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For the Inventor, By the Inventor

Tokyo, Japan

501 Hoya Corporation


USPTO Granted Patents = 2

Forward Citations = 12

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3 inventors (with patents filed for the assignee):

goldMedal Hisao Kawai (1 out of 13 patents)

silverMedal Takeo Matsudaira (1 out of 7 patents)

bronzeMedal Yasumoto Shimizu (1 out of 5 patents)


2 patents:

1. 4683044 - Method of manufacturing an electroluminescent panel without any adverse (1987-07-28),
2. 4568791 - Solar cell comprising an undulated transparent conductive layer (1986-02-04),
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USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#4,366 in Tokyo

#11,133 in Japan

Tokyo, JP
Tokyo, Japan

501 Hoya Corporation

Forward Citations = 12

3 inventors:

goldMedal Hisao Kawai (1 out of 13 patents)

silverMedal Takeo Matsudaira (1 out of 7 patents)

bronzeMedal Yasumoto Shimizu (1 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: 501 Hoya Corporation. Retrieved from https://idiyas.com/company/501-hoya

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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