Method and apparatus for improving corrosion resistance of chrome plated material
CA 2406404 C · Owner: Industrial Hard Chrome, Ltd. · Inventors: Therkildsen, Charles G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for improving the corrosion resistance of chrome plated materials. After the materials to be chrome plated are mechanically abrasively polished but before they are reverse etched, they are power washed with a high-pressure liquid. A sprayer with nozzles directed inwardly towards the materials directs water onto the material at pressures in the range of 1000 or 2500 to 3000 psi. After the materials are chrome plated they are heated above the melting point of a buffing compound and then the heated materials with the buffing compound applied are buffed. An induction heater is used before or after the buffing compound is applied. Computer controls responsive to operator …
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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 2, 2002 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2024.
- 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.