Granted Patent
Utility
US 6,402,813 · App. 09/753,660
Process for purifying a gas by adsorption of the impurities on several active carbons
Inventors:
Christian Monereau, Serge Moreau
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jan 4, 2001
Inventors
Christian Monereau
Serge Moreau
Assignee (at issue)
L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.