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. 23, 1993
Filed:
Apr. 23, 1990
Applicant:
Inventors:
Joseph H Boyer, New Orleans, LA (US);
Lee R Morgan, New Orleans, LA (US);
Assignee:
Bo-Dekk Ventures, Ltd., New Orleans, LA (US);
Primary Examiner:
Int. Cl.
CPC ...
H61K / ;
U.S. Cl.
CPC ...
514 64 ;
Abstract
A new group of fluorescent organic materials having a variety of uses are described. They are especially useful as dye compounds in dye laser systems, and as photochemical agents in the treatment of sensitive diseased tissues using photodynamic therapy techniques. The materials involve a tri-cyclic compound such as 4,4'-difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene, the disodium salt of 4,4- difluoro-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene-2,6-disulfoni c acid monohydrate, and 4,4-difluoro-1,3,5,7-tetramethyl-8-ethyl-4-bora-3a,4a-diaza-s-indacene, having the following structures: ##STR1##