Fin of heat exchanger and method of making it
CA 1284923 C · Owner: Nippondenso Co. Ltd. · Inventors: Shiga, Shoji; Matsuda, Akira; Shibata, Nobuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-exchanger fin is disclosed wherein a Cu-Zn diffused, alloy layer with a Zn content of not less than 1 wt % is formed on at least a portion of the surface of a Cu-based substrate for the fin. For the formation of the Cu-Zn diffused alloy layer Zn is, allowed to diffuse thermally after coating of the surface of a Cu-based substrate with Zn or Zn alloy and processing by rolling, is carried out after the thermal diffusion to finish to the desired size.
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
- Granted June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- 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.