Granted Patent
Utility
US 4,854,936 · App. 07/272,139
Semiconductive ceramic composition and semiconductive ceramic capacitor
Inventors:
Shuichi Ono, Shuichi Itagaki, Masahiro Yahagi, Kiyoshi Furukawa, Shinobu Fujiwara, Yasunobu Oikawa
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Nov 15, 1988
Inventors
Shuichi Ono
Shuichi Itagaki
Masahiro Yahagi
Kiyoshi Furukawa
Shinobu Fujiwara
Yasunobu Oikawa
Assignee (at issue)
TDK 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.