Patents by Inventor Dwight Alan Holtzen

Dwight Alan Holtzen 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).

  • 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
  • Laser marking of fluoropolymer composition
    Patent number: 5789466
    Abstract: Laser marking of pigmented fluoropolymer substrates is enhanced by using titanium dioxide pigment coated with organo silane.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Nicholas Birmingham, Jr., Dwight Alan Holtzen, James Francis Hunt, Robert Sterrett Jenkins, Peter Dwight Spohn, James Thomas Walnock