Patents by Inventor Charles H. Honeyman

Charles H. Honeyman 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).

  • Carrier with ferrocene containing polymer
    Patent number: 6037091
    Abstract: A carrier comprised of a core and thereover a ferrocene containing polymer.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 14, 2000
    Assignee: Xerox Corporation
    Inventors: Paula J. MacLeod, Richard P. N. Veregin, Charles H. Honeyman
  • Coated carrier
    Patent number: 5935750
    Abstract: A carrier comprised of a core and a polymer coating containing a quaternary ammonium salt functionality.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: August 10, 1999
    Assignee: Xerox Corporation
    Inventors: Angelo J. Barbetta, Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Scott M. Silence, K. Derek Henderson, Paula J. MacLeod, Charles H. Honeyman, Thomas E. Enright
  • Synthesis polyphosphazenes with controlled molecular weight and polydisperity
    Patent number: 5914388
    Abstract: A process for the preparation of polyphosphazenes is provided that includes the cationic solution polymerization reaction of a phosphoranimine, using a main group or transition metal halide, or other appropriate halide salt, including a linear phosphazene salt of any chain length, or a preformed non-phosphazene polymer containing a main or transition metal chloride, as an initiator. In a preferred embodiment, triarmed-star polyphosphazenes having the formula N{RN(H)R'.sub.2 P--(N.dbd.PR'.sub.2).sub.n }.sub.3 are prepared via this method. Also, a methods for synthesis of the monomer Cl.sub.3 P.dbd.NSiMe.sub.3 and cyclic trimer N.sub.3 P.sub.3 X.sub.6 from the reactants N(SiR.sub.3).sub.3 and PX.sub.5 are also described.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: June 22, 1999
    Assignee: The Penn State Research Foundation
    Inventors: Harry R. Allcock, Christopher T. Morrissey, Ian Manners, Charles H. Honeyman, James M. Nelson, Chester A. Crane, Scott D. Reeves, A. Paul Primrose, Thomas J. Hartle, R. Prange
  • Synthesis of polyphosphazenes with controlled molecular weight and polydispersity
    Patent number: 5698664
    Abstract: A process for the preparation of polyphosphazenes is provided that includes the cationic solution polymerization reaction of a phosphoranimine, using a main group or transition metal halide, or other appropriate halide salt, including a linear phosphazene salt of any chain length, or a preformed nonphosphazene polymer containing a main or transition metal chloride, as an initiator.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: December 16, 1997
    Assignees: The Penn State Research Foundation, University of Toronto
    Inventors: Harry R. Allcock, Christopher T. Morrissey, Ian Manners, Charles H. Honeyman