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Kureha Kagaku Kogyo Kabushiki Kaisha

USPTO Granted Patents = 776

CIPO Patents = 10

Trademarks = 2

Forward Citations = 9,343

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696 inventors (with patents filed for the assignee):

Chikao Yoshikumi (68 out of 68 patents)

Takayoshi Fujii (47 out of 76 patents)

Teruo Sakagami (41 out of 43 patents)

4. Naohiro Murayama (41 out of 42 patents)

5. Kenichi Matsunaga (36 out of 82 patents)

6. Zenya Shiiki (36 out of 72 patents)

7. Takayuki Katto (35 out of 64 patents)

8. Takao Ando (33 out of 48 patents)

9. Yo Iizuka (30 out of 43 patents)

10. Fumio Hirose (28 out of 28 patents)

11. Shiro Yamazaki (27 out of 35 patents)

12. Masanori Ikuzawa (27 out of 29 patents)

13. Satoru Kumazawa (25 out of 38 patents)

14. Takao Iwasaki (24 out of 25 patents)

15. Yoshio Ohmura (24 out of 24 patents)

Core Competencies:

Polymer Electrolyte

Vinylidene Fluoride Copolymer

Nonaqueous Battery

Carbonaceous Electrode Material

Heat-Shrinkable Multilayer Film

Optical Material

Biochemical Information Processing

Germicides

Plastic Lens Material

Aromatase-Inhibiting Composition

Multilayer Film

Electrode-Forming Composition

776 patents: Sort by Forward Citations

1. 6824927 - Polymer electrolyte containing a vinylidene fluoride copolymer and a nonaqueous electrolytic solution, and nonaqueous battery containing the polymer electrolyte (2004-11-30),

2. 6699549 - Heat-shrinkable multilayer film (2004-03-02),

3. 6657005 - Thermoplastic resin composition (2003-12-02),

4. 6569570 - Carbonaceous electrode material for secondary battery (2003-05-27),

5. 6565985 - Heat-shrinkable multilayer film (2003-05-20),

6. 6562992 - Optical material (2003-05-13),

7. 6528567 - Antistatic resin composition (2003-03-04),

8. 6486099 - Microcapsule and process for production thereof (2002-11-26),

9. 6436495 - Multilayer film (2002-08-20),

10. 6410613 - Phosphate compound and preparation process thereof, phosphate copper compound and preparation process thereof, near infrared ray absorber, and near infrared ray-absorbing acrylic resin composition (2002-06-25),

11. 6372388 - Vinylidene fluoride copolymer for gel-form solid electrolyte formation, solid electrolyte, and battery (2002-04-16),

12. 6339045 - N-(unsubstituted or substituted)-4-substituted-6-(unsubstituted or substituted)phenoxy-2-pyridinecarboxamides or thiocarboxamides, processes for producing the same, and herbicides (2002-01-15),

13. 6327136 - Electrode-forming composition, activated carbon electrode and electric double layer capacitor (2001-12-04),

14. 6303249 - Carbonaceous electrode material for secondary battery and process for production thereof (2001-10-16),

15. 6271385 - N-heterocyclic methylpropylamine derivatives, process for producing the same and germicides (2001-08-07),

Kureha Kagaku Kogyo Kabushiki Kaisha is a leading Japanese chemical company specializing in advanced materials for various industries. With a rich history spanning over 70 years, Kureha is known for its innovation and commitment to quality. Their diverse product portfolio includes engineering plastics, specialty films, fine chemicals, and pharmaceuticals. Kureha's dedicated research and development efforts drive the creation of cutting-edge materials that contribute to sustainable solutions in sectors like automotive, electronics, healthcare, and packaging.

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

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USPTO Data Jan 1 1976 - Jan 6 2026

776 Patents

#118 in Tokyo

#265 in Japan

#1,254 in the World

Kureha Kagaku Kogyo Kabushiki Kaisha

Forward Citations = 9,343

696 inventors:

Chikao Yoshikumi (68 out of 68 patents)

Takayoshi Fujii (47 out of 76 patents)

Teruo Sakagami (41 out of 43 patents)

4. Naohiro Murayama (41 out of 42 patents)

5. Kenichi Matsunaga (36 out of 82 patents)

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