Patents by Inventor Jane S. Boff

Jane S. Boff 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).

  • Patent number: 6190848
    Abstract: The invention provides a color photographic element comprising: a) a first light sensitive silver halide emulsion layer containing a compound of Formula I: wherein Q represents the atoms necessary to form a triazole ring and the associated bonds, provided that the ring members may be substituted and that two of such members may join to form a fused ring; provided further that the ClogP for the compound of Formula I is from 4.75 to 9.0; and b) a second light sensitive silver halide emulsion layer, having a spectral sensitivity different from that of the first light sensitive silver halide emulsion layer, containing a compound of Formula II: COUP-(TIME)j-INH  II wherein: 1) COUP is a coupler parent group capable of forming a dye upon reaction with an oxidized developer; 2) TIME is a timing group and j is 0 or 1; and 3) INH is a mild silver development inhibitor fragment. The invention provides improved color reproduction.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Jane S. Boff, Bernard A. Clark, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6140029
    Abstract: The invention provides a silver halide photographic element comprising a non-light sensitive layer containing elemental silver and a nitrogen heterocycle compound having a ClogP of at least 4.5, which compound comprises a ring system of one or more fused rings containing at least one --N--H bond, the ring system comprising a total of at least three nitrogen ring members and the associated bonds; provided that the compound does not contain an --SH group or >C.dbd.S group and does not react with an oxidized developer.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 31, 2000
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Jane S. Boff, Philip A. Allway, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6054257
    Abstract: A photographic element is disclosed comprising:a) a first light sensitive silver halide emulsion layer containing a compound of Formula I:COUP.sub.1 --(L).sub.n --A Iwherein1) COUP.sub.1 is a coupler parent group capable of forming a dye upon reaction with oxidized developer wherein --(L).sub.n --A is not attached to the coupling position;2) L is a divalent linking group bonding A to COUP.sub.1, and n is 0 or 1; and3) A is a fragment containing a group is identified by formulas IIIa. IIIb or IIIc: ##STR1## wherein: Het represents a heteroatom; Q represents the atoms necessary to form a five or six-membered ring; V represents an atom of oxygen, sulfur, or nitrogen; and U represents an ether, thoiether or amino group; provided that the indicated formulas encompass the addition of one or more fused rings; and provided that the ClogP for the compound of Formula I is not greater than 20; andb) a second light sensitive silver halide emulsion layer containing a compound of Formula II:COUP.sub.2 --(TIME).sub.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: April 25, 2000
    Assignee: Eastman Kodak Company
    Inventors: Jane S. Boff, Bernard A. Clark, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6010837
    Abstract: The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith an image dye-forming coupler of formula (I): ##STR1## wherein X is H or a coupling-off group, R is H; or R, R.sub.1 and R.sub.2 are the same or different and are coupler-modifying functional groups (with the provisos that (a) the moiety N(R.sub.1)COR.sub.2 may not be a carbamate, ureido or imido and (b) R.sub.1 and R.sub.2 may not both be phenyl or substituted phenyl); or R.sub.1 and R.sub.2 taken together with the nitrogen atom and the carbonyl group form a 5-10 membered heterocyclic ring which may contain one or more further heteroatoms selected from N, O and S, said heterocyclic ring being unsubstituted or substituted with one or more coupler-modifying functional groups, with the proviso that the ring is not a cyclic carbamate, ureido or imido; and wherein the coupler forms a dye with a peak absorption less than 565 nm.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: January 4, 2000
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Michael W. Crawley, Jane S. Boff, Christina M. Watts, Stephen P. Singer, Paul L. Stanley