Growing community of inventors

Munroe Falls, OH, United States of America

Robert J Willoughby

Average Co-Inventor Count = 2.40

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 = 17

Robert J WilloughbyJoseph R Zeno (2 patents)Robert J WilloughbyChristophor Napier (1 patent)Robert J WilloughbyRobert J Willoughby (2 patents)Joseph R ZenoJoseph R Zeno (4 patents)Christophor NapierChristophor Napier (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Acs Industries, Inc. (2 from 44 patents)


2 patents:

1. 8839534 - Monolithic floor for hot slag bucket

2. 7818901 - Progressive linkage for excavator thumb

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as of
1/9/2026
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