Growing community of inventors

Orange, CA, United States of America

Donald E Sprothbery

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 = 66

Donald E SprothberyArno G Ledebuhr (1 patent)Donald E SprothberyDonald E Sprothbery (1 patent)Arno G LedebuhrArno G Ledebuhr (14 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hughes Aircraft Company (1 from 4,197 patents)


1 patent:

1. 4836649 - Optical layout for a three light valve full-color projector employing a

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