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. 02, 1999
Filed:
Feb. 27, 1998
Applicant:
Inventors:
Assignee:
American Home Products Corporation, Madison, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
548103 ;
Abstract
This application discloses a process for producing 8-[2'-(2(1)-tert-butyl-2H-tetrazol-5-yl) -biphenyl-4-yl-methyl]-2,4-dimethyl-5,8-dihydro-6H-pyrido[2,3-d]pyrimidin- 7-one (or such a compound wherein a benzyl or p-methoxybenzyl group is present in place of the tert-butyl group) or a salt thereof, said process characterized in