Granted Patent
Utility
US 4,374,770 · App. 06/309,664
Process for preparation of aromatic acid chlorides
Inventors:
John A. Hyatt, David S. Kashdan
Patented Case
View Patent ↗
Granted: Feb 22, 1983
Filed: Oct 8, 1981
Inventors
John A. Hyatt
David S. Kashdan
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.