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For the Inventor, By the Inventor

Tokyo, Japan

Zeon Corporation


USPTO Granted Patents = 1,290

% Expired Patents = 16.4



Trademarks = 16

Forward Citations = 2,177

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758 inventors (with patents filed for the assignee):

goldMedal Kei Sakamoto (43 out of 68 patents)

silverMedal Kiyoshige Kojima (31 out of 31 patents)

bronzeMedal Kumi Okuyama (29 out of 30 patents)

4.  Yasuo Tsunogae (28 out of 36 patents)

5.  Shigetaka Hayano (27 out of 27 patents)

6.  Kouichirou Maeda (26 out of 26 patents)

7.  Yasuhiro Wakizaka (25 out of 31 patents)

8.  Junji Kodemura (25 out of 31 patents)

9.  Shunsuke Yamanaka (24 out of 24 patents)

10.  Mitsugu Uejima (23 out of 24 patents)

11.  Yuki Hayashi (21 out of 92 patents)

12.  Tetsuya Toyoshima (21 out of 24 patents)

13.  Kenya Sonobe (20 out of 33 patents)

14.  Norikazu Yamamoto (20 out of 20 patents)

15.  Hiroyasu Inoue (20 out of 145 patents)


Core Competencies:
Electrochemical Device
Secondary Battery
Conductive Material
Slurry Composition
Hollow Particles
Thermoelectric Conversion
Carbon Nanotube
Binder Composition
Functional Layer
Vinyl Chloride Resin
Photoelectric Conversion
Microfluidics

1,290 patents:

1. 12742070 - Resin composition comprising thermoplastic plastomer and hollow resin particles and molded product thereof (2026-09-22),
2. 12741403 - Method for producing dip-molded article (2026-09-22),
3. 12738613 - Short-circuit device for electrochemical device and short-circuit device-equipped electrochemical device (2026-09-15),
4. 12738535 - Binder composition for all-solid-state secondary battery, slurry composition for all-solid-state secondary battery electrode mixed material layer, slurry composition for all-solid-state secondary battery solid electrolyte layer, electrode for all-solid-state secondary battery, solid electrolyte layer for all-solid-state secondary battery, and all-solid-state secondary battery (2026-09-15),
5. 12738501 - Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode, electrode for non-aqueous secondary battery, and non-aqueous secondary battery (2026-09-15),
6. 12738475 - Device for producing rolled grain layer and method of producing rolled grain layer using same (2026-09-15),
7. 12738474 - Apparatus for manufacturing electrode active material layer (2026-09-15),
8. 12735693 - METHOD FOR PRODUCING CHAIN UNSATURATED CARBOXYLIC ACID COMPOUND USING PHENYLALANINE AMMONIA LAYSE (2026-09-15),
9. 12735606 - Composition for self-suction adhering foam sheet and self-suction adhering foam laminate sheet (2026-09-15),
10. 12734733 - Method for producing modified conjugated diene polymer latex (2026-09-15),
11. 12731865 - Composition for non-aqueous secondary battery adhesive layer, adhesive layer for non-aqueous secondary battery and method for producing the same, laminate for non-aqueous secondary battery and method for producing the same, and non-aqueous secondary battery (2026-09-08),
12. 12722977 - Carbon film (2026-09-01),
13. 12719078 - Slurry composition for all-solid-state secondary battery, solid electrolyte-containing layer, and all-solid-state secondary battery (2026-08-25),
14. 12702798 - Steerable catheter (2026-08-11),
15. 12671090 - Binder composition for all-solid-state secondary battery, slurry composition for all-solid-state secondary battery, solid electrolyte-containing layer, and all-solid-state secondary battery (2026-06-30),
Zeon Corporation, headquartered in Tokyo, specializes in the development and manufacturing of advanced electrochemical devices. The company focuses on a range of core technologies, including secondary batteries, conductive materials, and innovative slurry compositions. Zeon is also engaged in the research of hollow particles and thermoelectric conversion, alongside the application of carbon nanotubes and binder compositions. Its commitment to innovation positions it as a key player in the electrochemical sector, contributing to advancements in energy storage and conversion technologies.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Zeon Corporation
1,290 Patents

#92 in Tokyo

#176 in Japan

#779 in the World

Tokyo, JP
Tokyo, Japan

Zeon Corporation

Forward Citations = 2,177

758 inventors:

goldMedal Kei Sakamoto (43 out of 68 patents)

silverMedal Kiyoshige Kojima (31 out of 31 patents)

bronzeMedal Kumi Okuyama (29 out of 30 patents)

4.  Yasuo Tsunogae (28 out of 36 patents)

5.  Shigetaka Hayano (27 out of 27 patents)

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