Granted Patent
Utility
US 5,973,185 · App. 08/888,380
Method for preparing .alpha.-chloroboronic acids from mannitol
Inventors:
Philip Ma, Biao Jiang
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Jul 7, 1997
Inventors
Philip Ma
Biao Jiang
Assignee (at issue)
Dupont Pharmaceuticals
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.