Detoxification of alkylthioalkylamines with swelling type natural or synthetic clays
CA 2174170 C · Owner: Whitekettle, Wilson K. · Inventors: Whitekettle, Wilson K.; Werner, Michael W.; Petrille, Joseph C. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to methods of detoxifying water containing alkylthioalkylamine compounds. The methods comprise adding to an aqueous system containing alkylthioalkylamines a sufficient, quantity of a swelling type natural or synthetic clay to neutralize the toxicity associated with alkylthioalkylamines to aquatic organisms.
Read the whole patent
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 April 15, 1996 and granted July 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2018.
- 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.