Growing community of inventors

Alhambra, CA, United States of America

Johnny O Sim

Average Co-Inventor Count = 1.00

ph-index = 2

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 = 29

Johnny O SimJohnny O Sim (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mcgean-rohco, Inc. (2 from 43 patents)


2 patents:

1. 5487789 - Paint stripper

2. 5411678 - Paint stripper

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as of
12/31/2025
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