Donald Francis Engel

Person

Prior Lake, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 11,679,352
- Issue date Jun 20, 2023
- Donaldson Company, Inc.
- Paul Counlonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 11,185,810
- Issue date Nov 30, 2021
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 11,123,673
- Issue date Sep 21, 2021
- Donaldson Company, Inc.
- Paul Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 10,556,202
- Issue date Feb 11, 2020
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 10,343,101
- Issue date Jul 9, 2019
- Donaldson Company, Inc.
- Paul Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 10,252,206
- Issue date Apr 9, 2019
- Donaldson Company, Inc.
- Paul Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 9,782,713
- Issue date Oct 10, 2017
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 9,283,507
- Issue date Mar 15, 2016
- Donaldson Company, Inc.
- Paul Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 9,162,172
- Issue date Oct 20, 2015
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housing; assemblies; and, methods
- Patent number 8,641,795
- Issue date Feb 4, 2014
- Donaldson Company, Inc.
- Paul Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 8,562,707
- Issue date Oct 22, 2013
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housings; assemblies; and, methods
- Patent number 8,343,245
- Issue date Jan 1, 2013
- Donaldson Company, Inc.
- Paul R. Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 8,206,479
- Issue date Jun 26, 2012
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 8,002,869
- Issue date Aug 23, 2011
- Donaldson Company, Inc.
- Larry Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; side-entry housings; and methods
- Patent number 7,981,183
- Issue date Jul 19, 2011
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; housing; assemblies; and, methods
- Patent number 7,905,936
- Issue date Mar 15, 2011
- Donaldson Company, Inc.
- Paul R. Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filter arrangements; side-entry housings; and methods
- Patent number 7,655,074
- Issue date Feb 2, 2010
- Donaldson Company, Inc.
- Larry R. Nepsund
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Air filter having fluted filter media
- Patent number 7,635,403
- Issue date Dec 22, 2009
- Donaldson Company, Inc.
- Larry R. Nepsund
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 7,455,707
- Issue date Nov 25, 2008
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Air filter having fluted filter media
- Patent number 7,396,375
- Issue date Jul 8, 2008
- Donaldson Company, Inc.
- Larry R. Nepsund
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 6,521,009
- Issue date Feb 18, 2003
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement
- Patent number 6,413,289
- Issue date Jul 2, 2002
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement
- Patent number 6,322,602
- Issue date Nov 27, 2001
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement
- Patent number 6,258,145
- Issue date Jul 10, 2001
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Inside surface of a filter element having insert construction
- Patent number D425977
- Issue date May 30, 2000
- Donaldson Company, Inc.
- Donald Francis Engel
- D23 - Environmental heating and cooling
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 6,004,366
- Issue date Dec 21, 1999
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 5,938,804
- Issue date Aug 17, 1999
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 5,897,676
- Issue date Apr 27, 1999
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 5,690,712
- Issue date Nov 25, 1997
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Reverse flow air filter arrangement and method
- Patent number 5,613,992
- Issue date Mar 25, 1997
- Donaldson Company, Inc.
- Donald F. Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20220072465
- Publication date Mar 10, 2022
- Donaldson Company, Inc.
- Paul Counlonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20200254376
- Publication date Aug 13, 2020
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20190336902
- Publication date Nov 7, 2019
- Donaldson Company, Inc.
- PAUL COULONVAUX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20180126317
- Publication date May 10, 2018
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20170036156
- Publication date Feb 9, 2017
- Donaldson Company, Inc.
- PAUL COULONVAUX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20160193559
- Publication date Jul 7, 2016
- Donaldson Company, Inc.
- PAUL COULONVAUX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20160136562
- Publication date May 19, 2016
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20140360144
- Publication date Dec 11, 2014
- Donaldson Company, Inc.
- PAUL COULONVAUX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20140102057
- Publication date Apr 17, 2014
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSING; ASSEMBLIES; AND, METHODS
- Publication number 20130111858
- Publication date May 9, 2013
- Donaldson Company, Inc.
- PAUL COULONVAUX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20120272627
- Publication date Nov 1, 2012
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS
- Publication number 20120031058
- Publication date Feb 9, 2012
- Donaldson Company, Inc.
- Paul R. Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20110296665
- Publication date Dec 8, 2011
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTER ARRANGEMENTS; SIDE-ENTRY HOUSINGS; AND METHODS
- Publication number 20100132321
- Publication date Jun 3, 2010
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR FILTER HAVING FLUTED FILTER MEDIA
- Publication number 20080271423
- Publication date Nov 6, 2008
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Air cleaner assembly; components; and, methods
- Publication number 20080066435
- Publication date Mar 20, 2008
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Air cleaner assembly; components; and, methods
- Publication number 20080041026
- Publication date Feb 21, 2008
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter Arrangements; Housing; Assemblies; and, Methods
- Publication number 20070289265
- Publication date Dec 20, 2007
- Donaldson Company, Inc.
- Paul R. Coulonvaux
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Filter arrangements; side-entry housings; and methods
- Publication number 20070175194
- Publication date Aug 2, 2007
- Donaldson Company, Inc.
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Air filter having fluted filter media
- Publication number 20050229561
- Publication date Oct 20, 2005
- Larry R. Nepsund
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
[REVERSE FLOW AIR FILTER ARRANGEMENT AND METHOD]
- Publication number 20040148913
- Publication date Aug 5, 2004
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Reverse flow air filter arrangement and method
- Publication number 20040006955
- Publication date Jan 15, 2004
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Reverse flow air filter arrangement and method
- Publication number 20020092282
- Publication date Jul 18, 2002
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Reverse flow air filter arrangement and method
- Publication number 20020014058
- Publication date Feb 7, 2002
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Reverse flow air filter arrangement
- Publication number 20010020419
- Publication date Sep 13, 2001
- Donaldson Company, Inc.
- Donald Francis Engel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Donald Francis Engel

Person

Patents Grantslast 30 patents

Filter arrangements; housings; assemblies; and, methods

Air filter having fluted filter media

Filter arrangements; housings; assemblies; and, methods

Air filter having fluted filter media

Filter arrangements; housings; assemblies; and, methods

Filter arrangements; housings; assemblies; and, methods

Air filter having fluted filter media

Filter arrangements; housings; assemblies; and, methods

Air filter having fluted filter media

Filter arrangements; housing; assemblies; and, methods

Air filter having fluted filter media

Filter arrangements; housings; assemblies; and, methods

Air filter having fluted filter media

Air filter having fluted filter media

Filter arrangements; side-entry housings; and methods

Filter arrangements; housing; assemblies; and, methods

Filter arrangements; side-entry housings; and methods

Air filter having fluted filter media

Reverse flow air filter arrangement and method

Air filter having fluted filter media

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement

Reverse flow air filter arrangement

Reverse flow air filter arrangement

Inside surface of a filter element having insert construction

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Patents Applicationslast 30 patents

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; HOUSING; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; HOUSINGS; ASSEMBLIES; AND, METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

FILTER ARRANGEMENTS; SIDE-ENTRY HOUSINGS; AND METHODS

AIR FILTER HAVING FLUTED FILTER MEDIA

Air cleaner assembly; components; and, methods

Air cleaner assembly; components; and, methods

Filter Arrangements; Housing; Assemblies; and, Methods

Filter arrangements; side-entry housings; and methods

Air filter having fluted filter media

[REVERSE FLOW AIR FILTER ARRANGEMENT AND METHOD]

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement and method

Reverse flow air filter arrangement