Granted Patent
Utility
US 6,046,243 · App. 08/858,860
Compositions for sustained release of a gas
Inventors:
Stephen T. Wellinghoff, Sumner A. Barenberg, Joel J. Kampa, Darren E. Barlow
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: May 19, 1997
Inventors
Stephen T. Wellinghoff
Sumner A. Barenberg
Joel J. Kampa
Darren E. Barlow
Assignee (at issue)
Bernard Technologies, 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.