Growing community of inventors

Fairport, NY, United States of America

Stephen D Marra

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 = 3

Stephen D MarraJoseph A Watkins (1 patent)Stephen D MarraDuane B Kirk (1 patent)Stephen D MarraStephen D Marra (1 patent)Joseph A WatkinsJoseph A Watkins (35 patents)Duane B KirkDuane B Kirk (11 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Eastman-Kodak Company (1 from 21,597 patents)


1 patent:

1. 5815739 - Camera assembly with quill drivekey for engaging film cartridge

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as of
1/18/2026
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