Assignee
HERZOG CONTRACTING CORP
US·25 granted patents·5 pending applications·611 citations·filing 1978–2014
Top patents by PatentIndex Score
30 records- 0198US7707944B2Method and apparatus for applying railway ballastHERZOG CONTRACTING CORP·Filed 2006·Granted May 4, 2010·23 cites·2 claims
- 0291US7707943B2Self-propelled rail unloading machineHERZOG CONTRACTING CORP·Filed 2006·Granted May 4, 2010·10 cites·16 claims
- 0390US7765935B2Rail threading mechanismHERZOG CONTRACTING CORP·Filed 2008·Granted Aug 3, 2010·8 cites·30 claims
- 0490US7152347B2Method and apparatus for applying railway ballastHERZOG CONTRACTING CORP·Filed 2004·Granted Dec 26, 2006·27 cites·17 claims
- 0590US6981452B2Method and apparatus for unloading ribbon rails from rail carsHERZOG CONTRACTING CORP·Filed 2004·Granted Jan 3, 2006·28 cites·4 claims
- 0688US5386727ADynamic rail longitudinal stress measuring systemHERZOG CONTRACTING CORP·Filed 1993·Granted Feb 7, 1995·120 cites·43 claims
- 0785US5657700ARailroad hopper car with ballast distributing blades and remote control systemHERZOG CONTRACTING CORP·Filed 1995·Granted Aug 19, 1997·49 cites·26 claims
- 0885US5361704ARailroad track laying system with multiple railroad tie handlingHERZOG CONTRACTING CORP·Filed 1993·Granted Nov 8, 1994·30 cites·1 claims
- 0983US7437997B2Method for delivering replacement rail ties using GPS techniquesHERZOG CONTRACTING CORP·Filed 2008·Granted Oct 21, 2008·9 cites·1 claims
- 1078US6526339B1GPS controlled multiple source material applicationHERZOG CONTRACTING CORP·Filed 2000·Granted Feb 25, 2003·44 cites·12 claims
- 1178US4175902AApparatus for loading and unloading railroad carsHERZOG CONTRACTING CORP·Filed 1978·Granted Nov 27, 1979·25 cites·10 claims
- 1273US4921732ARailroad tie service vehicle and method for spray application of a preservativeHERZOG CONTRACTING CORP·Filed 1988·Granted May 1, 1990·27 cites·41 claims
- 1373US4190394AMethod for loading and unloading railroad carsHERZOG CONTRACTING CORP·Filed 1978·Granted Feb 26, 1980·30 cites·12 claims
- 1467US9676397B2Clamp assemblyHERZOG CONTRACTING CORP·Filed 2014·Granted Jun 13, 2017·2 cites·12 claims
- 1567US5289780AMaterial handling railroad freightcar-mounted gantry and crane with toppling prevention and supplemental support upon derailmentHERZOG CONTRACTING CORP·Filed 1992·Granted Mar 1, 1994·25 cites·14 claims
- 1666US5423268ARailroad hopper car with ballast distributing blade and hopper door and blade control apparatus and methodHERZOG CONTRACTING CORP·Filed 1993·Granted Jun 13, 1995·24 cites·28 claims
- 1760US6704626B1Logistics system and method with position controlHERZOG CONTRACTING CORP·Filed 1999·Granted Mar 9, 2004·22 cites·2 claims
- 1859US5522543AWater truck with exhaust gas pressurization systemHERZOG CONTRACTING CORP·Filed 1994·Granted Jun 4, 1996·28 cites·21 claims
- 1958US2009193950A1Automatic Rail SawHERZOG CONTRACTING CORP·Filed 2009·Application pending·0 cites
- 2056USRE36685ERailroad hopper car with ballast distributing blades and remote control systemHERZOG CONTRACTING CORP·Filed 1998·Granted May 9, 2000·21 cites·27 claims
- 2156US5311822ABallast hopper door control apparatus and method with independently and selectively actuated motors in response to uniquely coded signalsHERZOG CONTRACTING CORP·Filed 1992·Granted May 17, 1994·13 cites·18 claims
- 2252US2010107925A1Method and apparatus for applying railway ballastHERZOG CONTRACTING CORP·Filed 2010·Application pending·0 cites
- 2350US6561742B1Loading and unloading apparatus for railcarsHERZOG CONTRACTING CORP·Filed 1999·Granted May 13, 2003·20 cites·14 claims
- 2450US2005216142A1Logistics System and Method With Position ControlHERZOG CONTRACTING CORP·Filed 2005·Application pending·0 cites
- 2538US5628606ALoading/unloading apparatus for railroad carsHERZOG CONTRACTING CORP·Filed 1996·Granted May 13, 1997·11 cites·13 claims
- 2636US2005235864A1Method for delivering replacement rail ties using GPS techniquesHERZOG CONTRACTING CORP·Filed 2004·Application pending·0 cites
- 2736US2005223833A1Transmission with top mounted shift mechanismHERZOG CONTRACTING CORP·Filed 2004·Application pending·0 cites
- 2835US5191723AApparatus and method for recovering spent lime for use as a nutritional flowing agent for poultry and animal feedsHERZOG CONTRACTING CORP·Filed 1991·Granted Mar 9, 1993·3 cites·14 claims
- 2929US5527144ALoading/unloading apparatus for railroad carsHERZOG CONTRACTING CORP·Filed 1994·Granted Jun 18, 1996·3 cites·10 claims
- 3026US5275506APerforated drainpipe for railway decksHERZOG CONTRACTING CORP·Filed 1993·Granted Jan 4, 1994·9 cites·3 claims
Join the waitlist — get patent alerts
Get an alert when HERZOG CONTRACTING CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →