Patents by Inventor Xiqiang Yang

Xiqiang Yang 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: 6756192
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein: the substituents are as defined in the application.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: June 29, 2004
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving
  • Patent number: 6649332
    Abstract: A method of processing an imagewise exposed color photographic film, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light sensitive silver halide emulsion and image dye coupler, which method comprises contacting the imagewise exposed color photographic film with an aqueous solution containing a non-blocked developing agent, at a temperature of between 30 to 60° C.; and wherein said film further comprises an incorporated reducing agent, at least one organic silver salt and an amido compound wherein the reducing agent is substantially unreactive in the aqueous color development step described above, but wherein color development of the same imagewise exposed film is capable of being alternatively obtained, without any externally applied developing agent, by heating said film to a temperature above about 80° C.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: November 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, Xiqiang Yang, Benjamin P. Hoag
  • Patent number: 6610450
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a phenolic activating agent in combination with a blocked color-forming agent of Structure I: wherein PUG is a photographically useful color-forming agent, LINK 1 and LINK 2 are linking groups; TIME is a timing group; HET is a heterocyclic group, and the other groups are as defined in the specification.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: August 26, 2003
    Assignee: Eastman Kodak Company
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby
  • Publication number: 20030129552
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1
    Type: Application
    Filed: May 16, 2002
    Publication date: July 10, 2003
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6558890
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 6, 2003
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy, Linda B. Nothhard
  • Patent number: 6551768
    Abstract: Blocked photographically useful groups decompose thermally via a Lossen rearrangement reaction, including, for example, compounds represented by the following structure: In the above structure, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: April 22, 2003
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6537712
    Abstract: This invention relates to a color photothermographic element comprising an imaging layer having associated therewith a compound of Structure I: wherein DEV, LINK, TIME, n, T, t, C*, R12, D, p, X, q, W, and w are defined in the application. Such compounds have good reactivity as developing agents when thermally activated under preselected conditions. The invention is also directed to a method of developing a color photothermographic element, including dry development systems.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: March 25, 2003
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy, Jared B. Mooberry, James J. Seifert, James H. Reynolds, Lyn M. Irving, Zbyslaw R. Owczarczyk, David K. Southby
  • Patent number: 6534226
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: March 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
  • Patent number: 6513212
    Abstract: A color photographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, at least one of units comprising a light-sensitive silver-halide emulsion, binder, and a coupler represented by formula I: COUP—(T)m—L—DYE′  (I) wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first cyan dye and is bonded at a coupling position to a releasable group that forms a second dye of the same hue, as described in the specification.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 4, 2003
    Assignee: Eastman Kodak Company
    Inventors: Jared B. Mooberry, Wojciech K. Slusarek, David T. Southby, David H. Levy, Xiqiang Yang
  • Patent number: 6506528
    Abstract: This invention relates to a photothermographic color element containing a mixture of blocked developers in the same emulsion layer, which blocked developers having different onset temperatures. Such a mixture has been found to allow for lower film processing temperatures and/or shorter times of development with respect to the blocked developer having a higher onset temperature. Conversely, improved discrimination can be obtained with respect to the blocked developer having the lower onset temperature.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 14, 2003
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owczarczyk, David T. Southby, Xiqiang Yang
  • Patent number: 6506546
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein PUG is a photographically useful group; LINK 1 and LINK 2 are linking groups; TIME is a timing group; T represents t independently selected substituted or unsubstituted alkyl or aryl groups, t is 0, 1, or 2 and if t is 2, the T groups can form a ring; HET is a heterocyclic group which optionally can form a ring with a T group; R12 is hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or R12 can form a ring with a T group or with HET; 1 is 0 or 1; m is 0, 1, or 2; and n is 0 or 1.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: January 14, 2003
    Assignee: Eastman Kodak Company
    Inventors: Zbyslaw R. Owozarczyk, Xiqiang Yang, David T. Southby
  • Publication number: 20020177086
    Abstract: A method of processing an imagewise exposed color photographic film, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light sensitive silver halide emulsion and image dye coupler, which method comprises contacting the imagewise exposed color photographic film with an aqueous solution containing a non-blocked developing agent, at a temperature of between 30 to 60° C.; and wherein said film further comprises an incorporated reducing agent, at least one organic silver salt and an amido compound wherein the reducing agent is substantially unreactive in the aqueous color development step described above, but wherein color development of the same imagewise exposed film is capable of being alternatively obtained, without any externally applied developing agent, by heating said film to a temperature above about 80° C.
    Type: Application
    Filed: April 30, 2002
    Publication date: November 28, 2002
    Inventors: David T. Southby, Xiqiang Yang, Benjamin P. Hoag
  • Patent number: 6440618
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application, wherein B is a six-membered heteroaromatic ring. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6440648
    Abstract: A method of processing an imagewise exposed color photographic film, said film having at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light sensitive silver halide emulsion and image dye coupler, which method comprises contacting the imagewise exposed color photographic film with an aqueous solution containing a non-blocked developing agent, at a temperature of between 30 to 60° C.; and wherein said film further comprises an incorporated reducing agent, at least one organic silver salt and an amido compound wherein the reducing agent is substantially unreactive in the aqueous color development step described above, but wherein color development of the same imagewise exposed film is capable of being alternatively obtained, without any externally applied developing agent, by heating said film to a temperature above about 80° C.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, Xiqiang Yang, Benjamin P. Hoag
  • Patent number: 6426179
    Abstract: This invention relates to an imaging element, such as a photographic or photothermographic element comprising a silver halide emulsion layer, wherein the element also comprises a compound of Structure I: wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 30, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, Mark E. Irving, David H. Levy
  • Patent number: 6413708
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: July 2, 2002
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy
  • Patent number: 6372421
    Abstract: This invention relates to a silver halide photothermographic imaging element comprising at least one silver halide emulsion layer, said silver halide element further comprising an amido compound of Formula I wherein INH is a development inhibitor; LINK is a linking or timing group and m is 0, 1 or 2; and R1 and R2 independently are a hydrogen atom or an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m-INH group, or are substituted with a —NR3C(═O)-(LINK)m-INH , with R3 being defined the same as R1 or R2, with the proviso that only one of R1 and R2 can be a hydrogen atom. It further relates to methods of image formation utilizing said element.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: April 16, 2002
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, Xiqiang Yang, Zybslaw R. Owczarczyk
  • Publication number: 20020028412
    Abstract: This invention comprises an imaging element comprising an imaging layer having associated therewith a phenolic activating agent in combination with a blocked color-forming agent of Structure I: 1
    Type: Application
    Filed: June 1, 2001
    Publication date: March 7, 2002
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby
  • Publication number: 20020025498
    Abstract: A color photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, and a blocked developer in the presence of a thermal solvent represented by the following structure: 1
    Type: Application
    Filed: May 16, 2001
    Publication date: February 28, 2002
    Inventors: Xiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby, Mark E. Irving, Paul B. Merkel, Lyn M. Irving, David H. Levy
  • Publication number: 20020019571
    Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: 1
    Type: Application
    Filed: July 13, 2001
    Publication date: February 14, 2002
    Inventors: Wojciech K. Slusarek, Xiqiang Yang, David H. Levy