Granted Patent
Utility
US 5,679,850 · App. 08/735,229
Lithium diisapropylamide
Inventors:
Mark J. Hintze, Wen Jing Quan
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Oct 22, 1996
Inventors
Mark J. Hintze
Wen Jing Quan
Assignee (at issue)
Cyprus Foote Mineral Company
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.