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For the Inventor, By the Inventor

Osaka, Japan

Sunlux Co., Ltd.

Calculating rank
USPTO Granted Patents = 3

% Expired Patents = 66.7

Forward Citations = 7

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3 inventors (with patents filed for the assignee):

goldMedal Sumio Kato (2 out of 2 patents)

silverMedal Masato Kitahara (1 out of 1 patent)

bronzeMedal Yoshitomo Tanaka (1 out of 3 patents)


3 patents:

1. 10189212 - Porous stamp material for laser processing, porous stamp using the same, and method of manufacturing the same (2019-01-29),
2. 8147946 - Polarizing plastic optical device and process for producing the same (2012-04-03),
3. 7811481 - Polarizing plastic optical device and process for producing the same (2010-10-12),
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USPTO Data Jan 1 1976 - Nov 3 2026

3 Patents

#951 in Osaka

#8,944 in Japan

Osaka, JP
Osaka, Japan

Sunlux Co., Ltd.

Forward Citations = 7

3 inventors:

goldMedal Sumio Kato (2 out of 2 patents)

silverMedal Masato Kitahara (1 out of 1 patent)

bronzeMedal Yoshitomo Tanaka (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sunlux Co., Ltd.. Retrieved from https://idiyas.com/company/sunlux-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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