Granted Patent
Utility
US 6,605,304 · App. 09/138,219
Silicate-containing powders providing controlled, sustained gas release
Inventors:
Stephen T. Wellinghoff, Joel J. Kampa, Sumner A. Barenberg, Peter N. Gray, Michael Lelah
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Aug 21, 1998
Inventors
Stephen T. Wellinghoff
Joel J. Kampa
Sumner A. Barenberg
Peter N. Gray
Michael Lelah
Assignees (at issue)
Bernard Technologies, Inc.
SOUTHWEST RESEARCH INSTITUTE
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.