Inventor
SAKUMA SHINZO
JP30 patents
⚠️ This page may combine multiple inventors who share the name “SAKUMA SHINZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MEIDENSHA ELECTRIC MFG CO LTD
19 patentsUS4077114AMar 7, 1978
Vacuum power interrupter
MEIDENSHA ELECTRIC MFG CO LTD47 citations92
US4394554AJul 19, 1983
Vacuum circuit interrupter
MEIDENSHA ELECTRIC MFG CO LTD28 citations90
US4365127ADec 21, 1982
Vacuum power interrupter
MEIDENSHA ELECTRIC MFG CO LTD13 citations73
US4293748AOct 6, 1981
Vacuum circuit interrupter electrodes
MEIDENSHA ELECTRIC MFG CO LTD7 citations73
US4499349AFeb 12, 1985
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD7 citations72
US4434331AFeb 28, 1984
Vacuum power interrupting device
MEIDENSHA ELECTRIC MFG CO LTD14 citations72
US4431885AFeb 14, 1984
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD8 citations72
US4429197AJan 31, 1984
Vacuum power interrupting device
MEIDENSHA ELECTRIC MFG CO LTD8 citations72
US4421961ADec 20, 1983
Vacuum circuit breaker
MEIDENSHA ELECTRIC MFG CO LTD7 citations72
US4417110ANov 22, 1983
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD8 citations72
US4661666AApr 28, 1987
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD12 citations71
US4481390ANov 6, 1984
Vacuum circuit interrupter
MEIDENSHA ELECTRIC MFG CO LTD10 citations71
US4414448ANov 8, 1983
Vacuum circuit interrupter
MEIDENSHA ELECTRIC MFG CO LTD8 citations71
US4408107AOct 4, 1983
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD16 citations71
US4446346AMay 1, 1984
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD10 citations70
US4707577ANov 17, 1987
Vacuum interrupter
MEIDENSHA ELECTRIC MFG CO LTD14 citations68
US4310735AJan 12, 1982
Arc-shield supporting structure of a vacuum power interrupter
MEIDENSHA ELECTRIC MFG CO LTD4 citations62
US4465991AAug 14, 1984
Operating device for effecting opening and closing operation of a vacuum interrupter with an electromagnet incorporated therein
MEIDENSHA ELECTRIC MFG CO LTD2 citations61
US4410777AOct 18, 1983
Vacuum circuit interrupter
MEIDENSHA ELECTRIC MFG CO LTD5 citations61
OKI ELECTRIC IND CO LTD
9 patentsUS5850362ADec 15, 1998
Semiconductor memory device employing an improved layout of sense amplifiers
OKI ELECTRIC IND CO LTD105 citations97
US5313426AMay 17, 1994
Semiconductor memory device
OKI ELECTRIC IND CO LTD123 citations97
US7154767B2Dec 26, 2006
Method for manufacture of semiconductor device
OKI ELECTRIC IND CO LTD12 citations84
US6781862B2Aug 24, 2004
Semiconductor memory device
OKI ELECTRIC IND CO LTD9 citations73
US7319607B2Jan 15, 2008
Ferroelectric memory
OKI ELECTRIC IND CO LTD4 citations63
US6999336B2Feb 14, 2006
Ferroelectric memory
OKI ELECTRIC IND CO LTD5 citations63
US6870754B2Mar 22, 2005
Ferroelectric memory
OKI ELECTRIC IND CO LTD4 citations63
US7012830B2Mar 14, 2006
Semiconductor memory device
OKI ELECTRIC IND CO LTD2 citations62
US6914799B2Jul 5, 2005
Semiconductor memory device
OKI ELECTRIC IND CO LTD2 citations62