Granted Patent
Utility
US 4,348,458 · App. 06/184,878
Coiled inorganic monolithic hollow fibers
Inventor:
Roger S. Otstot
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: Sep 8, 1980
Inventor
Roger S. Otstot
Assignee (at issue)
Monsanto 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.