Granted Patent
Utility
US 4,379,001 · App. 06/058,417
Method of making semiconductor devices
Inventors:
Tetsushi Sakai, Yoshiji Kobayasi, Yousuke Yamamoto, Hironori Yamauchi
Patented Case
View Patent ↗
Granted: Apr 5, 1983
Filed: Jul 18, 1979
Inventors
Tetsushi Sakai
Yoshiji Kobayasi
Yousuke Yamamoto
Hironori Yamauchi
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.