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For the Inventor, By the Inventor

Kawasaki, Japan

Kuroda Seiko Co., Ltd.

Calculating rank
USPTO Granted Patents = 16


Forward Citations = 232

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28 inventors (with patents filed for the assignee):

goldMedal Shigeo Tamaki (4 out of 6 patents)

silverMedal Motonori Kobara (3 out of 3 patents)

bronzeMedal Toru Yagami (2 out of 3 patents)

4.  Toshihide Kamei (2 out of 4 patents)

5.  Yoshitane Saito (2 out of 9 patents)

6.  Yasuhiro Hisatomi (2 out of 2 patents)

7.  Hiroshi Yonetani (2 out of 2 patents)

8.  Kiyoyuki Fukushima (2 out of 2 patents)

9.  Yoshimasa Sakamoto (2 out of 2 patents)

10.  Yoshinori Yamaguchi (2 out of 2 patents)

11.  Kazuhiro Hozumi (2 out of 2 patents)

12.  Shigeru Suzuki (2 out of 5 patents)

13.  Koji Nakanishi (1 out of 24 patents)

14.  Nobuyuki Kimura (1 out of 3 patents)

15.  Takahiro Kobi (1 out of 2 patents)


16 patents:

1. 6592051 - Mist feeder (2003-07-15),
2. 6164620 - Apparatus for adjusting operating speed of fluid-driven equipment (2000-12-26),
3. 6062779 - Tool attaching/detaching device (2000-05-16),
4. 5800066 - Mechanical assembly of shaft and static pressure bearing (1998-09-01),
5. 5423643 - Tool clamping/unclamping device (1995-06-13),
6. 5344260 - Main spindle apparatus of machine tool (1994-09-06),
7. D338516 - Electromagnetic valve (1993-08-17),
8. D338258 - Electromagnetic valve (1993-08-10),
9. D335172 - Electromagnetic valve (1993-04-27),
10. 5171962 - Method of manufacturing laminated core (1992-12-15),
11. 4889164 - Solenoid controlled valve (1989-12-26),
12. 4854346 - Control apparatus for manifold type electromagnetic valve device (1989-08-08),
13. 4810138 - Tap holder (1989-03-07),
14. 4534381 - Electromagnetic valve (1985-08-13),
15. 4133545 - Holder for an elongate tool shank (1979-01-09),
Company Overview
Kuroda Seiko Co., Ltd. is a prominent Japanese company based in Kawasaki, specializing in precision machinery and components. The organization focuses on the development and manufacturing of high-quality tools and equipment, particularly in the fields of machining and automation. Kuroda Seiko is recognized for its innovative solutions that enhance productivity and efficiency across various industries, including automotive and aerospace. The company's commitment to research and development positions it as a key player in advancing precision engineering technologies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 10 2026

16 Patents

#44 in Kawasaki

#3,349 in Japan

#37,952 in the World

Kawasaki, JP
Kawasaki, Japan

Kuroda Seiko Co., Ltd.

Forward Citations = 232

28 inventors:

goldMedal Shigeo Tamaki (4 out of 6 patents)

silverMedal Motonori Kobara (3 out of 3 patents)

bronzeMedal Toru Yagami (2 out of 3 patents)

4.  Toshihide Kamei (2 out of 4 patents)

5.  Yoshitane Saito (2 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kuroda Seiko Co., Ltd.. Retrieved from https://idiyas.com/company/kuroda-seiko-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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