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:
Jan. 12, 1990
Applicant:
Inventors:
Richard A Earl, Wilmington, DE (US);
Victor J DeNoble, Newark, DE (US);
Assignee:
Du Pont Merck Pharmaceutical Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514256 ; 544294 ;
Abstract
A fluorene compound, 4,4'-[9H-fluoren-9-ylidenebis(methylene)]bispyrimidine, or a pharmaceutically acceptable salt thereof is useful in treating various neurological disorders in mammals. This compound has efficacy over a broad dosage range as measured by hypoxia induced cognition impairment and has a wide safety margin as measured by the ratio of cognition to the onset of overt symptoms.