Plant and process for supplying helium to a plurality of production lines
CA 2279108 A1 · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude · Inventors: Castellanet, Frederic
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Plant (1) for supplying helium to a plurality of production lines (5a, 5b, 5c), comprising a helium source (2) of at least 7000 litres; a network (4) of secondary ducts (4a, 4b, 4c), feeding production lines using helium gas; and a main duct (3, 3a 3b) for, conveying helium, connected upstream to the helium source (2) and downstream to the network (4) of secondary ducts. Use of such a plant (1) in a filling operation for diving gas cylinders, dirigible airship gas bags or safety airbag inflation containers, for quenching metal articles, or for fabricating electronic products or optical fibres.
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 July 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2021.
- 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.