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:
Apr. 12, 2005
Filed:
Jun. 21, 2002
Applicants:
Justin Mark Cowan, Kidderminster, GB;
Christopher John Harris, Worcester, GB;
Michael John Harrison, Stafford, GB;
Inventors:
Justin Mark Cowan, Kidderminster, GB;
Christopher John Harris, Worcester, GB;
Michael John Harrison, Stafford, GB;
Assignee:
Rhodia Consumer Specialties Ltd., Oldbury, GB;
Primary Examiner:
Int. Cl.
CPC ...
C07C009/38 ;
U.S. Cl.
CPC ...
Abstract
In a method for making bisphosphonates by reacting a carbonyl compound with a phosphorus halide, the reaction is carried out in a solvent/carrier system which is a mixture of an amine hydrochloride, phosphorous acid and optionally phosphoric acid.