Assignee
KOYAMA MASAKI
JP·10 granted patents·73 citations·filing 2009–2012
Top patents by PatentIndex Score
10 records- 0194US8421184B2Semiconductor deviceKOYAMA MASAKI·Filed 2010·Granted Apr 16, 2013·21 cites·25 claims
- 0290US8097901B2Semiconductor device having insulated gate semiconductor element, and insulated gate bipolar transistorKOYAMA MASAKI·Filed 2011·Granted Jan 17, 2012·11 cites·4 claims
- 0387US8716746B2Semiconductor deviceKOYAMA MASAKI·Filed 2011·Granted May 6, 2014·11 cites·19 claims
- 0486US8952449B2Semiconductor device having both IGBT area and diode areaKOYAMA MASAKI·Filed 2011·Granted Feb 10, 2015·8 cites·9 claims
- 0581US8507352B2Method of manufacturing semiconductor device including insulated gate bipolar transistor and diodeKOYAMA MASAKI·Filed 2009·Granted Aug 13, 2013·8 cites·9 claims
- 0680US9470230B2Refrigerant compressor and refrigeration cycle apparatus using the sameKOYAMA MASAKI·Filed 2011·Granted Oct 18, 2016·5 cites·8 claims
- 0779US8481393B2Semiconductor substrate and method for manufacturing the same, and method for manufacturing semiconductor deviceKOYAMA MASAKI·Filed 2010·Granted Jul 9, 2013·4 cites·28 claims
- 0871US9496138B2Method for manufacturing oxide semiconductor film, method for manufacturing semiconductor device, and semiconductor deviceKOYAMA MASAKI·Filed 2012·Granted Nov 15, 2016·2 cites·10 claims
- 0969US8216914B2Method for manufacturing SOI substrate and method for manufacturing semiconductor deviceKOYAMA MASAKI·Filed 2010·Granted Jul 10, 2012·2 cites·34 claims
- 1067US10047746B2Refrigerant compressor and refrigeration cycle deviceKOYAMA MASAKI·Filed 2012·Granted Aug 14, 2018·1 cites·5 claims
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