Granted Patent
Utility
US 5,627,345 · App. 08/198,788
Multilevel interconnect structure
Inventors:
Hiroshi Yamamoto, Tomohiro Ohta, Nobuyuki Takeyasu
Patented Case
View Patent ↗
Granted: May 6, 1997
Filed: Feb 18, 1994
Inventors
Hiroshi Yamamoto
Tomohiro Ohta
Nobuyuki Takeyasu
Assignee (at issue)
Kawasaki Steel 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.