Granted Patent
Utility
US 5,679,828 · App. 08/463,071
Betulinic acid and dihydrobetulinic acid derivatives and uses therefor
Inventors:
Kuo-Hsiung Lee, Yoshiki Kashiwada, Fumio Hashimoto, Louis Mark Cosentino, Mark Manak
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jun 5, 1995
Inventors
Kuo-Hsiung Lee
Yoshiki Kashiwada
Fumio Hashimoto
Louis Mark Cosentino
Mark Manak
Assignees (at issue)
Biotech Research Labs, Inc.
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
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.