Granted Patent
Utility
US 6,607,857 · App. 09/871,189
Fuel cell separator plate having controlled fiber orientation and method of manufacture
Inventors:
Richard H. Blunk, Charles L. Tucker, Yeong-Eun Yoo, Daniel Lisi
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: May 31, 2001
Inventors
Richard H. Blunk
Charles L. Tucker
Yeong-Eun Yoo
Daniel Lisi
Assignee (at issue)
General Motors 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.