Patents by Inventor Ah-Mee Hor

Ah-Mee Hor 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).

  • Coated substrate for photoreceptor
    Publication number: 20070059616
    Abstract: An imaging member includes a conductive substrate, a SiOx layer coated over the conductive substrate, a charge generating layer coated over the SiOx layer, and a charge transport layer
    Type: Application
    Filed: September 12, 2005
    Publication date: March 15, 2007
    Applicant: Xerox Corporation
    Inventors: Satchidanand Mishra, Anthony Horgan, Kent Evans, George Liebermann, Ah-Mee Hor, Min-Hong Fu, Richard Post, Kathleen Carmichael, Satish Parikh, Edward Grabowski, Donald Goodman, Gregory Kovacs
  • Display device with anthracene and triazine derivatives
    Patent number: 7169482
    Abstract: A device includes: an anode; a cathode; and a luminescent region between the cathode and the anode, wherein the luminescent region includes an anthracene derivative compound and a triazine derivative compound.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: January 30, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hany Aziz, Nan-Xing Hu, Zoran D. Popovic, Ah-Mee Hor
  • 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
  • Imaging members
    Publication number: 20070015072
    Abstract: A silicone overcoat (SOC) layer having a crosslinked polysiloxane composition comprising a perfluoropolyether segment are disclosed. The polysiloxane composition is the product of the hydrolysis and condensation of a SOC formulation comprising a perfluoropolyether compound, an aromatic silicon-containing compound, and a silicon-containing hole transport compound. An electrophotographic imaging member having such a SOC layer has improved properties.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 18, 2007
    Inventors: Nan-Xing Hu, John Graham, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • 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 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
  • PROCESS OF MAKING HYDROPHOBIC METAL OXIDE NANOPARTICLES
    Publication number: 20060171870
    Abstract: A process of treating metal oxide nanoparticles that includes mixing metal oxide nanoparticles, a solvent, and a surface treatment agent that is preferably a silane or siloxane is described. The treated metal oxide nanoparticles are rendered hydrophobic by the surface treatment agent being surface attached thereto, and are preferably dispersed in a hydrophobic aromatic polymer binder of a charge transport layer of a photoreceptor, whereby ?-? interactions can be formed between the organic moieties on the surface of the nanoparticles and the aromatic components of the binder polymer to achieve a stable dispersion of the nanoparticles in the polymer that is substantially free of large sized agglomerations.
    Type: Application
    Filed: April 5, 2004
    Publication date: August 3, 2006
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John Graham
  • Process of making hydrophobic metal oxide nanoparticles
    Patent number: 7081234
    Abstract: A process of treating metal oxide nanoparticles that includes mixing metal oxide nanoparticles, a solvent, and a surface treatment agent that is preferably a silane or siloxane is described. The treated metal oxide nanoparticles are rendered hydrophobic by the surface treatment agent being surface attached thereto, and are preferably dispersed in a hydrophobic aromatic polymer binder of a charge transport layer of a photoreceptor, whereby ?—? interactions can be formed between the organic moieties on the surface of the nanoparticles and the aromatic components of the binder polymer to achieve a stable dispersion of the nanoparticles in the polymer that is substantially free of large sized agglomerations.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: July 25, 2006
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John F. Graham
  • Crosslinked siloxane composite overcoat for photoreceptors
    Publication number: 20060160002
    Abstract: A crosslinked siloxane composite overcoat for electrophotographic photoreceptors, containing at least one siloxane-containing compound, a resin and metal oxide particles; photoreceptors containing the crosslinked siloxane composite overcoat; and image process cartridge and image forming apparatuses containing photoreceptors containing the crosslinked siloxane composite overcoat.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 20, 2006
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Timothy Bender, Yvan Gagnon, John Graham, Cheng-Kuo Hsiao, Ah-Mee Hor
  • Crosslinked siloxane outmost layer having aromatic siliconcontaining compounds for photoreceptors
    Publication number: 20060154161
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Application
    Filed: January 13, 2005
    Publication date: July 13, 2006
    Applicant: XEROX CORPORATION
    Inventors: Yu QI, Nan-Xing Hu, John Graham, Timothy Bender, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Photoconductive imaging members
    Patent number: 7070894
    Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of at least one copolymer of an aminoalkyltrialkoxysilane and a silane.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: July 4, 2006
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, John F. Graham, Ah-Mee Hor, Johann Junginger
  • Processes for the preparation of high sensitivity titanium phthalocyanines photogenerating pigments
    Publication number: 20060105254
    Abstract: A process for preparing a high sensitivity titanyl phthalocyanine (TiOPc) pigment includes dissolving a Type I TiOPc in a suitable solvent, precipitating an intermediate TiOPc pigment by quenching the solution comprising the dissolved Type I TiOPc in a solvent system comprising an alcohol and alkylene chloride such as, for example, methylene chloride, and treating the intermediate TiOPc pigment with monochlorobenzene. The resultant TiOPc pigment, which is designated as a Type V TiOPc, is suitable for use as a charge generating material in a photoreceptor of an imaging device.
    Type: Application
    Filed: November 18, 2004
    Publication date: May 18, 2006
    Inventors: Jin Wu, Liang-Bih Lin, Ah-Mee Hor, Roger Gaynor, Justin Galloway
  • Photoconductive members
    Patent number: 7037630
    Abstract: A photoconductive imaging member comprised of a supporting substrate, and thereover a single photoactive layer comprised of a mixture of a photogenerator component, an electron transport component, a transport component, and a polymeric binder; and wherein said photogenerating component is comprised of a mixture of a metal free phthalocyanine and a hydroxygallium phthalocyanine.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: May 2, 2006
    Assignee: Xerox Corporation
    Inventors: Cuong Vong, John F. Graham, Ah-Mee Hor, James M. Duff
  • Silicon layers for electrophotographic photoreceptors and methods for making the same
    Publication number: 20060073399
    Abstract: Silicon-containing layers for electrophotographic photoreceptors which have high mechanical strength, improved electrophotographic characteristics and improved image deletion characteristics even under conditions of high temperature and high humidity are provided. Such silicon-containing layers include silicon-containing compounds, which may be crosslinked, and antioxidants that can be selected from hindered phenol antioxidants, hindered amine antioxidants, thioether antioxidants and phosphite antioxidants. Electrophotographic photoreceptors and electrophotographic imaging apparatus containing such silicon-containing layers are also provided.
    Type: Application
    Filed: September 13, 2004
    Publication date: April 6, 2006
    Applicant: XEROX CORPORATION
    Inventors: Timothy Bender, John Graham, Yvan Gagnon, Nan-Xing Hu, Ah-Mee Hor
  • Polycarbonates and photoconductive imaging members
    Publication number: 20060030653
    Abstract: A composition comprised of a charge transport compound and a crosslinked polymer composition generated from the curing of a solution of a hydroxyl pendant polycarbonate, a hydroxylated charge transport compound, a curing agent and a solvent.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Inventors: Nan-Xing Hu, Timothy Bender, Ah-Mee Hor, H. Goodbrand, Yvan Gagnon, George Libermann
  • Imaging member having inorganic material filler surface grafted with charge transport moiety
    Publication number: 20060029872
    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: Application
    Filed: August 9, 2004
    Publication date: February 9, 2006
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Rafik Loutfy
  • Inorganic material surface grafted with charge transport moiety
    Publication number: 20060029803
    Abstract: 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.
    Type: Application
    Filed: August 9, 2004
    Publication date: February 9, 2006
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Rafik Loutfy
  • Polycarbonates and photoconductive imaging members
    Publication number: 20060029871
    Abstract: A member comprised of a photogenerating layer and a charge transport layer, and wherein the charge transport layer is comprised of a charge transport component or components, and a crosslinked polycarbonate polymer of the formula wherein X and Y represent the number of segments, and optionally wherein the sum of X and Y is equal to about 0.50.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Inventors: Nan-Xing Hu, Timothy Bender, Ah-Mee Hor, H. Goodbrand, Yvan Gagnon