Inventor
YAMADA SEIICHI
13 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA SEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS4816949AMar 28, 1989
Magnetic head containing amorphous alloy and crystallizable glass
HITACHI LTD20 citations79
US5519555AMay 21, 1996
Magnetic head including PbO-V2 O5 -P2 O5 system glass bonding
HITACHI LTD10 citations72
US4794483ADec 27, 1988
Magnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxide
HITACHI LTD11 citations72
US5764129AJun 9, 1998
Ceramic resistor, production method thereof, neutral grounding resistor and circuit breaker
HITACHI LTD12 citations71
US5614138AMar 25, 1997
Method of fabricating non-linear resistor
HITACHI LTD11 citations71
US4565907AJan 21, 1986
Ignition distributor for internal combustion engine
HITACHI LTD4 citations60
US4581501AApr 8, 1986
Ignition distributor for internal combustion engine
HITACHI LTD1 citations51
FUJITSU LTD
3 patentsUS4313026AJan 26, 1982
Multilayer circuit boards
FUJITSU LTD40 citations92
US4045412AAug 30, 1977
Alumina substrate and method of manufacturing same
FUJITSU LTD38 citations91
US4217337AAug 12, 1980
Process for manufacturing an alumina substrate by acid purifying a prefired substrate before final firing
FUJITSU LTD16 citations73