Patents by Inventor Marcus Wiederkehr

Marcus Wiederkehr has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control of an automatic darkening filter
    Patent number: 8047664
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 1, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Bengt Garbergs, Marcus Wiederkehr
  • CONTROL OF AN AUTOMATIC DARKENING FILTER
    Publication number: 20100328752
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Application
    Filed: September 7, 2010
    Publication date: December 30, 2010
    Inventors: Bengt Garbergs, Marcus Wiederkehr
  • Control of an automatic darkening filter
    Patent number: 7810937
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: October 12, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Bengt Garbergs, Marcus Wiederkehr
  • Control of an automatic darkening filter
    Patent number: 7637622
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: December 29, 2009
    Assignee: 3M Innovative Properties Company
    Inventors: Bengt Garbergs, Marcus Wiederkehr
  • CONTROL OF AN AUTOMATIC DARKENING FILTER
    Publication number: 20090300810
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Application
    Filed: August 13, 2009
    Publication date: December 10, 2009
    Inventors: Bengt Garbergs, Marcus Wiederkehr
  • Control of an automatic darkening filter
    Publication number: 20070081250
    Abstract: A protective automatic darkening filter (ADF) and an associated tool, such as a welding torch, are controlled by a corresponding communication unit. The invention helps to ensure that the tool is not activated before the ADF has reached its dark state. A communication channel between the communication unit and the ADF may be established using a wired or wireless medium.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 12, 2007
    Inventors: Bengt Garbergs, Marcus Wiederkehr