4. Refrigeration
  5. Cryogenic treatment of gas or gas mixture
  6. Separation of gas mixture

L'Air Liquide - Societe Anonyme à Directoire et Conseil de

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High velocity injection of enriched oxygen gas having low...

Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
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Nitrous oxide purification system and process

Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
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Process for removing the fluorocompounds or fluorosulphur...

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Halogenous component
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Process for the MIG welding of aluminum and its alloys with...

Electric heating – Metal heating – Nonatmospheric environment at hot spot
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Process for the treatment of steel work gases

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
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