Apparatus for supplying gases and for the identification of breathing tubes
CA 2850679 C · Owner: Fisher & Paykel Healthcare Limited · Inventors: Quill, Christopher Simon James; Clark, Andrew Baden; Hawkins, Peter Geoffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed is related to an apparatus for supplying gases to a patient, which , utilises a delivery tube with a heating wire within the tube. The technical problem is that using an , apparatus with incorrect heated tubes may lead to electrical malfunction and cause damage to the , apparatus. Solution to the problem through the invention relates to an apparatus for supplying , gases to a patient having a delivery tube with a heating wire and an identification element having , a characteristic impedance and a controller for controlling the heating of the heater wire wherein , the controller is adapted to measure using a measurement voltage of a first polarity the , …
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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 August 19, 2005 and granted October 27, 2020. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2025.
- 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.