Dean R. Duffy

Person

Woodbury, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Respirator including transversely-extending pleat and method of for...
- Patent number 12,150,502
- Issue date Nov 26, 2024
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Filtering face-piece respirator having folded flange
- Patent number 11,116,998
- Issue date Sep 14, 2021
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator having nose cushioning member
- Patent number 10,602,785
- Issue date Mar 31, 2020
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Respirator including contrast layer
- Patent number 10,576,314
- Issue date Mar 3, 2020
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator having darted mask body
- Patent number 10,238,158
- Issue date Mar 26, 2019
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Filtering face-piece respirator having strap-activated folded flange
- Patent number 10,182,603
- Issue date Jan 22, 2019
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator having nose notch
- Patent number 10,136,687
- Issue date Nov 27, 2018
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator dispenser
- Patent number 10,040,621
- Issue date Aug 7, 2018
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Respirator including contrast layer
- Patent number 9,868,002
- Issue date Jan 16, 2018
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Horizontal flat-fold filtering face-piece respirator having indicia...
- Patent number 9,826,786
- Issue date Nov 28, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator having nose cushioning member
- Patent number 9,770,057
- Issue date Sep 26, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator with stiffening member integral wit...
- Patent number 9,615,612
- Issue date Apr 11, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filter frame assembly with seal
- Patent number 9,610,528
- Issue date Apr 4, 2017
- 3M Innovative Properties Company
- Francis E. Porbeni
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filtering face-piece respirator having darted mask body
- Patent number 9,603,395
- Issue date Mar 28, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Filtering face-piece respirator having nose notch
- Patent number 9,603,396
- Issue date Mar 28, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Expandable face mask with reinforcing netting
- Patent number 9,012,013
- Issue date Apr 21, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Horizontal flat-fold filtering face-piece respirator having indicia...
- Patent number 8,881,729
- Issue date Nov 11, 2014
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Respirator having folded nose region
- Patent number D704824
- Issue date May 13, 2014
- 3M Innovation Properties Company
- Dean R. Duffy
- D24 - Medical and laboratory equipment
Information Patent Grant
Flat-fold filtering face-piece respirator having structural weld pa...
- Patent number 8,640,704
- Issue date Feb 4, 2014
- 3M Innovative Properties Company
- Scott A. Spoo
- A41 - WEARING APPAREL
Information Patent Grant
Respiratory mask
- Patent number D692125
- Issue date Oct 22, 2013
- 3M Innovative Properties Company
- Dean R. Duffy
- D24 - Medical and laboratory equipment
Information Patent Grant
Filtering face-piece respirator having parallel line weld pattern i...
- Patent number 8,528,560
- Issue date Sep 10, 2013
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Grant
Joined filter media pleat packs
- Patent number 8,491,689
- Issue date Jul 23, 2013
- 3M Innovative Properties Company
- Dean R. Duffy
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Self-supporting pleated filter media
- Patent number 8,419,817
- Issue date Apr 16, 2013
- 3M Innovative Properties Company
- Douglas C. Sundet
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Parallel bond lines on a fibrous filtration face mask
- Patent number D678507
- Issue date Mar 19, 2013
- 3M Innovative Properties Company
- Dean R. Duffy
- D24 - Medical and laboratory equipment
Information Patent Grant
Expandable face mask with engageable stiffening element
- Patent number 8,360,067
- Issue date Jan 29, 2013
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Bond pattern on a personal respiratory protection mask
- Patent number D667541
- Issue date Sep 18, 2012
- 3M Innovative Properties Company
- Scott A. Spoo
- D24 - Medical and laboratory equipment
Information Patent Grant
Tabs on a personal respiratory protection mask
- Patent number D659820
- Issue date May 15, 2012
- 3M Innovative Properties Company
- Nathan A. Abel
- D24 - Medical and laboratory equipment
Information Patent Grant
Triangular bond pattern on a personal respiratory protection mask
- Patent number D659821
- Issue date May 15, 2012
- 3M Innovative Properties Company
- Scott A. Spoo
- D24 - Medical and laboratory equipment
Information Patent Grant
Filter cartridge
- Patent number D652910
- Issue date Jan 24, 2012
- 3M Innovative Properties Company
- Dean R. Duffy
- D24 - Medical and laboratory equipment
Information Patent Grant
Filter cartridge having a magenta netting
- Patent number D652506
- Issue date Jan 17, 2012
- 3M Innovative Properties Company
- John S. Huberty
- D24 - Medical and laboratory equipment

Patents Applicationslast 30 patents

Information Patent Application
RESPIRATOR INCLUDING ADJUSTABLE STRAP AND METHOD OF FORMING SAME
- Publication number 20220047015
- Publication date Feb 17, 2022
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Foldable Face-Piece Respirator With Exhalation Valve
- Publication number 20210038928
- Publication date Feb 11, 2021
- 3M Innovative Properties Company
- Evgeny V. Vasiliev
- A41 - WEARING APPAREL
Information Patent Application
Respirator Including Transversely-Extending Pleat And Method Of For...
- Publication number 20200390167
- Publication date Dec 17, 2020
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Molded Respirator with Integral Nose Pads Provided by Inwardly-Fold...
- Publication number 20190090558
- Publication date Mar 28, 2019
- 3M Innovative Properties Company
- Feng Xu
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Foldable Face-Piece Respirator With Exhalation Valve
- Publication number 20180353782
- Publication date Dec 13, 2018
- 3M Innovative Properties Company
- Evgeny V. Vasiliev
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORM...
- Publication number 20180169447
- Publication date Jun 21, 2018
- 3M Innovative Properties Company
- Philip D. Eitzman
- A41 - WEARING APPAREL
Information Patent Application
Respirator Including Contrast Layer
- Publication number 20180099165
- Publication date Apr 12, 2018
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator Having Nose Cushioning Member
- Publication number 20170318876
- Publication date Nov 9, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator With Increased Friction Perimeter
- Publication number 20170014653
- Publication date Jan 19, 2017
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator Having Darted Mask Body
- Publication number 20160338428
- Publication date Nov 24, 2016
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator Having Nose Notch
- Publication number 20160287916
- Publication date Oct 6, 2016
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Respirator Including Contrast Layer
- Publication number 20160016021
- Publication date Jan 21, 2016
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator Dispenser
- Publication number 20150266655
- Publication date Sep 24, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Filtering Face-Piece Respirator With Increased Friction Perimeter
- Publication number 20150101617
- Publication date Apr 16, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTER FRAME ASSEMBLY WITH SEAL
- Publication number 20150075125
- Publication date Mar 19, 2015
- 3M Innovative Properties Company
- Francis E. Porbeni
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING NOSE CUSHIONING MEMBER
- Publication number 20150059773
- Publication date Mar 5, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR WITH STIFFENING MEMBER INTEGRAL WIT...
- Publication number 20150059771
- Publication date Mar 5, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING DARTED MASK BODY
- Publication number 20150059772
- Publication date Mar 5, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING NOSE NOTCH
- Publication number 20150059774
- Publication date Mar 5, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
Horizontal Flat-Fold Filtering Face-Piece Respirator having Indicia...
- Publication number 20150020816
- Publication date Jan 22, 2015
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING FOLDED FLANGE
- Publication number 20140182593
- Publication date Jul 3, 2014
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING STRAP-ACTIVATED FOLDED FLANGE
- Publication number 20140182599
- Publication date Jul 3, 2014
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING ROUNDED PERIMETER
- Publication number 20140182601
- Publication date Jul 3, 2014
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING WELDED INDICIA HIDDEN IN PLEAT
- Publication number 20140182600
- Publication date Jul 3, 2014
- 3M Innovative Properties Company
- Dean R. Duffy
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING SUPPORT STRUCTURE INJECTION...
- Publication number 20130340768
- Publication date Dec 26, 2013
- 3M Innovative Properties Company
- Yonas Gebrewold
- A41 - WEARING APPAREL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING AN OVERMOLDED FACE SEAL
- Publication number 20120125341
- Publication date May 24, 2012
- 3M Innovative Properties Company
- Yonas Gebrewold
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
FILTERING FACE-PIECE RESPIRATOR HAVING SUPPORT STRUCTURE INJECTION...
- Publication number 20120125342
- Publication date May 24, 2012
- 3M Innovative Properties Company
- Yonas Gebrewold
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
EXPANDABLE FACE MASK WITH ENGAGEABLE STIFFENING ELEMENT
- Publication number 20120047627
- Publication date Mar 1, 2012
- 3M Innovative Properties Company
- Dean R. Duffy
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORM...
- Publication number 20110315144
- Publication date Dec 29, 2011
- 3M Innovative Properties Company
- Philip D. Eitzman
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
SELF-SUPPORTING PLEATED FILTER MEDIA
- Publication number 20110138760
- Publication date Jun 16, 2011
- 3M Innovative Properties Company
- Douglas C. Sundet
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Dean R. Duffy

Person

Patents Grantslast 30 patents

Respirator including transversely-extending pleat and method of for...

Filtering face-piece respirator having folded flange

Filtering face-piece respirator having nose cushioning member

Respirator including contrast layer

Filtering face-piece respirator having darted mask body

Filtering face-piece respirator having strap-activated folded flange

Filtering face-piece respirator having nose notch

Filtering face-piece respirator dispenser

Respirator including contrast layer

Horizontal flat-fold filtering face-piece respirator having indicia...

Filtering face-piece respirator having nose cushioning member

Filtering face-piece respirator with stiffening member integral wit...

Filter frame assembly with seal

Filtering face-piece respirator having darted mask body

Filtering face-piece respirator having nose notch

Expandable face mask with reinforcing netting

Horizontal flat-fold filtering face-piece respirator having indicia...

Respirator having folded nose region

Flat-fold filtering face-piece respirator having structural weld pa...

Respiratory mask

Filtering face-piece respirator having parallel line weld pattern i...

Joined filter media pleat packs

Self-supporting pleated filter media

Parallel bond lines on a fibrous filtration face mask

Expandable face mask with engageable stiffening element

Bond pattern on a personal respiratory protection mask

Tabs on a personal respiratory protection mask

Triangular bond pattern on a personal respiratory protection mask

Filter cartridge

Filter cartridge having a magenta netting

Patents Applicationslast 30 patents

RESPIRATOR INCLUDING ADJUSTABLE STRAP AND METHOD OF FORMING SAME

Foldable Face-Piece Respirator With Exhalation Valve

Respirator Including Transversely-Extending Pleat And Method Of For...

Molded Respirator with Integral Nose Pads Provided by Inwardly-Fold...

Foldable Face-Piece Respirator With Exhalation Valve

RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORM...

Respirator Including Contrast Layer

Filtering Face-Piece Respirator Having Nose Cushioning Member

Filtering Face-Piece Respirator With Increased Friction Perimeter

Filtering Face-Piece Respirator Having Darted Mask Body

Filtering Face-Piece Respirator Having Nose Notch

Respirator Including Contrast Layer

Filtering Face-Piece Respirator Dispenser

Filtering Face-Piece Respirator With Increased Friction Perimeter

FILTER FRAME ASSEMBLY WITH SEAL

FILTERING FACE-PIECE RESPIRATOR HAVING NOSE CUSHIONING MEMBER

FILTERING FACE-PIECE RESPIRATOR WITH STIFFENING MEMBER INTEGRAL WIT...

FILTERING FACE-PIECE RESPIRATOR HAVING DARTED MASK BODY

FILTERING FACE-PIECE RESPIRATOR HAVING NOSE NOTCH

Horizontal Flat-Fold Filtering Face-Piece Respirator having Indicia...

FILTERING FACE-PIECE RESPIRATOR HAVING FOLDED FLANGE

FILTERING FACE-PIECE RESPIRATOR HAVING STRAP-ACTIVATED FOLDED FLANGE

FILTERING FACE-PIECE RESPIRATOR HAVING ROUNDED PERIMETER

FILTERING FACE-PIECE RESPIRATOR HAVING WELDED INDICIA HIDDEN IN PLEAT

FILTERING FACE-PIECE RESPIRATOR HAVING SUPPORT STRUCTURE INJECTION...

FILTERING FACE-PIECE RESPIRATOR HAVING AN OVERMOLDED FACE SEAL

FILTERING FACE-PIECE RESPIRATOR HAVING SUPPORT STRUCTURE INJECTION...

EXPANDABLE FACE MASK WITH ENGAGEABLE STIFFENING ELEMENT

RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORM...

SELF-SUPPORTING PLEATED FILTER MEDIA