Method and device for welding strips of a thermoplastic material
CA 2337416 A1 · Owner: Wehr, Hubert · Inventors: Wehr, Hubert
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 method and a device for welding strips (11a, 11b) of a thermoplastic material. The heat supply required for welding the strips is adjusted according to the thickness (d) of the strips to be welded at the welding point, and is interrupted when a predetermined set point is not reached.
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 May 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2021.
- 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.