Granted Patent
Utility
US 4,366,321 · App. 06/257,450
Preparation of 2-halo-3-nitro-5-acyl thiophenes and intermediate compounds
Inventors:
Leslie Shuttleworth, David Mullen
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Apr 24, 1981
Inventors
Leslie Shuttleworth
David Mullen
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.