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For the Inventor, By the Inventor

Osaka, Japan

Masao Kasahara

USPTO Granted Patents = 1

Forward Citations = 36

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3 inventors (with patents filed for the assignee):

goldMedal Kiyoshi Ogishi (1 out of 2 patents)

silverMedal Ryuichi Sakai (1 out of 1 patent)

bronzeMedal Masao Kasahara (1 out of 10 patents)


1 patent:

1. 7239701 - Key sharing method, secret key generating method, common key generating method and cryptographic communication method in ID-NIKS cryptosystem (2007-07-03),
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USPTO Data Jan 1 1976 - Oct 20 2026

1 Patents

#1,658 in Osaka

#15,759 in Japan

Osaka, JP
Osaka, Japan

Masao Kasahara

Forward Citations = 36

3 inventors:

goldMedal Kiyoshi Ogishi (1 out of 2 patents)

silverMedal Ryuichi Sakai (1 out of 1 patent)

bronzeMedal Masao Kasahara (1 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Masao Kasahara. Retrieved from https://idiyas.com/company/masao-kasahara

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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