Inventor · disambiguated record
Seiichi Murayama
Also filed as: ITO MASARU · MURAYAMA SEIICHI
44 granted patents·10 pending applications·800 citations·filing 1975–2020
98Inventor score
Top patents by PatentIndex Score
54 records- 0196US4908492AMicrowave plasma production apparatusHITACHI LTD·Filed 1989·Granted Mar 13, 1990·128 cites·5 claims
- 0291US4963735APlasma source mass spectrometerHITACHI LTD·Filed 1989·Granted Oct 16, 1990·48 cites·14 claims
- 0388US4716852AApparatus for thin film formation using photo-induced chemical reactionHITACHI LTD·Filed 1986·Granted Jan 5, 1988·61 cites·16 claims
- 0487US7838845B2Ultraviolet irradiation water treatment apparatusTOSHIBA KK·Filed 2008·Granted Nov 23, 2010·14 cites·8 claims
- 0586US4933602AApparatus for generating light by utilizing microwaveHITACHI LTD·Filed 1988·Granted Jun 12, 1990·35 cites·13 claims
- 0684US5372916AX-ray exposure method with an X-ray mask comprising phase shifter sidewallsHITACHI LTD·Filed 1992·Granted Dec 13, 1994·44 cites·9 claims
- 0782US5034655ACircular fluorescent lampHITACHI LTD·Filed 1989·Granted Jul 23, 1991·30 cites·21 claims
- 0880US6921476B2UV-assisted advanced-ozonation water treatment system and advanced-ozonation moduleTOSHIBA KK·Filed 2003·Granted Jul 26, 2005·23 cites·17 claims
- 0980US4615756ADry etching apparatusHITACHI LTD·Filed 1985·Granted Oct 7, 1986·54 cites·22 claims
- 1079US4678536AMethod of photochemical surface treatmentHITACHI LTD·Filed 1985·Granted Jul 7, 1987·37 cites·4 claims
- 1178US8742365B2Ultraviolet water treatment apparatusABE NORIMITSU·Filed 2011·Granted Jun 3, 2014·3 cites·8 claims
- 1277US7740753B2Ultraviolet radiation water treatment systemTOSHIBA KK·Filed 2008·Granted Jun 22, 2010·5 cites·8 claims
- 1377US4622485ADischarge lamp with neon gas in outer tubeHITACHI LTD·Filed 1985·Granted Nov 11, 1986·22 cites·10 claims
- 1476US4879493ALow-pressure discharge lampHITACHI LTD·Filed 1987·Granted Nov 7, 1989·22 cites·18 claims
- 1575US9873619B2Apparatus for measuring hydroxyl radicals and liquid treatment apparatusTOSHIBA KK·Filed 2013·Granted Jan 23, 2018·2 cites·6 claims
- 1674US4715054APlasma x-ray sourceHITACHI LTD·Filed 1985·Granted Dec 22, 1987·30 cites·6 claims
- 1773US4095142AHigh frequency discharge lamp for a spectral-line sourceHITACHI LTD·Filed 1977·Granted Jun 13, 1978·13 cites·3 claims
- 1872US4643799AMethod of dry etchingHITACHI LTD·Filed 1985·Granted Feb 17, 1987·38 cites·10 claims
- 1971US7820038B2Ultraviolet radiation water treatment systemTOSHIBA KK·Filed 2006·Granted Oct 26, 2010·4 cites·31 claims
- 2071US4902099ATrace element spectrometry with plasma sourceHITACHI LTD·Filed 1988·Granted Feb 20, 1990·28 cites·6 claims
- 2169US4587460AHigh-pressure discharge lamp operating circuitHITACHI LTD·Filed 1984·Granted May 6, 1986·23 cites·6 claims
- 2268US8137542B2Water treatment systemABE NORIMITSU·Filed 2008·Granted Mar 20, 2012·4 cites·5 claims
- 2363US6638421B2Water treatment control system using fluorescence analyzerTOSHIBA KK·Filed 2001·Granted Oct 28, 2003·8 cites·2 claims
- 2462US4097781AAtomic spectrum light source deviceHITACHI LTD·Filed 1975·Granted Jun 27, 1978·9 cites·15 claims
- 2559US4653908AGrazing incidence reflection spectrometerHITACHI LTD·Filed 1984·Granted Mar 31, 1987·16 cites·4 claims
- 2659US4523096ALiquid chromatography apparatusHITACHI LTD·Filed 1982·Granted Jun 11, 1985·8 cites·3 claims
- 2758US4803406AHigh-pressure discharge lamp operating circuitHITACHI LTD·Filed 1985·Granted Feb 7, 1989·17 cites·15 claims
- 2855US2014374618A1Ultraviolet water treatment deviceTOSHIBA KK·Filed 2014·Application pending·0 cites
- 2954US4841556APlasma X-ray sourceHITACHI LTD·Filed 1987·Granted Jun 20, 1989·13 cites·5 claims
- 3053US4642512AStain resistant fluorescent lampHITACHI LTD·Filed 1984·Granted Feb 10, 1987·6 cites·8 claims
- 3153US2011024646A1Ultraviolet irradiation water treatment apparatusTOSHIBA KK·Filed 2010·Application pending·0 cites
- 3252US4611148ALow-pressure mercury vapor discharge lampHITACHI LTD·Filed 1984·Granted Sep 9, 1986·5 cites·9 claims
- 3351US9932250B2Membrane filtration systemTOSHIBA KK·Filed 2015·Granted Apr 3, 2018·0 cites·2 claims
- 3451US2021024388A1Advanced oxidation water treatment system and methodTOSHIBA KK·Filed 2020·Application pending·0 cites
- 3550US4165937AMagneto-optic spectrophotometerHITACHI LTD·Filed 1976·Granted Aug 28, 1979·11 cites·12 claims
- 3649US2006108268A1Water treatment control system using fluorescence analyzerTOSHIBA KK·Filed 2006·Application pending·0 cites
- 3748US7014752B2Water treatment control system for minimizing trihalomethane formationTOSHIBA KK·Filed 2003·Granted Mar 21, 2006·1 cites·2 claims
- 3848US4627086APlasma X-ray sourceHITACHI LTD·Filed 1985·Granted Dec 2, 1986·10 cites·3 claims
- 3946US2012061585A1Ultraviolet water treating apparatusIDE TAKESHI·Filed 2011·Application pending·0 cites
- 4045US2012061300A1Membrane filtration systemMATSUSHIRO TAKESHI·Filed 2011·Application pending·0 cites
- 4145US2018371628A1Device for generating hydrogen peroxideTOSHIBA KK·Filed 2016·Application pending·0 cites
- 4244US10112125B2Treatment method for used ion exchange resinTOSHIBA KK·Filed 2016·Granted Oct 30, 2018·0 cites·7 claims
- 4344US2020055754A1Water treatment apparatus, water treatment system and water treatment methodTOSHIBA KK·Filed 2017·Application pending·0 cites
- 4442US2021179455A1Hydrogen peroxide water manufacturing deviceTOSHIBA KK·Filed 2018·Application pending·0 cites
- 4542US2021002150A1Water treatment systemTOSHIBA KK·Filed 2018·Application pending·0 cites
- 4641US4803401ACompact fluorescent lampHITACHI LTD·Filed 1986·Granted Feb 7, 1989·4 cites·11 claims
- 4741US4587453ALow-pressure mercury vapor discharge lampHITACHI LTD·Filed 1983·Granted May 6, 1986·3 cites·5 claims
- 4839US4298284AMethod and apparatus for measuring magnetooptic anisotropyHITACHI LTD·Filed 1978·Granted Nov 3, 1981·6 cites·2 claims
- 4938US4166697ASpectrophotometer employing magneto-optic effectHITACHI LTD·Filed 1977·Granted Sep 4, 1979·5 cites·6 claims
- 5036US4622493AHigh intensity ultraviolet light sourceHITACHI LTD·Filed 1983·Granted Nov 11, 1986·2 cites·9 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →