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US

John R Chapman

Average Co-Inventor Count = 1.00

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 = 0

John R Chapman ↔ Rodney Sparks (1 patent)John R ChapmanJohn R Chapman (0 patent)Rodney SparksRodney Sparks (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Microaire Surgical Instruments, Inc. (47 patents)

2. Stem Cell Partners LLC (2 patents)


0 patent:

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12/12/2025
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