Growing community of inventors

Saratoga, CA, United States of America

Erica Tsai

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 = 241

Erica TsaiJohn C Tsai (4 patents)Erica TsaiErica Tsai (4 patents)John C TsaiJohn C Tsai (37 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (3 from 832,912 patents)

2. Excel Precision Corporation (1 from 19 patents)


4 patents:

1. 7290709 - Information card system

2. 7025265 - Information card system

3. 6789738 - Information card system

4. 6561420 - Information card system

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as of
1/7/2026
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