable disposal.

Batteries & Fuel Cells
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103since 2023
0.0%YoY
Advanced Adsorbent & Separation Media

Development of materials with tailored porosity, surface chemistry, or structure, such as metal-organic frameworks (MOFs), zeolites, or superficially porous particles, for selective adsorption, ion exchange, or chromatographic separations.

Catalysts & Reactors
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100since 2023
+15.4%YoY
Industrial Organic Synthesis

Methods and apparatus for the efficient and selective production of organic compounds, including amines, acids, and esters, often involving catalytic or continuous processes and purification steps.

Acyclic / Carbocyclic Compounds
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97since 2023
0.0%YoY
Photopolymerization for Device Fabrication

Light-initiated polymerization processes used to create structures, coatings, or components, particularly for electronic devices, displays, or additive manufacturing, often involving photoinitiators and specific monomer/oligomer compositions.

Polymer Synthesis (Polymerization)
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81since 2023
-18.2%YoY
Display Optical Enhancements

Components and techniques aimed at improving the visual quality of OLED displays, such as color accuracy, contrast, brightness uniformity, and reducing reflections or glare through optical layers and coatings.

Organic Electronics (OLED)
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72since 2023
-59.4%YoY
Liquid Crystal Compositions

Mixtures of liquid crystal compounds and other additives, such as monomers or carbon black, designed to achieve specific optical, electrical, or physical properties for use in liquid crystal displays (LCDs) or other electro-optical devices.

Functional Materials (LCD, Lubricants)
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71since 2023
+21.4%YoY
Hydrogen Production Catalysis

Catalytic processes and novel catalyst materials designed to efficiently produce hydrogen gas from various feedstocks, including hydrocarbons (e.g., methane, natural gas) and ammonia.

Non-metallic Inorganic Compounds
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67since 2023
-5.0%YoY
Dynamic & Reversible Polymer Networks

Polymers incorporating reversible bonds or crosslinks that enable reprocessing, self-healing, or tunable mechanical properties, often responding to stimuli like heat, light, or pH for de-crosslinking and re-crosslinking.

Polymer Synthesis (Polymerization)
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63since 2023
+4.8%YoY
Polymers for Electronic Devices

Synthesis and formulation of polymers, such as epoxy resins, polyimides, or ionic binders, tailored for specific functions in electronic components like sealing, insulation, or energy storage.

Polymer Synthesis (Polycondensation)
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63since 2023
-51.9%YoY
Elastomer Formulations for Performance

Development of rubber and elastomer compositions, often involving specific polymer blends, additives (e.g., process oils, reinforcing agents), and cure packages, to achieve desired mechanical properties like abrasion resistance, wet grip, shear durability, or flexibility for demanding applications.

Polymer Compositions
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63since 2023
-53.8%YoY
Battery Pack Mechanical Design

Focuses on the structural integrity, housing, mounting, and physical integration of battery cells into robust and protected packs within electric vehicles, including manufacturing considerations.

Batteries & Fuel Cells
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62since 2023
-91.7%YoY
Targeted Small Molecule Therapeutics

Design and synthesis of acyclic or carbocyclic organic compounds that selectively modulate specific biological targets or pathways for the treatment of diseases.

Heterocyclic Compounds (Pharma)Acyclic / Carbocyclic Compounds
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54since 2023
-81.2%YoY
Novel Catalyst Materials

Development and synthesis of catalysts with unique compositions or structures, such as medium entropy alloys, metal foam-supported catalysts, layered catalytic articles, or high-entropy oxides, to enhance activity, selectivity, or stability in chemical reactions.

Catalysts & Reactors
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50since 2023
+142.9%YoY
Thermally Conductive Additives

Materials added to polymers to modify their thermal transfer properties, typically increasing conductivity for heat dissipation in applications like electronics or battery packs.

Polymer Additives
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46since 2023
-42.1%YoY
Battery Management Systems

Software, algorithms, and associated hardware for monitoring, controlling, and optimizing battery performance, safety, and lifespan, including charge/discharge cycles, thermal regulation, and system integration.

Batteries & Fuel Cells
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44since 2023
n/a
Solid-State Battery Manufacturing

Process and equipment for producing solid-state battery cells, including solid electrolyte synthesis (sulfide/oxide/polymer), thin-film deposition, lamination, sintering, dry-electrode fabrication, and stacking under controlled atmosphere.

Batteries & Fuel Cells
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40since 2023
-55.6%YoY
Reactor System Design & Optimization

Engineering approaches to improve the efficiency, control, and performance of chemical reactors, encompassing continuous processes, heat exchange integration, and specialized reactor configurations for various chemical transformations.

Catalysts & Reactors
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39since 2023
-70.6%YoY
Electronics Encapsulation & Sealing

Materials and processes for hermetic encapsulation, conformal coating, optical chip sealing, and stretchable conductors for electronic and optoelectronic devices.

Organic Electronics (OLED)
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33since 2023
-46.2%YoY
Functionalized Polysiloxanes

Synthesis and modification of polysiloxane polymers to introduce specific functional groups or structures, enhancing properties for applications like composites, coatings, biomedical uses, or powder treatment.

Polymer Synthesis (Polycondensation)
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31since 2023
-41.7%YoY
Bio-derived Chemical Production

Methods for producing organic chemicals from biomass or through fermentation processes, often focusing on carbohydrates or fatty acid derivatives for food, health, or industrial applications.

Acyclic / Carbocyclic Compounds
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30since 2023
-28.6%YoY
High-Barrier Packaging Films

Multi-layer polymer films engineered to provide superior barrier properties against gases (e.g., oxygen), moisture, or aromas, often incorporating heat-sealing or resealing mechanisms for food and product preservation.

Polymer Compositions
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26since 2023
+71.4%YoY
Adhesion and Curing Modifiers

Substances incorporated into polymer systems to control or enhance adhesive properties, cross-linking reactions, or processing characteristics such as mold release and flow.

Polymer Additives
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26since 2023
+200.0%YoY
Smart/Responsive Polymer Materials

Polymer compositions designed to change their properties (e.g., shape, optical transmittance, solubility) in response to external stimuli such as pH, temperature, light, or chemical presence, enabling applications in sensors, smart windows, or controlled release.

Polymer Compositions
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26since 2023
0.0%YoY
Flexible/Foldable Device Structures

Engineering solutions for creating electronic devices with bendable, foldable, or stretchable form factors, often involving hinges, flexible displays, and sliding mechanisms to enable dynamic physical configurations.

Organic Electronics (OLED)
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24since 2023
-63.6%YoY
Functional Coatings and Surface Modifiers

Additives or compositions specifically formulated for surface application or modification to impart protective, decorative, or specialized functional properties to polymer products.

Polymer Additives
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21since 2023
+28.6%YoY
Chemical Synthesis of Drug Intermediates

Processes and methodologies for the efficient and scalable preparation of complex heterocyclic compounds and their precursors, including specific reaction conditions, purification techniques, and intermediate compounds.

Heterocyclic Compounds (Pharma)
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20since 2023
-92.9%YoY
Urethane/Urea Polymerization

Methods for synthesizing polyurethanes and polyureas, including non-isocyanate routes, using various monomers, catalysts, and curing agents, often for foams, coatings, or adhesives.

Polymer Synthesis (Polycondensation)
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17since 2023
+20.0%YoY
Integrated Touch Sensors

Methods and structures for incorporating touch sensing capabilities directly into OLED display panels, typically involving conductive layers and insulating layers within or on top of the display stack.

Organic Electronics (OLED)
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12since 2023
-71.4%YoY
Carbon Dioxide Capture & Conversion

Technologies and materials for capturing carbon dioxide from gas streams and subsequently converting it into valuable chemical products or materials, rather than simply storing it.

Catalysts & ReactorsNon-metallic Inorganic Compounds
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12since 2023
-50.0%YoY
Emerging Contaminant Removal

Specific techniques and materials developed to remove persistent or difficult-to-treat pollutants from water, such as per- and polyfluoroalkyl substances (PFAS), micropollutants, or specific industrial chemicals.

Catalysts & Reactors
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11since 2023
0.0%YoY
Targeted Protein Degradation

Development of small molecules, often bifunctional (e.g., PROTACs) or molecular glues, that induce the ubiquitin-proteasome system or autophagy to selectively degrade specific disease-causing proteins.

Heterocyclic Compounds (Pharma)
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11since 2023
-85.7%YoY
Functional Hydrogels

Synthesis and application of crosslinked polymer networks designed to swell in water, often for medical, sensing, or smart material applications, exhibiting properties like hydrolysis resistance, thermochromism, or radiation protection.

Polymer Working & Compounding
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10since 2023
0.0%YoY
API Solid Form Engineering

Techniques for preparing and characterizing specific solid forms, such as crystal forms, salts, co-crystals, or amorphous forms, of active pharmaceutical ingredients to optimize properties like stability, solubility, and bioavailability.

Heterocyclic Compounds (Pharma)
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10since 2023
-85.7%YoY
Silicon-based Functional Materials

Synthesis and processing of silicon and silicon carbide materials in various forms (e.g., particles, nanowires, films) for applications beyond traditional semiconductors, such as battery components, refractories, or advanced electronics.

Non-metallic Inorganic Compounds
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10since 2023
-75.0%YoY
Polymer Thermal Stability & Flame Retardancy

Additives that enhance a polymer's resistance to thermal degradation, high temperatures, or ignition, including flame retardants and heat stabilizers for improved safety and durability.

Polymer Additives
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9since 2023
+300.0%YoY
Phenolic Epoxy Resins

Synthesis and formulation of epoxy resins, often derived from phenolic precursors like cardanol and vanillin, for applications requiring specific thermal, mechanical, or electrical properties.

Polymer Synthesis (Polycondensation)
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8since 2023
-50.0%YoY
EV Thermal Management Systems

Systems designed to manage the temperature of multiple components in electric or hybrid vehicles, such as batteries, electric motors, power electronics, and the passenger cabin, often using shared or interconnected cooling/heating circuits.

Batteries & Fuel Cells
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5since 2023
new
Specialty Solvents and Coolants

Formulated liquid compositions designed for specific industrial applications, such as non-flammable cleaning, thermal management in electronics, or as low-viscosity, high-flash-point base fluids.

Functional Materials (LCD, Lubricants)
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5since 2023
new

Patents

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