Inventor · disambiguated record
Isao Ohbu
Also filed as: OHBU ISAO
19 granted patents·2 pending applications·178 citations·filing 1991–2014
94Inventor score
Top patents by PatentIndex Score
21 records- 0194US8860093B2Semiconductor device and radio communication deviceSASAKI SATOSHI·Filed 2012·Granted Oct 14, 2014·17 cites·6 claims
- 0285US6461927B1Semiconductor device and method of producing the sameHITACHI LTD·Filed 2001·Granted Oct 8, 2002·37 cites·4 claims
- 0381US6816017B2Power amplifier moduleRENESAS TECH CORP·Filed 2001·Granted Nov 9, 2004·29 cites·12 claims
- 0480US7622756B2Semiconductor device and radio communication deviceRENESAS TECH CORP·Filed 2005·Granted Nov 24, 2009·7 cites·13 claims
- 0571US7368988B2High-frequency power amplifierRENESAS TECH CORP·Filed 2006·Granted May 6, 2008·7 cites·10 claims
- 0670US7256434B2Heterojunction 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
- 0767US9263559B2Semiconductor device and radio communication deviceMURATA MANUFACTURING CO·Filed 2014·Granted Feb 16, 2016·1 cites·3 claims
- 0865US8072001B2Heterojunction 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
- 0965US7547929B2Semiconductor HBT MMIC device and semiconductor moduleRENESAS TECH CORP·Filed 2005·Granted Jun 16, 2009·3 cites·3 claims
- 1065US6696711B2Semiconductor device and power amplifier using the sameRENESAS TECH CORP·Filed 2002·Granted Feb 24, 2004·10 cites·9 claims
- 1160US7804109B2Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the sameRENESAS ELECTRONICS CORP·Filed 2007·Granted Sep 28, 2010·1 cites·4 claims
- 1259US7067857B2Semiconductor device having led out conductor layers, manufacturing method of the same, and semiconductor moduleHITACHI LTD·Filed 2004·Granted Jun 27, 2006·9 cites·5 claims
- 1359US7045877B2Semiconductor protection deviceRENESAS TECH CORP·Filed 2003·Granted May 16, 2006·7 cites·18 claims
- 1459US6576937B2Semiconductor device and power amplifier using the sameHITACHI LTD·Filed 2001·Granted Jun 10, 2003·7 cites·8 claims
- 1557US6943387B2Semiconductor device, manufacturing thereof and power amplifier moduleRENESAS TECH CORP·Filed 2003·Granted Sep 13, 2005·7 cites·4 claims
- 1656US5144603AOptical head incorporating refractive index distribution changeable lensHITACHI LTD·Filed 1991·Granted Sep 1, 1992·21 cites·15 claims
- 1755US8227836B2Semiconductor device and radio communication deviceSASAKI SATOSHI·Filed 2009·Granted Jul 24, 2012·0 cites·20 claims
- 1848US7001819B2Semiconductor device and power amplifier using the sameRENESAS TECH CORP·Filed 2004·Granted Feb 21, 2006·2 cites·2 claims
- 1946US2006157825A1Semiconductor device and manufacturing the sameUMEMOTO YASUNARI·Filed 2006·Application pending·0 cites
- 2039US6724020B2Semiconductor device and power amplifier using the sameRENESAS TECH CORP·Filed 2003·Granted Apr 20, 2004·0 cites·6 claims
- 2133US2006138459A1Semiconductor device, manufacturing method of the same and electronic deviceKUROKAWA ATSUSHI·Filed 2005·Application pending·0 cites
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