Inventor · disambiguated record
John J. Helstrom
Also filed as: HELSTROM JOHN J
6 granted patents·273 citations·filing 1983–1991
86Inventor score
Top patents by PatentIndex Score
6 records- 0195US5143598AMethods of tar sand bitumen recoveryAMOCO CORP·Filed 1988·Granted Sep 1, 1992·159 cites·35 claims
- 0290US4722782AMethod for solvent treating of tar sands with water displacementSTANDARD OIL CO·Filed 1983·Granted Feb 2, 1988·53 cites·5 claims
- 0366US4526675AHydrocarbon conversion methodSTANDARD OIL CO INDIANA·Filed 1983·Granted Jul 2, 1985·19 cites·19 claims
- 0458US5362379AOpen-bottomed cyclone with gas inlet tube and methodAMOCO CORP·Filed 1991·Granted Nov 8, 1994·19 cites·15 claims
- 0555US4514279ASolid hydrocarbon liquefaction with a catalyst having chromium and molybdenumSTANDARD OIL CO INDIANA·Filed 1983·Granted Apr 30, 1985·13 cites·5 claims
- 0643US5279727AOpen-bottomed cyclone with solids separation tube and methodAMOCO CORP·Filed 1991·Granted Jan 18, 1994·10 cites·6 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →