Patents by Inventor Heinz-Otto Merz

Heinz-Otto Merz 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).

  • Waterproof photographic paper support
    Patent number: 4820582
    Abstract: A waterproof, polyolefin coated paper support for photographic coatings is disclosed, wherein the paper base contains an alkylketene dimer as a hydrophobizing sizing agent. The alkylketene dimer consists to the greater part of behenyl ketene and contains no more than 40% residues originating from alkylketenes having chains shorter than C.sub.20 -alkyl.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: April 11, 1989
    Assignee: Felix Schoeller, Jr. GmbH & Co. KG
    Inventors: Heinz-Otto Merz, Alois-Bernhard Kerkhoff, Wolfgang Storbeck