Granted Patent
Utility
US 4,217,291 · App. 05/972,929
Method of oxidizing osmium (III) and osmium (IV) to a higher valency state
Inventors:
Ching-Yong Wu, Thaddeus P. Kobylinski
Patented Case
View Patent ↗
Granted: Aug 12, 1980
Filed: Dec 26, 1978
Inventors
Ching-Yong Wu
Thaddeus P. Kobylinski
Assignee (at issue)
Gulf Research & Development Company
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.