Device for the electrolytic surface treatment of bulk material
CA 2047690 A1 · Owner: Gehring, Johann · Inventors: Birkle, Siegfried; Fischer, Jurgen; Gehring, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For electrodeposition of metal from an electrolyte with a vibrator conveyor the bulk material is transported in a conveying trough which is connected as cathode. According to the invention the conveying, trough (18) is provided with supporting stringpieces (22 to 29) which are intended for the mechanical attachment of the conveying trough (18) on the central pipe (2) as well as for current transmission to the cathode and furthermore serve as electric lead-through through the sidewall (5) of the central pipe (2). The supporting stringpieces (22 to 29) comprise an electrically conducting contact shaft (52) which is electrically insulated from the electrolyte (12) and the central pipe (2). For …
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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 February 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2012.
- 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.