Inventor · disambiguated record
Tetsuo Iijima
Also filed as: IIJIMA TETSUO
16 granted patents·2 pending applications·553 citations·filing 1985–2011
94Inventor score
Files withHITACHI LTD8NIPPON TELEGRAPH & TELEPHONE3RENESAS ELECTRONICS CORP3RENESAS TECH CORP2ISHIZAKA KATUO1
Top patents by PatentIndex Score
18 records- 0194US6148536ATwo-fluid nozzle and device employing the same nozzle for freezing and drying liquid containing biological substancesNIPPON TELEGRAPH & TELEPHONE·Filed 1996·Granted Nov 21, 2000·122 cites·24 claims
- 0294US5656498AFreeze-dried blood cells, stem cells and platelets, and manufacturing method for the sameNIPPON TELEGRAPH & TELEPHONE·Filed 1995·Granted Aug 12, 1997·107 cites·16 claims
- 0389US5642252AInsulated gate semiconductor device and driving circuit device and electronic system both using the sameHITACHI LTD·Filed 1994·Granted Jun 24, 1997·107 cites·23 claims
- 0485US5051970AMagneto-optic recording system with overwrite capabilityNIPPON TELEGRAPH & TELEPHONE·Filed 1988·Granted Sep 24, 1991·41 cites·36 claims
- 0580US4831424AInsulated gate semiconductor device with back-to-back diodesHITACHI LTD·Filed 1987·Granted May 16, 1989·36 cites·14 claims
- 0673US5502338APower transistor device having collector voltage clamped to stable level over wide temperature rangeHITACHI LTD·Filed 1994·Granted Mar 26, 1996·37 cites·6 claims
- 0769US7312501B2Semiconductor deviceRENESAS TECH CORP·Filed 2005·Granted Dec 25, 2007·4 cites·14 claims
- 0868US6218889B1Semiconductor integrated circuit device, and method of manufacturing the sameHITACHI LTD·Filed 1998·Granted Apr 17, 2001·31 cites·18 claims
- 0962US5196354AMethod of manufacturing semiconductor device with controlled carrier lifetimeHITACHI LTD·Filed 1990·Granted Mar 23, 1993·30 cites·8 claims
- 1061US5397914APower transistor device including power transistors in darlington connection and zener diode which is coupled between collector and base of power transistors and which is formed in polysilicon filmHITACHI LTD·Filed 1993·Granted Mar 14, 1995·22 cites·11 claims
- 1155US6847058B2Semiconductor deviceRENESAS TECH CORP·Filed 2003·Granted Jan 25, 2005·6 cites·9 claims
- 1248US8035222B2Semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2010·Granted Oct 11, 2011·0 cites·14 claims
- 1347US7872348B2Semiconductor deviceRENESAS ELECTRONICS CORP·Filed 2010·Granted Jan 18, 2011·0 cites·12 claims
- 1445US4688323AMethod for fabricating vertical MOSFETsHITACHI LTD·Filed 1985·Granted Aug 25, 1987·9 cites·5 claims
- 1545US2008149972A1Semiconductor deviceISHIZAKA KATUO·Filed 2007·Application pending·0 cites
- 1644US7482861B1Semiconductor integrated circuit device, and method of manufacturing the sameHITACHI LTD·Filed 2000·Granted Jan 27, 2009·1 cites·3 claims
- 1742US8466549B2Semiconductor device for power conversionOCHI KENTARO·Filed 2011·Granted Jun 18, 2013·0 cites·15 claims
- 1837US2011089558A1Semiconductor device and a manufacturing method thereofRENESAS ELECTRONICS CORP·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →