Microcapsule formulations
CA 2342803 C · Owner: Weissmueller, Joachim · Inventors: Weissmueller, Joachim; Wolf, Hilmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New microcapsule formulations of , A) a particulate disperse phase of a) a reaction product of, - at least one diamine polyamine, dialcohol, polyalcohol and/or aminoalcohol with, - an isocyanate mixture characterized in the description if appropriate , as a mixture with toluylene diisocyanate b) at least one agrochemically active compound of a particular group of substances and, c) if appropriate, additives and , B) a liquid aqueous phase, a process for the preparation of these formulations and their use for , applying the , active compounds which they comprise.
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 August 24, 1999 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2021.
- 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.