Granted Patent
Utility
US 6,547,858 · App. 09/618,866
Hydrogen-permeable metal membrane and hydrogen purification assemblies containing the same
Inventors:
David J. Edlund, William A. Pledger, Todd Studebaker
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Jul 19, 2000
Inventors
David J. Edlund
William A. Pledger
Todd Studebaker
Assignee (at issue)
Idatech, LLC
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.