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For the Inventor, By the Inventor

Hiroshima, Japan

Nishikawa Rubber Co., Ltd.


USPTO Granted Patents = 232



Trademarks = 5

Forward Citations = 787

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238 inventors (with patents filed for the assignee):

goldMedal Toshifumi Matsuura (19 out of 19 patents)

silverMedal Michihiko Matsumoto (13 out of 13 patents)

bronzeMedal Atsuo Masumoto (11 out of 11 patents)

4.  Hirofumi Ogawa (9 out of 10 patents)

5.  Shinichiro Emori (9 out of 9 patents)

6.  Kousuke Mori (8 out of 8 patents)

7.  Yoshihiro Kohara (8 out of 8 patents)

8.  Tomonori Miyata (7 out of 7 patents)

9.  Yuzo Hirakawa (7 out of 7 patents)

10.  Yasuhiro Morihara (6 out of 6 patents)

11.  Wataru Hattori (6 out of 9 patents)

12.  Kazuyuki Takeda (6 out of 10 patents)

13.  Akio Okayama (6 out of 6 patents)

14.  Hiromu Oda (6 out of 7 patents)

15.  Taisuke Kameoka (6 out of 6 patents)


Core Competencies:
Automotive Door Sealing
Weather Strip Manufacturing
Sealing Structure
Glass Run Design
Sensor Integration
Soundproof Materials
Vehicle Door Sealing
Touch Sensor Coupling
Sliding Door Sealing
Cargo Bed Sealing
Automobile Weather Strip
Door Hole Seal

232 patents:

1. 12508888 - Sealing structure for door of automobile (2025-12-30),
2. 12472805 - Glass run for automotive door (2025-11-18),
3. 12291087 - Sealing structure for door of automobile (2025-05-06),
4. 12291086 - Weather strip and method of manufacturing the same (2025-05-06),
5. 12280724 - Routing structure of wire harness of sensor for door of automobile (2025-04-21),
6. 12276149 - Protector with sensor and method of manufacturing the same (2025-04-14),
7. 12269324 - Automobile weather strip (2025-04-08),
8. 12263722 - Glass run and method of manufacturing the same (2025-04-01),
9. 12179564 - Sealing cover and sealing member (2024-12-31),
10. 12138996 - Sealing member for a door hole cap (2024-11-12),
11. 12138994 - Sealing structure for truck cargo bed with shutter (2024-11-12),
12. 12115705 - Method of manufacturing soundproof material (2024-10-15),
13. 12110723 - Protector with sensor (2024-10-08),
14. 12054038 - Door hole cap and sealing member (2024-08-06),
15. 11987104 - Vehicle door sealing member (2024-05-21),
Nishikawa Rubber Co., Ltd. is a leading Japanese company specializing in the manufacturing of rubber products. With a history dating back to 1934, Nishikawa Rubber has grown into a renowned global manufacturer, providing high-quality rubber components for various industries, including automotive, construction, and household appliances. The company is committed to delivering innovative and sustainable solutions to meet the diverse needs of its customers. For more information, please visit their official website.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

232 Patents

#5 in Hiroshima, 729-3431

#611 in Japan

#3,587 in the World

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Hiroshima, Japan

Nishikawa Rubber Co., Ltd.

Forward Citations = 787

238 inventors:

goldMedal Toshifumi Matsuura (19 out of 19 patents)

silverMedal Michihiko Matsumoto (13 out of 13 patents)

bronzeMedal Atsuo Masumoto (11 out of 11 patents)

4.  Hirofumi Ogawa (9 out of 10 patents)

5.  Shinichiro Emori (9 out of 9 patents)

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