Growing community of inventors

Garland, TX, United States of America

Tzu S Shzu

Average Co-Inventor Count = 2.57

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 = 28

Tzu S ShzuRobert L Arnold (3 patents)Tzu S ShzuPei Yang Lee (2 patents)Tzu S ShzuTzu S Shzu (3 patents)Robert L ArnoldRobert L Arnold (34 patents)Pei Yang LeePei Yang Lee (6 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Easco Hand Tools, Inc. (3 from 74 patents)


3 patents:

1. 7059219 - Reversible ratcheting tool with improved control member

2. 6988429 - Reversible ratcheting tool with improved control member

3. 6971287 - Reversible ratcheting tool with improved control member

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as of
12/15/2025
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