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Greenville, IN, United States of America

Robert Eugene Marcum

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 = 5

Robert Eugene Marcum ↔ William H Stevens (1 patent)Robert Eugene Marcum ↔ Keith Richard Koenig (1 patent)Robert Eugene MarcumRobert Eugene Marcum (1 patent)William H StevensWilliam H Stevens (12 patents)Keith Richard KoenigKeith Richard Koenig (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Philip Morris Management Corp. (1 from 4 patents)


1 patent:

1. 6168110 - Dual bobbin mandrel

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as of
12/29/2025
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