Inventor
NIKI SHOJI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “NIKI SHOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ADVANTEST CORP
10 patentsUS5633959AMay 27, 1997
Polarization state changing apparatus and polarization degree measuring apparatus using the same
ADVANTEST CORP41 citations92
US6873405B2Mar 29, 2005
Propagation measuring apparatus and a propagation measuring method
ADVANTEST CORP17 citations83
US7324208B2Jan 29, 2008
Optical frequency measurement apparatus and optical frequency measurement method
ADVANTEST CORP7 citations73
US6980288B2Dec 27, 2005
Optical network analyzer
ADVANTEST CORP8 citations73
US5352885AOct 4, 1994
Frequency converter for varying the frequency of a local signal over a wide band
ADVANTEST CORP7 citations73
US5222070AJun 22, 1993
Optical pulse oscillator and light frequency measuring apparatus using the same
ADVANTEST CORP10 citations73
US7423759B2Sep 9, 2008
Wavelength determining device, wavelength meter equipped with the device, wavelength determining method, program, and recording medium
ADVANTEST CORP2 citations62
US7230691B2Jun 12, 2007
Photometer
ADVANTEST CORP2 citations62
US7079231B2Jul 18, 2006
Optical network analyzer
ADVANTEST CORP3 citations62
US7292116B2Nov 6, 2007
Temperature stabilizer and oscillating apparatus
ADVANTEST CORP1 citations51
TAKEDA RIKEN IND CO LTD
7 patentsUS4310891AJan 12, 1982
Frequency measuring apparatus
TAKEDA RIKEN IND CO LTD31 citations92
US3932814AJan 13, 1976
Heterodyne receiver system
TAKEDA RIKEN IND CO LTD40 citations92
US4272719AJun 9, 1981
Electric field intensity measuring apparatus
TAKEDA RIKEN IND CO LTD28 citations80
US4468614AAug 28, 1984
Average frequency measuring apparatus
TAKEDA RIKEN IND CO LTD14 citations74
US4620147AOct 28, 1986
Signal detector
TAKEDA RIKEN IND CO LTD12 citations73
US4680540AJul 14, 1987
Device for measuring average frequencies
TAKEDA RIKEN IND CO LTD10 citations72
US4127809ANov 28, 1978
Pulse modulated wave measuring device
TAKEDA RIKEN IND CO LTD1 citations51