Patents by Inventor Jan U. E. Jonsson

Jan U. E. Jonsson 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).

  • Spacer means for providing air gaps
    Patent number: 4446661
    Abstract: The invention relates to a sheet formed as a spacer means for creating air gaps, e.g. between roofing insulation and a roof. The sheet (1) is corrugated and is resiliently compressible transverse to the longitudinal direction of the corrugations (7,8).
    Type: Grant
    Filed: October 7, 1980
    Date of Patent: May 8, 1984
    Inventors: Jan U. E. Jonsson, Rolf B. J. R. Blomgren, Nils H. Edlund