Inventor
ISHITSUKA TAKESHI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “ISHITSUKA TAKESHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
20 patentsUS5835646ANov 10, 1998
Active optical circuit sheet or active optical circuit board, active optical connector and optical MCM, process for fabricating optical waveguide, and devices obtained thereby
FUJITSU LTD193 citations99
US6081632AJun 27, 2000
Method of producing optical waveguide system, optical device and optical coupler employing the same, optical network and optical circuit board
FUJITSU LTD141 citations98
US5917980AJun 29, 1999
Optical circuit device, its manufacturing process and a multilayer optical circuit using said optical circuit device
FUJITSU LTD98 citations98
US6693736B1Feb 17, 2004
Optical circuit system and components of same
FUJITSU LTD61 citations96
US6215585B1Apr 10, 2001
Optical circuit system and components of same technical field
FUJITSU LTD80 citations96
US5902715AMay 11, 1999
Method of forming a mirror in a waveguide
FUJITSU LTD54 citations96
US5757989AMay 26, 1998
Optical circuit system capable of producing optical signal having a small fluctuation and components of same
FUJITSU LTD80 citations96
US5658966AAug 19, 1997
Method of coupling optical parts and refractive index imaging material
FUJITSU LTD48 citations96
US6338975B1Jan 15, 2002
Optical circuit device, its manufacturing process and a multilayer optical circuit using said optical circuit device
FUJITSU LTD26 citations93
US5818983AOct 6, 1998
Optical integrated circuit, optical circuit waveguide device and process for oriented, selective growth and formation of organic film
FUJITSU LTD37 citations93
US6486235B2Nov 26, 2002
Composition of epoxy resin, curing agent, phosphate of resorcinol, Al (OH)
FUJITSU LTD25 citations92
US6017681AJan 25, 2000
Method of coupling optical parts and method of forming a mirror
FUJITSU LTD39 citations92
US5581646ADec 3, 1996
Method of coupling optical parts and refractive index imaging material
FUJITSU LTD36 citations92
US6846549B2Jan 25, 2005
Multilayer printed wiring board
FUJITSU LTD14 citations84
US5861444AJan 19, 1999
Refractive index imaging material
FUJITSU LTD15 citations82
US5231440AJul 27, 1993
Method of and apparatus for forming volume type phase hologram
FUJITSU LTD7 citations71
US5154994AOct 13, 1992
Method of and apparatus for forming volume type phase hologram
FUJITSU LTD12 citations71
US6916539B2Jul 12, 2005
Halogen-free, flame-retardant insulating epoxy resin composition and circuit board comprising insulation layer formed thereof
FUJITSU LTD2 citations62
US4791039ADec 13, 1988
Visible ray-recording hologram material
FUJITSU LTD1 citations52
US10008436B2Jun 26, 2018
Semiconductor device
FUJITSU LTD0 citations51