Inventor
WATANABE RIKIZO
JP25 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE RIKIZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI METALS LTD
19 patentsUS5131961AJul 21, 1992
Method for producing a nickel-base superalloy
HITACHI METALS LTD33 citations92
US4740354AApr 26, 1988
Nickel-base alloys for high-temperature forging dies usable in atmosphere
HITACHI METALS LTD35 citations91
US4612167ASep 16, 1986
Copper-base alloys for leadframes
HITACHI METALS LTD31 citations86
US5061440AOct 29, 1991
Ferritic heat resisting steel having superior high-temperature strength
HITACHI METALS LTD18 citations82
US3941590AMar 2, 1976
Precipitation hardening Ni base alloy
HITACHI METALS LTD18 citations82
US5358577AOct 25, 1994
High strength and high toughness martensitic stainless steel and method of manufacturing the same
HITACHI METALS LTD17 citations81
US5288347AFeb 22, 1994
Method of manufacturing high strength and high toughness stainless steel
HITACHI METALS LTD17 citations81
US6221183B1Apr 24, 2001
High-strength and low-thermal-expansion alloy, wire of the alloy and method of manufacturing the alloy wire
HITACHI METALS LTD17 citations80
US4732733AMar 22, 1988
Copper-base alloys for leadframes
HITACHI METALS LTD18 citations79
US5064610ANov 12, 1991
Heat resistant steel for use as material of engine valve
HITACHI METALS LTD14 citations74
US3976480AAug 24, 1976
Nickel base alloy
HITACHI METALS LTD9 citations74
US5026435AJun 25, 1991
High strength lead frame material and method of producing the same
HITACHI METALS LTD14 citations73
US4976791ADec 11, 1990
Heat resistant single crystal nickel-base super alloy
HITACHI METALS LTD7 citations73
US4802934AFeb 7, 1989
Single-crystal Ni-based super-heat-resistant alloy
HITACHI METALS LTD14 citations73
US4006015AFeb 1, 1977
Ni-Cr-W alloys
HITACHI METALS LTD14 citations72
US3937628AFeb 10, 1976
Solid-solution strengthened austenitic alloys
HITACHI METALS LTD13 citations70
US5096514AMar 17, 1992
Heat-resistant ferritic cast steel having excellent thermal fatigue resistance
HITACHI METALS LTD5 citations63
US4464210AAug 7, 1984
Ni-Cr-W alloy having improved high temperature fatigue strength and method of producing the same
HITACHI METALS LTD5 citations63
US5147470ASep 15, 1992
High strength lead frame material and method of producing the same
HITACHI METALS LTD6 citations62
HITACHI LTD
3 patentsUS4979995ADec 25, 1990
Member made of nickel base alloy having high resistance to stress corrosion cracking and method of producing same
HITACHI LTD30 citations92
US4713576ADec 15, 1987
Color picture tube with shadow mask
HITACHI LTD9 citations73
US4754188AJun 28, 1988
Color picture tube shadow mask material
HITACHI LTD4 citations62