Granted Patent
Utility
US 4,332,782 · App. 06/173,064
Method of producing pseudoboehmite
Inventors:
Julius Scherzer, Anh T. Liu
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Jul 28, 1980
Inventors
Julius Scherzer
Anh T. Liu
Assignee (at issue)
Filtrol Corporation
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.