Granted Patent
Utility
US 4,863,799 · App. 06/865,717
Sheath core spun organosilicon preceramic fibers and processes for production
Inventors:
Robert M. Mininni, Richard M. Arons
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: May 22, 1986
Inventors
Robert M. Mininni
Richard M. Arons
Assignee (at issue)
Hoechst Celanese 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.