Growing community of inventors

Oakland, CA, United States of America

Robert W Johnson

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 = 16

Robert W Johnson ↔ Kazuaki Hashimoto (1 patent)Robert W Johnson ↔ Hiroaki Yanagita (1 patent)Robert W JohnsonRobert W Johnson (1 patent)Kazuaki HashimotoKazuaki Hashimoto (34 patents)Hiroaki YanagitaHiroaki Yanagita (12 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hoya Corporation (1 from 2,529 patents)


1 patent:

1. 6465105 - WDM optical filter and glass substrate for use in the WDM optical filter

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12/17/2025
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