Method and apparatus for processing wastes from the machining of ferromagnetic materials
CA 2085675 A1 · Owner: Heck, Alfred · Inventors: Heck, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for processing wastes from the machining of ferromagnetic materials in which the wastes are mixed with a washing solution in a first tank and oil or oil-andwater emulsion adhering to the wastes is dissolved. Ferromagnetic components of the wastes are then separated from the washing solution in the first tank by means of a magnetic field, and non-magnetic components are then subjected to a washing in a following second tank. The ferromagnetic components are fed to an additional tank where they are washed again. The separated and degreased components are then filtered out of the washing liquids using suitable filtering apparatus.
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 December 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2014.
- 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.