Aqueous emulsions of plant protection agents
CA 1285785 C · Owner: Schumacher, Hans · Inventors: Heinrich, Rudolf; Schumacher, Hans; Albrecht, Konrad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention describes plant protection agents based on aqueous emulsions and, in addition to the active compound containing, as the dispersing agent, an ethylene oxide/ propylene oxide/ethylene oxide block copolymer which is phosphorylated in the alpha-position and the omega-position, or a salt thereof. These formulations have a low solvent content and possess a high stability.
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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- 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.