Granted Patent
Utility
US 5,240,709 · App. 07/742,648
Stabilized solid thiocarbonate compositions and methods for making same
Inventors:
Richard L. Pilling, Donald C. Young
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Aug 6, 1991
Inventors
Richard L. Pilling
Donald C. Young
Assignee (at issue)
Union Oil Company of California
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.