Granted Patent
Utility
US 4,870,177 · App. 07/134,514
Improved process for producing pure boronic and borinic esters
Inventor:
Herbert C. Brown
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Dec 17, 1987
Inventor
Herbert C. Brown
Assignee (at issue)
Aldrich-Boranes, 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.