Growing community of inventors

Escondido, CA, United States of America

Donald Cerney

Average Co-Inventor Count = 2.00

ph-index = 2

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 = 8

Donald CerneyDavid H Roberts (2 patents)Donald CerneyDonald Cerney (2 patents)David H RobertsDavid H Roberts (12 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Napp Systems, Inc. (2 from 16 patents)


2 patents:

1. 7241124 - Apparatus for the rapid development of photosensitive printing elements

2. 7156630 - Apparatus for the rapid development of photosensitive printing elements

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as of
12/30/2025
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