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. 19, 2008
Filed:
Nov. 25, 2002
Applicants:
Lorenzo DE Ferra, Rome, IT;
Stefano Turchetta, Rome, IT;
Pietro Massardo, Rome, IT;
Paolo Casellato, Rome, IT;
Inventors:
Lorenzo De Ferra, Rome, IT;
Stefano Turchetta, Rome, IT;
Pietro Massardo, Rome, IT;
Paolo Casellato, Rome, IT;
Assignee:
Chemi S.p.A., Cinisello Balsamo, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing alendronate sodium includes the reaction of gammabutyric acid with phosphorous acid and phosphorus trichioride and subsequent treatment with an aqueous solution of an alkali metal hydroxide, in which the reaction is conducted in liquid ionic solvents.