Granted Patent
Utility
US 4,656,497 · App. 06/783,717
Trench isolation structures
Inventors:
Steven Rogers, Randall S. Mundt, Denise A. Kaya
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 3, 1985
Inventors
Steven Rogers
Randall S. Mundt
Denise A. Kaya
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.