Patents by Inventor Howard G. Schild

Howard G. Schild 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).

  • Holographic medium and process for use thereof
    Patent number: 5759721
    Abstract: A holographic recording medium comprises an acid generator capable of producing an acid upon exposure to actinic radiation; a binder; and at least one monomer or oligomer capable of undergoing cationic polymerization initiated by the acid produced from the acid generator. This recording medium is not subject to the disadvantages (for example, oxygen sensitivity) associated with radical-polymerized prior art holographic recording media.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: June 2, 1998
    Assignee: Polaroid Corporation
    Inventors: Pradeep K. Dhal, Michael G. Horner, Richard T. Ingwall, Eric S. Kolb, Parag G. Mehta, Richard A. Minns, Howard G. Schild, David A. Waldman
  • Protected image, and process for the production thereof
    Patent number: 5560979
    Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: October 1, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Agota F. Fehervari, Russell A. Gaudiana, Richard A. Minns, Howard G. Schild
  • Process for protecting a binary image with a siloxane durable layer that is not removable by hexane, isopropanol or water
    Patent number: 5501940
    Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: March 26, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Agota F. Fehervari, Russell A. Gaudiana, Richard A. Minns, Howard G. Schild
  • Sheet material for thermal transfer imaging
    Patent number: 5334573
    Abstract: Sheet materials for use in thermal transfer imaging systems comprising a donor sheet and a receiving sheet are provided wherein the donor sheet and the receiving sheet do not stick to each other during thermal processing.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: August 2, 1994
    Assignee: Polaroid Corporation
    Inventor: Howard G. Schild