Method and device for producing a hollow body by rotation and resulting products
CA 2491315 A1 · Owner: Saint-Gobain Vetrotex France S.A. · Inventors: Voiron, Jacques; Ducret, Christophe; Zanella, Guy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method comprising at least the following steps: introducing at least one first heated composite web into at least one die; introducing simultaneously into said die at least a melt in contact with said first composite web so as to obtain at least a second composite web; winding said second composite web around a support rotating about its axis. The invention also concerns a device for implementing the method and the resulting products.
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 June 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2025.
- 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.