Patents by Inventor Ronald E. MacLeay

Ronald E. MacLeay 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).

  • Azo monomer useful in polymerization systems
    Patent number: 4218370
    Abstract: An unsymmetrical azo monomer contains t-alkyl, t-cycloalkyl, or t-aralkyl moiety and one polymerizable double bond. This compound is useful in polymerization and crosslinking systems.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: August 19, 1980
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Peroxide free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 4129586
    Abstract: Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: December 12, 1978
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Azo free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 4055714
    Abstract: Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: October 25, 1977
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Azo-peroxide free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 4045427
    Abstract: Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: August 30, 1977
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Bisazo free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 4045426
    Abstract: Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: March 4, 1976
    Date of Patent: August 30, 1977
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Peroxide free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 4042773
    Abstract: Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: August 16, 1977
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay
  • Azo free radical initiators containing ultraviolet light stabilizing groups
    Patent number: 3956269
    Abstract: Compounds which contain azo linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
    Type: Grant
    Filed: January 22, 1974
    Date of Patent: May 11, 1976
    Assignee: Pennwalt Corporation
    Inventors: Chester S. Sheppard, Ronald E. MacLeay