Granted Patent
Utility
US 5,175,331 · App. 07/809,430
Process for preparation of organosilicon halides
Inventors:
Won S. Park, William R. Beard
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Dec 18, 1991
Inventors
Won S. Park
William R. Beard
Assignee (at issue)
Ethyl Corporation
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.