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Expired Canadian patentCanada

Method for storing a fuel gas

CA 1075466 A · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Proced Es Georges Claude · Inventors: Bruni, Maurice; Seris, Georges

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A method of storing a fuel gas consisting of a, combustible mixture formed of 15 to 25 mol % acetylene and 85 to 75 mol % ethylene, 15 disclosed. The mixture is stored in a porous material in compressed form under, a pressure of from 15 to 110 bar and at a temperature of -30 to +35°C. The combustible mixture kept in this way is suitable for use in welding, cutting bronze welding, and brazing.

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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

  • Granted April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 15, 1980
Term endedApril 15, 1997
Patent numberCA 1075466 A
Classification (IPC)C10J1/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 15, 1980Term endedApril 15, 1997

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.