Patents by Inventor Wolfhard Rutz

Wolfhard Rutz 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: 5891562
    Abstract: Described is a multi-layer, flexible transfer tape with a backing and an adhesive layer, wherein between the backing and adhesive layer a bonding agent-containing transfer layer is provided, which adheres more strongly to the adhesive layer than to the backing. With this a) the bonding agent-containing transfer layer and/or b) the adhesive layer contains fine hollow particles and a water-soluble, solid alcohol. Furthermore the invention relates to a suitable process for producing such a transfer tape as well as to special application possibilities of same, in particular in rolled-up form in a hand apparatus. In particular, when used it leads to a transferred layer in which fractures, in particular micro-cracks, are excluded, and in an improvement of the initial adhesion when the transfer tape is used again after it has been stored for a long time.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: April 6, 1999
    Assignee: Pritt Produktionsgesellschaft mbH
    Inventors: Wolfhard Rutz, Wolfgang Giersemehl, Wolfgang Bauersachs, Karl-Heinz Weissmann, Lothar Titze
  • Patent number: 5135798
    Abstract: A multilayer, flexible transfer strip with an auxiliary carrier and a contact adhesive coating, whereby between the auxiliary carrier and the contact adhesive coating is provided a binder-containing transfer coating, which has a stronger adhesion to the contact adhesive coating than to the auxiliary carrier. The binder-containing transfer coating contains a tear-off aid in the form of a soluble cellulose derivative. On incorporating white pigments into the transfer coating, the transfer strip can be used for correcting written representations or typed characters. Correction takes place rapidly and simply and leads to the formation of a uniform coating with a sharp tear-off.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: August 4, 1992
    Assignee: Pelikan Aktiengesellschaft
    Inventors: Sigo Muschter, Ernst Kunkel, Petra Bubolz, Wolfhard Rutz
  • Patent number: 4891260
    Abstract: A transfer ribbon for applying a film of a cover material to a substrate, especially a paper substrate provided with markings to be covered or to be provided with a stripe of color from a coloring agent contained in the cover material, has a carrier-foil strip to which a cover layer is applied and an adhesive layer applied to that cover layer. The adhesion between the cover layer and the foil is less than the adhesion between the cover layer and the adhesive layer so that when the adhesive side of the ribbon is pressed against the substrate, the foil can be withdrawn to leave the cover layer, containing the coloring agent, thereon.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: January 2, 1990
    Assignee: Pelikan Aktiengesellschaft
    Inventors: Ernst Kunkel, Petra Bubolz, Wolfhard Rutz, Sigo Muschter
  • Patent number: 4871620
    Abstract: The present invention relates to a typewriter ribbon made up of a flexible thin support and a transferable mass placed on the flexible thin support. The transferable mass comprises a surface-active dispersing agent and a surface-active resin dissolved in a medium-boiling solvent.This ribbon is useful for correctable typing on delicate or treated paper, e.g., photocopied paper.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: October 3, 1989
    Assignee: Pelikan Aktiengesellschaft
    Inventors: Ernst Kunkel, Wolfhard Rutz