Method for the production of a hollow body
CA 2386498 A1 · Owner: Rosch, Fritz · Inventors: Rosch, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the production of a hollow body from aluminium sheet or alloyed aluminium sheet, especially a tank having at least one pipe mounted therein. Said method involves the following steps: preparing at least a cut flat sheet (10); placing at least one pipe (18) on the surfaces of the cut sheet to form inner surfaces of the hollow body being produced; folding and/or superimposing the cut sheet or sheets (10, 12) in such a way that a closed structure with , the exception of the inlet pipe and forming the hollow body by applying high pressure internally via the inlet pipe (18).
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 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2022.
- 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.