Inventor · disambiguated record
David H. Halvorson
Also filed as: HALVORSON DAVID · HALVORSON DAVID H
9 granted patents·1 pending application·482 citations·filing 1998–2018
91Inventor score
Files withWABTEC RAILWAY ELECTRONICS2WESTINGHOUSE AIR BRAKE CO2WESTINGHOUSE AIR BRAKE TECH CORP2HALVORSON DAVID1MOTIENT SERV INC1
Top patents by PatentIndex Score
10 records- 0195US6273521B1Electronic air brake control system for railcarsWESTINGHOUSE AIR BRAKE TECH CORP·Filed 1998·Granted Aug 14, 2001·98 cites·35 claims
- 0291US5986579AMethod and apparatus for determining railcar order in a trainWESTINGHOUSE AIR BRAKE CO·Filed 1998·Granted Nov 16, 1999·76 cites·30 claims
- 0390US7639998B1RF receiver utilizing dynamic power managementROCKWELL COLLINS INC·Filed 2007·Granted Dec 29, 2009·25 cites·29 claims
- 0487US6360998B1Method and apparatus for controlling trains by determining a direction taken by a train through a railroad switchWESTINGHOUSE AIR BRAKE CO·Filed 1998·Granted Mar 26, 2002·72 cites·20 claims
- 0587US6114974AMethod and apparatus for determining railcar order in a trainWABTEC RAILWAY ELECTRONICS·Filed 1999·Granted Sep 5, 2000·57 cites·12 claims
- 0685US6377215B1Apparatus and method for detecting railroad locomotive turns by monitoring truck orientationWABTEC RAILWAY ELECTRONICS·Filed 1998·Granted Apr 23, 2002·65 cites·20 claims
- 0781US6208859B1Service preemption for mobile terminals in a mobile satellite communications systemMOTIENT SERV INC·Filed 1998·Granted Mar 27, 2001·75 cites·43 claims
- 0842US6127747AMethod and apparatus for detecting leakage current on a two wire DC or AC power lineWESTINGHOUSE AIR BRAKE TECH CORP·Filed 1999·Granted Oct 3, 2000·11 cites·15 claims
- 0936US2019142646A1Modifiable bandage system and methodHALVORSON DAVID·Filed 2018·Application pending·0 cites
- 1031US6208246B1Method and apparatus for improving railcar visibility at grade crossingsWABTEC RAILWAY ELECTRONICS INC·Filed 1998·Granted Mar 27, 2001·3 cites·32 claims
Join the waitlist — get patent alerts
Get an alert when David H. Halvorson 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 →