Patents by Inventor Philip Shadbolt

Philip Shadbolt 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: 4542052
    Abstract: Imageable products are described which can be made into dry transfer materials and other transfer materials by imaging them in an electrophotographic copier. The imageable products include an adhesive layer having a coating weight of between about 0.5 and 7 grams per square meter, releasably adhered to a substrate. A non-adhesive layer is applied over the adhesive layer, the non-adhesive layer having a thickness of less than about 30 microns and the non-adhesive layer being capable of accepting electrophotographic toner. The non-adhesive layer is incapable of being stripped from the substrate, to which said non-adhesive layer is releasably adhered by said adhesive layer, from a corner of said non-adhesive layer without fracture.
    Type: Grant
    Filed: May 17, 1983
    Date of Patent: September 17, 1985
    Assignee: Esselte Pendaflex Corporation
    Inventors: Philip Shadbolt, Graham E. Cassey
  • Patent number: 4177309
    Abstract: Dry transfer materials, e.g. dry transfer lettering sheets, are made from a transparent or translucent carrier sheet indicia thereon (e.g. in printing ink or produced photographically) and a layer of adhesive over the indicia and on the carrier sheet in the areas between the indicia. By incorporating a suitable amount of a detackifying polar wax in the adhesive, when the adhesive is deposited from a solution and/or dispersion in an organic solvent, the adhesive dries down to be stickier over the indicia than in the areas where it is directly on the carrier sheet.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: December 4, 1979
    Assignee: Letraset USA Inc.
    Inventors: Philip Shadbolt, Helen Ganszczyk