Inventor · disambiguated record
Roy E. Campbell
Also filed as: CAMPBELL ROY E
16 granted patents·2,774 citations·filing 1976–2001
97Inventor score
Technology areasF25J
Top patents by PatentIndex Score
16 records- 0199US5568737AHydrocarbon gas processingELCOR CORP·Filed 1994·Granted Oct 29, 1996·230 cites·81 claims
- 0299US4889545AHydrocarbon gas processingELCOR CORP·Filed 1988·Granted Dec 26, 1989·174 cites·72 claims
- 0399US4854955AHydrocarbon gas processingELCOR CORP·Filed 1988·Granted Aug 8, 1989·198 cites·28 claims
- 0498US6182469B1Hydrocarbon gas processingELCOR CORP·Filed 1999·Granted Feb 6, 2001·223 cites·13 claims
- 0598US5275005AGas processingELCOR CORP·Filed 1992·Granted Jan 4, 1994·157 cites·16 claims
- 0698US4869740AHydrocarbon gas processingELCOR CORP·Filed 1988·Granted Sep 26, 1989·152 cites·35 claims
- 0798US4278457AHydrocarbon gas processingORTLOFF CORP·Filed 1977·Granted Jul 14, 1981·195 cites·7 claims
- 0898US4171964AHydrocarbon gas processingORTLOFF CORP·Filed 1976·Granted Oct 23, 1979·162 cites·22 claims
- 0998US4157904AHydrocarbon gas processingORTLOFF CORP·Filed 1977·Granted Jun 12, 1979·195 cites·32 claims
- 1098US4140504AHydrocarbon gas processingORTLOFF CORP·Filed 1976·Granted Feb 20, 1979·187 cites·16 claims
- 1197US6526777B1LNG production in cryogenic natural gas processing plantsELK CORP·Filed 2001·Granted Mar 4, 2003·128 cites·21 claims
- 1297US5881569AHydrocarbon gas processingELCOR CORP·Filed 1997·Granted Mar 16, 1999·166 cites·67 claims
- 1397US5771712AHydrocarbon gas processingELCOR CORP·Filed 1996·Granted Jun 30, 1998·170 cites·10 claims
- 1496US5983664AHydrocarbon gas processingELCOR CORP·Filed 1998·Granted Nov 16, 1999·144 cites·7 claims
- 1595US5555748AHydrocarbon gas processingELCOR CORP·Filed 1995·Granted Sep 17, 1996·149 cites·17 claims
- 1692US4061481ANatural gas processingORTLOFF CORP·Filed 1976·Granted Dec 6, 1977·144 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Roy E. Campbell 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 →