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San Diego, CA, United States of America

John H Chin

Average Co-Inventor Count = 2.00

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 = 18

John H ChinPhilip C Imming (2 patents)John H ChinJonathan J Sieg (1 patent)John H ChinJohn H Chin (3 patents)Philip C ImmingPhilip C Imming (4 patents)Jonathan J SiegJonathan J Sieg (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Greatcall, Inc. (3 from 36 patents)


3 patents:

1. 9467833 - Emergency call return systems and methods

2. 8489066 - Systems and methods for identifying caller locations

3. 8270939 - Systems and methods for identifying caller locations

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as of
12/31/2025
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