Inventor · disambiguated record
Shigekazu Nozawa
Also filed as: NOZAWA SHIGEKAZU
18 granted patents·4 pending applications·367 citations·filing 1978–2010
95Inventor score
Files withHITACHI LTD12HITACHI APPLIANCES INC4HITACHI AIR CONDITIONING SYS1HITACHI LTD TRUSTEE FOR THE BE1KATO EISUKE1
Top patents by PatentIndex Score
22 records- 0192US4727725AGas injection system for screw compressorHITACHI LTD·Filed 1986·Granted Mar 1, 1988·94 cites·5 claims
- 0290US7442017B2Displacement type compressor having a self-start synchronous motor and start load reducing meansHITACHI APPLIANCES INC·Filed 2005·Granted Oct 28, 2008·10 cites·3 claims
- 0384US5947709AScroll compressor with oiling mechanismHITACHI LTD·Filed 1997·Granted Sep 7, 1999·36 cites·13 claims
- 0484US5716202AScroll compressor with oiling mechanismHITACHI LTD·Filed 1995·Granted Feb 10, 1998·36 cites·21 claims
- 0583US6506039B1Screw compressorHITACHI LTD·Filed 2001·Granted Jan 14, 2003·24 cites·11 claims
- 0682US6554595B2Compressor with oil-mist separatorHITACHI LTD·Filed 2001·Granted Apr 29, 2003·23 cites·21 claims
- 0778US4913634AScrew compressor with slide valve movement preventing structureHITACHI LTD·Filed 1988·Granted Apr 3, 1990·28 cites·8 claims
- 0876US7163386B2Scroll compressor having a movable auxiliary portion with contact plane of a stopper portion to contact a pane of the fixed scroll through elastic pressure of high pressure fluidHITACHI APPLIANCES INC·Filed 2005·Granted Jan 16, 2007·6 cites·6 claims
- 0972US6422844B2Screw compressorHITACHI AIR CONDITIONING SYS·Filed 2000·Granted Jul 23, 2002·14 cites·6 claims
- 1070US6884049B2Screw compressor and method of manufacturing rotor for the sameHITACHI LTD·Filed 2002·Granted Apr 26, 2005·10 cites·6 claims
- 1168US4234296AScrew compressorHITACHI LTD·Filed 1979·Granted Nov 18, 1980·17 cites·4 claims
- 1263US7501734B2Motor, compressor, and air conditionerHITACHI APPLIANCES INC·Filed 2006·Granted Mar 10, 2009·3 cites·12 claims
- 1363US6183227B1Screw compressorHITACHI LTD·Filed 1999·Granted Feb 6, 2001·25 cites·5 claims
- 1454US2009010776A1Displacement type compressor having a self-start synchronous motor and start load reducing meansHITACHI APPLIANCES INC·Filed 2008·Application pending·0 cites
- 1553US7014437B2Screw compressorHITACHI LTD TRUSTEE FOR THE BE·Filed 2004·Granted Mar 21, 2006·12 cites·6 claims
- 1651US4261180ARefrigeratorHITACHI LTD·Filed 1978·Granted Apr 14, 1981·15 cites·2 claims
- 1750US8241021B2Displacement type compressor having a self-start synchronous motor and start load reducing meansTSUCHIYA TAKESHI·Filed 2010·Granted Aug 14, 2012·0 cites·1 claims
- 1850US6257855B1Screw fluid machineHITACHI LTD·Filed 1999·Granted Jul 10, 2001·10 cites·9 claims
- 1942US6273693B2Screw compressorHITACHI LTD·Filed 2000·Granted Aug 14, 2001·4 cites·2 claims
- 2041US2007003421A1Two-stage screw compressorKATO EISUKE·Filed 2006·Application pending·0 cites
- 2139US2005063852A1Screw compressor and method of manufacturing rotor for the sameFiled 2004·Application pending·0 cites
- 2237US2005180871A1Fluid compressorFiled 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →