Inventor · disambiguated record
Seizo Nakano
Also filed as: NAKANO SEIZO · OISHI KAZUAKI
19 granted patents·361 citations·filing 1974–2000
96Inventor score
Files withHITACHI LTD19
Top patents by PatentIndex Score
19 records- 0192US4009458APuffer type gas circuit breakerHITACHI LTD·Filed 1975·Granted Feb 22, 1977·50 cites·6 claims
- 0285US6407900B1Lightning protection system for wind power generation installationHITACHI LTD·Filed 2000·Granted Jun 18, 2002·41 cites·5 claims
- 0379US5444206AStructure of metal container having trunk pipe and branch pipe, and manufacturing method and apparatus thereforHITACHI LTD·Filed 1991·Granted Aug 22, 1995·34 cites·3 claims
- 0477US4032820AHorizontal double plane high voltage switching assemblyHITACHI LTD·Filed 1975·Granted Jun 28, 1977·28 cites·12 claims
- 0574US4403125AGas-insulated disconnecting switchHITACHI LTD·Filed 1981·Granted Sep 6, 1983·19 cites·20 claims
- 0672US4215256AGas-insulated switchgear apparatusHITACHI LTD·Filed 1978·Granted Jul 29, 1980·20 cites·5 claims
- 0770US5498849AStructure of metal container having trunk pipe and branch pipe, and manufacturing method and apparatus thereforHITACHI LTD·Filed 1994·Granted Mar 12, 1996·23 cites·7 claims
- 0870US4045634AGas insulated switch-gear apparatusHITACHI LTD·Filed 1976·Granted Aug 30, 1977·21 cites·7 claims
- 0969US4587592AZinc oxide lightning protectorHITACHI LTD·Filed 1984·Granted May 6, 1986·15 cites·5 claims
- 1069US4207446AGrounded tank type gas circuit breakerHITACHI LTD·Filed 1977·Granted Jun 10, 1980·13 cites·5 claims
- 1168US4237520AGas insulated switch-gear apparatusHITACHI LTD·Filed 1979·Granted Dec 2, 1980·16 cites·8 claims
- 1262US4570202AGas-insulated switchgear equipmentHITACHI LTD·Filed 1982·Granted Feb 11, 1986·16 cites·8 claims
- 1362US3941963ACircuit breakerHITACHI LTD·Filed 1974·Granted Mar 2, 1976·11 cites·6 claims
- 1457US4354220AGas insulated power switch-gear apparatusHITACHI LTD·Filed 1980·Granted Oct 12, 1982·13 cites·7 claims
- 1552US4675773ATransmission line protection systemHITACHI LTD·Filed 1985·Granted Jun 23, 1987·16 cites·9 claims
- 1649US4321651AEnclosed-type zinc-oxide surge arresterHITACHI LTD·Filed 1980·Granted Mar 23, 1982·9 cites·9 claims
- 1742US3943777AOperating apparatus for circuit breakerHITACHI LTD·Filed 1974·Granted Mar 16, 1976·4 cites·5 claims
- 1841US4263491AMethod for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the methodHITACHI LTD·Filed 1978·Granted Apr 21, 1981·4 cites·6 claims
- 1939US4658329AGas-insulated switchgear apparatusHITACHI LTD·Filed 1985·Granted Apr 14, 1987·8 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →