Granted Patent
Utility
US 4,789,422 · App. 06/912,388
Aluminum borate fibers
Inventor:
Chanakya Misra
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Sep 26, 1986
Inventor
Chanakya Misra
Assignee (at issue)
Aluminum Company of America
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.