Patents by Inventor Joseph R. Harder

Joseph R. Harder 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).

  • Phosphite additives in polyolefins
    Patent number: 7135511
    Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from a second arylalkyl disphosphite or a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl disphoshite has been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl disphosphite.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: November 14, 2006
    Assignee: Chevron Phillips Chemical Company, L.P.
    Inventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
  • Phosphite additives in polyolefins
    Patent number: 6613823
    Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from the group consisting of a second arylalkyl diphosphite and a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl diphosphite has as been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl diphosphite.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: September 2, 2003
    Assignee: Phillips Petroleum Company
    Inventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
  • Phosphite additives in polyolefins
    Publication number: 20030158306
    Abstract: The whiteness and stability of a polyolefin have been found to be improved upon addition of a first phosphite, an arylalkyl diphosphite, and a second phosphite selected from a second arylalkyl disphosphite or a triarylphosphite. In addition, the addition of a triarylphosphite with an arylalkyl disphoshite has been found to improve the hygroscopic nature and the hydrolytic stability of the arylalkyl disphosphite.
    Type: Application
    Filed: December 17, 2002
    Publication date: August 21, 2003
    Inventors: David R. Battiste, Mark K. Russell, William R. Coutant, Joseph R. Harder
  • Method and apparatus for extruding thermoplastic shape
    Patent number: 4452752
    Abstract: A method and apparatus for continuously cooling a thermoplastic shape having two open sides in which the thermoplastic shape, in its at least partially molten state, is extruded and/or drawn along an elongated form having a contour complimentary to the contour of one side of the two open sides and, simultaneously with moving the thermoplastic shape, at least partially cooling the thermoplastic shape by cooling the form with a liquid cooling medium and drawing a vacuum, on the previously mentioned one side of the two open sides of the thermoplastic shape, through the form.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: June 5, 1984
    Assignee: Phillips Petroleum Company
    Inventors: Joseph R. Harder, James E. Keesling
  • Thermoformable-crosslinkable ethylene polymer sheet per se and in laminate form and thermoformed sheet produced therefrom
    Patent number: 4214030
    Abstract: A sheet of a crosslinkable polymer of ethylene having a melt index of at least 1.5 is supported by a sheet of a polymer having a melt index of 0.9 or less. The support sheet provides support for the sheet of the crosslinkable polymer of ethylene during a thermoforming operation.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: July 22, 1980
    Assignee: Phillips Petroleum Company
    Inventors: James L. Rakes, Joseph R. Harder