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. 31, 1991
Filed:
Oct. 27, 1988
Applicant:
Inventors:
Ian R Harrison, State College, PA (US);
George B Klingensmith, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428213 ; 428516 ; 428910 ; 428911 ;
Abstract
A high modulus, high strength coextruded polyolefin composite which can be drawn to higher draw ratios than single sheets of the polymers of which it is made is disclosed. It comprises a core layer of a polymer selected from the group consisting of polypropylene, polyethylene and linear low density polyethylene, and cap layers of a polymer selected from the group consisting of polybutylene homopolymers and copolymers with ethylene.