Granted Patent
Utility
US 5,117,061 · App. 06/861,823
Process of preparing substituted anilines
Inventor:
Kju H. Shin
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: May 12, 1986
Inventor
Kju H. Shin
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.