Keiko Takeda

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical dropping apparatus and optical add/drop multiplexer
- Patent number 6,748,176
- Issue date Jun 8, 2004
- Fujitsu Limited
- Shinya Inagaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Solution doping method of making an optical amplifying fiber
- Patent number 6,408,652
- Issue date Jun 25, 2002
- Fujitsu Limited
- Koji Okamura
- G02 - OPTICS
Information Patent Grant
Optical fiber amplifier using optical fiber having a portion which...
- Patent number 6,266,180
- Issue date Jul 24, 2001
- Fujitsu Limited
- Shinya Inagaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dispersion compensating fiber and optical amplifier using same
- Patent number 6,163,398
- Issue date Dec 19, 2000
- Fujitsu Limited
- Shinya Inagaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic photo album editing apparatus
- Patent number 6,111,586
- Issue date Aug 29, 2000
- Fujitsu Limited
- Hisayoshi Ikeda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optically amplifying fiber and optical fiber amplifier
- Patent number 5,970,198
- Issue date Oct 19, 1999
- Fujitsu Limited
- Shinya Inagaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying fiber and process of producing the same
- Patent number 5,930,436
- Issue date Jul 27, 1999
- Fujitsu Limited
- Koji Okamura
- G02 - OPTICS
Information Patent Grant
Picture forming device
- Patent number 5,812,113
- Issue date Sep 22, 1998
- Fujitsu Limited
- Hisayoshi Ikeda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus and method for converting presentation data
- Patent number 5,708,826
- Issue date Jan 13, 1998
- Fujitsu Limited
- Hisayoshi Ikeda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical amplifier
- Patent number 5,508,842
- Issue date Apr 16, 1996
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber amplifier
- Patent number 5,467,218
- Issue date Nov 14, 1995
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier for 1.3 .mu.m band
- Patent number 5,327,282
- Issue date Jul 5, 1994
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmitter including rare earth-doped fiber
- Patent number 5,276,549
- Issue date Jan 4, 1994
- Fujitsu Limited
- Kenji Tagawa
- G02 - OPTICS
Information Patent Grant
Optical fiber amplifier
- Patent number 5,155,621
- Issue date Oct 13, 1992
- Fujitsu Limited
- Keiko Takeda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fiber optic amplifier
- Patent number 5,140,598
- Issue date Aug 18, 1992
- Fujitsu Limited
- Kenji Tagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier
- Patent number 5,136,420
- Issue date Aug 4, 1992
- Fujitsu Limited
- Shinya Inagaki
- G02 - OPTICS
Information Patent Grant
Apparatus for optically connecting a single-mode optical fiber to a...
- Patent number 5,077,815
- Issue date Dec 31, 1991
- Fujitsu Limited
- Sakae Yoshizawa
- G02 - OPTICS
Information Patent Grant
Optical fiber amplifier/multiplexer
- Patent number 5,007,698
- Issue date Apr 16, 1991
- Fujitsu Limited
- Kazuya Sasaki
- H01 - BASIC ELECTRIC ELEMENTS

Keiko Takeda

Person

Patents Grantslast 30 patents

Optical dropping apparatus and optical add/drop multiplexer

Solution doping method of making an optical amplifying fiber

Optical fiber amplifier using optical fiber having a portion which...

Dispersion compensating fiber and optical amplifier using same

Electronic photo album editing apparatus

Optically amplifying fiber and optical fiber amplifier

Optical amplifying fiber and process of producing the same

Picture forming device

Apparatus and method for converting presentation data

Optical amplifier

Optical fiber amplifier

Optical amplifier for 1.3 .mu.m band

Optical transmitter including rare earth-doped fiber

Optical fiber amplifier

Fiber optic amplifier

Optical fiber amplifier

Apparatus for optically connecting a single-mode optical fiber to a...

Optical fiber amplifier/multiplexer