Tube made of a profile rolled metal product and method of producing the same
CA 2591683 C · Owner: Smits, Nicole Cornelia Maria Agatha · Inventors: Buerger, Achim; Smits, Nicole Cornelia Maria Agatha; Wittebrood, Adrianus Jacobus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a tube (1) made of a profile rolled metal product, in particular for use in heat exchangers a rolled metal product and , a method of producing the same. The tube (1) includes a first wall (2) and a second wall (4) forming two opposing sides of the tube and a plurality of , reinforcing structures connecting the first and second walls (2 4) and , forming longitudinal passages (10) between them. Each reinforcing structure is formed by a longitudinal ridge (6) on the first wall (2) projecting towards the second wall (4) and a longitudinal ridge (8) on the second wall (4) protecting towards the first wall (2). The ridges (6 8) are joined to each , other at …
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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 4, 2005 and granted December 10, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.