Inventor
HAKOGI HIRONAO
JP22 patents
⚠️ This page may combine multiple inventors who share the name “HAKOGI HIRONAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
21 patentsUS6181854B1Jan 30, 2001
Optical module packaged with molded resin
FUJITSU LTD65 citations96
US5940563AAug 17, 1999
Receptacle optical module
FUJITSU LTD57 citations96
US5802230ASep 1, 1998
Optical semiconductor module
FUJITSU LTD71 citations96
US5784513AJul 21, 1998
Fiber-detachable-type optical module
FUJITSU LTD58 citations96
US5814871ASep 29, 1998
Optical semiconductor assembly having a conductive float pad
FUJITSU LTD56 citations95
US5359449AOct 25, 1994
Optical modulator for an optical transmitter
FUJITSU LTD127 citations95
US5784509AJul 21, 1998
Waveguide-optical fiber connection structure and waveguide-optical fiber connection method
FUJITSU LTD64 citations94
US5557695ASep 17, 1996
Waveguide-optical fiber connection structure and waveguide-optical fiber connection method
FUJITSU LTD58 citations94
US6086265AJul 11, 2000
Fiber-detachable-type optical module
FUJITSU LTD28 citations92
US5473711ADec 5, 1995
Dielectric optical waveguide device
FUJITSU LTD22 citations92
US5263102ANov 16, 1993
Polarization-independent optical switches/modulators
FUJITSU LTD36 citations92
US5076675ADec 31, 1991
Polarizing separating device and optical isolator employing the same
FUJITSU LTD45 citations92
US6135644AOct 24, 2000
Structures for optical semiconductor module, optical connector, and shape adapting optical connector
FUJITSU LTD25 citations90
US5679291AOct 21, 1997
Method of fabricating optical waveguide device
FUJITSU LTD17 citations74
US5612086AMar 18, 1997
Method of manufacturing an optical waveguide device
FUJITSU LTD9 citations74
US5598490AJan 28, 1997
Dielectric optical waveguide device
FUJITSU LTD11 citations74
US5283842AFeb 1, 1994
Operating point trimming method for optical waveguide modulator and switch
FUJITSU LTD10 citations74
US5185842AFeb 9, 1993
Optical waveguide type wavelength filter
FUJITSU LTD9 citations74
US5107535AApr 21, 1992
Connecting method between waveguide substrate and optical fiber
FUJITSU LTD10 citations74
US5721426AFeb 24, 1998
Optical transmitting/receiving module having communication lines coupled by a single lens
FUJITSU LTD8 citations73
US5841927ANov 24, 1998
Optical waveguide device and optical waveguide apparatus
FUJITSU LTD6 citations60