Granted Patent
Utility
US 4,801,760 · App. 07/155,411
Tertiary butyl alcohol purification
Inventor:
Vijai P. Gupta
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Feb 12, 1988
Inventor
Vijai P. Gupta
Assignee (at issue)
Arco Chemical 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.