Nakanishi Engineering Co., Ltd.

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USPTO Granted Patents = 3

Forward Citations = 53

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3 inventors (with patents filed for the assignee):

Yoshikazu Nakanishi (3 out of 11 patents)

Kenkichi Matsubara (2 out of 2 patents)

Tamotsu Nakazawa (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 6434887 - Window stay and window construction equipped with window stay (2002-08-20),

2. 5383303 - Window (1995-01-24),

3. 5050345 - Window (1991-09-24),

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USPTO Data Jan 1 1976 - Oct 27 2026

3 Patents

#376 in

#8,934 in Japan

JP

Nakanishi Engineering Co., Ltd.

Forward Citations = 53

3 inventors:

Yoshikazu Nakanishi (3 out of 11 patents)

Kenkichi Matsubara (2 out of 2 patents)

Tamotsu Nakazawa (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nakanishi Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/nakanishi-engineering-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]