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ELEKTROCHEMISCHE WERKE GmbH
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ELEKTROCHEMISCHE WERKE GmbH
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Filing date
Publication date
Application filed by ELEKTROCHEMISCHE WERKE GmbHfiledCriticalELEKTROCHEMISCHE WERKE GmbH
Application grantedgrantedCritical
Publication of FR441706ApublicationCriticalpatent/FR441706A/fr
C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B21/00—Nitrogen; Compounds thereof
C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
C01B21/50—Nitrous acid; Salts thereof
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Inorganic Chemistry
(AREA)
Treating Waste Gases
(AREA)
Gas Separation By Absorption
(AREA)
FR441706D1911-05-171912-03-25Procédé pour la production d'azotites purs au moyen de gaz nitreux contenant de l'air ou de l'oxygène
ExpiredFR441706A
(fr)
Procédé et appareil perfectionnés pour la séparation et l'obtention de gaz rares contenant des émanations radio-actives, en partant des gaz naturels