Granted Patent
Utility
US 5,543,370 · App. 08/248,388
Composite materials based on boron carbide, titanium diboride and elemental carbon and processes for the preparation of same
Inventors:
Lorenz Sigl, Hubert Thaler, Karl-Alexander Schwetz
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: May 24, 1994
Inventors
Lorenz Sigl
Hubert Thaler
Karl-Alexander Schwetz
Assignee (at issue)
Elektroschmelzwerk Kempten GmbH
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.