Patents by Inventor Tania Zuberi

Tania Zuberi 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).

  • PHOTOGRAPHIC ELEMENT CONTAINING A SPEED-ENHANCING COMPOUND
    Publication number: 20080248433
    Abstract: The invention provides a colour photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colourless imidazole compound of formula (I) that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.
    Type: Application
    Filed: October 1, 2004
    Publication date: October 9, 2008
    Inventors: Bernard A. Clark, Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich
  • Photographic element with speed-enhancing compound
    Patent number: 7354701
    Abstract: The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: April 8, 2008
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Philip A. Allway, Tania Zuberi, Stephen P. Singer, Charles E. Heckler, Louis E. Friedrich
  • Photographic element with speed-enhancing compound
    Publication number: 20070128560
    Abstract: The invention provides a color photographic element comprising at least one light-sensitive silver halide emulsion layer or a non silver-containing light-insensitive layer, in which at least one of these layers contains a colorless heterocyclic compound having either one or two hetero atoms in the ring or ring system, being other than an imidazole compound, that undergoes less than 10% chemical or redox reaction directly with oxidized developer and which has a partition coefficient to enable the photographic speed of the element to be increased by at least 0.03 stop without increasing granularity, compared to the same element without the compound. The heterocyclic compounds increase speed without a concomitant increase in size of the light-sensitive silver halide grains.
    Type: Application
    Filed: October 1, 2004
    Publication date: June 7, 2007
    Inventors: Bernard Clark, Philip Allway, Tania Zuberi, Stephen Singer, Charles Heckler, Louis Friedrich