Granted Patent
Utility
US 4,267,397 · App. 06/106,312
Hydration of olefinic compounds with dilute sulfuric acid and cobalt sulfate
Inventors:
Robert J. Schmidt, Tamotsu Imai
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Dec 21, 1979
Inventors
Robert J. Schmidt
Tamotsu Imai
Assignee (at issue)
UOP LLC
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.