Inventor
SHIMIZU SEIKI
JP5 patents
Patents
5 patentsUS4651172AMar 17, 1987
Information recording medium
HITACHI LTD78 citations95
US4497875AFeb 5, 1985
Ceramic substrate with metal plate
HITACHI LTD52 citations95
US4482912ANov 13, 1984
Stacked structure having matrix-fibered composite layers and a metal layer
HITACHI LTD62 citations95
US4546222AOct 8, 1985
Vacuum switch and method of manufacturing the same
HITACHI LTD11 citations73
US4892986AJan 9, 1990
Vacuum circuit breaker
HITACHI LTD14 citations68