Inventor · disambiguated record
Takao Izumi
Also filed as: IZUMI TAKAO
62 granted patents·18 pending applications·281 citations·filing 1983–2025
98Inventor score
Top patents by PatentIndex Score
80 records- 0188US10866553B1Image forming apparatus, determination method, and developer processing apparatus configured to determine timing for replacement of developer based on a history of a deterioration indexTOSHIBA TEC KK·Filed 2020·Granted Dec 15, 2020·2 cites·20 claims
- 0287US6766125B1Image forming apparatusTOSHIBA KK·Filed 2003·Granted Jul 20, 2004·28 cites·9 claims
- 0381US8328309B2Ink jet head and method of driving the sameIZUMI TAKAO·Filed 2011·Granted Dec 11, 2012·3 cites·14 claims
- 0481US7496306B2Cleaning method for transfer device of image forming apparatusTOSHIBA KK·Filed 2006·Granted Feb 24, 2009·6 cites·9 claims
- 0579US6337967B1Image forming apparatus for superposing monochrome imagesTOSHIBA TEC KK·Filed 2000·Granted Jan 8, 2002·18 cites·19 claims
- 0678US7831181B2Developing deviceTOSHIBA KK·Filed 2008·Granted Nov 9, 2010·4 cites·20 claims
- 0778US7383002B2Developing device, process cartridge and image forming apparatusTOSHIBA KK·Filed 2006·Granted Jun 3, 2008·5 cites·12 claims
- 0878US5404211ADeveloping device including device for selecting varying the thickness of the developing agentTOSHIBA KK·Filed 1993·Granted Apr 4, 1995·26 cites·5 claims
- 0976US12473470B2Photocurable adhesiveDENSO CORP·Filed 2022·Granted Nov 18, 2025·0 cites·6 claims
- 1076US6519437B1Prevention of excessive toner accumulation in a developing apparatusTOSHIBA TEC KK·Filed 2001·Granted Feb 11, 2003·15 cites·9 claims
- 1175US12473472B2Photocurable adhesiveDENSO CORP·Filed 2022·Granted Nov 18, 2025·0 cites·8 claims
- 1275US7684717B2Image forming apparatus and image forming methodTOSHIBA KK·Filed 2006·Granted Mar 23, 2010·4 cites·20 claims
- 1374US6044244AImage forming apparatus for enabling easy separation of recording sheets from photosensitive memberTOSHIBA KK·Filed 1998·Granted Mar 28, 2000·20 cites·19 claims
- 1473US12019389B2Image forming apparatusTOSHIBA TEC KK·Filed 2023·Granted Jun 25, 2024·0 cites·14 claims
- 1573US6167229AImage forming apparatus for enabling easy separation of recording sheets from photosensitive memberTOSHIBA KK·Filed 1999·Granted Dec 26, 2000·19 cites·5 claims
- 1671US2020033747A1Developing device and image forming apparatusTOSHIBA KK·Filed 2019·Application pending·0 cites
- 1770US7742712B2Transfer bias voltage controlling apparatusTOSHIBA KK·Filed 2007·Granted Jun 22, 2010·3 cites·20 claims
- 1870US4464743ARecord playing apparatusSONY CORP·Filed 1983·Granted Aug 7, 1984·15 cites·19 claims
- 1969US10754283B1Image forming apparatus and system that reduce defects caused by residual tonerTOSHIBA TEC KK·Filed 2019·Granted Aug 25, 2020·0 cites·18 claims
- 2069US6512910B2Developing apparatusTOSHIBA TEC KK·Filed 2001·Granted Jan 28, 2003·10 cites·12 claims
- 2169US2019121254A1Developing device and image forming apparatusTOSHIBA KK·Filed 2018·Application pending·0 cites
- 2268US11754954B2Image forming apparatusTOSHIBA TEC KK·Filed 2022·Granted Sep 12, 2023·0 cites·20 claims
- 2368US10942473B2Airflow guides in developing deviceTOSHIBA KK·Filed 2020·Granted Mar 9, 2021·0 cites·10 claims
- 2468US9032913B2Internal combustion engine systemHOSHINO MAKI·Filed 2011·Granted May 19, 2015·3 cites·17 claims
- 2566US11067931B2Image forming apparatus and system that reduce defects caused by residual tonerTOSHIBA TEC KK·Filed 2020·Granted Jul 20, 2021·0 cites·20 claims
- 2666US2019018336A1Developing device and image forming apparatusTOSHIBA KK·Filed 2018·Application pending·0 cites
- 2765US7995955B2Image forming apparatus, developing device and developer discharge mechanismTOSHIBA KK·Filed 2009·Granted Aug 9, 2011·2 cites·14 claims
- 2865US6519434B2Image forming apparatusTOSHIBA TEC KK·Filed 2001·Granted Feb 11, 2003·9 cites·24 claims
- 2965US6516174B1Developing apparatus having developer regulating bladeTOSHIBA TEC KK·Filed 2001·Granted Feb 4, 2003·9 cites·17 claims
- 3064US7146801B2Fuel vaporizing deviceNISSAN MOTOR·Filed 2003·Granted Dec 12, 2006·6 cites·11 claims
- 3163US10754293B1Image forming apparatus having heater, temperature sensor and controller which disables print suspend operationTOSHIBA TEC KK·Filed 2019·Granted Aug 25, 2020·0 cites·20 claims
- 3263US8099002B2Developing device of image forming apparatus using a toner and carrier mixtureIZUMI TAKAO·Filed 2008·Granted Jan 17, 2012·2 cites·12 claims
- 3363US6009286AImage forming apparatus with disturbance eliminationTOSHIBA KK·Filed 1998·Granted Dec 28, 1999·15 cites·10 claims
- 3462US12072644B1Image forming apparatusTOSHIBA TEC KK·Filed 2023·Granted Aug 27, 2024·0 cites·20 claims
- 3562US6625414B2Image forming apparatus with recovery device for recovering color developersTOSHIBA KK·Filed 2002·Granted Sep 23, 2003·8 cites·11 claims
- 3662US6567639B1Fixing device for heat pressure fixing a record medium and method thereofTOSHIBA TEC KK·Filed 2000·Granted May 20, 2003·8 cites·13 claims
- 3759US2025355393A1Server and image forming apparatusTOSHIBA TEC KK·Filed 2025·Application pending·0 cites
- 3858US8834612B2Hydrogen separation apparatus and process for manufacturing the sameHOSHINO MAKI·Filed 2008·Granted Sep 16, 2014·2 cites·12 claims
- 3957US12449751B2Image forming apparatus having service summons control and corresponding methodTOSHIBA TEC KK·Filed 2023·Granted Oct 21, 2025·0 cites·16 claims
- 4057US8598458B2Electronic device and method of manufacturing the sameISHINO HIROSHI·Filed 2011·Granted Dec 3, 2013·1 cites·13 claims
- 4157US7099615B2Image forming apparatus with guide member guiding image forming mediumTOSHIBA TEC KK·Filed 2004·Granted Aug 29, 2006·6 cites·10 claims
- 4257US6785486B2Image forming apparatusTOSHIBA KK·Filed 2002·Granted Aug 31, 2004·5 cites·3 claims
- 4357US6501923B2Image forming apparatus with increased heat dissipation structureTOSHIBA TEC KK·Filed 2001·Granted Dec 31, 2002·6 cites·6 claims
- 4456US8213812B2Image forming apparatus, method of determining deterioration degree of development agent, and program of determining deterioration degree of development agentIZUMI TAKAO·Filed 2009·Granted Jul 3, 2012·1 cites·12 claims
- 4555US8107834B2Image forming apparatus and control method for the sameIZUMI TAKAO·Filed 2007·Granted Jan 31, 2012·1 cites·15 claims
- 4652US8195071B2Developing deviceHATAKEYAMA TAKASHI·Filed 2010·Granted Jun 5, 2012·0 cites·20 claims
- 4751US6473573B2Developing apparatus with temperature sensorTOSHIBA TEC KK·Filed 2001·Granted Oct 29, 2002·4 cites·28 claims
- 4850US8045897B2Developing deviceTOSHIBA KK·Filed 2009·Granted Oct 25, 2011·0 cites·18 claims
- 4950US7899379B2Image forming apparatus and toner manufacturing methodTOSHIBA KK·Filed 2008·Granted Mar 1, 2011·0 cites·6 claims
- 5050US6539193B1Developing apparatus and image forming apparatus for stably forming a developer layer on a developer deviceTOSHIBA TEC KK·Filed 2001·Granted Mar 25, 2003·4 cites·16 claims
Showing the top 50 of 80 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →