Granted Patent
Utility
US 4,448,968 · App. 06/351,095
Process for the preparation of 1,3,4-thiadiazolone derivatives
Inventor:
Haukur Kristinsson
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Feb 23, 1982
Inventor
Haukur Kristinsson
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.