Patents by Inventor Lieng-Huang Lee

Lieng-Huang Lee 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: 5370931
    Abstract: A fuser member comprised of a supporting substrate comprising an outer layer of a volume grafted elastomer, which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluoroelastomer and a polyorganosiloxane, said volume graft having been formed by dehydrofluorination of said fluoroelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator; and wherein said outer layer contains a reactive metal oxide in an amount of from about 2 to about 7 weight percent.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: December 6, 1994
    Assignee: Xerox Corporation
    Inventors: Louis D. Fratangelo, Santokh S. Badesha, Arnold W. Henry, Robert M. Ferguson, David H. Pan, George J. Heeks, Victor Berko-Boateng, Lieng-Huang Lee
  • Patent number: 5089364
    Abstract: An electrophotographic imaging member is disclosed which contains a substrate having an electrically conductive surface, a dried continuous adhesive layer comprising a semi-interpenetrating network derived from a coating mixture comprising a blend of a self-crosslinkable polyurethane and a non-self-crosslinkable polyurethane, a thin homogeneous charge generating layer, and a charge transport layer comprising a film forming polymer.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: February 18, 1992
    Assignee: Xerox Corporation
    Inventors: Lieng-Huang Lee, Diane C. Lincoln, Christine J. Tarnawskyj
  • Patent number: 4895783
    Abstract: An electrophotographic imaging member comprising a supporting substrate, at least one photoconductive layer and an overcoating layer having one side contiguous with the electrophotographic imaging layer and the other side exposed to the ambient atmosphere, the overcoating layer comprising a solid solution or molecular dispersion of a metal acetyl acetonate in an insulating film forming polymer.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: January 23, 1990
    Assignee: Xerox Corporation
    Inventors: Lieng-Huang Lee, Christine J. Tarnawskyj
  • Patent number: 4747992
    Abstract: A process is disclosed for forming at least one thin substantially uniform fluid coating comprising polymeric film forming material on a cylindrical mandrel, solidifying the fluid coating to form a uniform solid coating and separating the uniform solid coating from the mandrel. The process may comprise forming at least one thin substantially uniform fluid coating comprising polymeric film forming material around a cylindrical mandrel, the mandrel having a larger mass or lower thermal conductivity than the polymeric film forming material and a critical surface tension greater than the surface tension of the fluid coating, solidifying the fluid coating to form at least one thin substantially uniform solid coating comprising the polymeric film forming material around the cylindrical mandrel, heating both the uniform solid coating and the mandrel to a temperature at least above the apparent T.sub.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: May 31, 1988
    Inventors: Donald S. Sypula, Merlin E. Scharfe, Dennis A. Abramsohn, Paul J. Brach, Clifford H. Griffiths, Deborah J. Nichol-Landry, Andrew R. Melnyk, John W. Spiewak, Joseph Mammino, Edward C. Williams, Lieng-Huang Lee, Christine J. Tarnawskyj
  • Patent number: 4606934
    Abstract: A process for forming an overcoated electrophotographic imaging member comprising applying on an electrophotographic imaging member a coating in liquid form comprising a cross-linkable siloxanol-colloidal silica hybrid material having at least one silicon bonded hydroxyl group per every three --SiO-- units and a catalyst for the cross-linkable siloxanol-colloidal silica hybrid material, the coating in liquid form having an acid number less than about 1 and curing the cross-linkable siloxanol-colloidal silica hybrid material until the siloxanol-colloidal silica hybrid material forms a hard cross-linked solid organosiloxane-silica hybrid polymer layer.
    Type: Grant
    Filed: September 4, 1984
    Date of Patent: August 19, 1986
    Assignee: Xerox Corporation
    Inventors: Lieng-Huang Lee, Deborah J. Nichol-Landry, Christine J. Tarnawskyj
  • Patent number: 4407920
    Abstract: This invention is directed to a photoresponsive device comprised of a substrate, a photoconductive composition comprised of an inorganic photoconductive composition, or a layered organic photoresponsive device comprised of a photogenerating layer and a charge transport layer, followed by an overcoating top layer of a silicone resin containing therein a silicone containing ammonium salt of the formula ##STR1## wherein, R.sub.1, R.sub.2, R.sub.3, are independently selected from the group consisting of aliphatic and substituted aliphatic radicals, wherein the substituents include for example alkyl radicals, R.sub.4 is selected from the group consisting of aliphatic radicals, substituted aliphatic radicals, and the group ##STR2## wherein Y is a number of from about 2 to about 4, and R.sub.5 is hydrogen or an alkyl radical, X is an anion, and Z is a number of from 1 to about 5.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: October 4, 1983
    Assignee: Xerox Corporation
    Inventors: Lieng-Huang Lee, Deborah N. Landry
  • Patent number: 4291110
    Abstract: Disclosed is a novel hole trapping layer and the use of this layer in an overcoated photoresponsive device, this hole trapping layer being comprised of materials of the following formulas: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 which may be the same or different radicals, are selected from aliphatic, substituted aliphatic, aromatic, and substituted aromatic, the substituents including for example alkyl, halogen and the like, x and y are numbers from 2 to about 10 and preferably from 2 to about 4, m and n are numbers of from 1 to 3, the sum of m and n being equal to 4, and Z is a sulfonyl (--SO.sub.2) or a carboxyl (--CO.sub.2) radical. Examples of aliphatic radicals include alkyl of from 1 to about 20 carbon atoms such as methane, ethane, propane, butane, isobutane, pentane, neopentane, heptane, decane, tetradecane, eicosane, and the like.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: September 22, 1981
    Assignee: Xerox Corporation
    Inventor: Lieng-Huang Lee
  • Patent number: 4053310
    Abstract: A carrier particle for electrostatographic developer mixtures comprising a core having a thin, wear-resistant coating of a polysulfone. The carrier coating is durable and resistant to mechanical degradation. The carrier particle is used in conjunction with finely-divided toner particles to develop electrostatic latent images.
    Type: Grant
    Filed: January 30, 1976
    Date of Patent: October 11, 1977
    Assignee: Xerox Corporation
    Inventor: Lieng-Huang Lee
  • Patent number: 4039331
    Abstract: A carrier particle for electrostatographic developer mixtures comprising a core having an average diameter between 30 and 1,000 microns surrounded by an outer layer of polymeric vinyl pyridine and an organo silane, silanol or siloxane having from 1 to 3 hydrolyzable groups and an organic group attached directly to a silicon atom containing an unsaturated carbon-to-carbon linkage. The carrier particle is used with small finely-divided toner particles to develop electrostatic latent images.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: August 2, 1977
    Assignee: Xerox Corporation
    Inventor: Lieng-Huang Lee