Inventor · disambiguated record
Masao Siga
Also filed as: SIGA MASAO
20 granted patents·346 citations·filing 1982–1999
96Inventor score
Files withHITACHI LTD20
Top patents by PatentIndex Score
20 records- 0189US5383768ASteam turbine, rotor shaft thereof, and heat resisting steelHITACHI LTD·Filed 1992·Granted Jan 24, 1995·30 cites·23 claims
- 0283US4504554ARotor shaft of steam turbineHITACHI LTD·Filed 1982·Granted Mar 12, 1985·33 cites·16 claims
- 0382US6224334B1Steam turbine, rotor shaft thereof, and heat resisting steelHITACHI LTD·Filed 1997·Granted May 1, 2001·23 cites·10 claims
- 0481US6074169AHigh and low pressure sides-integrating steam turbine, long blades thereof and combined cycle power generation systemHITACHI LTD·Filed 1997·Granted Jun 13, 2000·28 cites·10 claims
- 0581US5536146ACombined generator systemHITACHI LTD·Filed 1994·Granted Jul 16, 1996·15 cites·18 claims
- 0680US5360318ACompressor for gas turbine and gas turbineHITACHI LTD·Filed 1993·Granted Nov 1, 1994·26 cites·11 claims
- 0776US5008072AHeat resistant steel and gas turbine components composed of the sameHITACHI LTD·Filed 1989·Granted Apr 16, 1991·19 cites·15 claims
- 0873US5548174ASteel rotor shafts of electric machinesHITACHI LTD·Filed 1995·Granted Aug 20, 1996·19 cites·12 claims
- 0972US4850187AGas turbine having components composed of heat resistant steelHITACHI LTD·Filed 1987·Granted Jul 25, 1989·28 cites·28 claims
- 1068US5906096ACompressor for turbine and gas turbineHITACHI LTD·Filed 1995·Granted May 25, 1999·17 cites·12 claims
- 1162US4497670ARotor shaft and manufacturing method thereofHITACHI LTD·Filed 1983·Granted Feb 5, 1985·17 cites·14 claims
- 1256US4414024AMartensitic heat-resistant steelHITACHI LTD·Filed 1982·Granted Nov 8, 1983·11 cites·6 claims
- 1354US5288455ASteel for rotor shafts of electric machines and method and product thereofHITACHI LTD·Filed 1992·Granted Feb 22, 1994·9 cites·21 claims
- 1452US6092989ACompressor for turbine and gas turbineHITACHI LTD·Filed 1998·Granted Jul 25, 2000·14 cites·4 claims
- 1549US6182439B1High and low pressure sides-integrating system turbine, long blades thereof and combined cycle power generation systemHITACHI LTD·Filed 1999·Granted Feb 6, 2001·20 cites·7 claims
- 1648US4585478AHeat resisting steelHITACHI LTD·Filed 1984·Granted Apr 29, 1986·8 cites·25 claims
- 1743US5437742ASteel rotor shafts for electric machinesHITACHI LTD·Filed 1993·Granted Aug 1, 1995·5 cites·12 claims
- 1839US5624235ASteam turbine, rotor shaft thereof, and heat resisting steelHITACHI LTD·Filed 1995·Granted Apr 29, 1997·9 cites·29 claims
- 1938US5428953ACombined cycle gas turbine with high temperature alloy, monolithic compressor rotorHITACHI LTD·Filed 1994·Granted Jul 4, 1995·13 cites·8 claims
- 2035US5569338ASteam turbine rotor shaft thereof and heat resisting steelHITACHI LTD·Filed 1995·Granted Oct 29, 1996·2 cites·35 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →