Inventor · disambiguated record
Isao Obu
Also filed as: OBU ISAO
56 granted patents·4 pending applications·79 citations·filing 2007–2024
97Inventor score
Top patents by PatentIndex Score
60 records- 0195US10056476B1Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2018·Granted Aug 21, 2018·9 cites·20 claims
- 0295US9859405B1Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2017·Granted Jan 2, 2018·10 cites·20 claims
- 0394US9397204B2Heterojunction bipolar transistor with two base layersMURATA MANUFACTURING CO·Filed 2015·Granted Jul 19, 2016·10 cites·12 claims
- 0491US10192862B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2018·Granted Jan 29, 2019·6 cites·20 claims
- 0590US9343360B2Bump-equipped electronic component and method for manufacturing bump-equipped electronic componentMURATA MANUFACTURING CO·Filed 2013·Granted May 17, 2016·9 cites·6 claims
- 0690US9130004B2Heterojunction bipolar transistor, power amplifier including the same, and method for fabricating heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2013·Granted Sep 8, 2015·11 cites·15 claims
- 0787US10629712B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2018·Granted Apr 21, 2020·3 cites·20 claims
- 0886US11705875B2Power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted Jul 18, 2023·1 cites·20 claims
- 0983US11107909B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2019·Granted Aug 31, 2021·2 cites·8 claims
- 1083US10361666B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2018·Granted Jul 23, 2019·2 cites·9 claims
- 1182US10886388B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Jan 5, 2021·1 cites·17 claims
- 1280US2024204087A1Semiconductor deviceMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 1379US7723753B2Semiconductor device and manufacturing method of the sameRENESAS TECH CORP·Filed 2007·Granted May 25, 2010·9 cites·16 claims
- 1478US9679860B2Bump-equipped electronic component and method for manufacturing bump-equipped electronic componentMURATA MANUFACTURING CO·Filed 2016·Granted Jun 13, 2017·2 cites·4 claims
- 1576US11949003B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2022·Granted Apr 2, 2024·0 cites·10 claims
- 1675US11978786B2Bipolar transistor and radio-frequency power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted May 7, 2024·0 cites·18 claims
- 1775US10777669B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2018·Granted Sep 15, 2020·1 cites·17 claims
- 1875US9997516B2Semiconductor device and power amplifier circuitMURATA MANUFACTURING CO·Filed 2017·Granted Jun 12, 2018·2 cites·12 claims
- 1973US11621678B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted Apr 4, 2023·0 cites·19 claims
- 2073US11329146B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted May 10, 2022·0 cites·12 claims
- 2172US11424350B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Aug 23, 2022·0 cites·20 claims
- 2271US10903803B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Jan 26, 2021·0 cites·20 claims
- 2370US11164963B2Bipolar transistor and radio-frequency power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Nov 2, 2021·0 cites·20 claims
- 2470US10134842B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2017·Granted Nov 20, 2018·1 cites·12 claims
- 2570US2023395542A1Semiconductor device with protective protrusionMURATA MANUFACTURING CO·Filed 2023·Application pending·0 cites
- 2668US11705509B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Jul 18, 2023·0 cites·19 claims
- 2768US11557664B2Heterojunction bipolar transistor including ballast resistor and semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted Jan 17, 2023·0 cites·10 claims
- 2867US11476807B2Power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Oct 18, 2022·0 cites·10 claims
- 2963US11817356B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted Nov 14, 2023·0 cites·18 claims
- 3063US11658180B2Semiconductor device having a plurality of bipolar transistors with different heights between their respective emitter layers and emitter electrodesMURATA MANUFACTURING CO·Filed 2021·Granted May 23, 2023·0 cites·18 claims
- 3162US10665519B2Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packagedMURATA MANUFACTURING CO·Filed 2019·Granted May 26, 2020·0 cites·12 claims
- 3259US11075289B2Heterojunction bipolar transistor including ballast resistor and semiconductor deviceMURATA MANUFACTURING CO·Filed 2019·Granted Jul 27, 2021·0 cites·6 claims
- 3359US10594271B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2019·Granted Mar 17, 2020·0 cites·20 claims
- 3458US11227804B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2020·Granted Jan 18, 2022·0 cites·20 claims
- 3558US10355114B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2017·Granted Jul 16, 2019·0 cites·19 claims
- 3657US11735541B2Semiconductor device with protective protrusionMURATA MANUFACTURING CO·Filed 2019·Granted Aug 22, 2023·0 cites·17 claims
- 3757US10964693B2Semiconductor device having a plurality of bipolar transistors with different heights between their respective emitter layers and emitter electrodesMURATA MANUFACTURING CO·Filed 2019·Granted Mar 30, 2021·0 cites·19 claims
- 3857US10707200B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2018·Granted Jul 7, 2020·0 cites·18 claims
- 3957US10665704B2Bipolar transistor and radio-frequency power amplifier moduleMURATA MANUFACTURING CO·Filed 2018·Granted May 26, 2020·0 cites·24 claims
- 4056US10475717B2Semiconductor chip, method for mounting semiconductor chip, and module in which semiconductor chip is packagedMURATA MANUFACTURING CO·Filed 2018·Granted Nov 12, 2019·0 cites·9 claims
- 4155US10855232B2Power amplifier moduleMURATA MANUFACTURING CO·Filed 2018·Granted Dec 1, 2020·0 cites·11 claims
- 4254US11227862B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2020·Granted Jan 18, 2022·0 cites·15 claims
- 4354US10972060B2Radio frequency power amplifier and power amplifier moduleMURATA MANUFACTURING CO·Filed 2019·Granted Apr 6, 2021·0 cites·20 claims
- 4452US11276689B2Semiconductor device and amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Mar 15, 2022·0 cites·20 claims
- 4552US10249620B2Semiconductor device and power amplifier circuitMURATA MANUFACTURING CO·Filed 2018·Granted Apr 2, 2019·0 cites·18 claims
- 4651US11289434B2Semiconductor element and power amplification deviceMURATA MANUFACTURING CO·Filed 2020·Granted Mar 29, 2022·0 cites·20 claims
- 4750US10879847B2Transmission unitMURATA MANUFACTURING CO·Filed 2018·Granted Dec 29, 2020·0 cites·17 claims
- 4850US2017236796A1Bump-equipped electronic component and method for manufacturing bump-equipped electronic componentMURATA MANUFACTURING CO·Filed 2017·Application pending·0 cites
- 4949US11626511B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2018·Granted Apr 11, 2023·0 cites·20 claims
- 5048US11631758B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2020·Granted Apr 18, 2023·0 cites·20 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →