Patents by Inventor David F. Mahar

David F. Mahar 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).

  • Sonic micro reaction zones in silver halide emulsion precipitation process
    Patent number: 5466570
    Abstract: The present invention is a method for producing a silver halide emulsion. The precipitation of the emulsion is carried out away from the rotary agitator. The reactant solutions are introduced into the reactor very close to the tip of one or more ultrasonic horns that are placed away from the agitator. The ultrasonic horns are efficient sources for controlling micromixing, while the agitator controls the macromixing in the reactor.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: November 14, 1995
    Assignee: Eastman Kodak Company
    Inventors: Seshadri Jagannathan, David F. Mahar, Rajendrakumar V. Mehta