Patents by Inventor J. Stephen Kittelberger

J. Stephen Kittelberger 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: 6473571
    Abstract: An article including a container with an opening adapted to accommodate and dispense the contents therefrom; a closure in contact with the container; a signal module in communication with the closure; and a transmitter module adapted to send a signal or signals from the signal module to a receiver module resident in a target printing machine.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: October 29, 2002
    Assignee: Xerox Corporation
    Inventors: Paul M. Wegman, J. Stephen Kittelberger
  • Patent number: 6418283
    Abstract: An article including: a container with an opening which container is adapted to accommodate and dispense the contents therefrom; a closure seal in contact with the container; and a signal module in communication with the closure. When the closure is infringed by an operator, the signal module will be activated causing, for example, the container to vibrate for a set period of time. This container may be sealed by first and second seals.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 9, 2002
    Assignee: Xerox Corporation
    Inventors: Paul M. Wegman, J. Stephen Kittelberger
  • Patent number: 6359105
    Abstract: Cross-linked toner resin having linear portions and cross-linked portions of high density microgel particles, where the toner resin is an unsaturated polyester resin, is prepared using a liquid chemical initiator such as 1,1-bis(t-butyl peroxy)-3,3,5-trimethylcyclohexane so that the cross-linked resin achieved contains less than 0.20 percent by weight of acids. In particular, the cross-linked toner resin is free of benzoic acid. The method of making the cross-linked toner resin includes (a) spraying the liquid chemical initiator onto the unsaturated polyester resin prior to, during or subsequent to melting of the unsaturated polyester resin to form a polymer melt; and (b) subsequently cross-linking the polymer melt under high shear to form the cross-linked toner resin.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: March 19, 2002
    Assignee: Xerox Corporation
    Inventors: John James Ianni, J. Stephen Kittelberger, Daniel Andrew Harrington, Eugene Frederick Young, Hui Chang, Nilmarie Santos-Roman, Dennis J. O'Keefe, Joseph Louis Leonardo, Paul Lynn Jacobs, Kiran B. Sheth, Dongming Li, Louis Joseph Kurtic, Jr., Robert Edward Lutz, Yelena Lipovetskaya
  • Patent number: 6127080
    Abstract: A process for the preparation of an unsaturated polyester which comprises (i) reacting an organic diol with a cyclic akylene carbonate in the presence of a first catalyst to thereby form a polyalkoxy diol, and (ii) optionally adding thereto a further amount of cyclic alkylene carbonate in the presence of a second catalyst, and (iii) subsequently polycondensing the resulting mixture with a dicarboxylic acid.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: October 3, 2000
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Daniel A. Foucher, J. Stephen Kittelberger, Dongming Li, Marko D. Saban, Alan E. J. Toth, Robert D. Bayley
  • Patent number: 6063827
    Abstract: A process for the preparation of an unsaturated polyester which comprises (i) reacting an organic diol with a cyclic akylene carbonate in the presence of a first catalyst to thereby form a polyalkoxy diol, and (ii) optionally adding thereto a further amount of cyclic alkylene carbonate in the presence of a second catalyst, and (iii) subsequently polycondensing the resulting mixture with a dicarboxylic acid.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: May 16, 2000
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Daniel A. Foucher, J. Stephen Kittelberger, Dongming Li, Marko D. Saban, Alan E. J. Toth, Robert D. Bayley
  • Patent number: 6017671
    Abstract: A toner composition comprised of a polyester resin with hydrophobic end groups, colorant, optional wax, optional charge additive, and optional surface additives.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: January 25, 2000
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Marko D. Saban, Alan E. J. Toth, Michael L. Grande, J. Stephen Kittelberger
  • Patent number: 5997272
    Abstract: A die for the preparation of a toner resin in an extruder having a housing defining a housing aperture therein and a conveyor for conveying the resin through the housing aperture to form a stream of resin is provided. The die includes a member connected to a first end of the housing. The member defines an opening therethrough. The cross sectional area of the opening is progressively reduced in the direction of the stream of resin for at least a substantial portion of the opening.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: December 7, 1999
    Assignee: Xerox Corporation
    Inventors: Joseph L. Leonardo, J. Stephen Kittelberger, John J. Ianni, Fraser S. Smith, Fumii Higuchi
  • Patent number: 5805964
    Abstract: An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an inorganic coating on at least a portion of the electrode member.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Arnold W. Henry, George J. Heeks, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch
  • Patent number: 5787329
    Abstract: An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an organic coating on at least a portion of the electrode member.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: July 28, 1998
    Assignee: Xerox Corporation
    Inventors: John R. Laing, Edward J. Gutman, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch, Santokh S. Badesha, Arnold W. Henry, George J. Heeks
  • Patent number: 5761587
    Abstract: An apparatus for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus which includes providing a low surface energy coating on at least a portion of the electrode member.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: June 2, 1998
    Assignee: Xerox Corporation
    Inventors: John R. Laing, Edward J. Gutman, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch, Santokh S. Badesha, Arnold W. Henry, George J. Heeks
  • Patent number: 5750909
    Abstract: An apparatus for the preparation of a mixture of toner resin and initiator, to form a toner resin or toner mixture including cross-linked microgel particles is provided. The apparatus includes a toner extruder having the resin being conveyed therethrough and an adder for adding the initiator to the toner resin in the toner extruder to form the toner resin or mixture. The apparatus also includes a measurer for measuring the cross-linked microgel particles in the toner mixture substantially immediately after mixing in the toner extruder and transmitting a signal indicative of the quantity of cross-linked microgel particles in the toner resin or mixture. The apparatus also includes a controller for controlling the addition rate of initiator in response to the signals from the measurer.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: May 12, 1998
    Assignee: Xerox Corporation
    Inventors: Michael G. Hawkins, Hui Chang, Joo T. Chung, Jennifer E. Dewan, John J. Ianni, J. Stephen Kittelberger, Joseph L. Leonardo, Timothy L. Lincoln, Yvonne M. Kenney
  • Patent number: 5689757
    Abstract: A method and apparatus for determining the level of roughness in a paper or other substrate to be processed in a machine, and for correspondingly adjusting the machine parameters that are affected by the different levels of substrate roughness, before the substrate is processed through the machine.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: November 18, 1997
    Assignee: Xerox Corporation
    Inventors: John L. Ferrante, Leela Ganguly, J. Stephen Kittelberger, Kathryn A. Wallace, Joseph R. Weber
  • Patent number: 5650484
    Abstract: An apparatus for the preparation of a mixture of toner resin and initiator, to form a toner resin or toner mixture including cross-linked microgel particles is provided. The apparatus includes a toner extruder having the resin being conveyed therethrough and an adder for adding the initiator to the toner resin in the toner extruder to form the toner resin or mixture. The apparatus also includes a measurer for measuring the cross-linked microgel particles in the toner mixture substantially immediately after mixing in the toner extruder and transmitting a signal indicative of the quantity of cross-linked microgel particles in the toner resin or mixture. The apparatus also includes a controller for controlling the addition rate of initiator in response to the signals from the measurer.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: July 22, 1997
    Assignee: Xerox Corporation
    Inventors: Michael G. Hawkins, Hui Chang, Joo T. Chung, Jennifer E. Dewan, John J. Ianni, J. Stephen Kittelberger, Joseph L. Leonardo, Timothy L. Lincoln, Yvonne M. Kenney
  • Patent number: 5601689
    Abstract: A process for removing a xerographic image from a substrate which comprises contacting the image with an aqueous solution comprised of water, a surfactant, ionic salts and caustic reagent.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: February 11, 1997
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, David F. Rutland, Walter Mychajlowskij, J. Stephen Kittelberger
  • Patent number: 5601960
    Abstract: A process comprising:(a) reactive melt mixing of a base resin with a chemical initiator and crosslinking of said base resin to enable a highly crosslinked precursor resin, said highly crosslinked precursor resin being substantially free of sol, and comprising uncrosslinked portions and crosslinked portions, said crosslinked portions comprised of high density crosslinked microgel particles; and(b) accomplishing dilution by melt mixing said highly crosslinked precursor resin of (a) with a base resin to form a partially crosslinked toner resin, said toner resin being substantially free of sol, and comprising linear uncrosslinked portions and crosslinked portions, said crosslinked portions comprised essentially of high density crosslinked microgel particles, wherein said microgel particles are present in an amount of from about 1 to about 45 percent by weight of said toner resin.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: February 11, 1997
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Enno E. Agur, T. Brian McAneney, Sheau V. Kao, Gerald R. Allison, Michael S. Hawkins, Bernard Grushkin, J. Stephen Kittelberger, Joo T. Chung, William H. Hollenbaugh, Jr.
  • Patent number: 5512401
    Abstract: A toner composition comprised of a pigment and a polyimideamic acid resin.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 30, 1996
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Walter Mychajlowskij, J. Stephen Kittelberger
  • Patent number: 5500324
    Abstract: A process comprising:(a) reactive melt mixing of a base resin with a chemical initiator and crosslinking of said base resin to enable a highly crosslinked precursor resin, said highly crosslinked precursor resin being substantially free of sol, and comprising uncrosslinked portions and crosslinked portions, said crosslinked portions comprised of high density crosslinked microgel particles; and(b) accomplishing dilution by melt mixing said highly crosslinked precursor resin of (a) with a base resin to form a partially crosslinked toner resin, said toner resin being substantially free of sol, and comprising linear uncrosslinked portions and crosslinked portions, said crosslinked portions comprised essentially of high density crosslinked microgel particles, wherein said microgel particles are present in an amount of from about 1 to about 45 percent by weight of said toner resin.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: March 19, 1996
    Assignee: Xerox Corporation
    Inventors: Hadi K. Mahabadi, Enno E. Agur, T. Brian McAneney, Sheau V. Kao, Gerald R. Allison, Michael S. Hawkins, Bernard Grushkin, J. Stephen Kittelberger, Joo T. Chung, William H. Hollenbaugh, Jr.
  • Patent number: 5427882
    Abstract: A toner composition comprised of pigment, and a polyester imide of the formula ##STR1## wherein n represents the number of monomer segments; X is acetyl or a carbonyl-phthalimido; and R is alkylene, oxyalkylene, or polyoxyalkylene.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: June 27, 1995
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, B. W. Anissa Yeung, T. Brian McAneney, J. Stephen Kittelberger
  • Patent number: 5411829
    Abstract: A toner composition comprised of pigment, and a polyimide of the formulas ##STR1## wherein n represents the number of monomer segments, and R is alkylene, oxyalkylene, or polyoxyalkylene.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: May 2, 1995
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, B. W. Anissa Yeung, T. Brian McAneney, J. Stephen Kittelberger
  • Patent number: 5409793
    Abstract: A toner comprised of pigment, and a polyimide-imine resin of the formula ##STR1## wherein m, and n represent the number of monomer segments; X is independently selected from the group consisting of a tetravalent aromatic, polyarylomatic or cycloaliphatic group with from about 6 to about 20 carbon atoms and a cycloaliphatic group; R is independently selected from the group consisting of alkylene, oxyalkylene and polyoxyalkylene; and R' is independently selected from the group consisting of alkyl, alkylene and arylene.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: April 25, 1995
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, B. W. Anissa Yeung, Melvin D. Croucher, J. Stephen Kittelberger