Inventor · disambiguated record
J. Ronald Spence
Also filed as: SPENCE J RONALD
11 granted patents·97 citations·filing 1977–1985
89Inventor score
Top patents by PatentIndex Score
11 records- 0190US4362633AMolybdenum-containing aminated sulfurized olefin lubricating oil additivesSTANDARD OIL CO INDIANA·Filed 1980·Granted Dec 7, 1982·47 cites·11 claims
- 0255US4541940AStirred vortex tank reactor and method of CO2 addition for producing overbased petroleum sulfonatePHILLIPS PETROLEUM CO·Filed 1984·Granted Sep 17, 1985·8 cites·4 claims
- 0350US4352911ASulfurized/aminated mixture of ethylene-based polyolefin and polyisobutyleneSTANDARD OIL CO INDIANA·Filed 1981·Granted Oct 5, 1982·9 cites·15 claims
- 0446US4317739AAminated sulfurized olefin funtionalized with a boron compound and formaldehydeSTANDARD OIL CO INDIANA·Filed 1980·Granted Mar 2, 1982·8 cites·7 claims
- 0544US4320017ASulfurized/aminated mixture of ethylene-based polyolefin and polyisobutylene for lubricating oilSTANDARD OIL CO INDIANA·Filed 1980·Granted Mar 16, 1982·7 cites·1 claims
- 0642US4317738ADispersants and dispersant viscosity modifiers from oxidized-sulfurized olefinsSTANDARD OIL CO INDIANA·Filed 1980·Granted Mar 2, 1982·6 cites·17 claims
- 0739US4113443AAntistatic additivesSTANDARD OIL CO INDIANA·Filed 1977·Granted Sep 12, 1978·6 cites·11 claims
- 0837US4664246AApparatus for producing and recovering overbased petroleum sulfonatePHILLIPS PETROLEUM CO·Filed 1985·Granted May 12, 1987·3 cites·9 claims
- 0932US4543194APrecarbonation in overbasing calcium petroleum sulfonatesPHILLIPS PETROLEUM CO·Filed 1984·Granted Sep 24, 1985·1 cites·12 claims
- 1031US4317772AProcess for preparation of aminated sulfurized olefins using alkaline earth metal compoundsSTANDARD OIL CO INDIANA·Filed 1980·Granted Mar 2, 1982·2 cites·5 claims
- 1128US4485022ALubricating compositions containing normal-alkyl substituted 2-thiazoline disulfide antioxidantsPHILLIPS PETROLEUM CO·Filed 1983·Granted Nov 27, 1984·0 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when J. Ronald Spence 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 →