Granted Patent
Utility
US 4,409,389 · App. 06/376,974
Preparation of imidazoles
Inventors:
Michael Bellas, John F. Duvall
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: May 10, 1982
Inventors
Michael Bellas
John F. Duvall
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.