Granted Patent
Utility
US 4,942,452 · App. 07/158,673
Lead frame and semiconductor device
Inventors:
Makoto Kitano, Sueo Kawai, Asao Nishimura, Hideo Miura, Akihiro Yaguchi, Chikako Kitabayashi, Ichio Shimizu, Toshio Hatsuda, Toshinori Ozaki, Toshio Hattori, Souji Sakata
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Feb 22, 1988
Inventors
Makoto Kitano
Sueo Kawai
Asao Nishimura
Hideo Miura
Akihiro Yaguchi
Chikako Kitabayashi
Ichio Shimizu
Toshio Hatsuda
Toshinori Ozaki
Toshio Hattori
Souji Sakata
Assignee (at issue)
HITACHI, LTD.
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.