Growing community of inventors

Sarver, PA, United States of America

Steven David Singleton

Average Co-Inventor Count = 4.80

ph-index = 3

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

Steven David SingletonW Thomas Urmson, Jr (4 patents)Steven David SingletonChristopher Alan Lucke (4 patents)Steven David SingletonJohn W Mospan (3 patents)Steven David SingletonMatthew Redfield (3 patents)Steven David SingletonRonald K Junk (3 patents)Steven David SingletonWilliam Thomas Urmson, Jr (2 patents)Steven David SingletonGlen Appleby (2 patents)Steven David SingletonCharles A Petrie (2 patents)Steven David SingletonKevin David Oldknow (2 patents)Steven David SingletonDonald Thomas Eadie (2 patents)Steven David SingletonHarold DeVillo Harrison (2 patents)Steven David SingletonWilliam T Urmson (2 patents)Steven David SingletonJacob Matthew Welch (2 patents)Steven David SingletonWalter Eric Spicker (2 patents)Steven David SingletonMichael Irwin Handler (2 patents)Steven David SingletonPetar Nedkov Gueorguiev (2 patents)Steven David SingletonJames Gavin Campbell (2 patents)Steven David SingletonDonald A Bielski (2 patents)Steven David SingletonWard Powell (1 patent)Steven David SingletonCharles Henry Schnorr, Iii (1 patent)Steven David SingletonThomas W Urmson (1 patent)Steven David SingletonW Thomas Urmson (1 patent)Steven David SingletonMatthew P Redfield (1 patent)Steven David SingletonCharles H Schnorr (1 patent)Steven David SingletonWard T Powell (1 patent)Steven David SingletonMatthew P Redfield (0 patent)Steven David SingletonSteven David Singleton (10 patents)W Thomas Urmson, JrW Thomas Urmson, Jr (23 patents)Christopher Alan LuckeChristopher Alan Lucke (4 patents)John W MospanJohn W Mospan (29 patents)Matthew RedfieldMatthew Redfield (8 patents)Ronald K JunkRonald K Junk (5 patents)William Thomas Urmson, JrWilliam Thomas Urmson, Jr (14 patents)Glen ApplebyGlen Appleby (7 patents)Charles A PetrieCharles A Petrie (5 patents)Kevin David OldknowKevin David Oldknow (5 patents)Donald Thomas EadieDonald Thomas Eadie (5 patents)Harold DeVillo HarrisonHarold DeVillo Harrison (4 patents)William T UrmsonWilliam T Urmson (3 patents)Jacob Matthew WelchJacob Matthew Welch (2 patents)Walter Eric SpickerWalter Eric Spicker (2 patents)Michael Irwin HandlerMichael Irwin Handler (2 patents)Petar Nedkov GueorguievPetar Nedkov Gueorguiev (2 patents)James Gavin CampbellJames Gavin Campbell (2 patents)Donald A BielskiDonald A Bielski (2 patents)Ward PowellWard Powell (5 patents)Charles Henry Schnorr, IiiCharles Henry Schnorr, Iii (2 patents)Thomas W UrmsonThomas W Urmson (1 patent)W Thomas UrmsonW Thomas Urmson (6 patents)Matthew P RedfieldMatthew P Redfield (2 patents)Charles H SchnorrCharles H Schnorr (1 patent)Ward T PowellWard T Powell (1 patent)Matthew P RedfieldMatthew P Redfield (0 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. L.b. Foster Rail Technologies, Corp. (7 from 18 patents)

2. Koppers Delaware, Inc. (3 from 17 patents)

3. Harrison, Harold Devillo (0 patent)


10 patents:

1. 12037750 - Gauge plate insulator

2. 10961665 - Rail joint assembly having forged rail joint bars

3. D885977 - Anti-rail rollover device

4. 10358153 - Top of rail foam bar

5. 10220860 - Wayside friction management system

6. 9440665 - Top of rail foam bar

7. 9352761 - Wayside friction management system

8. 9022173 - Grease guide

9. 8955645 - Top of rail foam bar

10. 8783416 - Wiping bar quick clamp

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as of
1/2/2026
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