Inventor
John E. Johnston
Inventor
Westfield, NJ, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Mprimary
C10MLubricating compositions26%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions23%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds21%
C10LFuels not otherwise provided for21%
B29CShaping or joining of plastics3%
C08LCompositions of macromolecular compounds3%
F02DControlling combustion engines3%
Y02TClimate change mitigation technologies related to transportation3%
PatentTitleYear
7,052,597'Tuning fuel composition for driving cycle conditions in spark ignition engines'20066,206,940'Fuel formulations to extend the lean limit (law770)'20015,674,822'Synthetic ester base stocks for low emission lubricants'19975,356,551'Multifunctional viscosity index improver for lubricating oil compositions'19945,262,075'Multifunctional viscosity index improver exhibitng improved low temperature viscometric properties'19935,252,238'Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties'19935,167,848'Grafted viscosity index improver'19925,053,151'Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties'19915,035,821'End-capped multifunctional viscosity index improver'19914,900,461'Viscosity modifier polymers (E-98)'19904,804,794'Viscosity modifier polymers'19894,749,505'Olefin polymer viscosity index improver additive useful in oil compositions'19884,507,515'Lubricating oil compositions containing ethylene-alpha-olefin polymers of controlled sequence distribution and molecular heterogeneity'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2001Patents assigned to EXXON RESEARCH ENGINEERING CO (2)· patent assignee history
1985–1994Based in Westfield, NJ, US· patent location history
1988–1997Patents assigned to EXXON CHEMICAL PATENTS INC (10)· patent assignee history
1997–2006Based in Warren, NJ, US· patent location history
2006Patents assigned to TOYOTA MOTOR CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EXXON CHEMICAL PATENTS INC | 10 | 1988–1997 |
| EXXON RESEARCH ENGINEERING CO | 2 | 1985–2001 |
| TOYOTA MOTOR CORP | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Westfield, New Jersey, US | 10 | 1985–1994 |
| Warren, New Jersey, US | 3 | 1997–2006 |