Granted Patent
Utility
US 4,761,388 · App. 06/903,142
In organic fibers containing fine crystals of AlN and Al.sub.2 O.sub.3 and process for their production
Inventors:
Yasuo Oguri, Mitsuru Awata, Hozumi Endo
Patented Case
View Patent ↗
Granted: Aug 2, 1988
Filed: Sep 3, 1986
Inventors
Yasuo Oguri
Mitsuru Awata
Hozumi Endo
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.