Patents by Inventor Emil Wolfrum

Emil Wolfrum 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).

  • Patent number: 4546011
    Abstract: A web of crepe paper, thin plastic foil or like material convoluted into a roll has an outer side which is provided with a continuous coat of adhesive. Transversely extending, uniformly spaced weakened portion in the form of perforations or slits are formed in the web, and layers of a material which does not adhere to the adhesive are applied to the web. Such layers are applied to the inner side of the web so that they flank the weakened portions and allow for rapid engagement of the leader of the web by two fingers when the user wishes to remove one or more sections or panels between neighboring weakened portions. The roll can be used for the cleaning of garments or for analogous purposes and can be made in an apparatus wherein the application of layers of non-adherent material precedes or follows the making of weakened portions.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: October 8, 1985
    Assignee: Gebrauchs Gerate GmbH
    Inventor: Emil Wolfrum
  • Patent number: 4427726
    Abstract: A roll of convoluted crepe paper, thin plastic foil or like web material has an outer side which is provided with a continuous coat of adhesive, transversely extending uniformly spaced weakened portions in the form of perforations or slits, and layers of a material which does not adhere to the adhesive. Such layers are applied to the inner side of the web so that they flank the weakened portions and allow for rapid engagement of the leader of the web by two fingers when the user wishes to remove one or more sections or panels between neighboring weakened portions. The roll can be used for the cleaning of garments or for analogous purposes. The length of each layer, as considered in the longitudinal direction of the web, is a small fraction, preferably less than one-third, of the distance between two neighboring weakened portions.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: January 24, 1984
    Assignee: Gebrauchs Gerate GmbH
    Inventor: Emil Wolfrum