Granted Patent
Utility
US 5,470,989 · App. 08/186,000
Process for the production of mixtures of stereoisomers of 8,12-oxido-13,14,15,16-tetranorlabdane
Inventor:
Thomas Gerke
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Jan 18, 1994
Inventor
Thomas Gerke
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.