Use of thiadiazole compounds as an antifouling active ingredient
CA 2106287 C · Owner: Ventur, Dirk · Inventors: Ventur, Dirk; Gerigk, Ursula
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to thiadiazole compounds of the type, (see fig. I), wherein, R1, R2 R3 are - hydrogen, - alkyl groups having 1-4 carbon atoms - substituted alkyl groups having 1-4, carbon atoms which are optionally substituted by halogen or an alkoxy, carboxyl hydroxyl, or nitro group, - CN, CF3, halogen or NO2 - COOR where R=H or alkyl groups having 1-4 carbon atoms, which, as a consequence of their properties are, extremely effective biocides having broad antifouling properties and are suitable for biocidal finishing of surfaces in contact with sea water and for protecting these surfaces against colonization by marine organisms. The compounds according to the invention are added to …
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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 15, 1993 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2015.
- 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
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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.