Company patents

AGC Inc.

AGC Inc's patent strategy reveals a surprising, albeit recent, shift towards emerging technologies, with Batteries & Fuel Cells experiencing a remarkable 233.3% year-over-year growth in 2024 and Polymer Synthesis (Polymerization) showing a strong 70.8% growth in 2025, despite a general decline in patent filings across most categories so far in 2026. While Glass & Glass-Ceramics remains its largest category at 23.8% of its portfolio, the significant growth in areas like Optical Elements & Systems (up 48.9% in 2025) and Antennas (up 92.0% in 2024) suggests a strategic diversification beyond its traditional materials focus.

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.

1,238 US filings (since 2023) · 12 categories · 50 themes

Advanced Glazing & Optical Laminates is up +26.4% YoY. Worth a look.
Glass Surface Functionalization

Application of coatings, layers, or chemical treatments to the surface of glass articles to impart specific functionalities such as UV blocking, anti-whitening, hydrophobicity, or adhesion for subsequent layers.

Glass & Glass-Ceramics
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217since 2023
-11.9%YoY
Thin & Flexible Glass Substrates

Manufacturing and processing techniques for producing ultra-thin glass articles, often with enhanced flexibility and mechanical properties, suitable for use as substrates in electronic displays, foldable devices, or other advanced electronics.

Glass & Glass-Ceramics
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197since 2023
-13.1%YoY
Advanced Glazing & Optical Laminates

Layered glass or film structures designed to optimize optical (e.g., light transmission, reflection, diffusion) and/or thermal (e.g., insulation, heat reflection/absorption) performance in windows, displays, and lighting applications.

Layered Products (Laminates, Films)
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190since 2023
+26.4%YoY
Optical Glass Compositions

Novel glass formulations, often doped with rare-earth elements or specific metal oxides, designed to achieve desired optical properties such as refractive index, light transmittance, polarization, or amplification.

Glass & Glass-Ceramics
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133since 2023
+2.7%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)Coating Compositions (Paints, Inks)
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115since 2023
+81.5%YoY
Chemically Strengthened Glass

Glass articles treated with ion exchange or other chemical processes to induce a surface compressive stress layer, enhancing mechanical strength, scratch resistance, and impact toughness.

Glass & Glass-Ceramics
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94since 2023
-7.4%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.

Coating Compositions (Paints, Inks)
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75since 2023
+5.3%YoY
Integrated & Embedded Antennas

Design and manufacturing techniques for incorporating antenna structures directly into electronic devices, product housings, or materials, often under constraints of space, aesthetics, or environmental factors.

Antennas
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75since 2023
-60.0%YoY
Advanced Mask Technologies

Innovations in the design, materials, and manufacturing of lithography masks, including reflective masks, programmable masks, and defect mitigation strategies, to enable finer feature patterning and process control.

Photolithography
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74since 2023
-15.2%YoY
EUV Lithography Systems

Components, processes, and methods specifically designed for Extreme Ultraviolet (EUV) lithography, including light sources, reflective optics, masks, pellicles, and contamination control mechanisms.

Photolithography
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73since 2023
-15.2%YoY
Glass-Ceramic Formation

Methods for producing glass-ceramic articles through controlled nucleation and crystallization processes, often involving specific thermal treatments to achieve desired microstructures and properties like strength or dimensional stability.

Glass & Glass-Ceramics
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73since 2023
+47.1%YoY
Multi-Band & Broadband Antenna Design

Antennas engineered to operate effectively across a wide continuous range of frequencies (broadband) or multiple distinct frequency bands, often requiring specific radiating element geometries or impedance matching circuits.

Antennas
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66since 2023
-55.2%YoY
Antenna Isolation & Interference Mitigation

Techniques and structures used to reduce unwanted electromagnetic coupling, scattering, or interference between multiple antennas, different frequency bands, or sensitive electronic components within a device.

Antennas
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53since 2023
-5.6%YoY
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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52since 2023
+22.2%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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48since 2023
+55.6%YoY
Vacuum Insulated Glass Panels

Design and manufacturing of multi-pane glass units with an evacuated gap and specialized sealing technologies to provide superior thermal insulation for architectural or appliance applications.

Glass & Glass-Ceramics
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44since 2023
-35.7%YoY
Flexible Electronic Films & Electrodes

Thin, multi-layered films and structures specifically designed for electronic applications, including flexible substrates for devices, display panel components, and active material layers for battery electrodes.

Layered Products (Laminates, Films)
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34since 2023
+25.0%YoY
Phased Array & Beamforming Antennas

Systems and methods for electronically steering or shaping antenna beams by controlling the phase and amplitude of signals fed to individual elements in an array, including calibration techniques and multi-antenna configurations.

Antennas
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33since 2023
-56.2%YoY
Advanced Curing Chemistries

Novel formulations and mechanisms for initiating or controlling the polymerization and cross-linking of adhesives, including dual-curing systems, radical polymerization, and partial curing for tailored material properties.

Coating Compositions (Paints, Inks)
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33since 2023
-41.7%YoY
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.

Coating Compositions (Paints, Inks)Polymer Synthesis (Polycondensation)
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30since 2023
+71.4%YoY
Glass for Energy Storage

Development of specific glass compositions, such as phosphate glasses, for use as active materials or electrolytes in energy storage devices like metal-ion accumulators and batteries.

Glass & Glass-Ceramics
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25since 2023
-12.5%YoY
Substrate Patterning & Processing

Methods and equipment for applying photoresist uniformly onto wafers, forming patterns through various exposure techniques (e.g., direct imaging, multi-exposure), and integrating patterned layers into semiconductor structures or packaging.

Photolithography
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22since 2023
+16.7%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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20since 2023
-12.5%YoY
Reconfigurable Intelligent Surfaces (RIS)

Technologies enabling dynamic control over electromagnetic wave propagation using arrays of passive or active elements (unit cells) to reflect, refract, or absorb signals, often for channel optimization or energy efficiency.

Antennas
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19since 2023
+150.0%YoY
Polymerization Catalysts & Modifiers

Organometallic or organosilicon compounds used as catalysts to facilitate polymerization reactions, such as olefin metathesis, or as crosslinkers and modifiers to enhance the properties of polymer compositions like silicones.

Acyclic / Cyclic Compounds (Other Elements)
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19since 2023
new
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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18since 2023
+50.0%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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16since 2023
+200.0%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)
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16since 2023
+250.0%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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16since 2023
+100.0%YoY
CMP Slurry Formulations

Abrasive slurry compositions used in semiconductor manufacturing for planarizing wafer surfaces, typically containing abrasive particles and chemical additives to achieve specific material removal rates and selectivity.

Functional Materials (LCD, Lubricants)
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15since 2023
+66.7%YoY
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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15since 2023
+33.3%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)
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14since 2023
-20.0%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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13since 2023
-75.0%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.

Layered Products (Laminates, Films)
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9since 2023
0.0%YoY
Chemical Mechanical Planarization & Wet Surface Treatment

Processes involving chemical and mechanical forces to planarize surfaces (CMP) or wet chemical treatments for cleaning, etching, or material removal, often utilizing specialized compositions, nozzles, or fluid management systems.

Semiconductor Manufacturing Process
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7since 2023
+100.0%YoY
Temporary Wafer Bonding & Debonding

Methods for temporarily attaching a wafer or substrate to a carrier for thinning, dicing, or other processing, followed by controlled debonding, often using light-sensitive resins, temporary adhesives, or roughened interfaces.

Semiconductor Manufacturing Process
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7since 2023
0.0%YoY
Advanced Optical Imaging & Lens Design

Development of sophisticated optical lens assemblies and computational methods to achieve high-resolution, precise, or specialized imaging, often for medical or scientific applications.

Optical Elements & Systems
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6since 2023
new
Integrated Display & Illumination

Systems that combine light sources, waveguides, and display elements into unified products for backlighting, automotive applications, general lighting, or color-corrected displays.

Optical Elements & Systems
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6since 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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5since 2023
+100.0%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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4since 2023
+300.0%YoY
Advanced Drug Delivery Systems

Development of lipid-based nanoparticles, liposomes, or other molecular platforms to encapsulate and deliver therapeutic agents, particularly nucleic acids, to target tissues or improve pharmacokinetics.

Acyclic / Cyclic Compounds (Other Elements)
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4since 2023
+100.0%YoY
Metasurface & Diffractive Optics

Engineering of artificial subwavelength structures (meta-atoms) to create metasurfaces that manipulate light properties (phase, polarization, wavelength) for multi-functional optical devices.

Optical Elements & Systems
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4since 2023
n/a
Wafer Handling and Process Environment Control

Systems and methods for automated substrate transport, precise positioning, temperature regulation, and chamber environment management to ensure process stability, uniformity, and yield in semiconductor manufacturing.

Semiconductor Manufacturing Process
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4since 2023
n/a
Wearable Display Optics

Optical systems and components specifically designed for head-mounted displays, augmented reality (AR) glasses, and virtual reality (VR) headsets, focusing on image projection, waveguide integration, and display durability.

Optical Elements & Systems
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3since 2023
n/a
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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2since 2023
+100.0%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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2since 2023
new
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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2since 2023
n/a
Optical Fiber Sensing Systems

Systems and methods that utilize optical fibers as sensing elements or for transmitting sensing signals, often for distributed monitoring of environmental conditions, phase changes, or integrating sensing with communication.

Optical Elements & Systems
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1since 2023
new
Photonic Integration & Interconnects

The design and manufacturing of integrated circuits that combine optical and electronic components, particularly for high-speed data communication between processors and memory.

Optical Elements & Systems
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1since 2023
n/a
Fiber-Reinforced Structural Composites

Multi-layered materials incorporating fiber layers (e.g., carbon, non-carbon, fabric, mesh) within a polymer or ceramic matrix to achieve enhanced mechanical properties such as strength, stiffness, impact resistance, or tailored hardness for demanding structural applications.

Layered Products (Laminates, Films)
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1since 2023
n/a

Patents

Showing 21-30 of 1858

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