Method and device for applying a reinforcement to a plastic pipe by way of a wrap welding process
CA 2548267 C · Owner: Neu Drossbach Gmbh · Inventors: Krieger, Hubert; Shaffer, William; Hetzner, Claus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a plastic pipe (1) comprising at least one connecting point (2) for , connection to another plastic pipe (3) or to another connecting piece wherein , the connecting , point (2) has a sealing area. A reinforcement (5) is applied to the connecting point (2) in the , sealing area and substantially or completely prevents the plastic of the connecting point (2) from , creeping in the sealing area. The invention also relates to a method and devices for producing a , corresponding plastic pipe.
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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 September 29, 2004 and granted March 11, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2026.
- 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.