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USPTO Data Jan 1 1976 - Dec 30 2025
166 Patents
#81 in Osaka
#778 in Japan
#4,843 in the World
Kokuyo Co., Ltd.
Forward Citations = 2,276
129 inventors:
Kokuyo Co., Ltd.
CIPO Patents = 3
EPO Patents = 32
Trademarks = 3
Forward Citations = 2,276
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129 inventors (with patents filed for the assignee):
Yojiro Kinoshita (40 out of 41 patents)
Hideto Shima (30 out of 41 patents)
Takao Sugano (17 out of 17 patents)
4. Takashi Mitsui (11 out of 11 patents)
5. Takayoshi Kanou (11 out of 11 patents)
6. Kazuo Oku (11 out of 11 patents)
7. Fritz Frenkler (11 out of 13 patents)
8. Toshiki Yajima (10 out of 11 patents)
9. Hideshi Hamaguchi (10 out of 13 patents)
10. Ippei Iwahara (10 out of 10 patents)
11. Nobuyuki Ueda (10 out of 38 patents)
12. Kenta Asano (10 out of 10 patents)
13. Yoshimasa Kato (9 out of 15 patents)
14. Keiji Kai (9 out of 15 patents)
15. Katsuaki Hayashi (8 out of 8 patents)
Core Competencies:
Movable Seat Technology
Chair Design Innovations
Load Support Mechanisms
Return Force Mechanism
Seat Support Mechanisms
Adhesive Products
Binding Machines
Coating Film Transfer Tools
Dispenser Technology
Transfer Tools
Scissors Design
Stapler Innovations
166 patents:
KOKUYO CO., LTD. is a leading Japanese stationery and office supplies company. With a history of over 100 years, KOKUYO aims to provide innovative and functional products for businesses, schools, and individuals worldwide. Their diverse product portfolio spans from notebooks, paper, and writing instruments to office furniture and interior design solutions. KOKUYO is committed to enhancing productivity and creativity through their high-quality, sustainable, and ergonomic products.
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3 patents (CIPO):
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32 patents (EPO):
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