Process for coating a workpiece of steel with an anti-corrosive agent
CA 2065694 A1 · Owner: Reinecke, Rudolf · Inventors: Isenberg, Rainer; Herr, Hans Werner; Reinecke, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for coating a workpiece of steel with an anticorrosive agent, comprising the steps of providing the surface of the workpiece with a chemo-mechanical layer and chromatizing the chemo-mechanical layer and charac-, terized by the steps of providing the chromated layer with a further layer containing metallic components and organic binding agents, and curing the further layer by a heat treatment.
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 April 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.