Growing community of inventors

Richmond, VA, United States of America

William H Pettigrew

Average Co-Inventor Count = 7.00

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 = 10

William H PettigrewMartin T Garthaffner (2 patents)William H PettigrewCharles Gary Atwell (2 patents)William H PettigrewAndrew J Gillespie (2 patents)William H PettigrewRonald D Honaker (2 patents)William H PettigrewWilliam H Smick, Iii (2 patents)William H PettigrewRicky N Cooper (2 patents)William H PettigrewWilliam H Pettigrew (2 patents)Martin T GarthaffnerMartin T Garthaffner (70 patents)Charles Gary AtwellCharles Gary Atwell (16 patents)Andrew J GillespieAndrew J Gillespie (7 patents)Ronald D HonakerRonald D Honaker (6 patents)William H Smick, IiiWilliam H Smick, Iii (5 patents)Ricky N CooperRicky N Cooper (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Philip Morris Inc. (2 from 759 patents)


2 patents:

1. 6368041 - Drum elevator system

2. 6123201 - Drum elevator system

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as of
1/3/2026
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