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Zeon Corporation

USPTO Granted Patents = 1,237

CIPO Patents = 28

EPO Patents = 652

Trademarks = 20

Forward Citations = 2,099

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1,046 inventors (with patents filed for the assignee):

Kei Sakamoto (43 out of 68 patents)

Kiyoshige Kojima (31 out of 31 patents)

Kumi Okuyama (29 out of 30 patents)

4. Yasuo Tsunogae (28 out of 36 patents)

5. Shigetaka Hayano (26 out of 26 patents)

6. Yasuhiro Wakizaka (25 out of 31 patents)

7. Kouichirou Maeda (25 out of 25 patents)

8. Shunsuke Yamanaka (24 out of 24 patents)

9. Mitsugu Uejima (22 out of 23 patents)

10. Yuki Hayashi (21 out of 90 patents)

11. Junji Kodemura (21 out of 27 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:

Hollow Particles

Electrochemical Device

Photoelectric Conversion Module

Secondary Battery

Vinyl Chloride Resin Composition

Carbon Nanotube Assembly

Thermoelectric Conversion Module

Hydrogenated Block Copolymer

Self-Adhesive Foamed Sheet

Acrylic Rubber Composition

Indwelling Clip

Conductive Material Dispersion Liquid

1,237 patents: Sort by Forward Citations

1. 12486384 - Latex composition and dip-molded body (2025-12-02),

2. 12485399 - Hollow particles, resin composition and molded body (2025-12-02),

3. 12484910 - Endoscopic treatment tool (2025-12-02),

4. 12484367 - Photoelectric conversion module and method for manufacturing the same (2025-11-25),

5. 12479981 - Binder composition for electrochemical device, conductive material dispersion liquid for electrochemical device, slurry for electrochemical device electrode, electrode for electrochemical device, and electrochemical device (2025-11-25),

6. 12469852 - Paste for secondary battery, slurry for secondary battery positive electrode, positive electrode for secondary battery, secondary battery, and method of producing paste for secondary battery (2025-11-11),

7. 12466943 - Vinyl chloride resin composition, vinyl chloride resin molded product, and laminate (2025-11-11),

8. 12466907 - Acrylic rubber composition and rubber crosslinked product (2025-11-11),

9. 12466881 - Pre-filled syringe and method of producing pre-filled syringe (2025-11-11),

10. 12465901 - Method for producing hollow particles (2025-11-11),

11. 12457724 - Electromagnetic wave absorbing sheet (2025-10-28),

12. 12454593 - Composition for self-adhesive foamed sheet and self-adhesive foamed laminate sheet (2025-10-28),

13. 12444971 - Power supply device capable of maintaining, over a long period, the function of increasing the voltage of a power generation element using a secondary battery (2025-10-14),

14. 12444745 - Shaping material for electrode, electrode and methods of producing and recycling same, and electrochemical device (2025-10-14),

15. 12441916 - Self-adhesive foamed laminate sheet (2025-10-14),

ZEON CORPORATION is a global chemical company specializing in the development, production, and distribution of a wide range of innovative materials. With a commitment to sustainability and customer satisfaction, Zeon offers products in various industries, including rubber, plastics, specialty chemicals, and more. Visit their website to learn more about their advanced materials and solutions for a multitude of applications.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

1,237 Patents

#86 in Tokyo

#179 in Japan

#786 in the World

Zeon Corporation

Forward Citations = 2,099

1,046 inventors:

Kei Sakamoto (43 out of 68 patents)

Kiyoshige Kojima (31 out of 31 patents)

Kumi Okuyama (29 out of 30 patents)

4. Yasuo Tsunogae (28 out of 36 patents)

5. Shigetaka Hayano (26 out of 26 patents)

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