Growing community of inventors

Marblehead, MA, United States of America

Robert M Welch

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 = 41

Robert M WelchDaniel B Klitsner (1 patent)Robert M WelchRobert M Welch (1 patent)Daniel B KlitsnerDaniel B Klitsner (7 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hasbro, Inc. (1 from 496 patents)


1 patent:

1. 6086478 - Hand-held voice game

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as of
12/17/2025
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