Growing community of inventors

San Jose, CA, United States of America

James R Preston

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 = 0

James R PrestonJohn C Boutet (1 patent)James R PrestonJames R Preston (1 patent)John C BoutetJohn C Boutet (38 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Eastman-kodak Company (1 from 21,594 patents)


1 patent:

1. 6455810 - Stepped drum or stepped hold-down-rollers for heat processable media

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as of
12/12/2025
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