Patents by Inventor Rajendra J. Shah

Rajendra J. Shah 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).

  • Nucleating agents for graphic arts films
    Patent number: 5939233
    Abstract: Nucleating agents that promote high contrast in photographic films are disclosed. The nucleating agents are aryl sulfonamido hydrazides having pyridinium, phosphonium or cycloalkenylpyridinium functional groups. The nucleating agents increase the speed and contrast of graphic arts films and improve dot quality in halftone applications. Boosters are not required to obtain good dot quality and photographic speed.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: August 17, 1999
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Syeda Husain, John F. Pilot, Rajendra J. Shah