Granted Patent
Utility
US 4,636,574 · App. 06/794,855
Process for preparing arylisothiocyanates
Inventor:
Kju H. Shin
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 4, 1985
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.