Inventor
Elaine S. Yamaguchi
Inventor
El Cerrito, CA, US
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Mprimary
C10MLubricating compositions42%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions42%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium10%
F02FCylinders, pistons or casings, for combustion engines4%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds2%
PatentTitleYear
9,315,758'Lubricating oil compositions'20169,150,811'Method for improving copper corrosion performance'20159,062,273'Lubricating oil compositions containing titanium complexes'20158,993,496'Method for improving fluorocarbon elastomer seal compatibility'20158,969,265'Lubricating oil compositions'20158,933,001'Method for improving fluorocarbon elastomer seal compatibility'20158,901,050'Method for improving copper corrosion performance'20148,716,202'Method for improving fluorocarbon elastomer seal compatibility'20148,709,984'Lubricating oil compositions'20148,153,566'Lubricating oil compositions'20128,084,404'Crankcase lubricating oil composition for protection of silver bearings in locomotive diesel engines'20118,067,346'Tetraoxy-silane lubricating oil compositions'20117,867,960'Method for forming tetraoxy-silane derived antiwear films and lubricating oil compositions therefrom'20116,001,779'Lubricating oil composition having an ashless wear inhibitor'19995,728,656'Lower-ash lubricating oil having ultra-neutral zinc dialkyldithiophosphates'19984,729,848'Metal salts of alkyl catechol dithiophosphoric acids and oil compositions containing the salts'19884,668,409'Lubricating oil compositions containing overbased calcium sulfonates and metal salts of alkyl catechol dithiophosphoric acid'19874,487,704'Lubricating oil compositions containing an overbased calcium sulfonate and a zinc cyclic hydrocarbyl dithiophosphate-succinimide complex'19844,483,775'Lubricating oil compositions containing overbased calcium sulfonates'19844,443,360'Oil-soluble zinc cyclic hydrocarbyl dithiophosphate-succinimide complex and lubricating oil compositions containing same'19844,436,640'Glycolate dithiophosphoric acids, metal salts thereof and oil compositions containing the salts'19844,306,984'Oil soluble metal (lower) dialkyl dithiophosphate succinimide complex and lubricating oil compositions containing same'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1988Patents assigned to CHEVRON RES (7)· patent assignee history
1981–2015Based in El Cerrito, CA, US· patent location history
2011–2016Patents assigned to YAMAGUCHI ELAINE S (11)· patent assignee history
2011–2016Patents assigned to CHEVRON ORONITE CO (10)· patent assignee history
2011–2016Patents assigned to NG KAM-SIK (7)· patent assignee history
2011–2015Patents assigned to NELSON KENNETH D (5)· patent assignee history
2012–2016Based in Hercules, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| YAMAGUCHI ELAINE Sself | 11 | 2011–2016 |
| CHEVRON ORONITE CO | 10 | 2011–2016 |
| CHEVRON RES | 7 | 1981–1988 |
| NG KAM-SIK | 7 | 2011–2016 |
| NELSON KENNETH D | 5 | 2011–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| El Cerrito, California, US | 20 | 1981–2015 |
| Hercules, California, US | 2 | 2012–2016 |