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Iwase Sangyo Co.

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USPTO Granted Patents = 2

Forward Citations = 24

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4 inventors (with patents filed for the assignee):

Yasuaki Ohtani (2 out of 3 patents)

Kohji Ohtake (2 out of 2 patents)

Kazuo Hayashi (2 out of 2 patents)

4. Isamu Kubo (2 out of 13 patents)

2 patents: Sort by Forward Citations

1. 5096524 - Method for automatically stretching a silk screen fabric on a silk (1992-03-17),

2. 4978414 - Apparatus for stretching silk including means to move cramp members (1990-12-18),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#12 in Isesaki

#11,143 in Japan

Iwase Sangyo Co.

Forward Citations = 24

4 inventors:

Yasuaki Ohtani (2 out of 3 patents)

Kohji Ohtake (2 out of 2 patents)

Kazuo Hayashi (2 out of 2 patents)

4. Isamu Kubo (2 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Iwase Sangyo Co.. Retrieved from https://idiyas.com/company/iwase-sangyo-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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