Growing community of inventors

San Jose, CA, United States of America

Robert P Shadwick

Average Co-Inventor Count = 2.00

ph-index = 3

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 = 24

Robert P ShadwickDuncan W Frew (3 patents)Robert P ShadwickRobert P Shadwick (3 patents)Duncan W FrewDuncan W Frew (7 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Unisys Corporation (3 from 2,439 patents)


3 patents:

1. 5143787 - Method of coating a carbon coated magnetic recording medium surface with

2. 5037710 - Anti-spin-off coating for disc records

3. 4797303 - Surface lubricants for disc record

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1/14/2026
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