Inventor
ASAKURA HIROYUKI
JP57 patents
⚠️ This page may combine multiple inventors who share the name “ASAKURA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
40 patentsUS7013090B2Mar 14, 2006
Transmitting circuit apparatus and method
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD91 citations98
US5377286ADec 27, 1994
Optical fiber array and method of making the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD48 citations95
US6990155B2Jan 24, 2006
Wireless quadrature modulator transmitter using E/O and O/E connectives
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations93
US6643470B1Nov 4, 2003
FM signal converter, FM signal optical transmitter and FM signal optical receiver
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations93
US6314228B1Nov 6, 2001
Optical waveguide component and a method of producing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations93
US6181718B1Jan 30, 2001
Electronically cooled semiconductor laser module with modified ground line inductance
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations93
US6160931ADec 12, 2000
Wavelength-multiplexing optical transmission system provided with wavelength selectors
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations93
US6120191ASep 19, 2000
Laser diode module
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD49 citations93
US5859943AJan 12, 1999
Optical module and method for manufacturing the optical
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD29 citations93
US5778120AJul 7, 1998
Optical module and method for manufacturing the optical modules
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations93
US5559914ASep 24, 1996
Components for optical circuits and method of manufacturing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations93
US5457573AOct 10, 1995
Diffraction element and an optical multiplexing/demultiplexing device incorporating the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD48 citations93
US5450512ASep 12, 1995
Optical tap
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD42 citations93
US5448398ASep 5, 1995
Diffraction grating unit and second-harmonic generator employing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations93
US6504975B1Jan 7, 2003
Coupling lens and semiconductor laser module
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD50 citations92
US6445857B1Sep 3, 2002
Optical waveguide part, its manufacturing method, connection member, optical part, method for connecting optical waveguide part, and optical element
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD36 citations92
US5982793ANov 9, 1999
Semiconductor laser module with internal matching circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD23 citations92
US5321785AJun 14, 1994
Optical fiber array and method of making the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD20 citations92
US5311606AMay 10, 1994
Optical filter and optical amplifier employing said optical filters
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD27 citations92
US4673274AJun 16, 1987
Automatic focusing apparatus for camera
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD26 citations91
US5007709AApr 16, 1991
Diffraction grating and manufacturing method thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations90
US5420416AMay 30, 1995
Light wavelength selection device and method using diffraction grating with peak detection
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD52 citations89
US6989114B1Jan 24, 2006
Micro-shape transcription method, micro-shape transcription apparatus, and optical-component manufacture method
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations84
US6826418B2Nov 30, 2004
Radio circuit and control method of radio circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations84
US7014316B2Mar 21, 2006
Optical lens with marking and manufacturing method thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations74
US6658216B1Dec 2, 2003
Voltage controlled oscillator, FM signal optical transmitter, FM signal optical receiver and FM signal optical transmission system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US6606442B2Aug 12, 2003
Optical waveguide component and a method of producing the same
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US6597480B1Jul 22, 2003
Wavelength tunable filter apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US6496623B2Dec 17, 2002
Optical device, optical communication component and optical transmission apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations74
US6452706B1Sep 17, 2002
FM signal optical transmission apparatus and FM signal optical reception apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US6904220B2Jun 7, 2005
Optical waveguide, optical module, and method for producing same module
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations73
US4850692AJul 25, 1989
Semiconductor light position detector for rangefinder
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations71
US6964528B2Nov 15, 2005
Optical mount substrate, optical module, optical transmitter-receiver, optical transmitter-receiver system, and manufacturing method of optical mount substrate
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63
US6826344B2Nov 30, 2004
Optical element and method of fabrication thereof
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63
US6465858B2Oct 15, 2002
Semiconductor device package for optical communication device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63
US6430340B1Aug 6, 2002
Wavelength tunable filter device
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD6 citations63
US6186673B1Feb 13, 2001
Package for optical semiconductor module
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations63
US6946926B2Sep 20, 2005
Wired transmission path with plural equidistant differential conductors
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations62
US6886996B2May 3, 2005
Optical waveguide, optical module, and method for producing the same module
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations62
US4758764AJul 19, 1988
Light-emitting device for automatic focus adjustment apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations62
SONY CORP
3 patentsUS6639747B2Oct 28, 2003
Signal recording and reproducing method and signal recording and reproducing unit
SONY CORP7 citations74
US5461487AOct 24, 1995
Video playback device capable of removing time base errors from video signals
SONY CORP12 citations74
US7574099B2Aug 11, 2009
Recording/playback apparatus, recording method and playback method of coded data in two formats
SONY CORP1 citations52
SHINAGAWA REFRACTORIES CO
2 patentsDAINIPPON PRINTING CO LTD
1 patentFUJI PHOTO FILM CO LTD
1 patentFUJIKURA TATSUO
1 patentMITSUI CHEMICALS INC
1 patentJTEKT CORP
1 patentShowing the top 50 of 57 patents by PatentIndex Score.