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:
Feb. 14, 1995
Filed:
Dec. 11, 1989
Applicant:
Inventors:
Paul J Shannon, Exton, PA (US);
Brian J Swetlin, Wilmington, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
2522991 ; 25229901 ; 359103 ;
Abstract
Liquid crystal coupled dichroic dye compositions comprising a dichroic dye moiety coupled to one or two liquid crystal moieties by a flexible spacer group having at least four atoms linked in a linear fashion; guest-host compositions comprising such liquid crystal coupled dichroic dye compositions dissolved in liquid crystal hosts and devices comprising such guest-host compositions; and liquid crystal coupled aromatic amines useful for forming the liquid crystal coupled dichroic dyes, are disclosed.