Granted Patent
Utility
US 5,220,072 · App. 07/855,272
Process of synthesizing chemically and optically pure B-halodiiso-2-ethylapopinocampheylboranes
Inventor:
Herbert C. Brown
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Mar 23, 1992
Inventor
Herbert C. Brown
Assignee (at issue)
Aldrich Chemical Company, 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.