Inventor · disambiguated record
Yoshio Yoshioka
Also filed as: TSUKUSHI MASANORI · YOSHIOKA YOSHIO
13 granted patents·173 citations·filing 1974–1991
92Inventor score
Files withHITACHI LTD13
Top patents by PatentIndex Score
13 records- 0187US4562322ASF6 Gas arc extinguishing electric apparatus and process for producing the sameHITACHI LTD·Filed 1984·Granted Dec 31, 1985·30 cites·19 claims
- 0278US4578730AHigh-voltage DC circuit breaker apparatusHITACHI LTD·Filed 1983·Granted Mar 25, 1986·23 cites·4 claims
- 0377US4182942APuffer-type gas-blast circuit breakerHITACHI LTD·Filed 1977·Granted Jan 8, 1980·19 cites·28 claims
- 0470US4132876APuffer type gas circuit breakerHITACHI LTD·Filed 1976·Granted Jan 2, 1979·14 cites·8 claims
- 0568US4160888APuffer-type gas-blast circuit breakerHITACHI LTD·Filed 1977·Granted Jul 10, 1979·15 cites·16 claims
- 0660US4059741APuffer type gas circuit breakerHITACHI LTD·Filed 1976·Granted Nov 22, 1977·10 cites·8 claims
- 0759US4588660AFuel cellHITACHI LTD·Filed 1985·Granted May 13, 1986·22 cites·9 claims
- 0856US3996439APuffer-type gas-blast circuit breakerHITACHI LTD·Filed 1975·Granted Dec 7, 1976·9 cites·11 claims
- 0956US3946184ACircuit breakerHITACHI LTD·Filed 1974·Granted Mar 23, 1976·9 cites·3 claims
- 1055US4105879AMagnetic puffer type gas circuit breakerHITACHI LTD·Filed 1977·Granted Aug 8, 1978·8 cites·15 claims
- 1142US5260728AApparatus for reducing, enlarging and projecting image informationHITACHI LTD·Filed 1991·Granted Nov 9, 1993·8 cites·29 claims
- 1239US4211903AElectromagnetic puffer type gas circuit breakerHITACHI LTD·Filed 1977·Granted Jul 8, 1980·3 cites·7 claims
- 1337US4667072AGas-insulated circuit breakerHITACHI LTD·Filed 1984·Granted May 19, 1987·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →