Granted Patent
Utility
US 4,620,949 · App. 06/720,229
Process for amidocarbonylation of cyclic amides
Inventor:
Jiang-Jen Lin
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Apr 5, 1985
Inventor
Jiang-Jen Lin
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.