Assignee
SAFETRAN SYSTEMS CORP
US·25 granted patents·451 citations·filing 1974–2006
Top patents by PatentIndex Score
25 records- 0188US5751569AGeographic train controlSAFETRAN SYSTEMS CORP·Filed 1996·Granted May 12, 1998·85 cites·7 claims
- 0287US7575202B2Apparatus and methods for providing relatively constant warning time at highway-rail crossingsSAFETRAN SYSTEMS CORP·Filed 2005·Granted Aug 18, 2009·34 cites·22 claims
- 0381US7353093B2Template crossing design and programming for highway-rail grade crossingsSAFETRAN SYSTEMS CORP·Filed 2005·Granted Apr 1, 2008·21 cites·22 claims
- 0476US4033074APortable rail sawSAFETRAN SYSTEMS CORP·Filed 1975·Granted Jul 5, 1977·25 cites·6 claims
- 0572US4369942ASignal control systemSAFETRAN SYSTEMS CORP·Filed 1979·Granted Jan 25, 1983·24 cites·7 claims
- 0671US3952978ACantilever arm signal assemblySAFETRAN SYSTEMS CORP·Filed 1974·Granted Apr 27, 1976·29 cites·26 claims
- 0764US6463337B1Railroad vital signal output module with cryptographic safe driveSAFETRAN SYSTEMS CORP·Filed 1999·Granted Oct 8, 2002·26 cites·20 claims
- 0861US4219969APivoting breakaway coupling systemSAFETRAN SYSTEMS CORP·Filed 1978·Granted Sep 2, 1980·25 cites·12 claims
- 0960US7155358B2Highway-rail grade crossing remote setup, calibration and troubleshootingSAFETRAN SYSTEMS CORP·Filed 2005·Granted Dec 26, 2006·6 cites·16 claims
- 1060US5029780AMulti-frequency railroad grade crossing termination shunt assemblySAFETRAN SYSTEMS CORP·Filed 1990·Granted Jul 9, 1991·23 cites·6 claims
- 1160US3977634AComputer for motion sensing device setupSAFETRAN SYSTEMS CORP·Filed 1975·Granted Aug 31, 1976·13 cites·8 claims
- 1258US7699271B2Adjustable support for a railroad crossing gate armSAFETRAN SYSTEMS CORP·Filed 2006·Granted Apr 20, 2010·4 cites·16 claims
- 1356US5737173ARailroad track circuit vital relay controlSAFETRAN SYSTEMS CORP·Filed 1996·Granted Apr 7, 1998·16 cites·26 claims
- 1456US4417229AMeans for use on a railroad to distinguish between traction current and signal currentSAFETRAN SYSTEMS CORP·Filed 1982·Granted Nov 22, 1983·15 cites·10 claims
- 1556US4415134AHall effect track circuit receiving elementSAFETRAN SYSTEMS CORP·Filed 1982·Granted Nov 15, 1983·15 cites·4 claims
- 1654US7441727B2Highway-rail grade crossing controller with out of service modeSAFETRAN SYSTEMS CORP·Filed 2005·Granted Oct 28, 2008·4 cites·9 claims
- 1754US4703303ASolid state railroad lights/gate controllerSAFETRAN SYSTEMS CORP·Filed 1986·Granted Oct 27, 1987·22 cites·4 claims
- 1847US7690702B2Lock bar for railroad gate warning mechanismSAFETRAN SYSTEMS CORP·Filed 2005·Granted Apr 6, 2010·3 cites·14 claims
- 1946US5022613AAC and battery backup supply for a railroad crossing gateSAFETRAN SYSTEMS CORP·Filed 1990·Granted Jun 11, 1991·14 cites·4 claims
- 2037US5834914ARailroad crossing gate mechanism control systemSAFETRAN SYSTEMS CORP·Filed 1997·Granted Nov 10, 1998·9 cites·7 claims
- 2136US5852350ARailroad crossing gate control system including a separate maintenance relaySAFETRAN SYSTEMS CORP·Filed 1997·Granted Dec 22, 1998·9 cites·7 claims
- 2234US4509024AImpedance bondSAFETRAN SYSTEMS CORP·Filed 1983·Granted Apr 2, 1985·5 cites·4 claims
- 2332US5451857ATemperature compensated, regulated power supply and battery charger for railroad signal useSAFETRAN SYSTEMS CORP·Filed 1992·Granted Sep 19, 1995·10 cites·12 claims
- 2432US4895325ARailroad gate arm lamp circuitSAFETRAN SYSTEMS CORP·Filed 1988·Granted Jan 23, 1990·6 cites·3 claims
- 2531US4298225ARail handling tongsSAFETRAN SYSTEMS CORP·Filed 1979·Granted Nov 3, 1981·8 cites·10 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →