Growing community of inventors

China Grove, NC, United States of America

Gregory W Hallman

Average Co-Inventor Count = 6.00

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 = 22

Gregory W Hallman ↔ Darrill L Plummer (2 patents)Gregory W Hallman ↔ Christopher F Yonge (2 patents)Gregory W Hallman ↔ Anthony W Joy (2 patents)Gregory W Hallman ↔ Mike Allen (2 patents)Gregory W Hallman ↔ Robert R Gibson (2 patents)Gregory W HallmanGregory W Hallman (2 patents)Darrill L PlummerDarrill L Plummer (5 patents)Christopher F YongeChristopher F Yonge (4 patents)Anthony W JoyAnthony W Joy (3 patents)Mike AllenMike Allen (2 patents)Robert R GibsonRobert R Gibson (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ingersoll-rand Company (2 from 1,201 patents)


2 patents:

1. D395899 - Reciprocating compressor

2. D392649 - Reciprocating compressor

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as of
1/2/2026
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