Method for reducing copper solubility at the inner surface of a copper tube
CA 2419630 A1 · Owner: Baukloh, Achim · Inventors: Triquet, Christian; Priggemeyer, Stefan; Reiter, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for reducing copper solubility at the inner surface of a copper tube, the process parameters surface treatment (degreasing and pickling) flow, conditions (flow speed < 1 m/s), temperature (50°C to 80°C) and time (1 min to, min) are purposefully adjusted to one another so as to achieve a uniformly, directed crystal growth during the course of the tin coating. In particular the, planes (101) of the copper crystals and the tin crystals are aligned parallel to, one another and the directions 101 are aligned perpendicular to one another.
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 February 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2025.
- 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.