Salts of amino-beta-lactamic acids and process for the preparation thereof
CA 1278568 C · Owner: Biochemie, S.A. · Inventors: Coll, Antonio Luis Palomo; Castellvi, Juan Cabre; Coll, Alberto Palomo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Amino-beta-lactamic acid salts having the formula:, (I), wherein: (X-Y) may form a system having from 1 to 3 carbon atoms, with or without double bond, a) closed in which: X is, an atom selected from among carbon oxygen, nitrogen and sul-, phur; Y is methylene; z is carboxy (-COO) b) open, which may, comprise a double bond in which: X is an atom of hydrogen or, a methyl hydroxymethyl or thiol group, Y is an acid radical chosen from the group formed by sulphonic (-SO3) phosphonic, (-PO3H) or sulphoamidic (-SO2NH2) acid; Z is missing. R is an atom or hydrogen, or a methoxyl or ethoxyl group. R1 is when, present, methyl, acetoxymethyl, acylthiomethyl such as, acetyl and benzoyl derivatives …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2008.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.