Trademarks = 1

Forward Citations = 106

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3 inventors (with patents filed for the assignee):

Douglas J Herst (3 out of 95 patents)

Henry H Iwahashi (2 out of 3 patents)

Peter Y Ngai (1 out of 14 patents)

3 patents: Sort by Forward Citations

1. D274657 - Luminaire for indirect lighting (1984-07-10),

2. 4420798 - Adjustable overhead lighting system (1983-12-13),

3. 4390930 - Indirect lighting fixture with improved light control (1983-06-28),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#133 in Berkeley, CA

#16,867 in California

#73,904 in US

Berkeley, CA, United States of America

Herst Lighting Co.

Forward Citations = 106

3 inventors:

Douglas J Herst (3 out of 95 patents)

Henry H Iwahashi (2 out of 3 patents)

Peter Y Ngai (1 out of 14 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Herst Lighting Co.. Retrieved from https://idiyas.com/company/herst-lighting-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]