Growing community of inventors

Andover, MA, United States of America

John F Chang

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 17

John F ChangJohn Albert Geen (1 patent)John F ChangJohn F Chang (1 patent)John Albert GeenJohn Albert Geen (55 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Analog Devices,inc. (1 from 3,624 patents)


1 patent:

1. 9212908 - MEMS gyroscopes with reduced errors

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12/28/2025
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