Assignee
ANDO ELECTRIC
JP420 patents
Top patents by PatentIndex Score
US5394235AFeb 28, 1995
Apparatus for measuring distortion position of optical fiber
ANDO ELECTRIC188 citations97
US6018535AJan 25, 2000
External cavity type wavelength-tunable light source
ANDO ELECTRIC78 citations96
US5936417AAug 10, 1999
Test head for IC tester
ANDO ELECTRIC60 citations96
US5862162AJan 19, 1999
External resonator type wavelength- tunable light source
ANDO ELECTRIC79 citations96
US5633750AMay 27, 1997
Optical fiber amplifier
ANDO ELECTRIC75 citations95
US5268949ADec 7, 1993
Circuit for generating M-sequence pseudo-random pattern
ANDO ELECTRIC107 citations95
US6795196B2Sep 21, 2004
Wavelength measurement apparatus
ANDO ELECTRIC63 citations94
US6028661AFeb 22, 2000
Multi-branched optical line testing apparatus
ANDO ELECTRIC57 citations94
US5686986ANov 11, 1997
Optical fiber characteristic measuring device
ANDO ELECTRIC64 citations94
US5509192AApr 23, 1996
Apparatus for press-fitting connectors into printed boards
ANDO ELECTRIC61 citations94
US4964074AOct 16, 1990
In-circuit emulator
ANDO ELECTRIC88 citations94
US6914464B2Jul 5, 2005
Phase locked loop circuit using fractional frequency divider
ANDO ELECTRIC23 citations93
US6094271AJul 25, 2000
Wavelength measuring system
ANDO ELECTRIC19 citations93
US6026100AFeb 15, 2000
External cavity-type of wavelength tunable semiconductor laser light source and method for tuning wavelength therefor
ANDO ELECTRIC55 citations93
US6023581AFeb 8, 2000
Program debugging support device
ANDO ELECTRIC20 citations93
US5994894ANov 30, 1999
Testboard for IC tester
ANDO ELECTRIC28 citations93
US5884236AMar 16, 1999
Calibration method of IC tester
ANDO ELECTRIC22 citations93
US5880833AMar 9, 1999
Spectrometer
ANDO ELECTRIC26 citations93
US5767966AJun 16, 1998
Optical spectrum measuring device
ANDO ELECTRIC21 citations93
US5619169AApr 8, 1997
Variable gain differential amplifier
ANDO ELECTRIC34 citations93
US5548609AAug 20, 1996
External resonator type wavelength-variable semiconductor laser light source
ANDO ELECTRIC22 citations93
US5493575AFeb 20, 1996
External resonator type frequency-variable semiconductor laser light source
ANDO ELECTRIC29 citations93
US5491714AFeb 13, 1996
Wavelength-variable semiconductor laser light source
ANDO ELECTRIC54 citations93
US5450428ASep 12, 1995
Phase-continuous and frequency-variable light source
ANDO ELECTRIC34 citations93
US5442651AAug 15, 1995
External cavity control semiconductor laser
ANDO ELECTRIC24 citations93
US6480318B2Nov 12, 2002
Optical amplifier evaluation method and optical amplifier evaluation instrument
ANDO ELECTRIC21 citations92
US6412087B1Jun 25, 2002
Pattern data transfer circuit
ANDO ELECTRIC22 citations92
US6246248B1Jun 12, 2001
Tester for detecting an abnormal quiescent power supply current in a device under test
ANDO ELECTRIC37 citations92
US6166845ADec 26, 2000
Electro-optic probe
ANDO ELECTRIC22 citations92
US6166805ADec 26, 2000
Double pass monochromator
ANDO ELECTRIC29 citations92
US6122420ASep 19, 2000
Optical loopback apparatus
ANDO ELECTRIC46 citations92
US6009028ADec 28, 1999
Failure self-diagnosis device for semiconductor memory
ANDO ELECTRIC22 citations92
US5937122AAug 10, 1999
High-reflection attenuating light interception apparatus
ANDO ELECTRIC28 citations92
US5917649AJun 29, 1999
Device and a method for evaluating an optical amplifier
ANDO ELECTRIC30 citations92
US5719514AFeb 17, 1998
Delay circuit compensating for variations in delay time
ANDO ELECTRIC54 citations92
US5677781AOct 14, 1997
Method and device for measuring a noise figure in optical amplifiers
ANDO ELECTRIC40 citations92
US5668819ASep 16, 1997
Mask control device for LSI tester
ANDO ELECTRIC21 citations92
US5561671AOct 1, 1996
Self-diagnostic device for semiconductor memories
ANDO ELECTRIC49 citations92
US5544183AAug 6, 1996
Variable wavelength light source
ANDO ELECTRIC35 citations92
US5452071ASep 19, 1995
Method of measuring optical attenuation using an optical time domain reflectometer
ANDO ELECTRIC21 citations92
US5400502AMar 28, 1995
Apparatus and method for fitting a press-fit connector to a printed circuit board
ANDO ELECTRIC29 citations92
US5309455AMay 3, 1994
High-power light pulse generating apparatus
ANDO ELECTRIC34 citations92
US5309438AMay 3, 1994
ATM cell delay circuit for ISDN system
ANDO ELECTRIC41 citations92
US5231753AAug 3, 1993
IC contact mechanism
ANDO ELECTRIC25 citations92
US5191387AMar 2, 1993
Polarization control system
ANDO ELECTRIC34 citations92
US6512610B1Jan 28, 2003
Device and method for testing of multi-branch optical network
ANDO ELECTRIC53 citations91
US6476919B1Nov 5, 2002
Polarization-independent reflectometry and polarization-independent reflectometer
ANDO ELECTRIC32 citations91
US6295306B1Sep 25, 2001
Tunable semiconductor laser light source
ANDO ELECTRIC20 citations91
US6160614ADec 12, 2000
Method, apparatus and computer program product for classification of measured data from multi-core optical fiber
ANDO ELECTRIC84 citations91
US6047008AApr 4, 2000
Variable wavelength laser light source
ANDO ELECTRIC53 citations91
Showing the top 50 of 420 patents by PatentIndex Score.