Inventor · disambiguated record
John E. Johnston
Also filed as: JOHNSTON JOHN E · JOHNSTON JOHN ERIC
13 granted patents·1 pending application·411 citations·filing 1983–2005
93Inventor score
Files withEXXON CHEMICAL PATENTS INC10EXXON RESEARCH ENGINEERING CO2TOYOTA MOTOR CORP1WEISSMAN WALTER1
Top patents by PatentIndex Score
14 records- 0196US4804794AViscosity modifier polymersEXXON CHEMICAL PATENTS INC·Filed 1987·Granted Feb 14, 1989·103 cites·94 claims
- 0292US4749505AOlefin polymer viscosity index improver additive useful in oil compositionsEXXON CHEMICAL PATENTS INC·Filed 1985·Granted Jun 7, 1988·69 cites·44 claims
- 0391US4507515ALubricating oil compositions containing ethylene-alpha-olefin polymers of controlled sequence distribution and molecular heterogeneityEXXON RESEARCH ENGINEERING CO·Filed 1983·Granted Mar 26, 1985·67 cites·22 claims
- 0487US4900461AViscosity modifier polymers (E-98)EXXON CHEMICAL PATENTS INC·Filed 1988·Granted Feb 13, 1990·41 cites·90 claims
- 0579US5035821AEnd-capped multifunctional viscosity index improverEXXON CHEMICAL PATENTS INC·Filed 1988·Granted Jul 30, 1991·29 cites·29 claims
- 0675US5167848AGrafted viscosity index improverEXXON CHEMICAL PATENTS INC·Filed 1989·Granted Dec 1, 1992·25 cites·101 claims
- 0771US5262075AMultifunctional viscosity index improver exhibitng improved low temperature viscometric propertiesEXXON CHEMICAL PATENTS INC·Filed 1992·Granted Nov 16, 1993·23 cites·149 claims
- 0866US7052597B2Tuning fuel composition for driving cycle conditions in spark ignition enginesTOYOTA MOTOR CORP·Filed 2001·Granted May 30, 2006·4 cites·10 claims
- 0958US6206940B1Fuel formulations to extend the lean limit (law770)EXXON RESEARCH ENGINEERING CO·Filed 1999·Granted Mar 27, 2001·15 cites·67 claims
- 1057US2006090727A1Tuning fuel composition for driving cycle conditions in spark ignition enginesWEISSMAN WALTER·Filed 2005·Application pending·0 cites
- 1151US5674822ASynthetic ester base stocks for low emission lubricantsEXXON CHEMICAL PATENTS INC·Filed 1995·Granted Oct 7, 1997·14 cites·8 claims
- 1251US5053151AMultifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric propertiesEXXON CHEMICAL PATENTS INC·Filed 1989·Granted Oct 1, 1991·10 cites·85 claims
- 1344US5356551AMultifunctional viscosity index improver for lubricating oil compositionsEXXON CHEMICAL PATENTS INC·Filed 1991·Granted Oct 18, 1994·7 cites·27 claims
- 1437US5252238AMultifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric propertiesEXXON CHEMICAL PATENTS INC·Filed 1991·Granted Oct 12, 1993·4 cites·85 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →