Tokyo, Japan

Ichikawa Co., Ltd.


USPTO Granted Patents = 97

% Expired Patents = 34.0



Trademarks = 1

Forward Citations = 269

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61 inventors (with patents filed for the assignee):

goldMedal Kenji Inoue (23 out of 93 patents)

silverMedal Yuya Takamori (14 out of 14 patents)

bronzeMedal Yasuyuki Ogiwara (12 out of 12 patents)

4.  Atsushi Ishino (11 out of 11 patents)

5.  Kazumasa Watanabe (11 out of 35 patents)

6.  Ai Tamura (10 out of 10 patents)

7.  Shintaro Yamazaki (8 out of 8 patents)

8.  Takao Yazaki (8 out of 8 patents)

9.  Nobuharu Suzuki (7 out of 16 patents)

10.  Ryo Umehara (7 out of 7 patents)

11.  Takashi Ouchi (6 out of 8 patents)

12.  Hiroyuki Oda (6 out of 31 patents)

13.  Takeshi Sawada (5 out of 18 patents)

14.  Mitsuyoshi Matsuno (5 out of 5 patents)

15.  Hirofumi Ishii (5 out of 5 patents)


Core Competencies:
Wet Paper Web Transfer Belt
Shoe Press Belt
Papermaking Felt
Press Felt
Papermaking Process
Base Fabric
Doctor Blade
Elastic Belt
Belt for Calendering
Carrier Belt
Shoe Press Apparatus
Papermaking Machine

97 patents:

Company Overview
Ichikawa Co., Ltd., based in Tokyo, specializes in advanced papermaking technology, focusing on the development and manufacturing of essential components for the papermaking process. The company is recognized for its innovative solutions, including wet paper web transfer belts, shoe press belts, and various types of felts that enhance efficiency and quality in paper production. Ichikawa's expertise extends to base fabrics and doctor blades, positioning it as a key player in the global papermaking industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Ichikawa Co., Ltd. USPTO Patent Assignee Logo
97 Patents

#555 in Tokyo

#1,147 in Japan

#7,981 in the World

Tokyo, JP
Tokyo, Japan
Forward Citations = 269

61 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ichikawa Co., Ltd.. Retrieved from https://idiyas.com/company/ichikawa-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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