Inventor

STARK CHERYL J

US5 patents

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

LEVIJOKI STEPHEN PAUL

2 patents

US9133750B2Sep 15, 2015

Method and system for verifying the operation of an SCR catalyst

LEVIJOKI STEPHEN PAUL15 citations81

US8286419B2Oct 16, 2012

Exhaust diagnostic systems and methods for resetting after operation with poor reductant quality

LEVIJOKI STEPHEN PAUL9 citations81

GM GLOBAL TECH OPERATIONS INC

1 patent

US8047046B2Nov 1, 2011

Systems and method for monitoring urea level

GM GLOBAL TECH OPERATIONS INC2 citations58

KOWALKOWSKI JANEAN E

1 patent

US9080494B2Jul 14, 2015

Particulate filter monitoring methods and systems

KOWALKOWSKI JANEAN E0 citations49

ANILOVICH IGOR

1 patent

US8839602B2Sep 23, 2014

Non-methane hydrocarbon conversion efficiency diagnostic for a diesel after-treatment system

ANILOVICH IGOR0 citations40