Patents by Inventor April D. Hennis

April D. Hennis 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).

  • Palladium (II) catalyzed polymerization of norbornene and acrylates
    Patent number: 6593440
    Abstract: Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula: [(L)Pd(R)(X)]2, where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 15, 2003
    Assignee: Penn State Research Foundation
    Inventors: Ayusman Sen, Smita Kacker, April D. Hennis, Jennifer D. Polley
  • Catalyst and methods for polymerizing cycloolefins
    Publication number: 20030023013
    Abstract: Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula:
    Type: Application
    Filed: July 16, 2002
    Publication date: January 30, 2003
    Applicant: The B.F.Goodrich Company
    Inventors: John-Henry Lipian, Larry F. Rhodes, Brian L. Goodall, Andrew Bell, Richard A. Mimna, John C. Fondran, Saikumar Jayaraman, April D. Hennis, Christine N. Elia, Jennifer D. Polley, Ayusman Sen
  • Catalyst and methods for polymerizing cycloolefins
    Patent number: 6455650
    Abstract: Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula: [(R′)zM(L′)x(L″)y]b[WCA]d wherein [(R′)zM(L′)x(L″)y] is a cation complex where M represents a Group 10 transition metal; R′ represents an anionic hydrocarbyl containing ligand; L′ represents a Group 15 neutral electron donor ligand; L″ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 4; and [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: September 24, 2002
    Assignees: The B.F. Goodrich Company, The Penn State Research Foundation
    Inventors: John-Henry Lipian, Larry F. Rhodes, Brian L. Goodall, Andrew Bell, Richard A. Mimna, John C. Fondran, Saikumar Jayaraman, April D. Hennis, Christine N. Elia, Jennifer D. Polley, Ayusman Sen
  • CATALYST AND METHODS FOR POLYMERIZING CYCLOOLEFINS
    Publication number: 20020052454
    Abstract: Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula:
    Type: Application
    Filed: October 5, 1999
    Publication date: May 2, 2002
    Inventors: JOHN-HENRY LIPIAN, LARRY F. RHODES, BRIAN L. GOODALL, ANDREW BELL, RICHARD A. MIMNA, JOHN C. FONDRAN, SAIKUMAR JAYARAMAN, APRIL D. HENNIS, CHRISTINE N. ELIA, JENNIFER D. POLLEY, AYUSMAN SEN
  • Palladium (II) catalyzed polymerization of norbornene and acrylates
    Publication number: 20020040115
    Abstract: Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula: [(L)Pd(R)(X)]2, where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.
    Type: Application
    Filed: August 16, 2001
    Publication date: April 4, 2002
    Inventors: Ayusman Sen, Smita Kacker, April D. Hennis, Jennifer D. Polley