Patents by Inventor Thomas E. Conetta

Thomas E. Conetta 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).

  • Substituted piperazinone light stabilizers
    Patent number: 4753979
    Abstract: Compounds of the formula (T).sub.g -E where T is a substituted 4-acyl-2-piperazinone group, g is 1 or 2 and E is a selected terminal or linking group, are effective light stabilizers for polyolefins and other organic polymers, particularly thermoset acrylic or alkyd acrylic resins.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: June 28, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Thomas E. Conetta, Roger F. Malherbe, Roland A. E. Winter
  • Substituted piperazinone light stabilizers
    Patent number: 4650870
    Abstract: Compounds of the formula (T).sub.g -E where T is a substituted 4-acyl-2-piperazinone group, g is 1 or 2 and E is a selected terminal or linking group, are effective light stabilizers for polyolefins and other organic polymers.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: March 17, 1987
    Assignee: Ciba-Geigy Corporation
    Inventors: Thomas E. Conetta, Roger F. Malherbe, Roland A. E. Winter