Inventor · disambiguated record
Fumio Koyama
Also filed as: KOYAMA FUMIO
54 granted patents·35 pending applications·538 citations·filing 1976–2024
98Inventor score
Files withSEIKO EPSON CORP49TOKYO INST TECH9KOYAMA FUMIO8CANON KK2FUJIFILM BUSINESS INNOVATION CORP2
Top patents by PatentIndex Score
89 records- 0194US5663824AOptical modulators as monolithically integrated optical isolatorsLUCENT TECHNOLOGIES INC·Filed 1993·Granted Sep 2, 1997·96 cites·33 claims
- 0291US11079541B2Optical deflection device and LIDAR apparatusNAT UNIV CORP YOKOHAMA NAT UNIV·Filed 2017·Granted Aug 3, 2021·5 cites·20 claims
- 0388US7050074B1Color correction in image displaySEIKO EPSON CORP·Filed 2000·Granted May 23, 2006·37 cites·28 claims
- 0485US6604682B2Method of and apparatus for reading a two-dimensional bar code symbol and data storage mediumSEIKO EPSON CORP·Filed 2001·Granted Aug 12, 2003·60 cites·65 claims
- 0583US7911544B2Image display device and image display methodSEIKO EPSON CORP·Filed 2006·Granted Mar 22, 2011·5 cites·16 claims
- 0679US6990128B2Surface emitting semiconductor laser and manufacturing method thereofFUMIO KOYAMA·Filed 2001·Granted Jan 24, 2006·16 cites·23 claims
- 0778US7728847B2Color conversion device and image display apparatus having the sameSEIKO EPSON CORP·Filed 2007·Granted Jun 1, 2010·5 cites·6 claims
- 0878US6449300B1Surface-emitting laserTOKYO INST TECH·Filed 2000·Granted Sep 10, 2002·15 cites·5 claims
- 0974US9808205B2Abnormality prediction device, abnormality prediction system, abnormality prediction method, biological information measuring device, biological information measuring system, and warning notification methodSEIKO EPSON CORP·Filed 2015·Granted Nov 7, 2017·2 cites·20 claims
- 1074US7450776B2Gradation attributes control according to characteristics of imageSEIKO EPSON CORP·Filed 2005·Granted Nov 11, 2008·4 cites·8 claims
- 1173US5940058AClamp and gamma correction circuit, and image display apparatus and electronic machine employing the sameSEIKO EPSON CORP·Filed 1997·Granted Aug 17, 1999·43 cites·11 claims
- 1272US7070286B2Projector with projection lens having a zoom functionSEIKO EPSON CORP·Filed 2001·Granted Jul 4, 2006·10 cites·7 claims
- 1371US8228342B2Image display device, highlighting methodKOYAMA FUMIO·Filed 2009·Granted Jul 24, 2012·2 cites·8 claims
- 1471US7659874B2Driving device for liquid crystal panel and image display apparatusSEIKO EPSON CORP·Filed 2006·Granted Feb 9, 2010·2 cites·7 claims
- 1570US7809040B2Red surface emitting laser element, image forming device, and image display apparatusCANON KK·Filed 2008·Granted Oct 5, 2010·2 cites·12 claims
- 1670US5432123AMethod for preparation of monolithically integrated devicesAT & T CORP·Filed 1993·Granted Jul 11, 1995·30 cites·11 claims
- 1769US9166370B2Vertical cavity surface emitting laser, vertical cavity surface emitting laser apparatus, optical transmission apparatus, and information processing apparatusKONDO TAKASHI·Filed 2012·Granted Oct 20, 2015·2 cites·13 claims
- 1868US8325397B2Image processing device and image display deviceKOYAMA FUMIO·Filed 2011·Granted Dec 4, 2012·2 cites·9 claims
- 1967US7359942B2Apparatus, method, network system, recording medium and computer program for processing transmitted informationSONY CORP·Filed 2001·Granted Apr 15, 2008·11 cites·21 claims
- 2067US6144354AImage display apparatusSEIKO EPSON CORP·Filed 1997·Granted Nov 7, 2000·33 cites·14 claims
- 2167US5091756ASuperlattice structureTOKYO INST TECH·Filed 1990·Granted Feb 25, 1992·33 cites·3 claims
- 2266US8106900B2Control method for information display device and an information display deviceKOYAMA FUMIO·Filed 2008·Granted Jan 31, 2012·1 cites·5 claims
- 2366US7990591B2Image processing device and image display deviceSEIKO EPSON CORP·Filed 2008·Granted Aug 2, 2011·3 cites·8 claims
- 2465US7598925B2Information display and information display systemSEIKO EPSON CORP·Filed 2005·Granted Oct 6, 2009·4 cites·19 claims
- 2564US7141441B2Surface emitting semiconductor laser and manufacturing method thereofFUMIO KOYAMA C O TOKYO INST OF·Filed 2004·Granted Nov 28, 2006·7 cites·10 claims
- 2664US4083560ATarget arrangement for a light pulse beam comprising crosswise arranged and grouped phototransistorsNISHI NIPPON DENKI CO LTD·Filed 1976·Granted Apr 11, 1978·27 cites·5 claims
- 2763US11506839B2Beam deflection deviceTOKYO INST TECH·Filed 2019·Granted Nov 22, 2022·0 cites·8 claims
- 2863US6756991B2Image display apparatus and color signal adjustment device used thereinSEIKO EPSON CORP·Filed 2001·Granted Jun 29, 2004·7 cites·2 claims
- 2962US8116344B2Red surface emitting laser element, image forming device, and image display apparatusTAKEUCHI TETSUYA·Filed 2009·Granted Feb 14, 2012·1 cites·13 claims
- 3062US7176909B2Color correction circuit and image display apparatus including the sameSEIKO EPSON CORP·Filed 2003·Granted Feb 13, 2007·5 cites·4 claims
- 3162US2024324961A1Biological information measurement apparatus and biological information measurement setSEIKO EPSON CORP·Filed 2024·Application pending·0 cites
- 3261US11444436B2Semiconductor optical amplifier, semiconductor optical amplification device, optical output device, and distance measuring deviceFUJIFILM BUSINESS INNOVATION CORP·Filed 2020·Granted Sep 13, 2022·0 cites·17 claims
- 3360US8421744B2Information display having separate and detachable unitsKOYAMA FUMIO·Filed 2009·Granted Apr 16, 2013·0 cites·6 claims
- 3459US5673241AFocus detection mechanism and optical head and optical storage device that use itSEIKO EPSON CORP·Filed 1996·Granted Sep 30, 1997·14 cites·37 claims
- 3556US2022085573A1Surface emitting laserTOKYO INST TECH·Filed 2021·Application pending·0 cites
- 3655US9806498B2Vertical-cavity surface-emitting laser diode and optical transmission apparatusTOKYO INST TECH·Filed 2016·Granted Oct 31, 2017·0 cites·10 claims
- 3754US9350139B2Vertical-cavity surface-emitting laser diode and optical transmission apparatusTOKYO INST TECH·Filed 2014·Granted May 24, 2016·0 cites·14 claims
- 3853US11789147B2Semiconductor optical amplifier, optical output device, and distance measuring deviceFUJIFILM BUSINESS INNOVATION CORP·Filed 2020·Granted Oct 17, 2023·0 cites·13 claims
- 3953US5990979AGamma correction circuit and video display apparatus using the sameSEIKO EPSON CORP·Filed 1997·Granted Nov 23, 1999·17 cites·15 claims
- 4053US2008218464A1Device control apparatus and image display apparatusSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 4153US2008291183A1Display driver and image display apparatusSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 4252US8514156B2Dynamic adjustment of counter electrode voltage of liquid crystal panel according to illumination light controlKOYAMA FUMIO·Filed 2007·Granted Aug 20, 2013·0 cites·5 claims
- 4352US6870552B2Adjustment of input-output characteristics of image display apparatusSEIKO EPSON CORP·Filed 2002·Granted Mar 22, 2005·3 cites·12 claims
- 4452US6590917B2Surface emitting laser and surface emitting laser arrayFUJI XEROX CO LTD·Filed 1999·Granted Jul 8, 2003·16 cites·26 claims
- 4552US5289486ASemiconductor luminous element and superlattice structureOMRON TATEISI ELECTRONICS CO·Filed 1993·Granted Feb 22, 1994·14 cites·10 claims
- 4652US2010322669A1Red surface emitting laser element, image forming device, and image display apparatusCANON KK·Filed 2010·Application pending·0 cites
- 4751US12057886B2Optical transceiverTOKYO INST TECH·Filed 2021·Granted Aug 6, 2024·0 cites·17 claims
- 4851US8334934B2Image display device and image display methodNOBORI TATSUHIKO·Filed 2010·Granted Dec 18, 2012·0 cites·9 claims
- 4951US7967450B2Light amount control device and projectorSEIKO EPSON CORP·Filed 2008·Granted Jun 28, 2011·0 cites·17 claims
- 5051US2005232486A1Image processing device and image processing methodSEIKO EPSON CORP·Filed 2005·Application pending·0 cites
Showing the top 50 of 89 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →