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. 30, 1993
Filed:
Feb. 20, 1991
Applicant:
Inventors:
Kazuhiro Takahashi, Kawaguchi, JP;
Yasukazu Nakada, Kawaguchi, JP;
Shigenobu Maruoka, Kawasaki, JP;
Ichiro Tsuchida, Koshigaya, JP;
Takanori Saito, Misato, JP;
Assignee:
Lintec Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430345 ; 430495 ; 430962 ; 252586 ;
Abstract
Disclosed is a photochromic composition comprising an organic photochromic compound and a specific tertiary amine compound which are dissolved or dispersed in a high-molecular compound. Also disclosed are a photochromic film composed of the above photochromic composition and a photochromic laminate having a photochromic layer composed of the above photochromic composition on a surface of a substrate.