Granted Patent
Utility
US 4,032,472 · App. 05/647,231
Manufacture of alumina sol
Inventor:
Kenneth R. McCallister
Patented Case
View Patent ↗
Granted: Jun 28, 1977
Filed: Jan 7, 1976
Inventor
Kenneth R. McCallister
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.