Inventor · disambiguated record
Naofumi Tada
Also filed as: AIHARA KATSUZO · TADA NAOFUMI
15 granted patents·260 citations·filing 1978–1995
93Inventor score
Files withHITACHI LTD15
Top patents by PatentIndex Score
15 records- 0189US5215015ATrack system and vehicle having both magnetic and aerodynamic levitation, with wings on the vehicle carrying the whole weight at normal operating speedsHITACHI LTD·Filed 1992·Granted Jun 1, 1993·62 cites·30 claims
- 0286US4692560AForced flow cooling-type superconducting coil apparatusHITACHI LTD·Filed 1986·Granted Sep 8, 1987·41 cites·10 claims
- 0382US4652697AAluminum-stabilized superconducting wireHITACHI LTD·Filed 1984·Granted Mar 24, 1987·39 cites·2 claims
- 0474US5094173ASuperconducting magnetic levitated train, train system method of controlling the same, and superconducting coil for magnetic levitated trainHITACHI LTD·Filed 1991·Granted Mar 10, 1992·34 cites·12 claims
- 0571US4218668ASuperconductive magnet deviceHITACHI LTD·Filed 1978·Granted Aug 19, 1980·16 cites·18 claims
- 0663US4752654AIntermetallic compound-based, composite superconductorHITACHI LTD·Filed 1986·Granted Jun 21, 1988·19 cites·6 claims
- 0759US5189386AAluminum-stabilized superconductor and superconducting coil, and method of manufacturing the superconductorHITACHI LTD·Filed 1991·Granted Feb 23, 1993·21 cites·32 claims
- 0838US5628835ANb3 Al Group superconductor containing ultrafine Nb2 Al particlesHITACHI LTD·Filed 1993·Granted May 13, 1997·5 cites·2 claims
- 0937US4870379ASuperconducting switching deviceHITACHI LTD·Filed 1988·Granted Sep 26, 1989·6 cites·5 claims
- 1037US4334123AInternal cooling type superconductorHITACHI LTD·Filed 1980·Granted Jun 8, 1982·5 cites·9 claims
- 1133US4560404AMethod of producing material for superconductorHITACHI LTD·Filed 1984·Granted Dec 24, 1985·3 cites·9 claims
- 1232US5396205AUnspliced superconducting coil device with high stabilityHITACHI LTD·Filed 1992·Granted Mar 7, 1995·3 cites·4 claims
- 1331US5620532AMethod for manufacturing Nb3 Al group superconductorHITACHI LTD·Filed 1995·Granted Apr 15, 1997·2 cites·4 claims
- 1431US5105177ASuperconducting magnet apparatus, cooling system therefor, and electromagnetic levitation traveling equipment incorporating the sameHITACHI LTD·Filed 1989·Granted Apr 14, 1992·3 cites·9 claims
- 1531US4468646ASuperconducting magnet deviceHITACHI LTD·Filed 1982·Granted Aug 28, 1984·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →