Inventor · disambiguated record
Tony Shirk
Also filed as: SHIRK TONY · SHIRK TONY ALLEN
10 granted patents·1 pending application·50 citations·filing 1999–2025
83Inventor score
Top patents by PatentIndex Score
11 records- 0191US7707943B2Self-propelled rail unloading machineHERZOG CONTRACTING CORP·Filed 2006·Granted May 4, 2010·10 cites·16 claims
- 0290US7152347B2Method and apparatus for applying railway ballastHERZOG CONTRACTING CORP·Filed 2004·Granted Dec 26, 2006·27 cites·17 claims
- 0360US12454808B2Rotary ditching attachment for a tool manipulating armHERZOG RAILROAD SERVICES INC·Filed 2022·Granted Oct 28, 2025·0 cites·22 claims
- 0456US12435475B2Rail tie distribution systemHERZOG RAILROAD SERVICES INC·Filed 2022·Granted Oct 7, 2025·0 cites·24 claims
- 0555US2025263892A1Low profile rail clamp assemblyHERZOG RAILROAD SERVICES INC·Filed 2025·Application pending·0 cites
- 0650US12473696B2Rail tie distribution control systemHERZOG RAILROAD SERVICES INC·Filed 2022·Granted Nov 18, 2025·0 cites·21 claims
- 0749US11548537B2Centering apparatus for hopper car doorsHERZOG RAILROAD SERVICES INC·Filed 2020·Granted Jan 10, 2023·0 cites·10 claims
- 0848US11408131B2Track-lifting and ballast-spreading apparatusHERZOG RAILROAD SERVICES INC·Filed 2020·Granted Aug 9, 2022·0 cites·20 claims
- 0947US6189864B1Splined shaft assembly for clutch support apparatusGRAY AUTOMOTIVE PRODUCTS INC·Filed 1999·Granted Feb 20, 2001·13 cites·15 claims
- 1041US11858541B2Articulated rail-transport carHERZOG RAILROAD SERVICES INC·Filed 2020·Granted Jan 2, 2024·0 cites·24 claims
- 1129US10160333B2Backup power system for railroad power unitsHERZOG RAILROAD SERVICES INC·Filed 2016·Granted Dec 25, 2018·0 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Tony Shirk files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →