Tokyo
Japan
54
2013-01-24
The entities that hold a legal rights for patent applications filed by inventor Katayama Ryuichi:
Ryuichi Katayama from Tokyo, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
Polarized light emitting element for display apparatus
#2 | 2013-01-24Wavelength plate, light emitting element, and image display device using the light emitting element
#3 | 2013-01-17LIGHT SOURCE UNIT AND IMAGE DISPLAY DEVICE
#4 | 2012-03-29Optical information recording/ reproducing apparatus and optical information recording and reproducing method
#5 | 2011-05-12OPTICAL UNIT, CONTROL METHOD, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
#6 | 2011-02-03Optical information recording/reproducing device, optical unit, and optical information recording method
#7 | 2010-12-09Optical head device and optical information recording/reproducing device
#8 | 2010-09-09Optical head device for detecting an error signal and an optical information recording/reproducing device
#9 | 2010-09-02OPTICAL HEAD DEVICE, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD
#10 | 2010-07-13Method for detecting radial tilt of optical recording medium in optical head device, optical head device, and optical information recording/reproducing device
#11 | 2010-06-10OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING DEVICE
#12 | 2010-04-08OPTICAL HEAD DEVICE, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD USING THE SAME
#13 | 2010-04-08OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
#14 | 2010-03-25OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
#15 | 2010-03-11OPTICAL HEAD UNIT AND OPTCAL INFORMATION RECORDING/REPRODUCING APPARATUS
#16 | 2010-02-25OPTICAL RECORDING MEDIUM, OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE
#17 | 2010-02-04OPTICAL HEAD DEVICE, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE AND ERROR SIGNAL GENERATION METHOD
#18 | 2010-01-28OPTICAL HEAD DEVICE, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD THEREOF
#19 | 2009-11-26OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING APPARATUS WITH THE SAME
#20 | 2009-11-05OPTICAL HEAD UNIT AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS
#21 | 2009-10-15OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING APPARATUS
#22 | 2009-10-08Optical information recording/ reproducing device and optical information recording/ reproducing method
#23 | 2009-07-30Optical head device and optical information reproducing device
#24 | 2009-06-11OPTICAL HEAD AND OPTICAL INFORMATION RECORDER/REPRODUCER EMPLOYING IT
#25 | 2009-05-14Optical head device, optical information recording/reproducing apparatus and operation method of optical information recording/reproducing apparatus
#26 | 2009-02-26Optical system for detecting data signal and tracking error signal including polarizing optical element
#27 | 2009-02-19OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING OR REPRODUCING APPARATUS EQUIPPED WITH SAME
#28 | 2009-02-19Optical head apparatus and optical information recording/reproducing apparatus
#29 | 2009-01-15Optical head device and optical recording and reproducing apparatus
#30 | 2008-11-06OPTICAL HEAD DEVICE AND OPTICAL RECORDING AND REPRODUCING APPARATUS
#31 | 2008-09-18Optical head apparatus and optical information recording or reproducing apparatus
#32 | 2008-08-28Optical Head Apparatus and Optical Information Recording or Reproducing Apparatus Having the Same
#33 | 2008-04-08Optical disk device for detecting thickness errors of the transparent substrate
#34 | 2008-02-05Radial tilt compensating optical disk apparatus using tracking control loop gain
#35 | 2007-11-15Optical Head Apparatus and Optical Information Recording/Reproducing Apparatus With the Same
#36 | 2007-09-18Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus
#37 | 2007-09-13Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus
#38 | 2007-07-10Optical head unit and optical information writing/reading device
#39 | 2007-04-03Radial tilt detection optical head apparatus and optical information apparatus
#40 | 2006-12-14Optical head device and optical information recording/reproducing device
#41 | 2006-08-01Optical head device and optical information recording or reproducing device
#42 | 2006-05-18Optical head device and optical recording and reproducing apparatus
#43 | 2006-01-12Optical head device, method of manufacturing the same, and optical information recording and/or playback apparatus
#44 | 2005-12-27Optical head apparatus including two light sources and one photodetector
#45 | 2005-12-15Optical head device and optical information recording or reproducing device
#46 | 2005-12-15Optical head device and optical information recording or reproducing device
#47 | 2005-11-24Optical head device and optical information recording/reproduction apparatus
#48 | 2005-11-08Optical head apparatus and optical information recording and reproducing apparatus
#49 | 2005-06-23Optical head device and optical information recording or reproducing apparatus
#50 | 2005-06-23Optical system for detecting data signal and tracking error signal
#51 | 2005-06-16Optical head device and optical information recording/reproducing apparatus
#52 | 2005-05-26Optical disk medium and optical disk recording/reproducing apparatus utilizing tilt detection areas having special marks
#53 | 2005-05-17Optical system for detecting data signal and tracking error signal
#54 | 2005-04-28Optical head apparatus and optical information recording or reproducing apparatus
38087 ⎘