Patents by Inventor William Coutant

William Coutant 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).

  • Olefin polymers, method of making, and use thereof
    Publication number: 20060079656
    Abstract: The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.
    Type: Application
    Filed: September 15, 2005
    Publication date: April 13, 2006
    Inventors: Paul DesLauriers, Max McDaniel, Al Wolfe, Pamela Maeger, William Coutant, David Rohlfing, Steven Secora, William Beaulieu, Elizabeth Benham, David Register
  • Olefin polymers, method of making, and use thereof
    Publication number: 20050154159
    Abstract: The present invention is directed to PE-100 ethylene copolymers and pipe made thereof having a Tabor abrasion between about 0.01 and about 0.001 grams lost/1000 revolutions. These copolymers are formed by contacting ethylene with at least one mono-1-olefin comonomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. Additionally, the comonomers may be selected from mono-1-olefins having 4 to 10 carbon atoms, such as, 1-hexene, 1-butene, 4-methyl-1-pentene, 1-octene, and 1-decene. Further, these ethylene copolymers may be employed to produce PE-100 pipe having both small diameters and diameters in excess of 42 inches substantially without sagging or other gravitational deformation. Copolymers of ethylene and 1-hexene are disclosed which are used to produce PE-100 pipe.
    Type: Application
    Filed: January 9, 2004
    Publication date: July 14, 2005
    Inventors: Paul DesLauriers, Max McDaniel, Al Wolfe, Pamela Maeger, William Coutant, David Rohlfing, Steven Secora, William Beaulieu, Elizabeth Benham, David Register
  • Phosphite additives in polyolefins
    Publication number: 20050113494
    Abstract: The whiteness and stability after processing of a polyolefin have been found to be improved upon the addition of a combination of at least one high activity phosphite and at least one hydrolytically stable phosphite.
    Type: Application
    Filed: November 21, 2003
    Publication date: May 26, 2005
    Inventors: Rex Bobsein, Bryan Hauger, William Coutant, John Rathman