Patents by Inventor Ewald Klein

Ewald Klein 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).

  • X-ray electrophotographic recording material and method of manufacturing same
    Patent number: 4121933
    Abstract: The sensitivity of photoconductive layers of tetragonal lead monoxide in a binder is increased when the tetragonal lead monoxide produced by prior art process after being subjected to a further treatment has a grain size of 1 to 50 .mu.m and is dispersed in the binder without mechanical force and is sedimented on a layer carrier without mechanical force.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: October 24, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Horst Dannert, Hans-Jurgen Hirsch, Ewald Klein, Karl-Heinz Panstruga