Patents by Inventor Mathias AHRENS

Mathias AHRENS 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).

  • Particle filter as well as method for the manufacture thereof
    Patent number: 11511221
    Abstract: A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 29, 2022
    Assignee: DRÄGER SAFETY AG & CO. KGAA
    Inventors: Matthias Hoder, Stephan Hake, Mathias Ahrens, Andrea Görndt
  • PARTICLE FILTER AS WELL AS METHOD FOR THE MANUFACTURE THEREOF
    Publication number: 20200108341
    Abstract: A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Inventors: Matthias HODER, Stephan HAKE, Mathias AHRENS, Andrea GÖRNDT
  • Particle filter as well as method for the manufacture thereof
    Patent number: 10537841
    Abstract: A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: January 21, 2020
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Matthias Hoder, Stephan Hake, Mathias Ahrens, Andrea Görndt
  • PARTICLE FILTER AS WELL AS METHOD FOR THE MANUFACTURE THEREOF
    Publication number: 20170120177
    Abstract: A method for manufacturing a filter (1) for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element (2) is separated from the pleated preform (6) and is inserted into a housing (3). The inserted filter element (2) is connected to the housing (3) at least at some points. This filter elements (2) may have a polygonal outer contour, upon separating the element from the pleated filter preform (6). A foam and/or an adhesive is applied to an outer edge of the filter element (2), arranged on the circumference of the filter element, for an at least partial sealing of an edge (5). This establishes a connection to the housing (3) in at least some sections.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Inventors: Matthias HODER, Stephan HAKE, Mathias AHRENS, Andrea GÖRNDT