Growing community of inventors

Andover, MA, United States of America

John O Hansen

Average Co-Inventor Count = 5.00

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 = 39

John O Hansen ↔ Crispian G Tompkin (1 patent)John O Hansen ↔ Kit R Morris (1 patent)John O Hansen ↔ Anthony Martin Duys (1 patent)John O Hansen ↔ Brad Philip Collins (1 patent)John O HansenJohn O Hansen (1 patent)Crispian G TompkinCrispian G Tompkin (81 patents)Kit R MorrisKit R Morris (54 patents)Anthony Martin DuysAnthony Martin Duys (31 patents)Brad Philip CollinsBrad Philip Collins (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Polycom, Inc. (1 from 455 patents)


1 patent:

1. D571776 - Speakerphone

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as of
12/7/2025
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