% Expired Patents = 100.0

Forward Citations = 0

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3 inventors (with patents filed for the assignee):

Muneyuki Hirai (2 out of 2 patents)

Kazutaka Terashima (2 out of 25 patents)

Suzuka Nishimura (2 out of 5 patents)

2 patents: Sort by Forward Citations

1. 9755111 - Active region containing nanodots (also referred to as 'quantum dots') in mother crystal formed of zinc blende-type (also referred to as 'cubic crystal-type') AlyInxGal-y-xN Crystal (y[[□]][≧] 0, x > 0) grown on Si substrate, and light emitting device using the same (LED and LD) (2017-09-05),

2. 9595632 - Method for producing GaN-based crystal and semiconductor device (2017-03-14),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#4,366 in Tokyo

#11,133 in Japan

Tokyo, Japan

Nitto Optical Co., Ltd.

Forward Citations = 0

3 inventors:

Muneyuki Hirai (2 out of 2 patents)

Kazutaka Terashima (2 out of 25 patents)

Suzuka Nishimura (2 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nitto Optical Co., Ltd.. Retrieved from https://idiyas.com/company/nitto-optical-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]