Inventor · disambiguated record
Yoshitaro Ishii
Also filed as: ISHII YOSHITARO
24 granted patents·1 pending application·972 citations·filing 1982–2002
97Inventor score
Files withHITACHI LTD24
Top patents by PatentIndex Score
25 records- 0196US5110266AElectric blower having improved return passage for discharged air flowHITACHI LTD·Filed 1990·Granted May 5, 1992·138 cites·8 claims
- 0296US4880474AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1987·Granted Nov 14, 1989·125 cites·9 claims
- 0394US5243732AVacuum cleaner with fuzzy logic controlHITACHI LTD·Filed 1991·Granted Sep 14, 1993·142 cites·16 claims
- 0494US4446594AUpright type electric cleanerHITACHI LTD·Filed 1982·Granted May 8, 1984·91 cites·5 claims
- 0586US5042844AHose fixture deviceHITACHI LTD·Filed 1989·Granted Aug 27, 1991·66 cites·16 claims
- 0684US4809394AVacuum cleaner having a blower facility structureHITACHI LTD·Filed 1987·Granted Mar 7, 1989·54 cites·9 claims
- 0782US4958406AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1988·Granted Sep 25, 1990·41 cites·10 claims
- 0877US5216778AVacuum cleanerHITACHI LTD·Filed 1992·Granted Jun 8, 1993·48 cites·12 claims
- 0975US5294872AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1990·Granted Mar 15, 1994·25 cites·7 claims
- 1072US5166585AMotor control apparatus for an electric vacuum cleanerHITACHI LTD·Filed 1991·Granted Nov 24, 1992·28 cites·33 claims
- 1172US4905341AUpright-type electric vacuum cleanerHITACHI LTD·Filed 1986·Granted Mar 6, 1990·31 cites·9 claims
- 1271US4983895AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1989·Granted Jan 8, 1991·25 cites·2 claims
- 1362US6549731B1Image forming apparatusHITACHI LTD·Filed 2000·Granted Apr 15, 2003·8 cites·4 claims
- 1459US6661994B2Electrophotographic image forming systemHITACHI LTD·Filed 2002·Granted Dec 9, 2003·6 cites·5 claims
- 1559US5381584AVacuum cleanerHITACHI LTD·Filed 1993·Granted Jan 17, 1995·27 cites·18 claims
- 1657US5003663AUpright-type electric vacuum cleanerHITACHI LTD·Filed 1988·Granted Apr 2, 1991·22 cites·2 claims
- 1754US4912593AElectrical applianceHITACHI LTD·Filed 1988·Granted Mar 27, 1990·20 cites·4 claims
- 1853US6125250ADeveloping device, developing method, and an image forming apparatusHITACHI LTD·Filed 1998·Granted Sep 26, 2000·12 cites·8 claims
- 1951US5075607AMethod and apparatus for operating vacuum cleanerHITACHI LTD·Filed 1990·Granted Dec 24, 1991·10 cites·8 claims
- 2051US4955105AVacuum cleanerHITACHI LTD·Filed 1988·Granted Sep 11, 1990·20 cites·30 claims
- 2145US4893376AUpright-type electric vacuum cleanerHITACHI LTD·Filed 1988·Granted Jan 16, 1990·11 cites·2 claims
- 2240US5155885AVacuum cleaner and method for operating the sameHITACHI LTD·Filed 1989·Granted Oct 20, 1992·12 cites·12 claims
- 2334USD302878SElectric vacuum cleanerHITACHI LTD·Filed 1987·Granted Aug 15, 1989·1 cites·1 claims
- 2434US2002025201A1Electrophotographic image forming systemFiled 2001·Application pending·0 cites
- 2533US5027469AVacuum cleanerHITACHI LTD·Filed 1990·Granted Jul 2, 1991·9 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →