Growing community of inventors

Diamond Bar, CA, United States of America

Fong Chang

Average Co-Inventor Count = 1.82

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 = 58

Fong ChangGeorge Seelman (3 patents)Fong ChangRichard Allen Darling (3 patents)Fong ChangDavid Martinez (2 patents)Fong ChangSteven Stallard (1 patent)Fong ChangFong Chang (5 patents)George SeelmanGeorge Seelman (45 patents)Richard Allen DarlingRichard Allen Darling (18 patents)David MartinezDavid Martinez (2 patents)Steven StallardSteven Stallard (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Instant Care, Inc. (3 from 13 patents)

2. Other (1 from 832,718 patents)


5 patents:

1. 12258784 - Door strike plate sensor

2. 9520053 - Event communication apparatus and method

3. 8779919 - Event communication apparatus and method

4. 7950068 - Headwear comprising a bill which defines an enclosed space

5. D572704 - Wireless plug-in speaker assembly

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as of
12/12/2025
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