Granted Patent
Utility
US 5,220,053 · App. 07/825,055
Preparation of optically active aliphatic carboxylic acids
Inventors:
Azfar A. Choudhury, Abbas Kadkhodayan, Deepak R. Patil
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Jan 24, 1992
Inventors
Azfar A. Choudhury
Abbas Kadkhodayan
Deepak R. Patil
Assignee (at issue)
Ethyl Corporation
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.