Inventor · disambiguated record
Rikizo Watanabe
Also filed as: WATANABE RIKIZO
25 granted patents·362 citations·filing 1974–1993
97Inventor score
Top patents by PatentIndex Score
25 records- 0186US5131961AMethod for producing a nickel-base superalloyHITACHI METALS LTD·Filed 1989·Granted Jul 21, 1992·33 cites·4 claims
- 0286US4740354ANickel-base alloys for high-temperature forging dies usable in atmosphereHITACHI METALS LTD·Filed 1986·Granted Apr 26, 1988·35 cites·6 claims
- 0383US4979995AMember made of nickel base alloy having high resistance to stress corrosion cracking and method of producing sameHITACHI LTD·Filed 1989·Granted Dec 25, 1990·30 cites·20 claims
- 0480US3941590APrecipitation hardening Ni base alloyHITACHI METALS LTD·Filed 1974·Granted Mar 2, 1976·18 cites·11 claims
- 0572US5358577AHigh strength and high toughness martensitic stainless steel and method of manufacturing the sameHITACHI METALS LTD·Filed 1993·Granted Oct 25, 1994·17 cites·8 claims
- 0670US5288347AMethod of manufacturing high strength and high toughness stainless steelHITACHI METALS LTD·Filed 1992·Granted Feb 22, 1994·17 cites·4 claims
- 0769US5061440AFerritic heat resisting steel having superior high-temperature strengthHITACHI METALS LTD·Filed 1990·Granted Oct 29, 1991·18 cites·5 claims
- 0868US3937628ASolid-solution strengthened austenitic alloysHITACHI METALS LTD·Filed 1974·Granted Feb 10, 1976·13 cites·10 claims
- 0967US4006015ANi-Cr-W alloysHITACHI METALS LTD·Filed 1975·Granted Feb 1, 1977·14 cites·26 claims
- 1064US4802934ASingle-crystal Ni-based super-heat-resistant alloyHITACHI METALS LTD·Filed 1986·Granted Feb 7, 1989·14 cites·6 claims
- 1164US3976480ANickel base alloyHITACHI METALS LTD·Filed 1974·Granted Aug 24, 1976·9 cites·5 claims
- 1263US6221183B1High-strength and low-thermal-expansion alloy, wire of the alloy and method of manufacturing the alloy wireHITACHI METALS LTD·Filed 1993·Granted Apr 24, 2001·17 cites·12 claims
- 1361US5064610AHeat resistant steel for use as material of engine valveHITACHI METALS LTD·Filed 1990·Granted Nov 12, 1991·14 cites·5 claims
- 1461US4612167ACopper-base alloys for leadframesHITACHI METALS LTD·Filed 1985·Granted Sep 16, 1986·31 cites·8 claims
- 1557US4713576AColor picture tube with shadow maskHITACHI LTD·Filed 1986·Granted Dec 15, 1987·9 cites·9 claims
- 1652US4732733ACopper-base alloys for leadframesHITACHI METALS LTD·Filed 1986·Granted Mar 22, 1988·18 cites·7 claims
- 1750US5141704ANickel-chromium-tungsten base superalloyJAPAN ATOMIC ENERGY RES INST·Filed 1991·Granted Aug 25, 1992·10 cites·1 claims
- 1845US4976791AHeat resistant single crystal nickel-base super alloyHITACHI METALS LTD·Filed 1990·Granted Dec 11, 1990·7 cites·6 claims
- 1944US5026435AHigh strength lead frame material and method of producing the sameHITACHI METALS LTD·Filed 1990·Granted Jun 25, 1991·14 cites·5 claims
- 2043US4464210ANi-Cr-W alloy having improved high temperature fatigue strength and method of producing the sameHITACHI METALS LTD·Filed 1982·Granted Aug 7, 1984·5 cites·8 claims
- 2139US5096514AHeat-resistant ferritic cast steel having excellent thermal fatigue resistanceHITACHI METALS LTD·Filed 1991·Granted Mar 17, 1992·5 cites·6 claims
- 2237US4754188AColor picture tube shadow mask materialHITACHI LTD·Filed 1986·Granted Jun 28, 1988·4 cites·4 claims
- 2336US4882124AAlloys having excellent erosion resistanceAGENCY IND SCIENCE TECHN·Filed 1988·Granted Nov 21, 1989·3 cites·2 claims
- 2434US5147470AHigh strength lead frame material and method of producing the sameHITACHI METALS LTD·Filed 1991·Granted Sep 15, 1992·6 cites·15 claims
- 2530US5096664AAlloys having excellent erosion resistance and stress corrosion cracking resistanceAGENCY IND SCIENCE TECHN·Filed 1991·Granted Mar 17, 1992·1 cites·6 claims
Join the waitlist — get patent alerts
Get an alert when Rikizo Watanabe files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →