Inventor
YOSHIKAWA TAKAMASA
JP39 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIKAWA TAKAMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER ELECTRONIC CORP
20 patentsUS5990605ANov 23, 1999
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP112 citations98
US6184612B1Feb 6, 2001
Electron emission device with electron supply layer of hydrogenated amorphous silicon
PIONEER ELECTRONIC CORP70 citations96
US6166487ADec 26, 2000
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP78 citations96
US6130503AOct 10, 2000
Electron emission device and display using the same
PIONEER ELECTRONIC CORP73 citations96
US6066922AMay 23, 2000
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP62 citations96
US6147443ANov 14, 2000
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP19 citations93
US6144155ANov 7, 2000
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP23 citations93
US5986390ANov 16, 1999
Electron emission device having peak intensity ratio characteristic of raman spectrum for fold ring of SiO2
PIONEER ELECTRONIC CORP25 citations93
US6404124B1Jun 11, 2002
Electron emission device and display apparatus using the same
PIONEER ELECTRONIC CORP31 citations92
US6400070B1Jun 4, 2002
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP36 citations92
US6316873B1Nov 13, 2001
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP28 citations92
US6023125AFeb 8, 2000
Electron emission device and display using the same
PIONEER ELECTRONIC CORP49 citations92
US5894189AApr 13, 1999
Cold electron emission display device
PIONEER ELECTRONIC CORP28 citations92
US5681633AOct 28, 1997
Magneto optical disc, apparatus for reproducing the same and method of reproducing the same
PIONEER ELECTRONIC CORP37 citations92
US5000834AMar 19, 1991
Facing targets sputtering device
PIONEER ELECTRONIC CORP53 citations92
US6259198B1Jul 10, 2001
Flat panel display apparatus with an array of electron emitting devices
PIONEER ELECTRONIC CORP29 citations91
US6278230B1Aug 21, 2001
Electron emission device and display device using the same
PIONEER ELECTRONIC CORP16 citations84
US5382460AJan 17, 1995
Optical recording disk and production process therefor
PIONEER ELECTRONIC CORP18 citations74
US5087340AFeb 11, 1992
Method of making magneto-optical recording disk
PIONEER ELECTRONIC CORP13 citations73
US5217850AJun 8, 1993
Optical recording disk and manufacturing method thereof
PIONEER ELECTRONIC CORP2 citations62
PIONEER CORP
11 patentsUS6285123B1Sep 4, 2001
Electron emission device with specific island-like regions
PIONEER CORP76 citations96
US6787992B2Sep 7, 2004
Display device of flat panel structure with emission devices of matrix array
PIONEER CORP38 citations92
US6744063B2Jun 1, 2004
Image pickup device including electron-emitting devices
PIONEER CORP27 citations92
US6472803B1Oct 29, 2002
Electron emission light-emitting device and display apparatus using the same
PIONEER CORP29 citations92
US6388376B1May 14, 2002
Electron emission device with electron supply layer having reduced resistance
PIONEER CORP23 citations92
US6700132B2Mar 2, 2004
Flat panel display device utilizing electron emission devices
PIONEER CORP16 citations84
US6641887B2Nov 4, 2003
Optical recording medium
PIONEER CORP17 citations84
US7095040B2Aug 22, 2006
Electron-emitting device and method of manufacturing the same and display apparatus using the same
PIONEER CORP9 citations74
US7348531B2Mar 25, 2008
Photoelectric conversion device and image pickup device using electron emission devices
PIONEER CORP6 citations61
US7994698B2Aug 9, 2011
Electron emitting device, display apparatus using electron emitting device, and method of manufacturing electron emitting device
PIONEER CORP0 citations49
US7902760B2Mar 8, 2011
Electron emission device, and driving method thereof
PIONEER CORP0 citations42
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
5 patentsUS6488378B1Dec 3, 2002
Imaging apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD38 citations91
US7125144B2Oct 24, 2006
Illumination device and illumination method
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD14 citations83
US6776510B1Aug 17, 2004
Light source device, adjusting device therefore and production method therefore, and illuminating device and projection type display device provided with light source device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations81
US7118227B2Oct 10, 2006
Projection display device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations72
US7033030B2Apr 25, 2006
Projection-type display apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations61