Granted Patent
Utility
US 5,116,916 · App. 07/150,230
Acid catalyzed reactions
Inventor:
Donald C. Young
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Jan 29, 1988
Inventor
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.