Patents by Inventor Stig Kirchhoff

Stig Kirchhoff 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).

  • Support structure for a frame formwork panel
    Patent number: 11519186
    Abstract: A support structure for a frame formwork panel including a support structure and a formwork skin connected to the support structure, the support structure having two longitudinal edge girders and two transverse edge girders, wherein a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions of the support structure where a longitudinal edge girder and a transverse edge girder come together.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: December 6, 2022
    Assignee: PERI SE
    Inventors: Wilfried Haeberle, Alexander Hieber, Stig Kirchhoff
  • SUPPORT STRUCTURE FOR A FRAME FORMWORK PANEL
    Publication number: 20200332538
    Abstract: A support structure for a frame formwork panel including a support structure and a formwork skin connected to the support structure, the support structure having two longitudinal edge girders and two transverse edge girders, wherein a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions of the support structure where a longitudinal edge girder and a transverse edge girder come together.
    Type: Application
    Filed: March 23, 2020
    Publication date: October 22, 2020
    Inventors: Wilfried Haeberle, Alexander Hieber, Stig Kirchhoff