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 9 2025

106 Utility and 13 Design Patents

#1 in North Hollywood, CA

#1,532 in California

#4,632 in US

#8,203 in the World

rank by utility patents
...
North Hollywood, CA, United States of America

Leonard T Chapman

Forward Citations = 1,195

Company Filing History:

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