Granted Patent
Utility
US 4,845,273 · App. 07/188,113
Carbonylation process for the production of aromatic
Inventors:
Guy R. Steinmetz, Mark Rule
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Apr 25, 1988
Inventors
Guy R. Steinmetz
Mark Rule
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.