Low volatility salts
CA 2006114 C · Owner: Burns, Johnny L. · Inventors: Wilson, Richard H.; Burns, Johnny L.
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 amine salts of herbicidally active compounds. The amine is selected from the group consisting of aminopropylmorpholine Jeffamine , D-230, methyldiethanolamine 2-amino-2-ethyl-1,3-propanediol, tris(hydroxymethyl)aminomethane and 2,4,6-tris(dimethylaminomethyl)phenol. The herbicidally active compounds in amine salt form of the present invention have reduced volatility compared with the free-acid form and other salt forms.
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 December 20, 1989 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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.