Granted Patent
Utility
US 5,633,253 · App. 08/500,988
Substituted thiosemicarbazonic acid esters
Inventor:
Martin Missbach
Patented Case
View Patent ↗
Granted: May 27, 1997
Filed: Jul 25, 1995
Inventor
Martin Missbach
Assignee (at issue)
Ciby-Geigy 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.