Inventor · disambiguated record
Masaaki Nakayama
Also filed as: NAKAYAMA MASAAKI
112 granted patents·13 pending applications·1,886 citations·filing 1977–2025
99Inventor score
Files withROHM CO LTD27MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16MITSUBISHI MATERIALS CORP12DENSO CORP10NIPPON DENSO CO10
Top patents by PatentIndex Score
125 records- 0195US7781043B2Disk roll and base material for disk rollNICHIAS CORP·Filed 2007·Granted Aug 24, 2010·26 cites·2 claims
- 0294US6073440ASystem for detecting deterioration of catalyst for purifying exhaust gasDENSO CORP·Filed 1997·Granted Jun 13, 2000·66 cites·23 claims
- 0394US5672817ASelf-diagnostic apparatus of air-fuel ratio control system of internal combustion engineNIPPON DENSO CO·Filed 1995·Granted Sep 30, 1997·75 cites·26 claims
- 0493US6247464B1Blow-by gas passage abnormality detecting system for internal combustion enginesDENSO CORP·Filed 2000·Granted Jun 19, 2001·33 cites·7 claims
- 0592US11758629B2Load drive deviceROHM CO LTD·Filed 2022·Granted Sep 12, 2023·1 cites·24 claims
- 0691US6023651AInternal combustion engine misfire detection with engine acceleration and deceleration correction during a repetitive misfire conditionDENSO CORP·Filed 1997·Granted Feb 8, 2000·62 cites·12 claims
- 0791US5986705AExposure control system controlling a solid state image sensing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 16, 1999·180 cites·4 claims
- 0890US8827883B2Base material for disk, process for producing the same, and disk rollHORIUCHI OSAMU·Filed 2011·Granted Sep 9, 2014·7 cites·5 claims
- 0988US11172556B2Light emitting element drive deviceROHM CO LTD·Filed 2020·Granted Nov 9, 2021·2 cites·10 claims
- 1088US8754579B2LED driving device, illuminator, and Liquid Crystal Display deviceKANEMITSU RYOSUKE·Filed 2012·Granted Jun 17, 2014·9 cites·8 claims
- 1187US10068511B2LED driving device, illuminator, and liquid crystal display deviceROHM CO LTD·Filed 2017·Granted Sep 4, 2018·4 cites·16 claims
- 1287US7653266B2Image pickup apparatus, solid-state imaging device, and image generating methodPANASONIC CORP·Filed 2006·Granted Jan 26, 2010·9 cites·14 claims
- 1387US6463735B2Apparatus for detecting deterioration of exhaust gas purifying catalystsDENSO CORP·Filed 2001·Granted Oct 15, 2002·35 cites·22 claims
- 1486US11919441B2Lamp control deviceROHM CO LTD·Filed 2019·Granted Mar 5, 2024·3 cites·13 claims
- 1586US10194499B2Lighting deviceROHM CO LTD·Filed 2018·Granted Jan 29, 2019·3 cites·16 claims
- 1686US9686836B2LED driving device, illuminator, and liquid crystal display deviceROHM CO LTD·Filed 2016·Granted Jun 20, 2017·4 cites·9 claims
- 1786US7466358B1Solid-state imaging device for enlargement of dynamic rangePANASONIC CORP·Filed 2000·Granted Dec 16, 2008·29 cites·21 claims
- 1885US11089663B2Light-emitting element driving deviceROHM CO LTD·Filed 2020·Granted Aug 10, 2021·3 cites·10 claims
- 1985US8216776B2Dialysate of peritoneal dialysis and its preparation methodSAKAI ASAHI·Filed 2010·Granted Jul 10, 2012·8 cites·1 claims
- 2085US5631025ALow sodium peritoneal dialysis solutionBAXTER INT·Filed 1995·Granted May 20, 1997·57 cites·10 claims
- 2185US5589197ALow sodium peritoneal dialysis solutionBAXTER INT·Filed 1994·Granted Dec 31, 1996·61 cites·9 claims
- 2285US5100268AInsert clamped toolMITSUBISHI MATERIALS CORP·Filed 1990·Granted Mar 31, 1992·52 cites·2 claims
- 2385US5017055AIndexable cutter insertMITSUBISHI METAL CORP·Filed 1989·Granted May 21, 1991·45 cites·2 claims
- 2485US4898499ABall end millMITSUBISHI METAL CORP·Filed 1988·Granted Feb 6, 1990·46 cites·13 claims
- 2584US12432829B2Load drive deviceROHM CO LTD·Filed 2023·Granted Sep 30, 2025·0 cites·20 claims
- 2684US9900944B2Lighting deviceROHM CO LTD·Filed 2015·Granted Feb 20, 2018·3 cites·24 claims
- 2784US6082337AAbnormality detection apparatus for preventing fuel gas emissionDENSO CORP·Filed 1998·Granted Jul 4, 2000·43 cites·28 claims
- 2884US5188488AEnd millMITSUBISHI MATERIALS CORP·Filed 1992·Granted Feb 23, 1993·50 cites·10 claims
- 2983US10660168B2Lighting deviceROHM CO LTD·Filed 2018·Granted May 19, 2020·2 cites·30 claims
- 3083US5275037AApparatus for detecting misfire in internal combustion engineNIPPON DENSO CO·Filed 1992·Granted Jan 4, 1994·26 cites·11 claims
- 3182US8691356B2Disk and process for producing base material for disk, and disk rollWATANABE KAZUHISA·Filed 2011·Granted Apr 8, 2014·4 cites·8 claims
- 3282US8592021B2Disk roll and base material for disk rollNAKAYAMA MASAAKI·Filed 2010·Granted Nov 26, 2013·3 cites·5 claims
- 3382US6098603ABlow-by gas passage abnormality detecting system for internal combustion enginesDENSO CORP·Filed 1997·Granted Aug 8, 2000·29 cites·6 claims
- 3482US5532742AImage pickup apparatus with horizontal line interpolation function having three image pickup units shifted in vertical phase from one anotherMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 2, 1996·45 cites·20 claims
- 3582US5263364AApparatus for detecting misfire in multicylinder internal combustion enginesNIPPON DENSO CO·Filed 1992·Granted Nov 23, 1993·45 cites·14 claims
- 3682US4616962ACutter insertMITSUBISHI METAL CORP·Filed 1985·Granted Oct 14, 1986·45 cites·4 claims
- 3780US8834983B2Disk roll and base material for disk rollNICHIAS CORP·Filed 2013·Granted Sep 16, 2014·2 cites·10 claims
- 3880US4927303ABall end millMITSUBISHI METAL CORP·Filed 1989·Granted May 22, 1990·37 cites·3 claims
- 3979US12257948B2Lamp control deviceROHM CO LTD·Filed 2024·Granted Mar 25, 2025·0 cites·7 claims
- 4079US8776373B2Method for producing a disc rollNICHIAS CORP·Filed 2014·Granted Jul 15, 2014·3 cites·12 claims
- 4179US5085542AIndexable cutting insertMITSUBISHI MATERIALS CORP·Filed 1990·Granted Feb 4, 1992·39 cites·8 claims
- 4278US8683691B2Disk roll and base material for disk rollNAKAYAMA MASAAKI·Filed 2011·Granted Apr 1, 2014·2 cites·8 claims
- 4378US5629025ALow sodium peritoneal dialysis solutionBAXTER INT·Filed 1995·Granted May 13, 1997·40 cites·9 claims
- 4477US6338329B2Blow-by gas passage abnormality detecting system for internal combustion enginesDENSO CORP·Filed 2001·Granted Jan 15, 2002·16 cites·19 claims
- 4577US2025336780A1Semiconductor deviceROHM CO LTD·Filed 2025·Application pending·0 cites
- 4676US6470674B1Deterioration detecting apparatus and method for engine exhaust gas purifying deviceDENSO CORP·Filed 2000·Granted Oct 29, 2002·33 cites·18 claims
- 4775US10360969B2Light emitting element driving semiconductor integrated circuit, light emitting element driving device, light emitting device, and vehicleROHM CO LTD·Filed 2017·Granted Jul 23, 2019·2 cites·13 claims
- 4875US9040139B2Disk and process for producing base material for disk, and disk rollNICHIAS CORP·Filed 2014·Granted May 26, 2015·2 cites·3 claims
- 4975US8957598B2LED driving device, illuminator, and liquid crystal display deviceKANEMITSU RYOSUKE·Filed 2012·Granted Feb 17, 2015·2 cites·6 claims
- 5075US6289880B1Apparatus for detecting leakage of vapor purge systemDENSO CORP·Filed 2000·Granted Sep 18, 2001·16 cites·11 claims
Showing the top 50 of 125 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →