William A. Mittelstadt

Person

Woodbury, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Respirator negative pressure fit check devices and methods
- Patent number 12,128,259
- Issue date Oct 29, 2024
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Headwear suspension attachment element
- Patent number 11,992,078
- Issue date May 28, 2024
- 3M Innovative Properties Company
- David M. Castiglione
- A42 - HEADWEAR
Information Patent Grant
Respirator fit check sealing devices and methods
- Patent number 11,865,375
- Issue date Jan 9, 2024
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Respirator having noncircular centroid-mounted exhalation valve
- Patent number 11,305,134
- Issue date Apr 19, 2022
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Respirator fit check sealing devices and methods
- Patent number 11,219,787
- Issue date Jan 11, 2022
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Respirator negative pressure fit check devices and methods
- Patent number 11,052,268
- Issue date Jul 6, 2021
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Sleeve-fit respirator cartridge
- Patent number 10,391,338
- Issue date Aug 27, 2019
- 3M Innovative Properties Company
- David M. Blomberg
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Respirator having noncircular centroid-mounted exhalation valve
- Patent number 10,143,864
- Issue date Dec 4, 2018
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Respirator negative pressure fit check devices and methods
- Patent number 9,950,202
- Issue date Apr 24, 2018
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Respiratory mask having a nose support extension
- Patent number 9,776,023
- Issue date Oct 3, 2017
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Respirator with face seal flexing region
- Patent number D787659
- Issue date May 23, 2017
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator mask having a face seal flexing region
- Patent number D787660
- Issue date May 23, 2017
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Filter element having a connector
- Patent number D779674
- Issue date Feb 21, 2017
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator with face seal multiple flexing region
- Patent number D776258
- Issue date Jan 10, 2017
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Respiratory mask having a clean air inlet chamber
- Patent number 9,517,367
- Issue date Dec 13, 2016
- 3M Innovative Properties Company
- Gary E. Dwyer
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Sleeve-fit respirator cartridge
- Patent number 9,510,626
- Issue date Dec 6, 2016
- 3M Innovative Properties Company
- David M. Blomberg
- A41 - WEARING APPAREL
Information Patent Grant
Respirator mask having an exhalation port
- Patent number D767116
- Issue date Sep 20, 2016
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator mask exhalation port
- Patent number D759807
- Issue date Jun 21, 2016
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Personal protective equipment strap retaining devices
- Patent number 9,259,058
- Issue date Feb 16, 2016
- 3M Innovative Properties Company
- Thomas J. Brace
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Personal protective equipment strap retaining devices
- Patent number 9,247,788
- Issue date Feb 2, 2016
- 3M Innovative Properties Company
- Thomas J. Brace
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Respirator mask having a circular button
- Patent number D744088
- Issue date Nov 24, 2015
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator mask having a circular button
- Patent number D743536
- Issue date Nov 17, 2015
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator mask
- Patent number D742504
- Issue date Nov 3, 2015
- 3M Innovative Properties Company
- David M. Blomberg
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator with raised face seal flexing region
- Patent number D740932
- Issue date Oct 13, 2015
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Respiratory protection device harness assembly
- Patent number 9,149,669
- Issue date Oct 6, 2015
- 3M Innovative Properties Company
- Michael J. Cowell
- A41 - WEARING APPAREL
Information Patent Grant
Respirator harness having collapsible head cradle
- Patent number 8,839,785
- Issue date Sep 23, 2014
- 3M Innovative Properties Company
- David M. Castiglione
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
RFID tag with a modified dipole antenna
- Patent number 8,717,244
- Issue date May 6, 2014
- 3M Innovative Properties Company
- Terrence H. Joyce
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Respirator support structure
- Patent number D690415
- Issue date Sep 24, 2013
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator mask body
- Patent number D652507
- Issue date Jan 17, 2012
- 3M Innovative Properties Company
- William A. Mittelstadt
- D24 - Medical and laboratory equipment
Information Patent Grant
Respirator valve
- Patent number 7,849,856
- Issue date Dec 14, 2010
- 3M Innovative Properties Company
- William A. Mittelstadt
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
RESPIRATOR FIT CHECK SEALING DEVICES AND METHODS
- Publication number 20240091573
- Publication date Mar 21, 2024
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATOR FIT CHECK SEALING DEVICES AND METHODS
- Publication number 20220088422
- Publication date Mar 24, 2022
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS
- Publication number 20210290992
- Publication date Sep 23, 2021
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Respirator Fit Check Sealing Devices And Methods
- Publication number 20200316414
- Publication date Oct 8, 2020
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Respirator Having Noncircular Centroid-Mounted Exhalation Valve
- Publication number 20190070440
- Publication date Mar 7, 2019
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Sleeve-Fit Respirator Cartridge
- Publication number 20170072232
- Publication date Mar 16, 2017
- 3M Innovative Properties Company
- David A. Blomberg
- A41 - WEARING APPAREL
Information Patent Application
Respirator Having Noncircular Centroid-Mounted Exhalation Valve
- Publication number 20150136141
- Publication date May 21, 2015
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
RESPIRATORY MASK HAVING A NOSE SUPPORT EXTENSION
- Publication number 20150083137
- Publication date Mar 26, 2015
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS
- Publication number 20140251327
- Publication date Sep 11, 2014
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATORY PROTECTION DEVICE HARNESS ASSEMBLY
- Publication number 20140216463
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- Michael J. Cowell
- A41 - WEARING APPAREL
Information Patent Application
PERSONAL PROTECTIVE EQUIPMENT STRAP RETAINING DEVICES
- Publication number 20140216476
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- Thomas J. Brace
- A41 - WEARING APPAREL
Information Patent Application
PERSONAL PROTECTIVE EQUIPMENT STRAP RETAINING DEVICES
- Publication number 20140216472
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- Thomas J. Brace
- A41 - WEARING APPAREL
Information Patent Application
RESPIRATORY MASK HAVING A CLEAN AIR INLET CHAMBER
- Publication number 20140216473
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- Gary E. Dwyer
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS
- Publication number 20140216474
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
SLEEVE-FIT RESPIRATOR CARTRIDGE
- Publication number 20140216475
- Publication date Aug 7, 2014
- 3M Innovative Properties Company
- David M. Blomberg
- A41 - WEARING APPAREL
Information Patent Application
RESPIRATOR HARNESS HAVING COLLAPSIBLE HEAD CRADLE
- Publication number 20110220115
- Publication date Sep 15, 2011
- 3M Innovative Properties Company
- David M. Castiglione
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
RFID TAG WITH A MODIFIED DIPOLE ANTENNA
- Publication number 20090096696
- Publication date Apr 16, 2009
- Terrence H. Joyce, JR.
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Respiratory protection device that has rapid threaded clean air sou...
- Publication number 20060090754
- Publication date May 4, 2006
- 3M Innovative Properties Company
- William A. Mittelstadt
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Unidirectional respirator valve
- Publication number 20050139216
- Publication date Jun 30, 2005
- 3M Innovative Properties Company
- William A. Mittelstadt
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Respirator valve
- Publication number 20020195108
- Publication date Dec 26, 2002
- 3M Innovative Properties Company
- William A. Mittelstadt
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Respirator valve
- Publication number 20020195109
- Publication date Dec 26, 2002
- 3M Innovative Properties Company
- William A. Mittelstadt
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

William A. Mittelstadt

Person

Patents Grantslast 30 patents

Respirator negative pressure fit check devices and methods

Headwear suspension attachment element

Respirator fit check sealing devices and methods

Respirator having noncircular centroid-mounted exhalation valve

Respirator fit check sealing devices and methods

Respirator negative pressure fit check devices and methods

Sleeve-fit respirator cartridge

Respirator having noncircular centroid-mounted exhalation valve

Respirator negative pressure fit check devices and methods

Respiratory mask having a nose support extension

Respirator with face seal flexing region

Respirator mask having a face seal flexing region

Filter element having a connector

Respirator with face seal multiple flexing region

Respiratory mask having a clean air inlet chamber

Sleeve-fit respirator cartridge

Respirator mask having an exhalation port

Respirator mask exhalation port

Personal protective equipment strap retaining devices

Personal protective equipment strap retaining devices

Respirator mask having a circular button

Respirator mask having a circular button

Respirator mask

Respirator with raised face seal flexing region

Respiratory protection device harness assembly

Respirator harness having collapsible head cradle

RFID tag with a modified dipole antenna

Respirator support structure

Respirator mask body

Respirator valve

Patents Applicationslast 30 patents

RESPIRATOR FIT CHECK SEALING DEVICES AND METHODS

RESPIRATOR FIT CHECK SEALING DEVICES AND METHODS

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS

Respirator Fit Check Sealing Devices And Methods

Respirator Having Noncircular Centroid-Mounted Exhalation Valve

Sleeve-Fit Respirator Cartridge

Respirator Having Noncircular Centroid-Mounted Exhalation Valve

RESPIRATORY MASK HAVING A NOSE SUPPORT EXTENSION

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS

RESPIRATORY PROTECTION DEVICE HARNESS ASSEMBLY

PERSONAL PROTECTIVE EQUIPMENT STRAP RETAINING DEVICES

PERSONAL PROTECTIVE EQUIPMENT STRAP RETAINING DEVICES

RESPIRATORY MASK HAVING A CLEAN AIR INLET CHAMBER

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS

SLEEVE-FIT RESPIRATOR CARTRIDGE

RESPIRATOR HARNESS HAVING COLLAPSIBLE HEAD CRADLE

RFID TAG WITH A MODIFIED DIPOLE ANTENNA

Respiratory protection device that has rapid threaded clean air sou...

Unidirectional respirator valve

Respirator valve

Respirator valve