Growing community of inventors

Lombard, IL, United States of America

Richard W Roberts, Deceased

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 = 15

Richard W Roberts, Deceased ↔ Richard L Smirl (1 patent)Richard W Roberts, Deceased ↔ Herbert N Underwood (1 patent)Richard W Roberts, DeceasedRichard W Roberts, Deceased (1 patent)Richard L SmirlRichard L Smirl (14 patents)Herbert N UnderwoodHerbert N Underwood (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Borg-warner Automotive Gmbh (1 from 338 patents)


1 patent:

1. 4990127 - Dual range infinitely variable transmission

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as of
12/19/2025
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