Inventor · disambiguated record
Atsushi Matsuda
Also filed as: KISHIGAMI JUN · MATSUDA ATSUSHI
60 granted patents·12 pending applications·880 citations·filing 1973–2023
98Inventor score
Top patents by PatentIndex Score
72 records- 0197US5861771ARegulator circuit and semiconductor integrated circuit device having the sameFUJITSU LTD·Filed 1997·Granted Jan 19, 1999·124 cites·24 claims
- 0295US4122314ALoudspeaker having a laminate diaphragm of three layersSONY CORP·Filed 1977·Granted Oct 24, 1978·101 cites·14 claims
- 0393US3941946AElectrostatic transducer assemblySONY CORP·Filed 1973·Granted Mar 2, 1976·67 cites·3 claims
- 0491US7175815B2Fan type chemicals diffusing deviceFUMAKILLA LTD·Filed 2001·Granted Feb 13, 2007·74 cites·11 claims
- 0590US11061517B2Input deviceALPS ALPINE CO LTD·Filed 2020·Granted Jul 13, 2021·3 cites·11 claims
- 0689US10348316B2Frequency division correction circuit, reception circuit, and integrated circuitSOCIONEXT INC·Filed 2017·Granted Jul 9, 2019·8 cites·17 claims
- 0788US4198550APeripherally reinforced laminated loudspeaker diaphragmSONY CORP·Filed 1978·Granted Apr 15, 1980·58 cites·11 claims
- 0887US4252211ALoudspeakerSONY CORP·Filed 1979·Granted Feb 24, 1981·54 cites·17 claims
- 0984US5870000AOscillation circuit and PLL circuit using sameFUJITSU LTD·Filed 1997·Granted Feb 9, 1999·59 cites·11 claims
- 1080US10761663B2Input deviceALPS ALPINE CO LTD·Filed 2018·Granted Sep 1, 2020·3 cites·18 claims
- 1176US8981974B2Time-to-digital converter and control methodFUJITSU LTD·Filed 2014·Granted Mar 17, 2015·6 cites·11 claims
- 1274US11016626B2Input deviceALPS ALPINE CO LTD·Filed 2020·Granted May 25, 2021·1 cites·9 claims
- 1373US5239417ALens barrel for automatic focusing cameraASAHI OPTICAL CO LTD·Filed 1992·Granted Aug 24, 1993·40 cites·27 claims
- 1472US8384451B2PLL circuit, method for operating PLL circuit and systemFUJITSU LTD·Filed 2011·Granted Feb 26, 2013·4 cites·17 claims
- 1571US8709328B2Method for forming ventilation holes in an electrode plateFUJITA SATOSHI·Filed 2010·Granted Apr 29, 2014·2 cites·1 claims
- 1670US10554173B2Voltage controlled oscillator and PLL circuitSOCIONEXT INC·Filed 2018·Granted Feb 4, 2020·1 cites·6 claims
- 1770US5606287AOperational amplifier having stable operations for a wide range of source voltage, and current detector circuit employing a small number of elementsFUJITSU LTD·Filed 1995·Granted Feb 25, 1997·23 cites·14 claims
- 1869US12174047B2Capacitance detection device and capacitance detection methodALPS ALPINE CO LTD·Filed 2023·Granted Dec 24, 2024·0 cites·11 claims
- 1969US4893145AFocusing operation changeover apparatus for a cameraASAHI OPTICAL CO LTD·Filed 1988·Granted Jan 9, 1990·28 cites·19 claims
- 2067US7473731B2Hydroxyapatite composite and manufacturing method thereof, medical material using hydroxyapatite complexJAPAN SCIENCE & TECH AGENCY·Filed 2003·Granted Jan 6, 2009·13 cites·9 claims
- 2166US5568147ADigital-to-analog converter for reducing occupied area thereofFUJITSU LTD·Filed 1994·Granted Oct 22, 1996·25 cites·12 claims
- 2262US7511566B2Semiconductor circuit with positive temperature dependence resistorFUJITSU MICROELECTRONICS LTD·Filed 2005·Granted Mar 31, 2009·5 cites·9 claims
- 2362US4191863ASupport for multi-point magnetic driver loudspeakerSONY CORP·Filed 1978·Granted Mar 4, 1980·24 cites·11 claims
- 2461US11941220B2Input deviceALPS ALPINE CO LTD·Filed 2022·Granted Mar 26, 2024·0 cites·11 claims
- 2561US5483384ALens accessory attaching mechanismASAHI OPTICAL CO LTD·Filed 1994·Granted Jan 9, 1996·24 cites·37 claims
- 2661US2007111654A1Fan type chemical diffusing apparatusFUMAKILLA LTD·Filed 2006·Application pending·0 cites
- 2761US2007087679A1Fan type chemical diffusing apparatusFUMAKILLA LTD·Filed 2006·Application pending·0 cites
- 2860US8854102B2Clock generating circuitFUJITSU LTD·Filed 2013·Granted Oct 7, 2014·2 cites·9 claims
- 2957US2006137241A1Fan type chemical diffusing apparatusFUMAKILLA LTD·Filed 2006·Application pending·0 cites
- 3055US11867697B2Pancreatic cancer detection method and pancreatic cancer detection kitJVCKENWOOD CORP·Filed 2021·Granted Jan 9, 2024·0 cites·10 claims
- 3155US10310654B2Input device having flexible circuit boardALPS ALPINE CO LTD·Filed 2017·Granted Jun 4, 2019·0 cites·7 claims
- 3255US8638147B2Clock generator and system including the sameFUJITSU LTD·Filed 2013·Granted Jan 28, 2014·1 cites·16 claims
- 3355US2023331269A1Train jolt determination systemWEST JAPAN RAILWAY COMPANY·Filed 2023·Application pending·0 cites
- 3454US8736327B2Time-to-digital converterMATSUDA ATSUSHI·Filed 2009·Granted May 27, 2014·3 cites·12 claims
- 3554US6064243ACurrent switch and PLL in which it is usedFUJITSU LTD·Filed 1998·Granted May 16, 2000·16 cites·7 claims
- 3653US4662469ARear wheel steering device for motorcyclesYAMAHA MOTOR CO LTD·Filed 1986·Granted May 5, 1987·20 cites·9 claims
- 3752US12380638B2Non-transitory storage medium storing thereon optical aberration correction program and non-transitory storage medium storing thereon optical wavefront estimationNAT INST INF & COMM TECH·Filed 2021·Granted Aug 5, 2025·0 cites·10 claims
- 3852US7684780B2Semiconductor device, radio terminal device, and radio communication equipmentFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Mar 23, 2010·2 cites·16 claims
- 3952US3961202APower supply circuit for use with an electrostatic transducerSONY CORP·Filed 1974·Granted Jun 1, 1976·9 cites·8 claims
- 4051US12475783B2Signal control system, signal control method, and program recording mediumNEC CORP·Filed 2021·Granted Nov 18, 2025·0 cites·20 claims
- 4149US10409435B2Input device with one directional lead wiringALPS ALPINE CO LTD·Filed 2017·Granted Sep 10, 2019·0 cites·22 claims
- 4249US5673002AOperational amplifier having stable operations for a wide range of source voltage, and current detector circuit employing a small number of elementsFUJITSU LTD·Filed 1996·Granted Sep 30, 1997·9 cites·10 claims
- 4348US12175653B2Defect position determination system, appearance inspection method and programNEC CORP·Filed 2020·Granted Dec 24, 2024·0 cites·8 claims
- 4447US11022659B2Magnetic sensor and magnetic-field detection device including the sameTDK CORP·Filed 2016·Granted Jun 1, 2021·0 cites·17 claims
- 4547US9083361B2AdpllFUJITSU LTD·Filed 2014·Granted Jul 14, 2015·0 cites·7 claims
- 4646US6999016B2D/A converter and semiconductor deviceFUJITSU LTD·Filed 2004·Granted Feb 14, 2006·4 cites·4 claims
- 4745US12204001B2Gradient magnetic field sensor and magnetic matter detection deviceTDK CORP·Filed 2021·Granted Jan 21, 2025·0 cites·13 claims
- 4845US2024175693A1Evacuation route guidance system, evacuation route creation method, and recording medium recording programNEC CORP·Filed 2021·Application pending·0 cites
- 4944US9172385B2Timing adjustment circuit and semiconductor integrated circuit deviceSOCIONEXT INC·Filed 2014·Granted Oct 27, 2015·0 cites·28 claims
- 5043US10917095B2Level shifting circuit and integrated circuitSOCIONEXT INC·Filed 2019·Granted Feb 9, 2021·0 cites·8 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →