Growing community of inventors

El Cerrito, CA, United States of America

Henry H Iwahashi

Average Co-Inventor Count = 2.00

ph-index = 3

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 78

Henry H IwahashiDouglas J Herst (3 patents)Henry H IwahashiHenry H Iwahashi (3 patents)Douglas J HerstDouglas J Herst (95 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Herst Lighting Co. (2 from 3 patents)

2. Peerless Lighting Corporation (1 from 47 patents)


3 patents:

1. 4706170 - Lighting fixture hanger unit for a modular lighting system

2. D274657 - Luminaire for indirect lighting

3. 4420798 - Adjustable overhead lighting system

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1/5/2026
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