Inventor
OSENDORF RICHARD J
US29 patents
⚠️ This page may combine multiple inventors who share the name “OSENDORF RICHARD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DONALDSON CO INC
24 patentsUS5306321AApr 26, 1994
Layered air filter medium having improved efficiency and pleatability
DONALDSON CO INC141 citations99
US7736410B2Jun 15, 2010
Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
DONALDSON CO INC64 citations98
US7713321B2May 11, 2010
Air cleaner arrangements; components thereof; and, methods
DONALDSON CO INC87 citations98
US5743927AApr 28, 1998
Air filter element; assembly; and, method
DONALDSON CO INC98 citations98
US5647356AJul 15, 1997
Respirator cartridge with sealing fit test structure and method of use
DONALDSON CO INC168 citations98
US5427597AJun 27, 1995
Layered air filter medium having improved efficiency and pleatability
DONALDSON CO INC130 citations98
US4863499ASep 5, 1989
Anti-duffusion chemical breather assembly for disk drives
DONALDSON CO INC135 citations98
US8945268B2Feb 3, 2015
Seal arrangement for filter element; filter element assembly; and, methods
DONALDSON CO INC37 citations97
US8012233B2Sep 6, 2011
Filter cartridge for air cleaner
DONALDSON CO INC41 citations96
US5840094ANov 24, 1998
Air filter element; assembly; and, method
DONALDSON CO INC160 citations96
US4963171AOct 16, 1990
High efficiency filter and method of fabricating same
DONALDSON CO INC86 citations96
US5290345AMar 1, 1994
Refillable gas adsorption bed assembly and counterflow adsorber module
DONALDSON CO INC96 citations95
US10864475B2Dec 15, 2020
Air filter arrangement; assembly; and, methods
DONALDSON CO INC19 citations93
US10029198B2Jul 24, 2018
Assemblies; components and filter features thereof; and, methods of use and assembly
DONALDSON CO INC26 citations92
US7972404B2Jul 5, 2011
Air cleaner arrangements; components thereof; and, methods
DONALDSON CO INC71 citations92
US7708797B2May 4, 2010
Air cleaner configured for receipt of various sized filter cartridges; components thereof; and, methods
DONALDSON CO INC36 citations92
US11117085B2Sep 14, 2021
Seal arrangement for filter element; filter element assembly; and, methods
DONALDSON CO INC5 citations83
US10518204B2Dec 31, 2019
Assemblies; components and filter features thereof; and, methods of use and assembly
DONALDSON CO INC4 citations83
US4218223AAug 19, 1980
Pre-cleaner for combustion engines
DONALDSON CO INC23 citations79
US11097215B2Aug 24, 2021
Assemblies; components and filter features thereof; and, methods of use and assembly
DONALDSON CO INC2 citations72
US10507423B2Dec 17, 2019
Seal arrangement for filter element; filter element assembly; and, methods
DONALDSON CO INC2 citations72
US11666843B2Jun 6, 2023
Assemblies; components and filter features thereof; and, methods of use and assembly
DONALDSON CO INC0 citations61
USD468007SDec 31, 2002
Pleat spacer for air filter
DONALDSON CO INC2 citations60
USD405519SFeb 9, 1999
Filter element frame member
DONALDSON CO INC4 citations60