Patents by Inventor Harald Thiis Evensen

Harald Thiis Evensen 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).

  • Procedure for covering roofs
    Patent number: 4282050
    Abstract: The invention discloses a process of cladding a roof on a support structure which includes the step of applying an insulation layer on said support structure, applying edge abutting webs of cladding material over the insulation layer, simultaneously mechanically anchoring by fasteners the insulation and cladding webs to the support structure and sealing over the edges of the webs and fasteners by welding on welding strips covering said edges and fasteners.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: August 4, 1981
    Assignee: Isola Fabrikker A/S
    Inventor: Harald Thiis-Evensen
  • Inorganic raw felt intended for the production of roof felt
    Patent number: 4097644
    Abstract: An improved raw felt material having a high degree of strength and flexibility and increased bulk. The raw felt is used in producing an asphalt roofing cover. The felt is formed from an adhesively bonded porous non-woven sheet of an inorganic fibrous material and has finally divided vulcanized rubber particles distributed within the fibrous material.
    Type: Grant
    Filed: August 5, 1975
    Date of Patent: June 27, 1978
    Assignee: Isola Fabrikker A/S
    Inventors: Harald Thiis Evensen, Ola Tellesbo