Evaporation inhibitor
CA 1318495 C · Owner: Tesmann, Holger · Inventors: Keim, Fritz; Asbeck, Adolf; Bittner, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An evaporation inhibitor having particular use, with spray mixtures of agricultural chemicals applied by the low-volume method, in the form of a paraffincontaining aqueous dispersion or a self-emulsifying solution in an organic solvent, and having the following composition:, from 15 to 50% by weight of a wax or wax mixture from 4 to 20% by weight of at least one nonionic and/or anionic emulsifier, from 19.5 to 81% by weight of water and/or at least one organic solvent from, the group comprising hydrocarbons, esters and ketones having, boiling points of from 70 to 280°C, from 0 to 5.5% by weight of other auxiliaries from 0 to 5.0% by weight of an amine or an alkali metal hydroxide.
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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
- 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.