Granted Patent
Utility
US 6,475,657 · App. 09/617,501
Ceramic membrane which is in an oxide ion conductor based on yttrium-stabilized zirconia
Inventors:
Pascal Del Gallo, Guylaine Gouriou
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Jul 17, 2000
Inventors
Pascal Del Gallo
Guylaine Gouriou
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.