Inventor · disambiguated record
Masahiro Nakagawa
Also filed as: NAKAGAWA MASAHIRO
51 granted patents·13 pending applications·1,116 citations·filing 1980–2025
98Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE17NIKON CORP13MATSUSHITA ELECTRIC INDUSTRIAL CO LTD5YAZAKI CORP4FUKUDA METAL FOIL POWDER2
Top patents by PatentIndex Score
64 records- 0196US4939630AIllumination optical apparatusNIKON CORP·Filed 1988·Granted Jul 3, 1990·115 cites·14 claims
- 0293US5309198ALight exposure systemNIKON CORP·Filed 1993·Granted May 3, 1994·93 cites·20 claims
- 0393US4900620AInk jet recording sheetOJI PAPER CO·Filed 1988·Granted Feb 13, 1990·77 cites·11 claims
- 0492US5754299AInspection apparatus and method for optical system, exposure apparatus provided with the inspection apparatus, and alignment apparatus and optical system thereof applicable to the exposure apparatusNIKON CORP·Filed 1996·Granted May 19, 1998·101 cites·56 claims
- 0591US5680200AInspection apparatus and method for optical system, exposure apparatus provided with the inspection apparatus, and alignment apparatus and optical system thereof applicable to the exposure apparatusNIKON CORP·Filed 1996·Granted Oct 21, 1997·89 cites·34 claims
- 0690US5314659AHard facing chromium-base alloysFUKUDA METAL FOIL POWDER·Filed 1992·Granted May 24, 1994·44 cites·7 claims
- 0787US5783833AMethod and apparatus for alignment with a substrate, using coma imparting opticsNIKON CORP·Filed 1995·Granted Jul 21, 1998·75 cites·19 claims
- 0886US5859707APosition detection apparatus and aligner comprising sameNIKON CORP·Filed 1997·Granted Jan 12, 1999·64 cites·36 claims
- 0984US5184196AProjection exposure apparatusNIKON CORP·Filed 1991·Granted Feb 2, 1993·53 cites·7 claims
- 1080US10025194B2Exposure apparatus, exposure method, and method for producing deviceNIKON CORP·Filed 2016·Granted Jul 17, 2018·1 cites·15 claims
- 1180US5835142ADirect contact type image sensor and its production methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Nov 10, 1998·61 cites·19 claims
- 1280US5126010AInk-jet recording sheetOJI PAPER CO·Filed 1990·Granted Jun 30, 1992·50 cites·4 claims
- 1376US9513558B2Exposure apparatus, exposure method, and method for producing deviceNIKON CORP·Filed 2014·Granted Dec 6, 2016·1 cites·38 claims
- 1476US8749759B2Exposure apparatus, exposure method, and method for producing deviceNIKON CORP·Filed 2012·Granted Jun 10, 2014·1 cites·30 claims
- 1575US5425822AHard facing chromium-base alloysFUKUDA METAL FOIL POWDER·Filed 1993·Granted Jun 20, 1995·20 cites·6 claims
- 1675US2025364735A1ConnectorYAZAKI CORP·Filed 2025·Application pending·0 cites
- 1774US12204291B2Time transmission correction device, time transmission system, and delay measurement methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jan 21, 2025·2 cites·3 claims
- 1874US11722288B2Time synchronization path selection device and time synchronization path selection methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Aug 8, 2023·2 cites·7 claims
- 1971US11742976B2Optical branch insertion device and optical transmission system using optical branch insertion deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Aug 29, 2023·1 cites·13 claims
- 2071US5405809ASemiconductor device, an image sensor device, and methods for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Apr 11, 1995·38 cites·14 claims
- 2170US9883262B2Optical network system, optical switch node, master node, and nodeNIPPON TELEGRAPH & TELEPHONE·Filed 2013·Granted Jan 30, 2018·3 cites·30 claims
- 2267US8235894B2Emotional state determination methodNAKAGAWA MASAHIRO·Filed 2007·Granted Aug 7, 2012·8 cites·17 claims
- 2366US6668075B1Position detection apparatus and methodNIKON CORP·Filed 1999·Granted Dec 23, 2003·42 cites·48 claims
- 2466US5684569APosition detecting apparatus and projection exposure apparatusNIKON CORP·Filed 1994·Granted Nov 4, 1997·21 cites·18 claims
- 2565US5958522AHigh speed thermal spray coating method using copper-based lead bronze alloy and aluminumSULZER METCO JAPAN LTD·Filed 1997·Granted Sep 28, 1999·36 cites·17 claims
- 2665US2018348643A1Exposure apparatus, exposure method, and method for producing deviceNIKON CORP·Filed 2018·Application pending·0 cites
- 2763US5477047ADirect-contact type image sensor device, an image sensor unit, and methods for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Dec 19, 1995·22 cites·71 claims
- 2861US2025260197A1Connector unit and wire harnessYAZAKI CORP·Filed 2024·Application pending·0 cites
- 2957US5096457ALens dyeing method and lens dyeing aparatus: dyeing lenses to give a continuous color density gradientHOYA CORP·Filed 1990·Granted Mar 17, 1992·20 cites·8 claims
- 3056US6942705B2Method of dyeing thermoplastic resin article and colored plastic lens obtainable by that methodHOYA CORP·Filed 2003·Granted Sep 13, 2005·1 cites·16 claims
- 3154US5408121ASemiconductor device, an image sensor device, and methods for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Apr 18, 1995·19 cites·12 claims
- 3252US11705656B2Connecter terminal structureYAZAKI CORP·Filed 2021·Granted Jul 18, 2023·0 cites·2 claims
- 3351US4438738ARocker arm and process for producing the sameTOHO BESLON CO·Filed 1982·Granted Mar 27, 1984·12 cites·22 claims
- 3448US11438857B2Transmission device, time transmission system, and delay measurement methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 6, 2022·0 cites·3 claims
- 3548US2010132601A1Tufting machineNAKAGAWA MFG CO LTD·Filed 2007·Application pending·0 cites
- 3648US2021098919A1Terminal fittingYAZAKI CORP·Filed 2020·Application pending·0 cites
- 3746US11652563B2Optical demultiplexer, optical separation device, optical transmission system, and optical transmission methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 16, 2023·0 cites·8 claims
- 3846US11638228B2Time comparison device and time quality monitoring methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 25, 2023·0 cites·4 claims
- 3945US12191904B2Burst optical relaying device and burst optical relaying methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 7, 2025·0 cites·9 claims
- 4045US2024283557A1Wavelength cross connect device, and wavelength cross connect methodNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4145US2024284079A1Wavelength cross connect device, and wavelength cross connect methodNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4245US2024373152A1Wavelength cross connect device, and wavelength cross connect methodNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4344US11791922B2Transmission device, time transmission system, and delay compensation methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Oct 17, 2023·0 cites·3 claims
- 4443US11251868B2Dispersion compensation system and dispersion compensation methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 15, 2022·0 cites·4 claims
- 4543US4679088AImage sensor with means to adjust capacitance of signal leadsTOSHIBA KK·Filed 1985·Granted Jul 7, 1987·13 cites·16 claims
- 4643US2025337517A1Optical signal processing device, tap coefficient update method, program, and optical signal processing systemNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 4742US11855760B2Transmission device, time transmission system, and delay compensation methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Dec 26, 2023·0 cites·3 claims
- 4842US2009269220A1Electric compressorCALSONIC KANSEI CORP·Filed 2007·Application pending·0 cites
- 4941US11750358B2Time transmission device and transmission methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Sep 5, 2023·0 cites·17 claims
- 5041US6310276B1Plant which belongs to the genus limonium and a method for creating the sameSAKATA SEED CORP·Filed 1998·Granted Oct 30, 2001·0 cites·4 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Masahiro Nakagawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →