Granted Patent
Utility
US 4,565,866 · App. 06/573,443
Method for the preparation of formamides
Inventors:
Roger G. Duranleau, John F. Knifton, George P. Speranza
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Jan 24, 1984
Inventors
Roger G. Duranleau
John F. Knifton
George P. Speranza
Assignee (at issue)
Texaco Inc.
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.