Composite tube, method of production for a composite tube and use of a composite tube
CA 2575019 C · Owner: Marturet, Carlos · Inventors: Duester, Hans-Peter; Marturet, Carlos; Jakobi, Dietlinde
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a tube which is particularly well matched to the specific demands imposed in special application areas, such as for example hydropyrolysis the , invention proposes a composite tube having a first part-tube and a second part-tube, in which - one part-tube is arranged in the other part-tube - the first part-tube is a centrifugally cast tube and, - the second part-tube has been produced by pressure treatment from a powder.
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 August 12, 2005 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 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.