Company patents

TOYO SEIKAN GROUP HOLDINGS, LTD.

TOYO SEIKAN GROUP HOLDINGS, LTD. surprisingly shows a strong emerging focus in Bioreactors / Cell Culture Apparatus, which represents 22.7% of its portfolio and saw a significant 71.4% year-over-year growth in 2025, despite a partial decline so far in 2026. This contrasts with a shifting priority in Polymer Additives, which declined by 66.7% in 2025 and saw a 100.0% decline so far in 2026, indicating a strategic pivot away from certain polymer-related innovations.

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.

110 US filings (since 2023) · 11 categories · 18 themes

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)Containers & PackagingPolymer Compositions
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21since 2023
-45.5%YoY
3D Cell & Organoid Culture

Techniques and apparatus for cultivating cells in three-dimensional structures, including organoids, tissue models, and scaffolds, often involving microfluidics, specialized matrices, or mechanical stimulation to mimic in vivo conditions.

Bioreactors / Cell Culture Apparatus
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20since 2023
+83.3%YoY
Specialized Culture Substrates & Scaffolds

Development of novel materials, surface patterns, or structural supports designed to enhance cell adhesion, proliferation, differentiation, or tissue formation, including hydrogels and patterned surfaces.

Bioreactors / Cell Culture Apparatus
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19since 2023
+150.0%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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14since 2023
-71.4%YoY
Multi-material Product Integration & Finishing

Techniques for combining multiple materials or layers, often with specialized surface treatments, coatings, or assembly methods, to create functional or aesthetically enhanced plastic articles, including consumer goods and encapsulated electronics.

Plastics Shaping & Molding
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10since 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 Working & CompoundingPolymer Additives
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7since 2023
0.0%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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5since 2023
new
Automated Bioreactor Control

Systems and methods for automated monitoring and dynamic adjustment of environmental parameters (e.g., pH, temperature, oxygen, nutrients) and fluid handling within bioreactors to optimize cell/tissue growth or product synthesis.

Bioreactors / Cell Culture Apparatus
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4since 2023
0.0%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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4since 2023
0.0%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.

Polymer AdditivesPolymer Synthesis (Polycondensation)
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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)
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4since 2023
-50.0%YoY
Integrated Dispensing Mechanisms

Containers or packaging components featuring active mechanisms for controlled release, preparation, or delivery of their contents, such as liquids, bulk materials, volatile compounds, or single-serve portions.

Containers & Packaging
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3since 2023
new
Functional Coatings and Surface Modifiersfiltered

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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3since 2023
new
Biocide Formulation & Delivery Systems

Technologies focused on enhancing the stability, efficacy, spread, or targeted application of biocidal active ingredients through specialized carriers, adjuvants, encapsulation, or physical forms (e.g., gels, spray-dried particles).

Biocides & Pesticides
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3since 2023
new
Cell Therapy & Bioproduction Processes

Methods and apparatus specifically tailored for the expansion, differentiation, or genetic modification of cells for therapeutic applications (e.g., CAR T cells, progenitor cells) or for the production of specific biological products (e.g., cultured fat, RNA).

Bioreactors / Cell Culture Apparatus
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3since 2023
-50.0%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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3since 2023
n/a
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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2since 2023
n/a
Fiber Composite Layup & Curing

Methods and tooling for forming structural components from fibrous materials impregnated with resin, involving processes like prepreg handling, resin infusion, and co-bonding during curing.

Plastics Shaping & Molding
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1since 2023
new

Patents