Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Reexamination Certificate
2005-04-12
2005-04-12
Vollano, Jean F. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
C546S022000
Reexamination Certificate
active
06878846
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.
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Cowan Justin Mark
Harris Christopher John
Harrison Michael John
Frishauf Holtz Goodman & Chick P.C.
Rhodia Consumer Specialties Ltd.
Vollano Jean F.
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