Company patents

ENEOS CORPORATION

ENEOS CORPORATION's patent strategy reveals a surprising shift away from traditional polymer-related innovations, with Polymer Additives, Polymer Synthesis (Polycondensation), and Polymer Compositions all showing significant declines of over 60% YoY in 2025 and zero patents so far in 2026. Concurrently, the company is rapidly expanding its focus on energy technologies, with Electrolysis & Electrochemistry growing by 55.6% in 2025 and Catalysts & Reactors experiencing a remarkable 150.0% growth in 2025, indicating an emerging priority in these areas.

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.

232 US filings (since 2023) · 12 categories · 35 themes

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)
Who else files here? →
61since 2023
+11.1%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 CompoundsElectrolysis & Electrochemistry
Who else files here? →
32since 2023
+22.2%YoY
Electrolyzer Durability & Control

Methods and systems for enhancing the operational lifespan, stability, and performance management of electrolyzers, including strategies for preventing degradation, restoring activity, and regulating operating conditions.

Electrolysis & Electrochemistry
Who else files here? →
26since 2023
+62.5%YoY
Sustainable Fuel & Hydrogen Production

Systems and methods for producing fuels, such as Sustainable Aviation Fuel (SAF), or hydrogen with a reduced carbon intensity, often leveraging alternative feedstocks, Fischer-Tropsch synthesis, or integrated energy recovery.

Petroleum / Hydrocarbon Refining
Who else files here? →
24since 2023
+33.3%YoY
Electrochemical Chemical Synthesis

Utilization of electrochemical processes to synthesize a variety of chemical products, materials, or to treat waste streams, by selectively promoting redox reactions of specific feedstocks beyond hydrogen or CO2 reduction.

Electrolysis & Electrochemistry
Who else files here? →
22since 2023
+80.0%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 CompositionsPolymer AdditivesPolymer Synthesis (Polymerization)
Who else files here? →
15since 2023
-33.3%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
Who else files here? →
14since 2023
-75.0%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)
Who else files here? →
13since 2023
n/a
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
Who else files here? →
11since 2023
0.0%YoY
Electrolyzer Cell Components

Design and engineering of non-catalytic parts within an electrolysis cell or stack, such as separators, gaskets, flow fields, porous transport layers, and manifold devices, to improve efficiency, sealing, or gas management.

Electrolysis & Electrochemistry
Who else files here? →
9since 2023
+66.7%YoY
CO2 Electroreduction Catalysts

Development of catalytic materials and membrane electrode assemblies (MEAs) specifically designed for the electrochemical reduction of carbon dioxide (CO2) or carbon monoxide (COx) into valuable chemicals or fuels.

Electrolysis & Electrochemistry
Who else files here? →
7since 2023
0.0%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)
Who else files here? →
7since 2023
+100.0%YoY
High-Pressure Electrolysis Systems

Engineering solutions for safely and efficiently operating electrolysis devices at elevated pressures, including specialized sealing, pressure regulation, and system integration for high-pressure gas generation and handling.

Electrolysis & Electrochemistry
Who else files here? →
6since 2023
+300.0%YoY
Catalytic Cracking & Regeneration

Processes and reactor designs for breaking down heavier hydrocarbon feedstocks into lighter, more valuable products using catalysts, including methods for regenerating spent catalysts through coke burning or other means.

Petroleum / Hydrocarbon Refining
Who else files here? →
5since 2023
new
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.

Non-metallic Inorganic CompoundsCatalysts & Reactors
Who else files here? →
5since 2023
-50.0%YoY
Hydroprocessing & Desulfurization

Chemical processes that utilize hydrogen to remove impurities like sulfur, nitrogen, and oxygen from hydrocarbon feedstocks, or to saturate aromatic compounds, often employing specific catalysts and process conditions.

Petroleum / Hydrocarbon Refining
Who else files here? →
5since 2023
-50.0%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)
Who else files here? →
5since 2023
n/a
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.

Non-metallic Inorganic CompoundsBatteries & Fuel Cells
Who else files here? →
5since 2023
n/a
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
Who else files here? →
5since 2023
n/a
Advanced Tire Component Fabrication

Specialized manufacturing processes and material compositions for producing various components of tires, focusing on properties such as weight reduction, self-sealing capabilities, or structural reinforcement, often involving winding or layering techniques.

Vehicle Tires
Who else files here? →
4since 2023
0.0%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)
Who else files here? →
4since 2023
n/a
Waste Plastic Pyrolysis & Upgrading

Technologies focused on converting waste plastics, residual polymers, or aromatic waste streams into valuable hydrocarbon liquids, gases, or chemical feedstocks through thermal or catalytic pyrolysis, followed by upgrading and separation processes.

Petroleum / Hydrocarbon Refining
Who else files here? →
3since 2023
new
Wellbore Treatment Fluids

Specialized fluid compositions, including additives and inhibitors, used in oil and gas exploration and production for purposes like drilling, fracturing, cementing, corrosion inhibition, and formation stimulation.

Functional Materials (LCD, Lubricants)
Who else files here? →
3since 2023
new
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 Synthesis (Polycondensation)
Who else files here? →
3since 2023
0.0%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
Who else files here? →
2since 2023
new
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
Who else files here? →
2since 2023
n/a
Advanced Polymerization Processesfiltered

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)
Who else files here? →
2since 2023
n/a
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)
Who else files here? →
2since 2023
n/a
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)
Who else files here? →
2since 2023
n/a
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
Who else files here? →
1since 2023
new
Non-Pneumatic Tire Structures

Design and construction of tires that do not rely on air pressure for support, often employing lattice structures, spring elements, or other resilient materials to provide load-bearing and shock-absorbing capabilities.

Vehicle Tires
Who else files here? →
1since 2023
new
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 Compositions
Who else files here? →
1since 2023
n/a
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 & ReactorsSeparation Processes (Filtration, Distillation)
Who else files here? →
1since 2023
n/a
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
Who else files here? →
1since 2023
n/a
Gas Stream Purification

Technologies and systems for removing unwanted components or separating desired gases from a mixed gas stream, including adsorption, absorption, and membrane-based methods.

Separation Processes (Filtration, Distillation)
Who else files here? →
1since 2023
n/a

Patents

Page 1 of 1