Patents by Inventor Yu Qi

Yu Qi 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).

  • Polythiophenes and electronic devices generated therefrom
    Patent number: 7250625
    Abstract: An electronic device containing a polythiophene wherein R represents a side chain, m represents the number of R substituents; A is a divalent linkage; x, y and z represent, respectively, the number of Rm substituted thienylenes, unsubstituted thienylenes, and divalent linkages A, respectively, in the monomer segment subject to z being 0 or 1, and n represents the number of repeating monomer segments in the polymer or the degree of polymerization.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: July 31, 2007
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Yu Qi, Yiliang Wu
  • PHOTORECEPTOR WITH OVERCOAT LAYER
    Publication number: 20070166634
    Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, the overcoating layer being a cured film formed from a film forming resin composition including at least a melamine compound, a polyol, and a charge transport compound, where the charge transport compound is represented by: QL-OH]n. where Q represents a charge transport component, L represents a divalent linkage group, and represents a number of repeating segments or groups.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 19, 2007
    Applicant: XEROX CORPORATION
    Inventors: Yu QI, Hany Aziz, Nan-Xing Hu, Ah-Mee Hor, Kenny-Tuan Dinh, John Yanus
  • Imaging member having inorganic material filler surface grafted with charge transport moiety
    Patent number: 7232633
    Abstract: An imaging member with a surface-grafted material having an inorganic material, a linking group, and a charge transport moiety capable of transporting holes or electrons, and the charge transport moiety is grafted to a surface of the inorganic material via the linking group, and further, an image forming apparatus having the imaging member.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: June 19, 2007
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Rafik O Loutfy
  • POLYTHIOPHENES AND DEVICES THEREOF
    Publication number: 20070117963
    Abstract: An electronic device containing a polythiophene wherein R represents a side chain, m represents the number of R substituents; A is a divalent linkage; x, y and z represent, respectively, the number of Rm substituted thienylenes, unsubstituted thienylenes, and divalent linkages A, respectively, in the monomer segment subject to z being 0 or 1, and n represents the number of repeating monomer segments in the polymer or the degree of polymerization.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 24, 2007
    Inventors: Beng Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
  • Phenolic hole transport polymers
    Publication number: 20070087276
    Abstract: A polymer having hole transport functionality and antioxidant properties is disclosed. The polymer comprises a phenolic segment and a hole transport segment. The polymer is suitable for use in the charge transport layer of an imaging member. Processes for producing the polymer are also disclosed.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 19, 2007
    Inventors: Yu Qi, Nan-Xing Hu, Greg McGuire, Cuong Vong
  • Photoconductive members
    Publication number: 20070087277
    Abstract: A photoconductive imaging member including at least a charge generating layer, a charge transport layer, and an overcoat layer. The overcoat layer includes a cured or substantially crosslinked product of at least a phenol compound and a charge transport compound.
    Type: Application
    Filed: October 28, 2005
    Publication date: April 19, 2007
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu
  • POLYTHIOPHENES AND DEVICES THEREOF
    Publication number: 20070088149
    Abstract: Polythiophenes of the formula wherein R is a side chain; m is the number of substituents; A is a divalent linkage; x, y and z represent, respectively, the numbers of R substituted thienylene, unsubstituted thienylene, and divalent linkages A in the monomer segment with z being either 0 or 1; and n represents the number of the repeating monomer segments in the polymer chain or the degree of polymerization.
    Type: Application
    Filed: November 9, 2006
    Publication date: April 19, 2007
    Inventors: Beng Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
  • Aromatic disiloxane compositions
    Publication number: 20070081830
    Abstract: Processes for preparing aromatic matrix materials by metal hydrosilylation followed by alcholysis are provided. Silicon-containing layers that contain such aromatic matrix materials are also provided, as well as electrophotographic photoreceptors and electrophotographic imaging apparatuses containing such silicon-containing layers.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 12, 2007
    Applicant: Xerox Corporation
    Inventors: Timothy Bender, John Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu, Yu Qi
  • Photoconductive imaging members
    Publication number: 20070048636
    Abstract: A photoconductive imaging including at least a substrate, a charge generating layer, a charge transport layer, and an overcoat layer. The overcoat layer includes a crosslinked product of at least a phenolic resin and a phenol compound.
    Type: Application
    Filed: August 31, 2005
    Publication date: March 1, 2007
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Cheng-Kou Hsiao
  • Imaging member
    Publication number: 20070020539
    Abstract: Provided are a silane-phenol compound, a crosslinked siloxane outmost protective layer thereof, and an electrophotographic imaging member such as photoreceptor. The silane-phenol compound comprises (i) a phenol group and (ii) a silane group selected from the group consisting of alkoxysilyl, arylalkoxysilyl, aryloxysilyl, alkylaryloxysilyl, and combination thereof. The crosslinked siloxane outmost protective layer comprises the product of hydrolysis and condensation of a silanized hole transport compound and the silane-phenol compound. The crosslinked protective outmost layer may be used to manufacture an electrophotographic imaging member such as photoreceptor with improved properties such as image quality and cleanability, etc.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 25, 2007
    Inventors: Yu Qi, Nan-Xing Hu, Yvan Gagnon, Cheng-Kuo Hsiao, Ah-Mee Hor
  • Silane-phenol compound, overcoat formulation, and electrophotographic imaging member
    Publication number: 20070020540
    Abstract: Provided are a silane-phenol compound, a crosslinked silxoane-phenolic protective overcoat layer thereof, and an electrophotographic imaging member such as photoreceptor. The silane-phenol compound comprises (i) a phenol group and (ii) a silane group selected from the group consisting of alkoxysilyl, arylalkoxysilyl, aryloxysilyl, alkylaryloxysilyl, and combination thereof. The silicone overcoat is made from a formulation comprising the silane-phenol compound and a hydroxymethylated hole transport compound. The crosslinked siloxane-phenolic overcoat may be used to manufacture an electrophotographic imaging member such as photoreceptor with improved properties such as abrasive resistance, good image quality and cleanability, etc.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 25, 2007
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor
  • Photoconductive imaging members
    Patent number: 7166396
    Abstract: A photoconductive imaging member comprised of a substrate, a photogenerating layer, and thereover a charge transport layer comprised of a charge transport component or components, a polymer binder and metal oxide particles, wherein said metal oxide particles contain or are attached with or to a silane or a siloxane, or alternatively a polytetrafluoroethylene.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: January 23, 2007
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John F. Graham, Liang-Bih Lin, Cuong Vong
  • Surface grafted metal oxide particles and compositions comprising the same
    Patent number: 7153574
    Abstract: A composition includes a metal oxide particle, which can optionally be surface treated by a silane coupling agent, and an electron acceptor surface grafted to the metal oxide particle.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: December 26, 2006
    Assignees: Xerox Corporation, Fuji Xerox Co., Ltd.
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Hidemi Nukada, Hirofumi Nakamura
  • Photoconductive member
    Publication number: 20060286472
    Abstract: A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that minimizes oxidation.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 21, 2006
    Inventors: Yu Qi, Nan-Xing Hu, Gregory McGuire, Cheng-Kuo Hsiao
  • Barrier layer for an organic electronic device
    Publication number: 20060273302
    Abstract: A novel barrier layer which protects electronic devices from adverse environmental effects such as exposure to light, oxygen and/or moisture is described. The barrier layer comprises a polymer, an antioxidant, and an inorganic particulate material.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 7, 2006
    Inventors: Mana Birau, Yu Qi, Yihang Wu, Beng Ong
  • Polthiophenes and devices thereof
    Patent number: 7141644
    Abstract: Polythiophenes of the formula wherein R is a side chain; m is the number of substituents; A is a divalent linkage; x, y and z represent, respectively, the numbers of R substituted thienylene, unsubstituted thienylene, and divalent linkages A in the monomer segment with z being either 0 or 1; and n represents the number of the repeating monomer segments in the polymer chain or the degree of polymerization.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: November 28, 2006
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
  • Polythiophenes and devices thereof
    Patent number: 7132682
    Abstract: An electronic device containing a polythiophene wherein R represents a side chain, m represents the number of R substituents; A is a divalent linkage; x, y and z represent, respectively, the number of Rm substituted thienylenes, unsubstituted thienylenes, and divalent linkages A, respectively, in the monomer segment subject to z being 0 or 1, and n represents the number of repeating monomer segments in the polymer or the degree of polymerization.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: November 7, 2006
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Lu Jiang, Yu Qi, Yiliang Wu
  • Polythiophenes and devices thereof
    Patent number: 7132500
    Abstract: A polythiophene wherein the monomer segments thereof contain wherein A is a side chain; B is hydrogen or a side chain; and D is a divalent segment, and wherein the number of A-substituted thienylene units (I) in the monomer segments is from about 1 to about 10, the number of B-substituted thienylene units (II) is from 0 to about 5, and the number of divalent segments D is 0 or 1.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: November 7, 2006
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Ping Liu, Yiliang Wu, Yu Qi
  • Photoconductive members
    Patent number: 7122283
    Abstract: A photoconductive member containing, for example, a substrate, a photogenerating layer, a charge transport layer and an overcoat layer wherein the overcoat layer is comprised of a crosslinked siloxane composite containing a caprolactone-siloxane.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: October 17, 2006
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, H. Bruce Goodbrand, Ah-Mee Hor, Cheng-Kuo Hsiao, Cuong Vong, Gregory McGuire
  • Compound with indolocarbazole moieties and devices containing such compound
    Publication number: 20060214155
    Abstract: A compound composed of a plurality of optionally substituted indolocarbazole moieties which are the same or different from each other.
    Type: Application
    Filed: June 27, 2005
    Publication date: September 28, 2006
    Inventors: Beng Ong, Yu Qi, Yiliang Wu, Yuning Li