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. 11, 1992
Filed:
Apr. 04, 1989
Applicant:
Inventors:
James R Sounik, Somerset, NJ (US);
Jacquelyn Popolo, Bergen, NJ (US);
Assignee:
Hoechst Celanese Corp., Somerville, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V / ; G03C / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
252587 ; 430495 ; 430944 ; 540122 ; 540136 ; 540139 ; 540140 ;
Abstract
In one embodiment this invention provides a tetraazaporphyrin dye mixture which exhibits light absorption over a spectrum range of about 660-850 nm, and provides a process for production of the dye mixture. An invention dye mixture has utility in optical recording media, or as a nonlinear optical component in optical light switch or light modulator devices. Illustrative of an invention dye mixture is a blend of dye constituents respectively having varying combinations of phthalocyanine and naphthalocyanine entities in the macrocyclic structures.