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Denka Company Limited

USPTO Granted Patents = 356

CIPO Patents = 5

EPO Patents = 397

Trademarks = 54

Forward Citations = 124

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447 inventors (with patents filed for the assignee):

Tomohiro Nomiyama (17 out of 21 patents)

Takeshi Miyakawa (16 out of 36 patents)

Shintaro Watanabe (15 out of 32 patents)

4. Toru Arai (15 out of 41 patents)

5. Hideyuki Emoto (15 out of 29 patents)

6. Hideki Hirotsuru (14 out of 29 patents)

7. Yosuke Ishihara (14 out of 15 patents)

8. Yusuke Takeda (13 out of 43 patents)

9. Daisuke Goto (13 out of 34 patents)

10. Yoshitaka Taniguchi (11 out of 13 patents)

11. Atsushi Takei (11 out of 11 patents)

12. Masahiro Konishi (11 out of 49 patents)

13. Takashi Kawasaki (10 out of 85 patents)

14. Atsushi Horihata (10 out of 10 patents)

15. Shogo Hagiwara (9 out of 13 patents)

Core Competencies:

Electroconductive Resin

LCP Extruded Film

Immunochromatographic Device

Phosphor Plate

Chloroprene Copolymer

Artificial Blood Vessel

Positive Electrode Composition

Heat-Conductive Resin

Cement Admixture

Silicon Nitride Circuit Board

Data Generation Apparatus

Carbon Nanofiber Composite

356 patents: Sort by Forward Citations

1. 12509535 - Polyvinyl alcohol-based polymer (2025-12-30),

2. 12497562 - Beta-sialon phosphor particle and light emitting device (2025-12-16),

3. 12493031 - Diagnostic testing device and diagnostic testing method (2025-12-09),

4. 12492279 - Chloroprene-based block copolymer, latex, latex composition, and rubber composition (2025-12-09),

5. 12480025 - Composition (2025-11-25),

6. 12467923 - Immunochromatographic device for extracting and measuring sugar chain antigen (2025-11-11),

7. 12466956 - Electroconductive resin composition and molded article of same (2025-11-11),

8. 12454088 - LCP extruded film and method for manufacturing the same, LCP extruded film for stretch treatment, LCP stretched film, heat-shrinkable LCP stretched film, insulating material for circuit substrate, and metal foil-clad laminate (2025-10-28),

9. 12448469 - Polyvinyl alcohol-based polymer (2025-10-21),

10. 12447662 - LCP extruded film and method for manufacturing the same, LCP extruded film for stretch treatment, LCP stretched film, heat-shrinkable LCP stretched film, insulating material for circuit substrate, and metal foil-clad laminate (2025-10-21),

11. 12447661 - LCP extruded film and method for manufacturing the same, LCP extruded film for stretch treatment, LCP stretched film, heat-shrinkable LCP stretched film, insulating material for circuit substrate, and metal foil-clad laminate (2025-10-21),

12. 12444322 - Simulated blood vessel and ulcer model using same (2025-10-14),

13. 12428594 - Phosphor plate and light emitting device (2025-09-30),

14. 12427704 - Production method for heat-resistant resin composition (2025-09-30),

15. 12421438 - Alumina powder, resin composition, and heat dissipation component (2025-09-23),

DENKA COMPANY LIMITED is a Japanese chemical company headquartered in Tokyo. Their diverse range of products includes chemicals, plastics, and electronics materials. With a strong focus on innovative technology, DENKA aims to contribute to sustainable development and improve the quality of life for people around the world.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

356 Patents

#207 in Tokyo

#456 in Japan

#2,496 in the World

Denka Company Limited

Forward Citations = 124

447 inventors:

Tomohiro Nomiyama (17 out of 21 patents)

Takeshi Miyakawa (16 out of 36 patents)

Shintaro Watanabe (15 out of 32 patents)

4. Toru Arai (15 out of 41 patents)

5. Hideyuki Emoto (15 out of 29 patents)

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