Granted Patent
Utility
US 5,420,274 · App. 08/138,858
Process for the preparation of 2,4-di(alkylamino)-6-alkylthio-s-triazines
Inventors:
Henry C. Grace, Mervin Wood
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Oct 19, 1993
Inventors
Henry C. Grace
Mervin Wood
Assignee (at issue)
Ciba-Geigy
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.