Patents by Inventor Susan Marie Fischer

Susan Marie Fischer 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 dye-forming coupler, emulsion layer, element, and process
    Patent number: 5698386
    Abstract: The invention provides a photographic light sensitive silver halide emulsion layer having associated therewith a pyrazolotriazole dye-forming coupler having the formula: ##STR1## wherein: R.sub.1 is a substituent bonded to the pyrazolotriazole nucleus by a fully substituted carbon atom;X is hydrogen or a coupling-off group;R.sub.2, R.sub.3, R.sub.4, and R.sub.6 are independently hydrogen or substituent groups;R.sub.5 is selected from the group consisting of alkyl, alkoxy, aryl, and aryloxy groups;R.sub.7 is an alkyl group; andY is a substituent group where m is 0 to 4.The invention also provides a coupler compound, a photographic element containing the emulsion layer of the invention, and an imaging process.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Ping Wah Tang, David Joseph Decker, Susan Marie Fischer, Stanley Wray Cowan
  • Process for preparing a acylhyrazino pyrazole derivative
    Patent number: 5688964
    Abstract: A process for making a compound of formula III ##STR1## wherein R.sub.6 is a group bonded to the rest of the molecule by a carbon atom;R.sub.3 is a group containing a carbon atom and bonded to the rest of the molecule by a carbon atom or by a heteroatom; andX is hydrogen or a substituent, comprising:reacting with hydrazine a compound of formula II ##STR2## or a dehydrated analog of formula II, wherein R.sub.3, R.sub.6, and X have the same meaning as for formula III, and Y is a nucleofugal leaving group.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: November 18, 1997
    Assignee: Eastman Kodak Company
    Inventors: Robert Fogg Romanet, Susan Marie Fischer