Growing community of inventors

Taichung Hsien, Taiwan

Sam Chang

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 = 84

Sam ChangSam Chang (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Life+gear, Inc. (2 from 54 patents)


2 patents:

1. 6001046 - Collapsible recumbent exercise bicycle apparatus

2. D407767 - Upright exercise bicycle frame

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as of
1/3/2026
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