Patents by Inventor Carl-Johan Danestad

Carl-Johan Danestad 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).

  • Method of applying a protective layer on a surface to be subjected to etching
    Patent number: 4672019
    Abstract: Particularly in the case of moulding tools for plastic products, it is desirable for these to be provided with a surface pattern which is transferred to the product. The pattern is produced by means of etching. The pattern is transferred phototechnically and the invention constitutes an improved method of performing this transfer. With the aid of an exposed screen fabric the pattern is transferred to a foil which, after coating, is provided with an adhesive layer. The coating is applied on the surface to be etched, after which the foil is removed and etching can be initiated.
    Type: Grant
    Filed: January 8, 1986
    Date of Patent: June 9, 1987
    Assignee: Svensk Industrigravyr AB
    Inventor: Carl-Johan Danestad