Granted Patent
Utility
US 4,386,221 · App. 06/315,796
Process for the preparation of aryl alkyl sulfones and aryl vinyl sulfones
Inventors:
John A. Hyatt, Alan W. White
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Oct 28, 1981
Inventors
John A. Hyatt
Alan W. White
Assignee (at issue)
EASTMAN KODAK COMPANY
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.