Granted Patent
Utility
US 6,484,534 · App. 09/799,735
Process and plant for separating air by cryogenic distillation
Inventor:
Jean-Pierre Tranier
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Mar 7, 2001
Inventor
Jean-Pierre Tranier
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.