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:
Oct. 16, 1990
Filed:
Jun. 13, 1988
Andrew C Harvey, Waltham, MA (US);
Richard W Lusignea, Brighton, MA (US);
James L Racich, Framingham, MA (US);
Dirk M Baars, Brighton, MA (US);
Donald D Bretches, Waynesboro, VA (US);
Robert B Davis, Framingham, MA (US);
Foster Miller, Inc., Waltham, MA (US);
Albany International Research Company, Inc., Mansfield, MA (US);
Abstract
This invention relates in general to the formation of multiaxially (e.g., biaxially) oriented films from high molecular weight lyotropic or thermotropic polymers (homopolymers, copolymers, and the like), wherein due to the processing conditions employed, the films have a controlled molecular orientation. The films of the present invention are preferably prepared from rod-like extended-chain, aromatic- heterocyclic polymers. These polymers generally fall into two classes; first, those that are modified in solution form, i.e., lyotropic liquid crystalline polymers; and second, those that are mod