The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
Oct. 02, 2009
Freddy Van Damme, Brugge, BE;
John W. Lyons, Midland, MI (US);
William L. Winniford, Lake Jackson, TX (US);
Alexander W. Degroot, Sugar Land, TX (US);
Matthew D. Miller, Lake Jackson, TX (US);
Freddy Van Damme, Brugge, BE;
John W. Lyons, Midland, MI (US);
William L. Winniford, Lake Jackson, TX (US);
Alexander W. Degroot, Sugar Land, TX (US);
Matthew D. Miller, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A method and apparatus for chromatography of a polyolefin polymer by flowing a solution of the polyolefin polymer through liquid flowing through a graphitic carbon liquid chromatography stationary phase. The method can be used to determine the monomer to comonomer ratio of a polyolefin copolymer such as a copolymer of ethylene and 1-octene or a copolymer of propylene and ethylene.