Granted Patent
Utility
US 6,565,821 · App. 09/655,911
Process for removing the fluorocompounds or fluorosulphur compounds from a stream of xenon and/or krypton by permeation
Inventor:
Philippe Fraysse
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Sep 5, 2000
Inventor
Philippe Fraysse
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.