Granted Patent
Utility
US 5,283,350 · App. 07/966,041
Aryl esters of phosphonous halides and a process for the preparation thereof
Inventors:
Manfred Bohshar, Hans-Jerg Kleiner
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Dec 30, 1992
Inventors
Manfred Bohshar
Hans-Jerg Kleiner
Assignee (at issue)
Hoechst GmbH
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.