Patents by Inventor Kam W. Law

Kam W. Law 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).

  • Publication number: 20040157145
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
    Type: Application
    Filed: December 30, 2003
    Publication date: August 12, 2004
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law, Vytautas Getautis, Maryte Daskeviciene, Edmundas Montrimas, Janina Gavutiene
  • Publication number: 20040151998
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group.
    Type: Application
    Filed: December 30, 2003
    Publication date: August 5, 2004
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Publication number: 20040152000
    Abstract: An electrophotographic article having a complex of charge generating material and at least one transfer material selected from the group consisting of electron transfer material and hole transfer material is formed by admixing the charge generating material, at least one transfer material, and an organic binder in a solvent to form a coatable dispersion comprising a complex of charge generating material and said at least one transfer material; and coating said coatable dispersion onto a conductive substrate to form a charge transfer layer on the electrophotoconductive article. A novel S-form titanyl oxyphthalocyanine is also preferred, the novel form displaying major peaks of Bragg's 2theta angle to the CuK-alpha characteristic X-ray (wavelength 1.541 Angstrom) at least at 9.5±0.2 degrees, 9.7±0.2 degrees, 11.7±0.2 degrees, 13.5±0.2 degrees, (optionally at 21±0.2 degrees and/or 23.5±0.2 degrees,) 24.1±0.2 degrees, 26.4±0.2 degrees, and 27.3±0.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Applicant: SAMSUNG Electronics Co. Ltd.
    Inventors: Jiayi Zhu, Zbigniew Tokarski, James A. Baker, Ronald J. Moudry, David T. Ask, Nusrallah Jubran, Kam W. Law
  • Publication number: 20040106054
    Abstract: This invention relates to a novel organophotoreceptor that includes a photoconductive layer having
    Type: Application
    Filed: August 20, 2003
    Publication date: June 3, 2004
    Inventors: Vytautas Getautis, Edmundas Montrimas, Ingrida Paulauskaite, Valentas Gaidelis, Vygintas Jankauskas, Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law
  • Publication number: 20040081903
    Abstract: This invention relates to a novel organophotoreceptor that comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having
    Type: Application
    Filed: August 5, 2003
    Publication date: April 29, 2004
    Inventors: Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law, Vytautas Getautis, Jonas V. Sidaravicius, Maryte Daskeviciene, Vygintas Jankauskas, Edmundas Montrimas, Valentas Gaidelis, Albina Stanisauskaite
  • Publication number: 20040063012
    Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate wherein the photoconductive element has
    Type: Application
    Filed: June 9, 2003
    Publication date: April 1, 2004
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20040043314
    Abstract: This invention relates to an organophotoreceptor that comprises:
    Type: Application
    Filed: June 3, 2003
    Publication date: March 4, 2004
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Patent number: 6696209
    Abstract: An organophotoreceptor that includes: (a) a charge transport compound having the formula  where R1 and R2 are, independently, a fluorenyl group; R3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and X is a sulfonyldiphenylene group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: February 24, 2004
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katrizky, Ritu Jain, Anatoily Vakulenko
  • Patent number: 6689523
    Abstract: This invention relates to an organophotoreceptor that includes: (a) a charge transport compound having the formula  where R1 and R2 are, independently, a carbazolyl group; R3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and X is a sulfonyldiphenylene group; (b) a charge generating compound; and (c) an electrically conductive substrate.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: February 10, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Patent number: 6670085
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine, carbazole and/or triarylmethane groups) connected by a central bridging group.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: December 30, 2003
    Assignee: Samsung Electronics Co. Ltd
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Publication number: 20030235769
    Abstract: A crystalline phase of titanyl oxyphthalocyanine, referred to herein as the S-phase, has an internal blend of lattice arrangements is provided by treatment of the gamma-form of titanyl oxyphthalocyanine. The S-phase is a truly new phase, and not a mixture of particles of various phases (e.g., combinations of the beta-phase and the gamma-phase), with internal lattice distributions of atoms and molecules forming a new, non-continuous, non-uniform lattice structure. The x-ray spectrum shows a blend of diffraction peaks, having peaks that have previously been distinctly present only collectively among various crystalline forms of titanyl oxyphthalocyanine, but can now be provided in a single crystalline form. The visible spectra show significant absorption differences. The novel S-form titanyl oxyphthalocyanine is also used in a photoconductor displaying major peaks of Bragg's 2 theta angle to the CuK-alpha characteristic X-ray (wavelength 1.541 Angstrom) at least at 9.5±0.2 degrees, 9.7±0.
    Type: Application
    Filed: December 24, 2002
    Publication date: December 25, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jiayi Zhu, Zbigniew Tokarski, James A. Baker, Ronald J. Moudry, David T. Ask, Nusrallah Jubran, Kam W. Law
  • Publication number: 20030215728
    Abstract: Improved organophotoreceptor include:
    Type: Application
    Filed: March 6, 2003
    Publication date: November 20, 2003
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20030207188
    Abstract: Improved organophotoreceptors have:
    Type: Application
    Filed: March 6, 2003
    Publication date: November 6, 2003
    Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
  • Publication number: 20030203296
    Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport composition comprising molecules having the formula 1
    Type: Application
    Filed: March 10, 2003
    Publication date: October 30, 2003
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Publication number: 20030203297
    Abstract: This invention relates to a novel organophotoreceptor that includes:
    Type: Application
    Filed: March 6, 2003
    Publication date: October 30, 2003
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski
  • Publication number: 20030198880
    Abstract: This invention relates to a novel organophotoreceptor that includes:
    Type: Application
    Filed: January 22, 2003
    Publication date: October 23, 2003
    Applicant: SAMSUNG Electronics Co. Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katritzky, Ritu Jain, Rexiat Maimait
  • Publication number: 20030138712
    Abstract: An organophotoreceptor that includes:
    Type: Application
    Filed: November 6, 2002
    Publication date: July 24, 2003
    Applicant: SAMSUNG Electronics Co. Ltd.
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katrizky, Ritu Jain, Anatoliy Vakulenko
  • Publication number: 20030134940
    Abstract: A liquid ink for developing electrophotography images comprises:
    Type: Application
    Filed: December 31, 2002
    Publication date: July 17, 2003
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Eric D. Morrison, Julie Qian, James A. Baker, Christopher J. Wolters, Kam W. Law
  • Publication number: 20030129513
    Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine, carbazole and/or triarylmethane groups) connected by a central bridging group.
    Type: Application
    Filed: September 24, 2001
    Publication date: July 10, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
  • Publication number: 20030113132
    Abstract: A novel charge transport compound, a novel process using that novel compound and an organophotoreceptor includes:
    Type: Application
    Filed: August 9, 2002
    Publication date: June 19, 2003
    Applicant: Samsung Information Systems America
    Inventors: Kam W. Law, Nusrallah Jubran, Zbigniew Tokarski, Alan R. Katritzky, Ritu Jain, Rexiat Maimait