Novel 3-halo-5-halomethyl-2-oxazolidinones and their use as microbicides
CA 2126207 C · Owner: Whittemore, Marilyn · Inventors: Del Corral, Luis F.; Whittemore, Marilyn; Rayudu, S. Rao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 3-halo-5-halomethyl-2-oxazolidinones are disclosed having the formula (I), (I), The invention is also directed to a process for making 5-halomethyl-2-oxazolidinones utilizing an alkali cyanate and an epihalohydrin. The substituted oxazolidinone of formula (I) are useful as microbicides and the invention is also directed to a method of using the new compound as a microbicide and for controlling the growth of at least one microorganism in an aqueous system or on a surface.
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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
- Filed September 29, 1992 and granted November 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.