Patents by Inventor Raymond L. Florens

Raymond L. Florens 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).

  • Process for the production of multiple radiographic images
    Patent number: 4893021
    Abstract: A process for the production of multiple radiographic images in which a corresponding number of photosensitive layers is exposed in a single shot to penetrating radiation and to photons emitted by fluorescent material sensitive to such penetrating radiation, characterized in that during such exposure each said photosensitive layer is located between a layer of said fluorescent material and a visible light reflecting layer which comprises white pigment particles and has a diffuse white light reflection density of less than 0.30.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: January 9, 1990
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Romain H. Bollen, Raymond L. Florens
  • Silver halide elements with polymers containing ketoiminoguanidinium groups
    Patent number: 4186010
    Abstract: A photographic element is described comprising an emulsion layer of low gelatin to silver halide ratio, the emulsion comprising a polymeric compound containing recurring units with ketoiminoguanidinium groups in the side chain to reduce formation of pressure marks.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: January 29, 1980
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Raymond L. Florens, Daniel M. Timmerman
  • Direct-positive silver halide emulsions
    Patent number: 4073652
    Abstract: A method is described of increasing the stability of direct-positive silver halide emulsions comprising reduction- and gold-fogged silver halide grains by the step of adding to the emulsion subsequent to the fogging, a sulphite and a gold compound.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: February 14, 1978
    Assignee: AGFA-GEVAERT N.V.
    Inventor: Raymond L. Florens