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:
Jun. 20, 1989
Filed:
Jun. 16, 1987
Applicant:
Inventors:
Konoe Miura, Yokohama, JP;
Tetsuo Ozawa, Hadano, JP;
Seigo Okumura, Machida, JP;
Hidetoshi Urashima, Kitakyushu, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; G02B / ; G02B / ;
U.S. Cl.
CPC ...
8506 ; 8512 ; 8516 ; 8675 ; 8677 ; 8690 ;
Abstract
A polarizing film which comprises a film base having thereon an anthraquinone dye of general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, an aralkyloxy group, an aryl group, a cyclohexyl group, a 4-alkylcyclohexyl group, a carboxylic acid ester group, a carboxylic acid amide group, a halogen atom, ##STR2## X represents an oxygen atom, a sulfur atom or an amino group.