Forward Citations = 24

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6 inventors (with patents filed for the assignee):

Minoru Yamada (2 out of 3 patents)

Shuichi Nakagawa (1 out of 18 patents)

Noritaka Yoshikawa (1 out of 1 patent)

4. Wataru Uno (1 out of 1 patent)

5. Kazuo Kobayashi (1 out of 1 patent)

6. Seiichi Yoshikawa (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 5205030 - Rivet head caulking machine (1993-04-27),

2. 5196773 - Controller for rivetting machine (1993-03-23),

3. 5119659 - Device for changing stroke of caulking machine (1992-06-09),

4. 5105719 - Stroke control device with torque responsive motive fluid control (1992-04-21),

Company Overview

Yoshikawa Iron Works Ltd. is a Japanese company specializing in the design and manufacture of industrial machinery and equipment. With a history dating back to 1919, the company has a wealth of experience and expertise in providing high-quality products for various industries. From material handling equipment to environmental systems, Yoshikawa Iron Works Ltd. is committed to delivering innovative solutions to meet the needs of its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#3 in Shijonawate

#7,588 in Japan

Shijonawate, Japan

Yoshikawa Iron Works Ltd.

Forward Citations = 24

6 inventors:

Minoru Yamada (2 out of 3 patents)

Shuichi Nakagawa (1 out of 18 patents)

Noritaka Yoshikawa (1 out of 1 patent)

4. Wataru Uno (1 out of 1 patent)

5. Kazuo Kobayashi (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yoshikawa Iron Works Ltd.. Retrieved from https://idiyas.com/company/yoshikawa-iron-works

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]