Heat and moisture exchanger and generator
CA 2316394 A1 · Owner: Martin, Robert M. Jr. · Inventors: Smith, Elbert J. Jr.; Martin, Robert M. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is an apparatus (20) for heating and humidifying respiratory gases comprising a housing (28 30), a gas permeable member (38) , and a heat and moisture generating material (36). The housing includes an inlet (22) adapted for connection to a tracheal tube and an outlet (23) , adapted for connection to a tube for conveying respiratory gases. The inlet and the outlet are positioned so that respiratory gases passing through the housing, pass from the inlet to the outlet. The gas permeable member for , example, a conventional heat and moisture exchange element is positioned , within the housing between the inlet and the outlet and is designed to , exchange heat and …
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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 December 21, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2020.
- 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.