Granted Patent
Utility
US 4,268,278 · App. 06/009,579
Inorganic anisotropic hollow fibers
Inventors:
Emerick J. Dobo, Tommy E. Graham
Patented Case
View Patent ↗
Granted: May 19, 1981
Filed: Feb 5, 1979
Inventors
Emerick J. Dobo
Tommy E. Graham
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.