Improved multicomponent mixtures for use in geological exploration
CA 2270716 A1 · Owner: Cognis Deutschland Gmbh & Co. Kg · Inventors: Foerster, Thomas; Claas, Marcus; Herold, Claus-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention describes pumpable and flowable multicomponent mixtures based on multiphased mixture of water and oil, containing emulsifiers and possibly other emulsifiable and/or dispersible auxiliary agents for use in soil decomposition through drilling and/or further processing of such exploratory drillings. The invention is characterized by the use of emulsifiers or emulsifier systems, which lead to a temperature controlled phase inversion for each multicomponent mixture concerned at a phase inversion temperature (PIT) within a temperature range whose upper limit is below the working temperature of the multicomponent mixture in the area of geological decomposition. As a result …
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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 October 21, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2019.
- 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
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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.