Bromate stabilizers for 3-isothiazolones
CA 2068741 A1 · Owner: Petigara, Ramesh B. · Inventors: Petigara, Ramesh B.; Lashen, Edward S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising (a) a 3-isothiazolone compound of the formula wherein R and R1 are independently selected from hydrogen halogen or, R is a (C1-C4) alkyl group and R1 is a halogen or R and R1 may be joined to form an unsaturated 5- or 6-membered carbocyclic ring; Y is hydrogen a (C1-C18) alkyl group, an unsubstitued or halo-substituted alkenyl or alkynyl of 2 to 8 carbon atoms, a cycloalkyl or substituted cycloalkyl of 3 to 12 carbon atoms, an aralkyl or halo- (C1-4) alkyl-, or (C1-C4) alkoxy-, substituted aralkyl of to 10 carbon atoms or an aryl or halo-, (C1-4), alkyl-, or (C1-C4) alkoxy-substituted aryl group of up to 10 carbon atoms; and, (b) an amount of a metal bromate salt …
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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 May 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 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.