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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.:

US 5399291 B1

PDFFull Text
Date of Patent:
Mar. 21, 1995

Filed:

Sep. 30, 1993

Liquid crystal compounds having a fluoroether terminal portion

Applicant:
Inventors:

Eugene P Janulis, Mahtomedi, MN (US);

Gilbert C Johnson, Lino Lakes, MN (US);

Marc D Radcliffe, Woodbury, MN (US);

Patricia M Savu, Maplewood, MN (US);

Daniel C Snustad, Mendota Heights, MN (US);

Terence D Spawn, Maplewood, MN (US);

Assignee:

Minnesota Mining and Manufacturing Company, St. Paul, MN (US);

Attorneys:

Griswold; Gary L.

Kirn; Walter N.

Weiss; Lucy C.

Primary Examiner:

Shean Wu

Int. Cl.
CPC ...
C09K / ; C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
25229901 ; 25229961 ; 25229962 ; 25229963 ; 25229967 ; 544298 ; 544335 ; 546270 ; 546315 ; 546322 ; 546326 ; 549369 ; 549374 ; 549380 ; 560 64 ; 560 65 ; 568325 ; 568331 ; 568332 ; 568642 ; 570129 ; 359104 ;
Abstract

Fluorine-containing, chiral and achiral liquid crystal compounds comprise (a) an aliphatic fluorocarbon terminal portion comprising a perfluorinated or partially-fluorinated alkylene group and a terminal hydrocarbon alkyl group, the groups optionally containing at least one catenary ether oxygen atom; (b) an aliphatic hydrocarbon terminal portion; and (c) a central core connecting the terminal portions. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.

Find Patent Forward Citations

Janulis, Eugene. (1995). Liquid crystal compounds having a fluoroether terminal portion (U.S. Patent No. 5399291). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5399291

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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