Growing community of inventors

Richmond, VA, United States of America

John R Madsen

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 = 2

John R Madsen ↔ Sean Anderson (1 patent)John R Madsen ↔ Winston T Sanders (1 patent)John R MadsenJohn R Madsen (1 patent)Sean AndersonSean Anderson (6 patents)Winston T SandersWinston T Sanders (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Amf Bowling, Inc. (1 from 33 patents)


1 patent:

1. 5779554 - Three-dimensional bowling alley masking unit

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