Granted Patent
Utility
US 4,758,418 · App. 06/940,619
Process for combusting solid sulfur-containing material
Inventors:
Jin S. Yoo, John A. Jaecker
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Dec 11, 1986
Inventors
Jin S. Yoo
John A. Jaecker
Assignee (at issue)
Union Carbide 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.