Patents by Inventor Kurt Halfar

Kurt Halfar 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).

  • Radiation sensitive recording material
    Patent number: 3942996
    Abstract: A radiation sensitive recording material contains a layer of a layer-forming substance and incorporated therein an organic halogen compound capable of producing hydrogenhalide when struck by high energy radiation, and a chromogenic arylvinyl pyran or arylvinylthio pyran which changes its color by reaction with hydrolide. The material provides records with high stability.
    Type: Grant
    Filed: December 26, 1973
    Date of Patent: March 9, 1976
    Assignee: AGFA-Gevaert Aktiengesellschaft
    Inventors: Gunther Arnold, Gabor Paal, Alfred Wilhelm, Kurt Halfar, Hans Peter Vollmer