Expansion valve block with co-ordinated high- and low-pressure circuit control means
CA 2528342 C · Owner: Cannet, Gilles · Inventors: Cannet, Gilles; L'Heveder, Clarisse
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an expansion valve block which is equipped with co-ordinated means (8) for isolating the high-pressure circuit (3) and the low-pressure circuit (4) such that when the gas delivery inlet is opened and closed the two circuits are automatically controlled using the sequence that best guarantees the immunity of the installation.
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 June 18, 2004 and granted April 21, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2026.
- 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.