Pipe fitting comprising at least two layers of different material, the innermost layer made of plastic
CA 2473846 C · Owner: Smahl, Jarmo · Inventors: Smahl, Jarmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipe fitting for connecting at least two pipes the pipe fitting (1) , comprising at least two layers. An innermost layer (2) and an outer layer (3) are of different materials. The innermost layer (2) which gets into contact , the liquid to be conveyed is made of plastic tolerating high temperatures. The outer layer (3) is formed of such materials that the outer surface is arranged to function as the provider of oxygen diffusion protection and/or the UV protector.
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 January 20, 2003 and granted January 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.