Thiophosphoric acid amides as nematocides, insecticides and acaricides
CA 1053237 A · Owner: Ciba-Geigy Ag · Inventors: Varsanyi, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thiophosphoric acid amides of the formula wherein R represents the n-propyl or n-butyl radical and A represents the ethylene, 1-methylethylene 1,1-, dimethylethylene, 2-butenylene or 2-pentenylene radical are very effective agents for combating nematodes insects and members of the order acarina.
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
- Granted April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
- 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.