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:
Nov. 28, 2006
Filed:
Mar. 24, 2005
Peter D. Condo, Lake Elmo, MN (US);
Timothy J. Hebrink, Oakdale, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Andrew T. Ruff, Mendota Heights, MN (US);
Yaoqi J. Liu, Maplewood, MN (US);
Milton H. Andrus, Jr., Woodbury, MN (US);
Peter D. Condo, Lake Elmo, MN (US);
Timothy J. Hebrink, Oakdale, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Andrew T. Ruff, Mendota Heights, MN (US);
Yaoqi J. Liu, Maplewood, MN (US);
Milton H. Andrus, Jr., Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Optical bodies, comprising: a plurality of first optical layers comprising a first polymer composition that comprises (i) a polyester portion having terephthalate comonomer units and ethylene glycol comonomer units; and (ii) a second portion corresponding to a polymer having a glass transition temperature of at least about 130° C.; and a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers. Also disclosed are optical bodies comprising: (a) a plurality of first optical layers, each first optical layer being oriented; and (b) a plurality of second optical layers, disposed in a repeating sequence with the plurality of first optical layers, comprising a blend of polymethylmethacrylate and polyvinylidene fluoride. Methods of making the above-described optical bodies, and articles employing such optical bodies are also provided.