Thomas B. Stenvall

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Sundborn, SE

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Patents Grantslast 30 patents

Information Patent Grant
Automatic darkening filter assembly for a welding protector and a w...
- Patent number 11,376,162
- Issue date Jul 5, 2022
- 3M Innovative Properties Company
- Johan M. P. Hansson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Welding helmet
- Patent number 11,324,275
- Issue date May 10, 2022
- 3M Innovative Properties Company
- Martin Berggren
- A42 - HEADWEAR
Information Patent Grant
Automatic darkening filter assembly for a welding protector and a w...
- Patent number 10,952,902
- Issue date Mar 23, 2021
- 3M Innovative Properties Company
- Johan M. P. Hansson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
AUTOMATIC DARKENING FILTER ASSEMBLY FOR A WELDING PROTECTOR AND A W...
- Publication number 20210205136
- Publication date Jul 8, 2021
- 3M Innovative Properties Company
- Johan M. P. Hansson
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
WELDING HELMET
- Publication number 20200297060
- Publication date Sep 24, 2020
- 3M Innovative Properties Company
- Martin Berggren
- A42 - HEADWEAR
Information Patent Application
A WELDING HELMET WITH A DETACHABLE WELDING VISOR
- Publication number 20200289323
- Publication date Sep 17, 2020
- 3M Innovative Properties Company
- Björn Daniels
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
An Automatic Darkening Filter Assembly for a Welding Protector and...
- Publication number 20190262178
- Publication date Aug 29, 2019
- 3M Innovative Properties Company
- Johan M. P. Hansson
- G02 - OPTICS