David R. Stein

Person

White Bear Lake, 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
Dynamically determining safety equipment for dynamically changing e...
- Patent number 11,933,453
- Issue date Mar 19, 2024
- 3M Innovative Properties Company
- Brian J. Swift
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fit-test method for respirator with sensing system
- Patent number 11,534,632
- Issue date Dec 27, 2022
- 3M Innovative Properties Company
- Andrew S. Viner
- G06 - COMPUTING CALCULATING COUNTING
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
Personal protective device strap connecting buckle assembly
- Patent number 10,765,176
- Issue date Sep 8, 2020
- 3M Innovative Properties Company
- David M. Castiglione
- A44 - HABERDASHERY JEWELLERY
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
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

Patents Applicationslast 30 patents

Information Patent Application
NEGATIVE PRESSURE REUSABLE RESPIRATOR SYSTEM FOR SAFETY EVENT DETEC...
- Publication number 20220054869
- Publication date Feb 24, 2022
- 3M Innovative Properties Company
- David R. Stein
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
SYSTEMS AND METHODS FOR AUTOMATED RESPIRATOR
- Publication number 20220040507
- Publication date Feb 10, 2022
- 3M Innovative Properties Company
- Andrew W. Long
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
DYNAMICALLY DETERMINING SAFETY EQUIPMENT FOR DYNAMICALLY CHANGING E...
- Publication number 20210372561
- Publication date Dec 2, 2021
- 3M Innovative Properties Company
- Brian J. Swift
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
AUTOMATIC PERSONAL PROTECTIVE EQUIPMENT CONSTRAINT MANAGEMENT SYSTEM
- Publication number 20210350312
- Publication date Nov 11, 2021
- 3M Innovative Properties Company
- Brian J. Swift
- G06 - COMPUTING CALCULATING COUNTING
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
PERSONAL PROTECTIVE EQUIPMENT SAFETY SYSTEM USING CONTEXTUAL INFORM...
- Publication number 20210210202
- Publication date Jul 8, 2021
- 3M Innovative Properties Company
- Steven T. Awiszus
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Fit-Test Method For Respirator With Sensing System
- Publication number 20200230444
- Publication date Jul 23, 2020
- 3M Innovative Properties Company
- Andrew S. Viner
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Personal Protective Device Strap Connecting Buckle Assembly
- Publication number 20170065036
- Publication date Mar 9, 2017
- 3M Innovative Properties Company
- David M. Castiglione
- A41 - WEARING APPAREL
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
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

David R. Stein

Person

Patents Grantslast 30 patents

Respirator negative pressure fit check devices and methods

Dynamically determining safety equipment for dynamically changing e...

Fit-test method for respirator with sensing system

Respirator negative pressure fit check devices and methods

Personal protective device strap connecting buckle assembly

Respirator negative pressure fit check devices and methods

Respirator mask having a face seal flexing region

Patents Applicationslast 30 patents

NEGATIVE PRESSURE REUSABLE RESPIRATOR SYSTEM FOR SAFETY EVENT DETEC...

SYSTEMS AND METHODS FOR AUTOMATED RESPIRATOR

DYNAMICALLY DETERMINING SAFETY EQUIPMENT FOR DYNAMICALLY CHANGING E...

AUTOMATIC PERSONAL PROTECTIVE EQUIPMENT CONSTRAINT MANAGEMENT SYSTEM

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS

PERSONAL PROTECTIVE EQUIPMENT SAFETY SYSTEM USING CONTEXTUAL INFORM...

Fit-Test Method For Respirator With Sensing System

Personal Protective Device Strap Connecting Buckle Assembly

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS

RESPIRATOR NEGATIVE PRESSURE FIT CHECK DEVICES AND METHODS