Valve construction and method of use
CA 2227147 C · Owner: Abbott Laboratories · Inventors: Alcock, Alan J.; Huang, Tung-Ming; Egan, Karen A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Embodiments described herein provide a valve construction. One embodiment comprises a first valve (12) and a second valve (14). A first fluid conveying conduit (16) fluidly conveying a first fluid is fluidly connected with the first valve (12). A second fluid conveying conduit (18) fluidly conveying a second fluid is fluidly connected with the second valve. A third fluid conveying conduit (22) is fluidly connected with the first valve (12) and the second valve (14). The first valve (12) is movable between a first position where first fluid flows between the first fluid conveying conduit and the third fluid conveying conduit, and a second position where first fluid does not flow …
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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 July 18, 1996 and granted October 24, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2018.
- 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.