Production of brazeable pipes
CA 1319565 C · Owner: Showa Aluminum Corporation · Inventors: Nobusue, Mitsuru; Kodachi, Noboru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing breazeable pipes particularly for use in heat exchangers the process, comprising preparing a brazing sheet which comprises a core sheet coated with a brazing substance at least on one surface, forming a bulged portion of a semicircular cross-section in the central section of the brazing sheet, providing apertures in the bulged portion for securing tube ends therein and rolling, the brazing sheet into a cylinder with its opposite ends being butt jointed to each other.
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 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.