Volume flow controller
CA 2792164 C · Owner: Air Products And Chemicals, Inc. · Inventors: Downie, Neil Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus comprising a medical device requiring a supply of a gaseous composition comprising a first gas and a second gas; a main circuit for recirculating gas through the medical device and comprising: a circulation pump for pumping gas through the main circuit a gas outlet connected to the medical device a gas inlet connected to the medical device a first supply conduit for supply of gas of a first composition to the main circuit a second supply conduit for supply of gas of a second composition different from said first composition to the main circuit a gas outlet flow controller for controlling the flow of gas to the medical device; a first supply flow controller for controlling the flow …
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 20, 2003 and granted December 3, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 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.