Patents by Inventor Donald Lohner

Donald Lohner 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).

  • Low silver coating weight, high speed films having two similar emulsion layers
    Patent number: 4209329
    Abstract: The silver halide coating weight of a lithographic element can be reduced by ca. 40% by coating two layers of gelatino-silver halide emulsion on a support, and dividing a speed-adjusting polyoxyethylene compound unequally between the two layers.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: June 24, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Donald Lohner