Granted Patent
Utility
US 5,602,185 · App. 08/480,098
Substituted trifluorostyrene compositions
Inventors:
Charles Stone, Alfred E. Steck, Robert Daniel Lousenberg
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Jun 6, 1995
Inventors
Charles Stone
Alfred E. Steck
Robert Daniel Lousenberg
Assignee (at issue)
BALLARD POWER SYSTEMS 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.