Inventor · disambiguated record
Yoshiro Koga
Also filed as: KOGA YOSHIRO
50 granted patents·7 pending applications·683 citations·filing 1983–2019
98Inventor score
Top patents by PatentIndex Score
57 records- 0191US7636101B2MEMS scanner adapted to a laser printerMICROVISION INC·Filed 2006·Granted Dec 22, 2009·12 cites·36 claims
- 0291US5655197ADeveloping deviceSEIKO EPSON CORP·Filed 1995·Granted Aug 5, 1997·47 cites·30 claims
- 0387US5557060ADeveloping deviceSEIKO EPSON CORP·Filed 1993·Granted Sep 17, 1996·30 cites·6 claims
- 0486US5697033AImage forming apparatus with film transfer memberSEIKO EPSON CORP·Filed 1996·Granted Dec 9, 1997·33 cites·11 claims
- 0585US6618065B2Image forming apparatus having a plurality of writing electrodesSEIKO EPSON CORP·Filed 2001·Granted Sep 9, 2003·24 cites·31 claims
- 0684US6515692B2Image forming apparatus having writing electrodes as a writing deviceSEIKO EPSON CORP·Filed 2001·Granted Feb 4, 2003·21 cites·13 claims
- 0783US5023733AHead positioning control for a spindle motor disk driveSEIKO EPSON CORP·Filed 1990·Granted Jun 11, 1991·37 cites·57 claims
- 0883US5017967AMethod and apparatus for forming images including a toner transporting member having an insulating layerSEIKO EPSON CORP·Filed 1989·Granted May 21, 1991·26 cites·32 claims
- 0981US6825867B2Organic electroluminescent array exposure head, method of fabricating the same, and image forming apparatus using the sameSEIKO EPSON CORP·Filed 2002·Granted Nov 30, 2004·30 cites·13 claims
- 1080US7672618B2Image forming apparatus and method using liquid development in which toner density is determined based on patch image densitySEIKO EPSON CORP·Filed 2008·Granted Mar 2, 2010·4 cites·6 claims
- 1179US7457568B2Image forming apparatus and method using liquid development in which toner density is determined based on patch image densitySEIKO EPSON CORP·Filed 2006·Granted Nov 25, 2008·4 cites·19 claims
- 1279US5893665AImage forming apparatusSEIKO EPSON CORP·Filed 1997·Granted Apr 13, 1999·23 cites·3 claims
- 1379US5563693AContact transfer device and image forming equipmentSEIKO EPSON CORP·Filed 1994·Granted Oct 8, 1996·22 cites·22 claims
- 1478US6518990B2Image forming apparatus for forming an electrostatic latent image on a latent image carrierSEIKO EPSON CORP·Filed 2001·Granted Feb 11, 2003·18 cites·12 claims
- 1577US5729811AContact transfer device and image forming equipmentSEIKO EPSON CORP·Filed 1996·Granted Mar 17, 1998·25 cites·4 claims
- 1677US5184257AHead positioning control for a spindle motor disk driveSEIKO EPSON CORP·Filed 1991·Granted Feb 2, 1993·26 cites·29 claims
- 1776US6661442B2Image forming apparatus having writing electrodes for forming an electrostatic latent imageSEIKO EPSON CORP·Filed 2002·Granted Dec 9, 2003·14 cites·5 claims
- 1874US6473107B2Image forming apparatusSEIKO EPSON CORP·Filed 2001·Granted Oct 29, 2002·13 cites·10 claims
- 1974US5324885ARoller member for an electrophotographic deviceSEIKO EPSON CORP·Filed 1993·Granted Jun 28, 1994·15 cites·25 claims
- 2072US6650349B2Image forming apparatus having writing electrodes as a writing deviceSEIKO EPSON CORP·Filed 2002·Granted Nov 18, 2003·11 cites·10 claims
- 2172US5537191AImage forming apparatus with toner transport mechanism incorporated thereinSEIKO EPSON CORP·Filed 1994·Granted Jul 16, 1996·16 cites·44 claims
- 2272US5214239AApparatus for forming an electrophotographic image having a novel toner carrierSEIKO EPSON CORP·Filed 1992·Granted May 25, 1993·14 cites·10 claims
- 2369US5870132ALaser beam scanning image forming apparatus having two-dimensionally disposed light emitting portionsSEIKO EPSON CORP·Filed 1997·Granted Feb 9, 1999·29 cites·5 claims
- 2467US5438395ADevelopment processSEIKO EPSON CORP·Filed 1991·Granted Aug 1, 1995·12 cites·10 claims
- 2566US5149914ADevelopment apparatus using a flexible magnetic field forming layerSEIKO EPSON CORP·Filed 1991·Granted Sep 22, 1992·17 cites·47 claims
- 2666US4555751ARectified and smoothed DC supplying circuitryONKYO KK·Filed 1983·Granted Nov 26, 1985·16 cites·7 claims
- 2765US7174111B2Apparatus and method of transferring image on intermediate medium onto recording mediumSEIKO EPSON CORP·Filed 2005·Granted Feb 6, 2007·2 cites·5 claims
- 2865US6326992B1Image forming apparatusSEIKO EPSON CORP·Filed 1998·Granted Dec 4, 2001·23 cites·1 claims
- 2963US7062202B2Image forming apparatus and method using liquid development under an image forming condition in which an adhesion amount of toner is substantially saturatedSEIKO EPSON CORP·Filed 2003·Granted Jun 13, 2006·6 cites·4 claims
- 3063US6873802B2Methods of verifying requirement for replacement of a main unit and of a component of image formation apparatus and judging advisability of recommendation for replacementSEIKO EPSON CORP·Filed 2003·Granted Mar 29, 2005·8 cites·49 claims
- 3161US6996360B2Apparatus and method of transferring image on intermediate medium onto recording mediumSEIKO EPSON CORP·Filed 2003·Granted Feb 7, 2006·6 cites·20 claims
- 3261US5987294AToner fixing apparatusSEIKO EPSON CORP·Filed 1998·Granted Nov 16, 1999·14 cites·27 claims
- 3361US5708941ADeveloping apparatus using non-magnetic spherical toner particlesSEIKO EPSON CORP·Filed 1996·Granted Jan 13, 1998·11 cites·20 claims
- 3459US6532031B2Image forming apparatus with writing electrodes having a substantially semi-circular resistant layerFiled 2001·Granted Mar 11, 2003·6 cites·28 claims
- 3558US5729804AToner storage device and supply mechanism for image formingSEIKO EPSON CORP·Filed 1995·Granted Mar 17, 1998·15 cites·22 claims
- 3657US7003236B2Liquid development apparatus, liquid development method, and image forming apparatus and image forming method using liquid developmentSEIKO EPSON CORP·Filed 2003·Granted Feb 21, 2006·6 cites·70 claims
- 3757US5424815ADeveloping deviceSEIKO EPSON CORP·Filed 1994·Granted Jun 13, 1995·8 cites·13 claims
- 3855US7135260B2Imaging systemSEIKO EPSON CORP·Filed 2004·Granted Nov 14, 2006·5 cites·9 claims
- 3951US5467174AApparatus for forming an image using an electrophotographic processSEIKO EPSON CORP·Filed 1993·Granted Nov 14, 1995·7 cites·45 claims
- 4050US11994435B2Pressure-sensitive sensorTAKANO CO LTD·Filed 2019·Granted May 28, 2024·0 cites·10 claims
- 4150US10469008B2Rotary solenoid drive control methodTAKANO CO LTD·Filed 2016·Granted Nov 5, 2019·0 cites·10 claims
- 4250US5633699AStructure for mounting a rotary member and image forming apparatus using same structureSEIKO EPSON CORP·Filed 1994·Granted May 27, 1997·8 cites·42 claims
- 4350US5570168ADevelopment processSEIKO EPSON CORP·Filed 1995·Granted Oct 29, 1996·7 cites·22 claims
- 4448US2007183822A1Fixing device and image forming apparatusSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 4547US12279890B2Pressure-sensitive sensor, mat system using pressure-sensitive sensor, and method for manufacturing pressure-sensitive sensorTAKANO CO LTD·Filed 2019·Granted Apr 22, 2025·0 cites·14 claims
- 4647US2006193651A1Image forming apparatus and image forming method using liquid developmentSEIKO EPSON CORP·Filed 2006·Application pending·0 cites
- 4743US11114231B2Rotary solenoidTAKANO CO LTD·Filed 2016·Granted Sep 7, 2021·0 cites·15 claims
- 4843US6526238B2Developing deviceSEIKO EPSON CORP·Filed 2001·Granted Feb 25, 2003·2 cites·16 claims
- 4941US2017151606A1Molding-material supplying mechanism and molding apparatusSEIKO EPSON CORP·Filed 2015·Application pending·0 cites
- 5041US2017043433A1Molding apparatus and molding methodSEIKO EPSON CORP·Filed 2015·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yoshiro Koga files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →