Growing community of inventors

El Cajon, CA, United States of America

Douglas Frank Shepherd

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 = 105

Douglas Frank ShepherdThomas John Roberts (1 patent)Douglas Frank ShepherdDouglas Frank Shepherd (1 patent)Thomas John RobertsThomas John Roberts (18 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mad Catz, Inc. (1 from 11 patents)


1 patent:

1. 6203432 - System for adjusting the response characteristic of an electronic game input device

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/8/2026
Loading…