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:
Aug. 31, 1999
Filed:
Dec. 11, 1997
Applicant:
Inventors:
Natalia T Sokoluk, Moscow, RU;
Vladimir V Shubin, Moscow, RU;
Eugene B Levich, Ramat Aviv, IL;
Jacob N Malkin, Ashdod, IL;
Assignee:
Memory Devices, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G03C / ;
U.S. Cl.
CPC ...
43027015 ; 430 19 ; 430 21 ; 430945 ; 430269 ; 365106 ; 365151 ;
Abstract
The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for READ ONLY MEMORY (ROM). More particularly, nonfluorescent peri-phenoxiderivatives of polycyclic quinones are transformed into fluorescent aminoderivatives of anaquinones.