Patents by Inventor Raymond K. Crandall

Raymond K. Crandall 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: 7989129
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a hydroxyquinoline.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Dennis J Prosser, J. Robinson Cowdery-Corvan, Raymond K Crandall, David M Skinner, Jean D Van Epps, Jr.
  • Patent number: 7718336
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent of, for example, a ?-diketone, a ketoester, a hydroxyl carboxylic acid, a hydroxyl carboxylic acid ester, a keto alcohol, or an amino alcohol.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: May 18, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Patent number: 7618756
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: November 17, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20090246662
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a hydroxyquinoline.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dennis J. Prosser, J. Robinson Cowdery-Corvan, Raymond K. Crandall, David M. Skinner, Jean D. Van Epps, JR.
  • Patent number: 7592110
    Abstract: An imaging member including an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the charge transport, and which overcoating is comprised of an acrylated polyol, a polyalkylene glycol, a crosslinking agent, a hydroxy functionalized siloxane and a charge transport component.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: September 22, 2009
    Assignee: Xerox Corporation
    Inventors: Kenny-Tuan Dinh, John F. Yanus, Raymond K. Crandall, Edward J. Radigan, Jr.
  • Patent number: 7531110
    Abstract: A unique solvent system adapted for high speed overcoat applications is disclosed. The solvent system comprises methyl alcohol and monochlorobenzene in a weight ratio of about 6:1 to about 1.5:1, respectively.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: May 12, 2009
    Assignee: Xerox Corporation
    Inventors: Raymond K. Crandall, John F. Yanus, Ed J. Radigan, Michael E. Zak
  • Publication number: 20080220352
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20080220351
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent of, for example, a ?-diketone, a ketoester, a hydroxyl carboxylic acid, a hydroxyl carboxylic acid ester, a keto alcohol, or an amino alcohol.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20080193866
    Abstract: An imaging member including an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the charge transport, and which overcoating is comprised of an acrylated polyol, a polyalkylene glycol, a crosslinking agent, a hydroxy functionalized siloxane and a charge transport component.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Inventors: Kenny-Tuan Dinh, John F. Yanus, Raymond K. Crandall, Edward J. Radigan
  • Patent number: 7229562
    Abstract: A filtration system comprising a filter cassette having integrated ultrasonic transducers incorporated therein, and a method for using the same. The integrated system of filters and transducers can be hardened for use in hazardous environments, and is particularly suitable for the implementation of sonication in cross flow filtration processes further integrated with a manufacturing process. The system provides cost savings both in terms of less equipment and space for cleaning processes on the manufacturing floor.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: June 12, 2007
    Assignee: Xerox Corporation
    Inventors: Raymond K. Crandall, Kenneth Strong, Robert Meyer
  • Patent number: 6904252
    Abstract: An image-bearing article used in liquid contact electrostatic printing (CEP) is formed from polymers that meet the requisite conformance and heat stability for the CEP process. Excessive absorption of toner carrier liquids by the image-bearing article in liquid CEP leads to the deterioration of the image-bearing article and reduces the useful life of the image-bearing article. The absorption of the toner carrier fluid may be controlled by the addition of oxides, silicone elastomers containing phenyl end groups, fluorosilicones or increasing the cross-linking density of the methyl silicones.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: June 7, 2005
    Assignee: Xerox Corporation
    Inventors: Constance J. Thornton, Joseph Mammino, Robert M. Ferguson, Paul J. Brach, Edward Scales, Raymond K. Crandall, Edward L. Schlueter, Jr.
  • Patent number: 6814890
    Abstract: A process for preparing a mixed solvent adhesive solution involving mixing an alcohol and an adhesive to form an adhesive solution; mixing a charge transporting molecule and a solvent other than alcohol to form a charge transport solution; mixing the charge transport solution with the adhesive solution to form a mixed solvent solution; mixing an electrically conductive filler and a solvent to form a filled solvent solution; and mixing the filled solvent solution to the mixed solvent solution so as to form a mixed solvent adhesive solution.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: November 9, 2004
    Assignee: Xerox Corporation
    Inventors: Ihor W. Tamawskyj, Xiaoying Yuan, Raymond K. Crandall
  • Publication number: 20040190941
    Abstract: An image-bearing article used in liquid contact electrostatic printing (CEP) is formed from polymers that meet the requisite conformance and heat stability for the CEP process. Excessive absorption of toner carrier liquids by the image-bearing article in liquid CEP leads to the deterioration of the image-bearing article and reduces the useful life of the image-bearing article. The absorption of the toner carrier fluid may be controlled by the addition of oxides, silicone elastomers containing phenyl end groups, fluorosilicones or increasing the cross-linking density of the methyl silicones.
    Type: Application
    Filed: March 26, 2003
    Publication date: September 30, 2004
    Applicant: XEROX CORPORATION
    Inventors: Constance J. THORNTON, Joseph MAMMINO, Robert M. FERGUSON, Paul J. BRACH, Edward SCALES, Raymond K. CRANDALL, Edward L. SCHLUETER
  • Patent number: 6669850
    Abstract: A purification process composed of: contacting a contaminated composition including an optional fluid, a polymer, and an impurity with an adsorbent composition including an adsorbent, wherein the adsorbent is selected from the group consisting of an alumina and a magnesium sulfate, wherein a portion of the impurity binds to the adsorbent, wherein the polymer is a polycarbonate, a carbazole, a polyarylate, or a copolyester having the formula where n is the degree of polymerization.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: December 30, 2003
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, John F. Yanus, Markus R. Silvestri, Damodar M. Pai, Samuel Kaplan, Raymond K. Crandall, Kathleen M. Carmichael, David J. Maty
  • Publication number: 20030015690
    Abstract: A process for preparing a mixed solvent adhesive solution involving mixing an alcohol and an adhesive to form an adhesive solution; mixing a charge transporting molecule and a solvent other than alcohol to form a charge transport solution; mixing the charge transport solution with the adhesive solution to form a mixed solvent solution; mixing an electrically conductive filler and a solvent to form a filled solvent solution; and mixing the filled solvent solution to the mixed solvent solution so as to form a mixed solvent adhesive solution.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 23, 2003
    Applicant: Xerox Corporation
    Inventors: Ihor W. Tamawskyj, Xiaoying (Elizabeth) Yuan, Raymond K. Crandall
  • Patent number: 6087414
    Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3##
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: July 11, 2000
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall
  • Patent number: 6020096
    Abstract: An electrophotographic imaging member comprising a charge generating layer comprising trigonal selenium particles and a charge transport layer, the charge transport layer includinga protonic acid or Lewis acid,a charge transporting small molecule,a film forming polymer, andpolyalkylene-block-polyethylene oxide.This imaging member may be fabricated using a suitable solvent for applying the charge transport layer.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: February 1, 2000
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Markus R. Silvestri, Damodar M. Pai, John F. Yanus, Raymond K. Crandall, Samuel Kaplan, Karen S. Garland
  • Patent number: 5889077
    Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units, with (i) a formaldehyde source, and (ii) an unsaturated acid in the presence of an acid catalyst, thereby forming a curable polymer with unsaturated ester groups. Also disclosed is a process for preparing an ink jet printhead with the above polymer.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: March 30, 1999
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall
  • Patent number: 5761809
    Abstract: Disclosed is a process which comprises reacting a haloalkylated aromatic polymer with a material selected from the group consisting of unsaturated ester salts, alkoxide salts, alkylcarboxylate salts, and mixtures thereof, thereby forming a curable polymer having functional groups corresponding to the selected salt. Another embodiment of the present invention is directed to a process for preparing an ink jet printhead with the curable polymer thus prepared.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: June 9, 1998
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall
  • Patent number: 5753783
    Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR2## B is one of several specified groups, such as ##STR3## or mixtures thereof, and n is an integer representing the number of repeating monomer units, with an acetyl halide and dimethoxymethane in the presence of a halogen-containing Lewis acid catalyst and methanol, thereby forming a haloalkylated polymer. In a specific embodiment, the haloalkylated polymer is then reacted further to replace at least some of the haloalkyl groups with photosensitivity-imparting groups. Also disclosed is a process for preparing a thermal ink jet printhead with the aforementioned polymer.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: May 19, 1998
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Ram S. Narang, Thomas W. Smith, David J. Luca, Raymond K. Crandall