Inventor · disambiguated record
Jan Freyer
Also filed as: FREYER JAN
8 granted patents·322 citations·filing 1988–2010
89Inventor score
Technology areasE21B
Top patents by PatentIndex Score
8 records- 0195US7143832B2Well packingHALLIBURTON ENERGY SERV INC·Filed 2001·Granted Dec 5, 2006·179 cites·25 claims
- 0283US8051914B2Well packingHALLIBURTON ENERGY SERV INC·Filed 2010·Granted Nov 8, 2011·6 cites·41 claims
- 0383US7472757B2Well packingHALLIBURTON ENERGY SERV INC·Filed 2006·Granted Jan 6, 2009·18 cites·20 claims
- 0480US5069488AMethod and a device for movement-compensation in riser pipesSMEDVIG IPR AS·Filed 1989·Granted Dec 3, 1991·81 cites·12 claims
- 0562US7832491B2Well packingHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Nov 16, 2010·5 cites·27 claims
- 0653USD317298SCable protectorLASALLE IPR AS·Filed 1988·Granted Jun 4, 1991·8 cites·1 claims
- 0739US5655607ADownhole tool for pressure testing of oil and gas wellsSMEDVIG TECHNOLOGY AS·Filed 1994·Granted Aug 12, 1997·23 cites·10 claims
- 0833USD317150SCable protectorLASALLE IPR AS·Filed 1988·Granted May 28, 1991·2 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Jan Freyer 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 →