Granted Patent
Utility
US 4,676,933 · App. 06/920,826
Method for purification of amido acids
Inventor:
Jiang-Jen Lin
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Oct 20, 1986
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.