Granted Patent
Utility
US 4,159,205 · App. 05/808,950
Process for producing polycrystalline oxide fibers
Inventors:
Kenichiro Miyahara, Nobuji Nakayama
Patented Case
View Patent ↗
Granted: Jun 26, 1979
Filed: Jun 22, 1977
Inventors
Kenichiro Miyahara
Nobuji Nakayama
Assignee (at issue)
Carborundum 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.