Granted Patent
Utility
US 6,824,907 · App. 10/078,548
Tubular solid oxide fuel cell stack
Inventors:
Partho Sarkar, Hongsang Rho
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Feb 14, 2002
Inventors
Partho Sarkar
Hongsang Rho
Assignee (at issue)
Alberta Research Council Inc.
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.