Inventor · disambiguated record
Masahiko Fujiwara
Also filed as: FUJIWARA MASAHIKO
22 granted patents·1 pending application·593 citations·filing 1984–2007
96Inventor score
Top patents by PatentIndex Score
23 records- 0193US6878339B2NOx-concentration measuring apparatusHORIBA LTD·Filed 2003·Granted Apr 12, 2005·61 cites·6 claims
- 0291US6477284B1Photo-electric combined substrate, optical waveguide and manufacturing process thereforNEC CORP·Filed 2000·Granted Nov 5, 2002·61 cites·11 claims
- 0378US4798435AOptical switch circuitNEC CORP·Filed 1985·Granted Jan 17, 1989·27 cites·17 claims
- 0476US4807227AOptical wavelength-division switching system with coherent optical detection systemNEC CORP·Filed 1987·Granted Feb 21, 1989·45 cites·2 claims
- 0573US8012231B2Particulate matter analyzer, collecting filter and system for analyzing and collecting samples from fluidsHORIBA LTD·Filed 2007·Granted Sep 6, 2011·5 cites·11 claims
- 0672US5904627AGolf club shaftKASCO CORP·Filed 1997·Granted May 18, 1999·52 cites·24 claims
- 0770US5471332AHitless switching apparatus and method for optical networkNEC CORP·Filed 1994·Granted Nov 28, 1995·59 cites·29 claims
- 0869US7254212B2Particulate matter analyzer, collecting filter and system for analyzing and collecting samples from fluidsHORIBA LTD·Filed 2004·Granted Aug 7, 2007·21 cites·23 claims
- 0968US5365344ASystem for transmitting data using wavelength division multiplexingNEC CORP·Filed 1992·Granted Nov 15, 1994·43 cites·11 claims
- 1067US5693945AGas analyzerHORIBA LTD·Filed 1995·Granted Dec 2, 1997·34 cites·10 claims
- 1166US5255072AApparatus for analyzing fluid by multi-fluid modulation modeHORIBA LTD·Filed 1992·Granted Oct 19, 1993·31 cites·10 claims
- 1264US5773828AGas analyzerHORIBA LTD·Filed 1996·Granted Jun 30, 1998·29 cites·16 claims
- 1361US7227642B2Absorbance monitorHORIBA LTD·Filed 2004·Granted Jun 5, 2007·5 cites·15 claims
- 1460US5966676ACalibration-inability warning method in analyzing apparatusHORIBA LTD·Filed 1996·Granted Oct 12, 1999·29 cites·7 claims
- 1559US4808825AFluid analyzerHORIBA LTD·Filed 1986·Granted Feb 28, 1989·18 cites·5 claims
- 1658US5572032AGas analyzer and gas-analyzing mechanismHORIBA LTD·Filed 1994·Granted Nov 5, 1996·20 cites·18 claims
- 1755US6430327B1Optical module and manufacturing method thereofNEC CORP·Filed 2000·Granted Aug 6, 2002·4 cites·14 claims
- 1854US5251275ATunable fiber Fabry-Perot etalon optical filterNEC CORP·Filed 1992·Granted Oct 5, 1993·18 cites·8 claims
- 1953US4778235AOptical switchNEC CORP·Filed 1984·Granted Oct 18, 1988·14 cites·8 claims
- 2039US2003053765A1Photo-electric combined substrateNEC CORP·Filed 2002·Application pending·0 cites
- 2138US5102806AMethod for analyzing fluid by multi-fluid modulation modeHORIBA LTD·Filed 1988·Granted Apr 7, 1992·7 cites·14 claims
- 2235US5780716AGas analyzing apparatusHORIBA LTD·Filed 1996·Granted Jul 14, 1998·5 cites·5 claims
- 2335US4795241ADevice and method for providing optical bistability with free carrier recombination centers introduced into an optical guide surrounding semiconductor layer portionNEC CORP·Filed 1987·Granted Jan 3, 1989·5 cites·6 claims
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