Patents by Inventor Patricia Ann Tooley

Patricia Ann Tooley 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).

  • Ru, Sn/oxide catalyst and process for hydrogenation in acidic aqueous solution
    Patent number: 5985789
    Abstract: Improved hydrogenation catalysts consisting essentially of reduced or at least partially reduced ruthenium and tin on a refractory oxide support which is insoluble in aqueous acid. Such catalysts are very durable and exhibit high conversion rates in aqueous acidic solution hydrogenation of hydrogenatable precursors (e.g. maleic acid, succinic acid, gamma-butyrolactone etc.) and high selectivity for their conversion to 1,4-butanediol and gamma-butyrolactone and their mixtures.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patricia Ann Tooley, Jesse Raymond Black
  • Processibility and lacing resistance when silanized pigments are incorporated in polymers
    Patent number: 5959004
    Abstract: White-pigmented polymers (particularly polyolefins such as polyethylene) containing white pigments treated with at least one silane or a mixture of at least one silane and at least one polysiloxane are disclosed to improve processibility in compounding and improve performance properties such as lacing resistance in a polymeric matrix.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: September 28, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patricia Ann Tooley, Dwight Alan Holtzen, Joseph Anthony Musiano
  • Processibility and lacing resistance when silanized pigments are incorporated in polymers
    Patent number: 5889090
    Abstract: White-pigmented polymers (particularly, polyolefins such as polyethylene) containing white pigments treated with at least one silane or a mixture of at least one silane and at least one polysiloxane are disclosed to improve processibility in compounding and improve performance properties such as lacing resistance in a polymeric matrix.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: March 30, 1999
    Assignee: E. I. duPont deNemours & Company
    Inventors: Patricia Ann Tooley, Dwight Alan Holtzen, Joseph Anthony Musiano