Inventor
TAKEDA KEIKO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “TAKEDA KEIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
18 patentsUS5708826AJan 13, 1998
Apparatus and method for converting presentation data
FUJITSU LTD223 citations95
US5077815ADec 31, 1991
Apparatus for optically connecting a single-mode optical fiber to a multi-mode optical fiber
FUJITSU LTD76 citations94
US6266180B1Jul 24, 2001
Optical fiber amplifier using optical fiber having a portion which suppresses nonlinear optical phenomena
FUJITSU LTD37 citations92
US6163398ADec 19, 2000
Dispersion compensating fiber and optical amplifier using same
FUJITSU LTD18 citations92
US6111586AAug 29, 2000
Electronic photo album editing apparatus
FUJITSU LTD172 citations92
US5467218ANov 14, 1995
Optical fiber amplifier
FUJITSU LTD36 citations92
US5007698AApr 16, 1991
Optical fiber amplifier/multiplexer
FUJITSU LTD30 citations92
US5155621AOct 13, 1992
Optical fiber amplifier
FUJITSU LTD36 citations91
US5136420AAug 4, 1992
Optical fiber amplifier
FUJITSU LTD50 citations91
US5508842AApr 16, 1996
Optical amplifier
FUJITSU LTD30 citations90
US6408652B1Jun 25, 2002
Solution doping method of making an optical amplifying fiber
FUJITSU LTD14 citations84
US5970198AOct 19, 1999
Optically amplifying fiber and optical fiber amplifier
FUJITSU LTD16 citations74
US5930436AJul 27, 1999
Optical amplifying fiber and process of producing the same
FUJITSU LTD14 citations74
US5327282AJul 5, 1994
Optical amplifier for 1.3 μm band
FUJITSU LTD15 citations74
US5140598AAug 18, 1992
Fiber optic amplifier
FUJITSU LTD17 citations74
US6748176B1Jun 8, 2004
Optical dropping apparatus and optical add/drop multiplexer
FUJITSU LTD7 citations73
US5276549AJan 4, 1994
Optical transmitter including rare earth-doped fiber
FUJITSU LTD10 citations72
US5812113ASep 22, 1998
Picture forming device
FUJITSU LTD3 citations53