Agent and method for machining metal and for cleaning metal or anticorrosion treatment
CA 2339573 A1 · Owner: Olscher, Hans-Peter · Inventors: Geke, Jurgen; Johansson, Anders; Olscher, Hans-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for machining metal while using a watermixed cooling lubricant and to a successive cleaning and/or anticorrosion treatment. The inventive method is characterized in that an oil-in-water emulsion is used as a cooling lubricant. Said oil-in-water emulsion contains: i) an emulsifier system comprised of a) ethoxylates/propoxylates of fatty alcohols with 8 to 18 C-atoms in the alcohol with 2 to 6 ethylene oxide units and 4 to 8 propylene oxide units, and b) fatty alcohols and/or fatty alcohol propoxylates with 12 to 24 C-atoms in the alcohol and 0 to 3 propylene oxide units and/or distillation residue of these fatty alcohols in a weight ratio of a : b = …
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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 July 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 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.