Tubing seal
CA 2441814 C · Owner: Mackay, Alexander Craig · Inventors: Simpson, Neil Andrew Abercrombie; Mackay, Alexander Craig
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 seal between two tubular members (30 32) comprises , providing a first tubular member (30) having an internal surface and an external surface describing a first diameter with a recess (34) in the , external surface at a seal portion of the first tubular member. A deformable circumferentially extending sealing member (36) is located in the recess the , sealing member describing an external diameter no greater than the first diameter. The first tubular member (30) is located within a second tubular member (32) and the seal portion of the first tubular member (30) is expanded such that the sealing member (36) engages an inner surface of the second tubular member …
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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 March 20, 2002 and granted January 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2024.
- 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.