Granted Patent
Utility
US 4,919,901 · App. 07/140,071
Barrier design for crucibles for silicon dendritic web growth
Inventors:
Raymond G. Seidensticker, Edgar L. Kochka, Charles S. Duncan
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Dec 31, 1987
Inventors
Raymond G. Seidensticker
Edgar L. Kochka
Charles S. Duncan
Assignee (at issue)
Westinghouse Electric Company LLC
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.