IDiyas’s Digital Inventor Badge (DIB) showcases an inventor’s inventive prowess in granted patents across Utility, Design, and Plant patents. The data has been tracked since January 1, 1976, and refreshed each Tuesday. The data benchmarks an inventor’s prolificness to other inventors in their city, state, country, and the world. The badge reflects an inventor’s success in granted patents across their career.

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USPTO Data Jan 1 1976 - Sep 30 2025

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309 Utility and 1 Design Patents

#63 in San Diego, CA

#157 in California

#463 in US

#785 in the World

rank by utility patents
...
San Diego, CA, United States of America

Henry S Chang

Forward Citations = 909

Company Filing History:

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