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Cotati, CA, United States of America

Eightstar Diamond Company, Inc.

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USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 17

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1 inventor (with patents filed for the assignee):

Al Gilbertson (2 out of 7 patents)

2 patents: Sort by Forward Citations

1. 6795171 - Device for judging symmetry, brightness, and efficiency of light return in precious stones (2004-09-21),

2. 6665058 - Device for judging symmetry, brightness, and efficiency of light return in precious stones (2003-12-16),

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USPTO Data Jan 1 1976 - Nov 3 2026

2 Patents

#9 in Cotati, CA

#21,043 in California

#95,021 in US

Cotati, CA, United States of America

Eightstar Diamond Company, Inc.

Forward Citations = 17

1 inventor:

Al Gilbertson (2 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Eightstar Diamond Company, Inc.. Retrieved from https://idiyas.com/company/eightstar-diamond-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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