Inventor · disambiguated record
Yasunari Umemoto
Also filed as: UMEMOTO YASUNARI
87 granted patents·7 pending applications·337 citations·filing 1983–2024
99Inventor score
Top patents by PatentIndex Score
94 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
- 0394US10002950B1Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2017·Granted Jun 19, 2018·6 cites·13 claims
- 0494US9397204B2Heterojunction bipolar transistor with two base layersMURATA MANUFACTURING CO·Filed 2015·Granted Jul 19, 2016·10 cites·12 claims
- 0594US8860093B2Semiconductor device and radio communication deviceSASAKI SATOSHI·Filed 2012·Granted Oct 14, 2014·17 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
- 0789US9508669B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2016·Granted Nov 29, 2016·5 cites·20 claims
- 0887US10629712B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2018·Granted Apr 21, 2020·3 cites·20 claims
- 0986US11705875B2Power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted Jul 18, 2023·1 cites·20 claims
- 1085US10388623B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2018·Granted Aug 20, 2019·3 cites·14 claims
- 1184US9991217B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2016·Granted Jun 5, 2018·3 cites·12 claims
- 1283US11107909B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2019·Granted Aug 31, 2021·2 cites·8 claims
- 1383US10361666B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2018·Granted Jul 23, 2019·2 cites·9 claims
- 1482US10886388B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Jan 5, 2021·1 cites·17 claims
- 1581US11508835B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2022·Granted Nov 22, 2022·0 cites·7 claims
- 1681US4546540ASelf-aligned manufacture of FETHITACHI LTD·Filed 1983·Granted Oct 15, 1985·47 cites·27 claims
- 1780US10297680B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2018·Granted May 21, 2019·1 cites·15 claims
- 1880US7622756B2Semiconductor device and radio communication deviceRENESAS TECH CORP·Filed 2005·Granted Nov 24, 2009·7 cites·13 claims
- 1980US2024204087A1Semiconductor deviceMURATA MANUFACTURING CO·Filed 2024·Application pending·0 cites
- 2079US9331187B2Bipolar transistorMURATA MANUFACTURING CO·Filed 2015·Granted May 3, 2016·3 cites·6 claims
- 2179US7723753B2Semiconductor device and manufacturing method of the sameRENESAS TECH CORP·Filed 2007·Granted May 25, 2010·9 cites·16 claims
- 2278US11251290B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2021·Granted Feb 15, 2022·0 cites·20 claims
- 2377US10147809B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2016·Granted Dec 4, 2018·2 cites·20 claims
- 2476US11949003B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2022·Granted Apr 2, 2024·0 cites·10 claims
- 2576US11227941B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2020·Granted Jan 18, 2022·0 cites·11 claims
- 2676US10559547B2Semiconductor chipMURATA MANUFACTURING CO·Filed 2018·Granted Feb 11, 2020·2 cites·19 claims
- 2775US11978786B2Bipolar transistor and radio-frequency power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted May 7, 2024·0 cites·18 claims
- 2875US10777669B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2018·Granted Sep 15, 2020·1 cites·17 claims
- 2973US11621678B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2021·Granted Apr 4, 2023·0 cites·19 claims
- 3073US11329146B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted May 10, 2022·0 cites·12 claims
- 3172US11532736B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted Dec 20, 2022·0 cites·12 claims
- 3272US11424350B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Aug 23, 2022·0 cites·20 claims
- 3371US10903803B2Semiconductor device and power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Jan 26, 2021·0 cites·20 claims
- 3471US10741680B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2019·Granted Aug 11, 2020·0 cites·14 claims
- 3570US11164963B2Bipolar transistor and radio-frequency power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Nov 2, 2021·0 cites·20 claims
- 3670US7256434B2Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the sameRENESAS TECH CORP·Filed 2004·Granted Aug 14, 2007·11 cites·4 claims
- 3768US11705509B2Heterojunction bipolar transistorMURATA MANUFACTURING CO·Filed 2020·Granted Jul 18, 2023·0 cites·19 claims
- 3868US11557664B2Heterojunction bipolar transistor including ballast resistor and semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted Jan 17, 2023·0 cites·10 claims
- 3968US10541320B2Bipolar transistor and method for producing the sameMURATA MANUFACTURING CO·Filed 2019·Granted Jan 21, 2020·0 cites·20 claims
- 4067US11476807B2Power amplifier moduleMURATA MANUFACTURING CO·Filed 2020·Granted Oct 18, 2022·0 cites·10 claims
- 4167US9263559B2Semiconductor device and radio communication deviceMURATA MANUFACTURING CO·Filed 2014·Granted Feb 16, 2016·1 cites·3 claims
- 4267US6636118B1High-frequency power amplification module and radio communication deviceHITACHI LTD·Filed 1999·Granted Oct 21, 2003·28 cites·39 claims
- 4365US8546939B2RF module including control IC without the aid of a relay padSASAKI KENJI·Filed 2006·Granted Oct 1, 2013·4 cites·16 claims
- 4465US8072001B2Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the sameOHBU ISAO·Filed 2010·Granted Dec 6, 2011·2 cites·2 claims
- 4564US12341476B2Power amplifier circuitMURATA MANUFACTURING CO·Filed 2021·Granted Jun 24, 2025·0 cites·11 claims
- 4663US11817356B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2021·Granted Nov 14, 2023·0 cites·18 claims
- 4763US11658180B2Semiconductor 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
- 4863US4698652AFET with Fermi level pinning between channel and heavily doped semiconductor gateHITACHI LTD·Filed 1985·Granted Oct 6, 1987·21 cites·13 claims
- 4963US4683487AHeterojunction bipolar transistorHITACHI LTD·Filed 1985·Granted Jul 28, 1987·20 cites·19 claims
- 5062US10978579B2Semiconductor deviceMURATA MANUFACTURING CO·Filed 2019·Granted Apr 13, 2021·0 cites·20 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
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