Patents by Inventor Frank Grieser

Frank Grieser 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).

  • Method for calibrating moisture content measuring instruments
    Patent number: 3954002
    Abstract: Moisture testing instruments for use in heaped, loose material include a neutron source and a detector. The instrument is calibrated by duplicating the test volume as calibrating container and by radiometrically as well as gravimetrically detecting the moisture content, which is varied either by evaporation while the moisture is spread or by adding determined quantities of water.
    Type: Grant
    Filed: March 29, 1973
    Date of Patent: May 4, 1976
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Frank Grieser, Rainer Klein
  • Electrical apparatus for vaporizing insecticide tablets
    Patent number: D294852
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: March 22, 1988
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Peter Schroeder, Franz P. Hennemann, Frank Grieser, Klaus Tranelis