Granted Patent
Utility
US 4,394,296 · App. 06/289,456
Boron trifluoride-water-silica catalyst
Inventors:
Ajay Madhav Madgavkar, Harold E. Swift
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Aug 3, 1981
Inventors
Ajay Madhav Madgavkar
Harold E. Swift
Assignee (at issue)
Gulf Research & Development 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.