Granted Patent
Utility
US 4,660,068 · App. 06/525,570
Substrate structure of semiconductor device and method of manufacturing the same
Inventors:
Kazuhito Sakuma, Yoshinobu Arita, Masaaki Sato, Nobuyoshi Awaya
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Aug 22, 1983
Inventors
Kazuhito Sakuma
Yoshinobu Arita
Masaaki Sato
Nobuyoshi Awaya
Assignee (at issue)
NIPPON TELEGRAPH AND TELEPHONE 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.