Growing community of inventors

Warren, OH, United States of America

Charles A Petrie

Average Co-Inventor Count = 4.17

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 = 15

Charles A PetrieMatthew Redfield (3 patents)Charles A PetrieSteven David Singleton (2 patents)Charles A PetrieGlen Appleby (2 patents)Charles A PetrieWard Powell (2 patents)Charles A PetrieCharles Schnorr (2 patents)Charles A PetrieW Thomas Urmson, Jr (1 patent)Charles A PetrieChristopher Alan Lucke (1 patent)Charles A PetrieCharles Henry Schnorr, Iii (1 patent)Charles A PetrieThomas W Urmson (1 patent)Charles A PetrieCharles H Schnorr, Iii (1 patent)Charles A PetrieCharles H,iii Schnorr (1 patent)Charles A PetrieMatthew P Redfield (1 patent)Charles A PetrieCharles H Schnorr (1 patent)Charles A PetrieWard T Powell (1 patent)Charles A PetrieSteven D Singleton (1 patent)Charles A PetrieJr Urmson W Thomas (1 patent)Charles A PetrieCharles A Petrie (5 patents)Matthew RedfieldMatthew Redfield (8 patents)Steven David SingletonSteven David Singleton (10 patents)Glen ApplebyGlen Appleby (7 patents)Ward PowellWard Powell (5 patents)Charles SchnorrCharles Schnorr (3 patents)W Thomas Urmson, JrW Thomas Urmson, Jr (23 patents)Christopher Alan LuckeChristopher Alan Lucke (4 patents)Charles Henry Schnorr, IiiCharles Henry Schnorr, Iii (2 patents)Thomas W UrmsonThomas W Urmson (1 patent)Charles H Schnorr, IiiCharles H Schnorr, Iii (1 patent)Charles H,iii SchnorrCharles H,iii Schnorr (1 patent)Matthew P RedfieldMatthew P Redfield (2 patents)Charles H SchnorrCharles H Schnorr (1 patent)Ward T PowellWard T Powell (1 patent)Steven D SingletonSteven D Singleton (1 patent)Jr Urmson W ThomasJr Urmson W Thomas (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. L.b. Foster Rail Technologies, Corp. (5 from 18 patents)


5 patents:

1. 11273853 - Top of rail resilient bar

2. 9914465 - Top of rail resilient bar

3. 9096242 - Gauge face lubrication

4. 9022173 - Grease guide

5. 8783416 - Wiping bar quick clamp

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as of
12/13/2025
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