Inventor · disambiguated record
William A. Petit
Also filed as: PETIT WILLIAM A
12 granted patents·626 citations·filing 1976–1995
93Inventor score
Technology areasB61L
Top patents by PatentIndex Score
12 records- 0196US4711418ARadio based railway signaling and traffic control systemGEN SIGNAL CORP·Filed 1986·Granted Dec 8, 1987·199 cites·19 claims
- 0295US4498650AMicroprocessor based track circuit for occupancy detection and bidirectional code communicationGEN SIGNAL CORP·Filed 1982·Granted Feb 12, 1985·102 cites·23 claims
- 0391US5364047AAutomatic vehicle control and location systemGEN RAILWAY SIGNAL CORP·Filed 1993·Granted Nov 15, 1994·127 cites·15 claims
- 0489US4728063ARailway signalling system especially for broken rail detectionGEN SIGNAL CORP·Filed 1986·Granted Mar 1, 1988·58 cites·8 claims
- 0579US5098044AHighway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipmentGEN RAILWAY SIGNAL CORP·Filed 1991·Granted Mar 24, 1992·42 cites·14 claims
- 0673US4065081AAlternating current track circuitsGEN SIGNAL CORP·Filed 1976·Granted Dec 27, 1977·28 cites·5 claims
- 0766US4994969AAutomatic yard operation using a fixed block systemGEN SIGNAL CORP·Filed 1989·Granted Feb 19, 1991·22 cites·6 claims
- 0863US5092544AHighway crossing control system for railroads utilizing a communications link between the train locomotive and the crossing protection equipmentGEN RAILWAY SIGNAL CORP·Filed 1989·Granted Mar 3, 1992·20 cites·29 claims
- 0944US4611775ARailway track switch control apparatusGEN SIGNAL CORP·Filed 1983·Granted Sep 16, 1986·8 cites·11 claims
- 1041US4451018ANon contact isolated current detectorGEN SIGNAL CORP·Filed 1982·Granted May 29, 1984·7 cites·7 claims
- 1138US5271584APulse code railway signalling systemGEN RAILWAY SIGNAL·Filed 1992·Granted Dec 21, 1993·12 cites·15 claims
- 1229US5671348ANon-vital turn off of vital output circuitGEN RAILWAY SIGNAL CORP·Filed 1995·Granted Sep 23, 1997·1 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →