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:
Jul. 19, 1994
Filed:
May. 08, 1992
Applicant:
Inventor:
Chiu P Wong, Woodbury, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264171 ; 2642101 ; 2642105 ;
Abstract
A method of preparing a film includes the steps of mixing a thermotropic liquid crystalline polymer with a host polymer to provide a first material, coextruding the first material with a second material so as to form a film comprising the first and second materials, quenching the film, and orienting the quenched film in at least one direction. The oriented film has an exposed first major surface that includes protrusions resulting from regions of the liquid crystalline polymer in the host polymer.