Inventor · disambiguated record
Yoshimi Hakamata
Also filed as: HAKAMATA YOSHIMI
18 granted patents·1 pending application·446 citations·filing 1986–2002
96Inventor score
Files withHITACHI LTD19
Top patents by PatentIndex Score
19 records- 0191US5133825APlasma generating apparatusHITACHI LTD·Filed 1988·Granted Jul 28, 1992·54 cites·8 claims
- 0288US4713585AIon sourceHITACHI LTD·Filed 1986·Granted Dec 15, 1987·42 cites·10 claims
- 0386US4739169AIon sourceHITACHI LTD·Filed 1986·Granted Apr 19, 1988·36 cites·10 claims
- 0483US5852266AVacuum circuit breaker as well as vacuum valve and electric contact used in sameHITACHI LTD·Filed 1997·Granted Dec 22, 1998·32 cites·10 claims
- 0579US6144005AVacuum switch and a vacuum switchgear using the sameHITACHI LTD·Filed 1998·Granted Nov 7, 2000·30 cites·33 claims
- 0679US4851668AIon source application deviceHITACHI LTD·Filed 1987·Granted Jul 25, 1989·27 cites·3 claims
- 0777US6437275B1Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereofHITACHI LTD·Filed 1998·Granted Aug 20, 2002·27 cites·15 claims
- 0876US5612523AVacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereofHITACHI LTD·Filed 1994·Granted Mar 18, 1997·30 cites·1 claims
- 0974US5557083AVacuum circuit breaker and electric contactHITACHI LTD·Filed 1994·Granted Sep 17, 1996·22 cites·31 claims
- 1071US6248969B1Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used thereforHITACHI LTD·Filed 1998·Granted Jun 19, 2001·24 cites·14 claims
- 1170US4847476AIon source deviceHITACHI LTD·Filed 1986·Granted Jul 11, 1989·17 cites·19 claims
- 1268US6048216AVacuum circuit breaker as well as vacuum valve and electric contact used in sameHITACHI LTD·Filed 1998·Granted Apr 11, 2000·18 cites·3 claims
- 1368US5594224AVacuum circuit interrupterHITACHI LTD·Filed 1994·Granted Jan 14, 1997·20 cites·9 claims
- 1463US5697150AMethod forming an electric contact in a vacuum circuit breakerHITACHI LTD·Filed 1995·Granted Dec 16, 1997·17 cites·9 claims
- 1559US6259051B1Vacuum switch and a vacuum switchgear using the sameHITACHI LTD·Filed 2000·Granted Jul 10, 2001·9 cites·12 claims
- 1658US5763848AElectrode for vacuum circuit breakerHITACHI LTD·Filed 1996·Granted Jun 9, 1998·16 cites·16 claims
- 1758US5691521AVacuum circuit breaker with improved contact assemblyHITACHI LTD·Filed 1995·Granted Nov 25, 1997·16 cites·12 claims
- 1851US5349196AIon implanting apparatusHITACHI LTD·Filed 1993·Granted Sep 20, 1994·9 cites·7 claims
- 1936US2002117476A1Vacuum circuit-breaker, vacuum valve for use therein, and electrodes thereofHITACHI LTD·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →