P

Inventor

SMRCKA NANCY K

US5 patents
⚠️ This page may combine multiple inventors who share the name “SMRCKA NANCY K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHEVRON USA INC

3 patents
US7687445B2Mar 30, 2010

Lower ash lubricating oil with low cold cranking simulator viscosity

CHEVRON USA INC14 citations82
US7473346B2Jan 6, 2009

Method for using medium-speed diesel engine oil

CHEVRON USA INC6 citations72
US7435328B2Oct 14, 2008

Process for making medium-speed diesel engine oil

CHEVRON USA INC7 citations72

CHEVRON CORP

1 patent
US7374658B2May 20, 2008

Medium speed diesel engine oil

CHEVRON CORP28 citations91

CHEVRON RES & TECH

1 patent
US5370805ADec 6, 1994

Chlorine-free diesel engine lubricating composition

CHEVRON RES & TECH41 citations87