Granted Patent
Utility
US 4,716,233 · App. 06/834,686
Process for preparing phthalimido isoxazoles
Inventors:
Jing Lu, Herbert L. Wehrmeister
Patented Case
View Patent ↗
Granted: Dec 29, 1987
Filed: Feb 28, 1986
Inventors
Jing Lu
Herbert L. Wehrmeister
Assignee (at issue)
International Minerals & Chemical Corp.
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.