Growing community of inventors

Glendora, CA, United States of America

Roger W Perkins

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 = 6

Roger W Perkins ↔ Richard D Brown (1 patent)Roger W Perkins ↔ Doyle R Metz (1 patent)Roger W PerkinsRoger W Perkins (1 patent)Richard D BrownRichard D Brown (6 patents)Doyle R MetzDoyle R Metz (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Rain Bird Sprinkler Mfg. Corp. (1 from 40 patents)


1 patent:

1. 4892256 - Up-spray deflector cup for spraying the underside of plant foliage

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as of
12/20/2025
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