Growing community of inventors

San Jose, CA, United States of America

Douglas A Welch

Average Co-Inventor Count = 3.00

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 = 15

Douglas A Welch ↔ Duncan J MacMillan, Jr (1 patent)Douglas A Welch ↔ Paul M Barnett (1 patent)Douglas A WelchDouglas A Welch (1 patent)Duncan J MacMillan, JrDuncan J MacMillan, Jr (3 patents)Paul M BarnettPaul M Barnett (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Octel Communications Corporation (1 from 27 patents)


1 patent:

1. 4873718 - Feature telephone integration device

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12/15/2025
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