Granted Patent
Utility
US 4,604,162 · App. 06/812,531
Formation and planarization of silicon-on-insulator structures
Inventor:
Zbigniew P. Sobczak
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Dec 23, 1985
Inventor
Zbigniew P. Sobczak
Assignee (at issue)
NCR 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.