Granted Patent
Utility
US 4,676,967 · App. 06/363,823
High purity silane and silicon production
Inventor:
William C. Breneman
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Mar 31, 1982
Inventor
William C. Breneman
Assignee (at issue)
Union Carbide 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.