Expanding a tubular element to different inner diameters
CA 2532165 C · Owner: Schilte, Paul Dirk · Inventors: Zijsling, Djurre Hans; Schilte, Paul Dirk; Lohbeck, Wilhelmus Christianus Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of expanding a tubular element (32) is provided the tubular element , having a first portion to be expanded to a first inner diameter and a second portion to be expanded to a second inner diameter larger than the first inner diameter. The method comprises: a) arranging an expandable sleeve (36) of selected wall thickness in said second tubular element portion; b) positioning an expander (1) in the tubular element; c) operating the expander so as to expand said first tubular element portion to the first inner diameter and , operating the expander so as to expand the sleeve to an inner diameter substantially equal to the second inner diameter minus double the wall thickness of …
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 July 6, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 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.