Conduit and method of forming
CA 2488523 C · Owner: Fisher & Paykel Healthcare Limited · Inventors: Patel, Bhavna
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming a double film layered continuous conduit is disclosed. The method includes applying at least one film of ribbon spirally around a former where at least half of each turn of ribbon overlaps the next turn of the ribbon such that the leading and trailing edges overlap. A bead of molten plastic is then applied between the overlap.
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 November 25, 2004 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.