Inventor · disambiguated record
Katsumi Ohsumi
Also filed as: OHSUMI KATSUMI
22 granted patents·1 pending application·443 citations·filing 1978–2002
96Inventor score
Files withHITACHI LTD23
Top patents by PatentIndex Score
23 records- 0189US4828790AInhibition of deposition of radioactive substances on nuclear power plant componentsHITACHI LTD·Filed 1987·Granted May 9, 1989·42 cites·36 claims
- 0288US4820473AMethod of reducing radioactivity in nuclear plantHITACHI LTD·Filed 1985·Granted Apr 11, 1989·32 cites·25 claims
- 0387US6487265B1Treatment method of nuclear reactor internal componentHITACHI LTD·Filed 2000·Granted Nov 26, 2002·17 cites·17 claims
- 0485US4927598ARadioactivity reduction method of a nuclear power plant and a nuclear power plant reduced in radioactivityHITACHI LTD·Filed 1988·Granted May 22, 1990·27 cites·7 claims
- 0583US5715290AReactor water control method in BWR power plant, BWR power plant having low radioactivity concentration reactor water and fuel clad tube for BWRHITACHI LTD·Filed 1994·Granted Feb 3, 1998·28 cites·6 claims
- 0682US4894202AMethod of inhibiting radioactive substances from eluting into cooling water in a nuclear plant and an apparatus thereforHITACHI LTD·Filed 1987·Granted Jan 16, 1990·23 cites·13 claims
- 0781US5398269AWater quality control method and device for nuclear power plant, and nuclear power plantHITACHI LTD·Filed 1993·Granted Mar 14, 1995·24 cites·23 claims
- 0880US4764338AMethod for operating boiling water-type atomic power plantHITACHI LTD·Filed 1985·Granted Aug 16, 1988·21 cites·9 claims
- 0978US4722823ANuclear power plant providing a function of suppressing the deposition of radioactive substanceHITACHI LTD·Filed 1983·Granted Feb 2, 1988·19 cites·28 claims
- 1075US4853638AWater quality control method, and method and apparatus for measuring electrical conductivity used in the water quality controlHITACHI LTD·Filed 1988·Granted Aug 1, 1989·36 cites·15 claims
- 1173US5203984AMonitoring system for plant operation condition and its in-situ electrochemical electrodeHITACHI LTD·Filed 1990·Granted Apr 20, 1993·40 cites·16 claims
- 1272US5398268ANuclear power plant having a water chemistry control system for a primary cooling system thereof and an operation method thereofHITACHI LTD·Filed 1992·Granted Mar 14, 1995·18 cites·23 claims
- 1372US4940564ASuppression of deposition of radioactive substances in boiling water type, nuclear power plantHITACHI LTD·Filed 1987·Granted Jul 10, 1990·16 cites·6 claims
- 1466US4880595AProcess and apparatus for cleaning nuclear reactor cooling waterHITACHI LTD·Filed 1989·Granted Nov 14, 1989·16 cites·4 claims
- 1563US4533514ANuclear reactor degassing method and degassing systemHITACHI LTD·Filed 1981·Granted Aug 6, 1985·13 cites·16 claims
- 1660US4937038ASolution quantitative analysis apparatus, quantitative analysis methods, and nuclear reactor water quality control systemHITACHI LTD·Filed 1988·Granted Jun 26, 1990·17 cites·25 claims
- 1756US5084235ADirect cycle-type atomic power plant with means for suppressing transfer from a liquid phase to a vapor phase of radioactive nitrogen oxidesHITACHI LTD·Filed 1990·Granted Jan 28, 1992·12 cites·12 claims
- 1853US5892805ABoiling water reactor and its operating methodHITACHI LTD·Filed 1996·Granted Apr 6, 1999·18 cites·17 claims
- 1945US2002136344A1Treatment method of nuclear reactor internal componentHITACHI LTD·Filed 2002·Application pending·0 cites
- 2043US4293382AMethod of starting up a nuclear reactorHITACHI LTD·Filed 1978·Granted Oct 6, 1981·6 cites·14 claims
- 2142US4564499AMethod of inhibiting corrosion of carbon steel piping of condensate and feed water systems in power generating plantHITACHI LTD·Filed 1984·Granted Jan 14, 1986·7 cites·19 claims
- 2238US5761263ANuclear fuel rod and method of manufacturing the sameHITACHI LTD·Filed 1995·Granted Jun 2, 1998·4 cites·13 claims
- 2338US5186798ASolution quantitative analysis apparatus, quantitative analysis methods, and nuclear reactor water quality control systemHITACHI LTD·Filed 1990·Granted Feb 16, 1993·7 cites·20 claims
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