Inventor · disambiguated record
Masataka Koga
Also filed as: KOGA MASATAKA
15 granted patents·330 citations·filing 1978–1993
94Inventor score
Files withHITACHI LTD15
Top patents by PatentIndex Score
15 records- 0191US4963735APlasma source mass spectrometerHITACHI LTD·Filed 1989·Granted Oct 16, 1990·48 cites·14 claims
- 0289US5308977APlasma mass spectrometerHITACHI LTD·Filed 1993·Granted May 3, 1994·61 cites·10 claims
- 0385US5086255AMicrowave induced plasma sourceHITACHI LTD·Filed 1990·Granted Feb 4, 1992·45 cites·6 claims
- 0473US5365559AParticle counting apparatus for a total counting of particles contained in a liquid sampleHITACHI LTD·Filed 1993·Granted Nov 15, 1994·40 cites·9 claims
- 0571US4902099ATrace element spectrometry with plasma sourceHITACHI LTD·Filed 1988·Granted Feb 20, 1990·28 cites·6 claims
- 0668US5252827AMethod and apparatus for analysis of gases using plasmaHITACHI LTD·Filed 1991·Granted Oct 12, 1993·21 cites·27 claims
- 0768US5148021AMass spectrometer using plasma ion sourceHITACHI LTD·Filed 1990·Granted Sep 15, 1992·22 cites·14 claims
- 0863US5202562AHigh sensitive element analyzing method and apparatus of the sameHITACHI LTD·Filed 1991·Granted Apr 13, 1993·16 cites·15 claims
- 0960US5164592AMethod and apparatus for mass spectrometric analysisHITACHI LTD·Filed 1990·Granted Nov 17, 1992·15 cites·27 claims
- 1043US5211829AAnalytical method and apparatus using capillary tubeHITACHI LTD·Filed 1991·Granted May 18, 1993·10 cites·20 claims
- 1140US4948250AAtomic absorption spectrophotometerHITACHI LTD·Filed 1984·Granted Aug 14, 1990·7 cites·5 claims
- 1240US4645341ADouble polarized light beam spectrophotometer of light source modulation typeHITACHI LTD·Filed 1984·Granted Feb 24, 1987·7 cites·16 claims
- 1338US5122752AMethod of and apparatus for analyzing granular materialsHITACHI LTD·Filed 1990·Granted Jun 16, 1992·7 cites·19 claims
- 1430US4198589ASpectral source, particularly for atomic absorption spectrometryHITACHI LTD·Filed 1978·Granted Apr 15, 1980·1 cites·17 claims
- 1529US4718763AAtomic absorption spectrophotometerHITACHI LTD·Filed 1986·Granted Jan 12, 1988·2 cites·4 claims
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