P

Inventor

HIEMSTRA JOHN

US6 patents
⚠️ This page may combine multiple inventors who share the name “HIEMSTRA JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DONALDSON CO INC

4 patents
US6354398B1Mar 12, 2002

Mufflers for use with engine retarders; and methods

DONALDSON CO INC33 citations90
US6082487AJul 4, 2000

Mufflers for use with engine retarders; and methods

DONALDSON CO INC34 citations90
US7294162B2Nov 13, 2007

Exhaust filter

DONALDSON CO INC7 citations66
US9273585B2Mar 1, 2016

System and method for regenerating an auxiliary power unit exhaust filter

DONALDSON CO INC0 citations47

HIEMSTRA JOHN

1 patent
US8776502B2Jul 15, 2014

System and method for regenerating an auxiliary power unit exhaust filter

HIEMSTRA JOHN6 citations74

IRLBECK JILL N

1 patent
US8061129B2Nov 22, 2011

System and method to regenerate a diesel particulate filter

IRLBECK JILL N2 citations48