Tsukasa Takahashi

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical switch
- Patent number 9,071,351
- Issue date Jun 30, 2015
- Fujitsu Limited
- Shinji Komiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and fault detection method
- Patent number 8,559,815
- Issue date Oct 15, 2013
- Fujitsu Limited
- Hiroshi Iizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion compensating apparatus, dispersion compensating method,...
- Patent number 8,538,264
- Issue date Sep 17, 2013
- Fujitsu Limited
- Masahiro Yuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical reception device, optical receiving method, and optical tra...
- Patent number 8,401,397
- Issue date Mar 19, 2013
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable dispersion compensation device
- Patent number 8,295,709
- Issue date Oct 23, 2012
- Fujitsu Telecom Networks Limited
- Kazuhiro Kunimatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal detection method, and light receiving apparatus usin...
- Patent number 8,260,152
- Issue date Sep 4, 2012
- Fujitsu Limited
- Togo Fukushi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission network
- Patent number 7,769,294
- Issue date Aug 3, 2010
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system
- Patent number 7,409,155
- Issue date Aug 5, 2008
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical terminal apparatus
- Patent number 7,349,150
- Issue date Mar 25, 2008
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system
- Patent number 7,251,072
- Issue date Jul 31, 2007
- Fujitsu Limited
- Toshihiro Ohtani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cell phone
- Patent number 7,130,591
- Issue date Oct 31, 2006
- Matsushita Electric Industrial Co., Ltd.
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mobile radio
- Patent number 6,897,814
- Issue date May 24, 2005
- Matsushita Electric Industrial Co., Ltd.
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method and device for optical fiber transmission
- Patent number 6,819,828
- Issue date Nov 16, 2004
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman excitation control method and optical transmission system usi...
- Patent number 6,674,567
- Issue date Jan 6, 2004
- Fujitsu Limited
- Toshihiro Ohtani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Inverted F-type antenna apparatus and portable radio communication...
- Patent number 6,670,925
- Issue date Dec 30, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna and wireless device incorporating the same
- Patent number 6,633,261
- Issue date Oct 14, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplification block, and optical amplification system using...
- Patent number 6,611,373
- Issue date Aug 26, 2003
- Fujitsu Limited
- Tsukasa Takahashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier
- Patent number 6,532,102
- Issue date Mar 11, 2003
- Fujitsu Limited
- Hideki Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Small-sized wireless device
- Patent number 6,078,292
- Issue date Jun 20, 2000
- Matsushita Electric Industrial Co., Ltd.
- Yoshio Koyanagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier having an attenuator for attenuating input power...
- Patent number 5,986,799
- Issue date Nov 16, 1999
- Fujitsu Limited
- Hiroyuki Itou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for selecting between a whip antenna and a built-in antenna
- Patent number 5,940,040
- Issue date Aug 17, 1999
- Matsushita Electric Industrial Co., Ltd.
- Yoshio Koyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier with reduced surge output
- Patent number 5,892,616
- Issue date Apr 6, 1999
- Fujitsu Limited
- Tsukasa Takahashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Optical power monitor device, optical amplifier, and optical transm...
- Patent number 5,847,856
- Issue date Dec 8, 1998
- Fujitsu Limited
- Kazuto Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Auxiliary-signal transmission system
- Patent number 5,841,558
- Issue date Nov 24, 1998
- Fujitsu Limited
- Yuji Tamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Auxiliary-signal transmission system
- Patent number 5,798,857
- Issue date Aug 25, 1998
- Fujitsu Limited
- Yuji Tamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and optical transmission apparatus
- Patent number 5,680,246
- Issue date Oct 21, 1997
- Fujitsu Limited
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Auxiliary-signal transmission system
- Patent number 5,625,481
- Issue date Apr 29, 1997
- Fujitsu Limited
- Yuji Tamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SWITCH
- Publication number 20130315583
- Publication date Nov 28, 2013
- Fujitsu Limited
- Shinji KOMIYA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PORTABLE RADIO
- Publication number 20110316758
- Publication date Dec 29, 2011
- PANASONIC CORPORATION
- Shingo Sumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MOBILE RADIO APPARATUS
- Publication number 20110260933
- Publication date Oct 27, 2011
- PANASONIC CORPORATION
- Tsukasa Takahashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
APPARATUS AND METHOD FOR DETECTING SIGNAL BEAM
- Publication number 20110142456
- Publication date Jun 16, 2011
- Fujitsu Limited
- Tsukasa TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MOBILE TERMINAL DEVICE
- Publication number 20110032161
- Publication date Feb 10, 2011
- PANASONIC CORPORATION
- Hideo Nakanishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VARIABLE DISPERSION COMPENSATION DEVICE
- Publication number 20110026941
- Publication date Feb 3, 2011
- FUJITSU TELECOM NETWORKS LIMITED
- Kazuhiro Kunimatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION APPARATUS AND FAULT DETECTION METHOD
- Publication number 20100322619
- Publication date Dec 23, 2010
- FUJITSU LIMITED
- Hiroshi Iizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DISPERSION COMPENSATING APPARATUS, DISPERSION COMPENSATING METHOD,...
- Publication number 20100303459
- Publication date Dec 2, 2010
- FUJITSU LIMITED
- Masahiro YUKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PORTABLE WIRELESS UNIT
- Publication number 20100240423
- Publication date Sep 23, 2010
- PANASONIC CORPORATION
- Kenji Takagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEPTION DEVICE, OPTICAL RECEIVING METHOD, AND OPTICAL TRA...
- Publication number 20100135672
- Publication date Jun 3, 2010
- FUJITSU LIMITED
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal detection method, and light receiving apparatus usin...
- Publication number 20090324218
- Publication date Dec 31, 2009
- FUJITSU LIMITED
- Togo Fukushi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PORTABLE WIRELESS APPARATUS
- Publication number 20090267842
- Publication date Oct 29, 2009
- Matsushita Electric Industrial Co., Ltd.
- Kenji Takagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Receiving apparatus, transmitting apparatus, receiving method, and...
- Publication number 20080089700
- Publication date Apr 17, 2008
- FUJITSU LIMITED
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission network
- Publication number 20070177875
- Publication date Aug 2, 2007
- FUJITSU LIMITED
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Antenna matching apparatus
- Publication number 20070010217
- Publication date Jan 11, 2007
- Matsushita Electric Industrial Co., Ltd.
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical terminal apparatus
- Publication number 20060082866
- Publication date Apr 20, 2006
- FUJITSU LIMITED
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman excitation control method and optical transmission system usi...
- Publication number 20050057794
- Publication date Mar 17, 2005
- FUJITSU LIMITED
- Toshihiro Ohtani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system
- Publication number 20050041968
- Publication date Feb 24, 2005
- FUJITSU LIMITED
- Tsukasa Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission device
- Publication number 20050002672
- Publication date Jan 6, 2005
- FUJITSU LIMITED
- Yukiko Sakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Cell phone
- Publication number 20040253972
- Publication date Dec 16, 2004
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical transmission system
- Publication number 20040042063
- Publication date Mar 4, 2004
- FUJITSU LIMITED
- Toshihiro Ohtani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and device for optical fiber transmission
- Publication number 20030026527
- Publication date Feb 6, 2003
- FUJITSU LIMITED
- Tsukasa Takahashi
- G02 - OPTICS
Information Patent Application
Optical amplification block, and optical amplification system using...
- Publication number 20030002144
- Publication date Jan 2, 2003
- FUJITSU LIMITED
- Tsukasa Takahashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Inverted F-type antenna apparatus and portable radio communication...
- Publication number 20020186169
- Publication date Dec 12, 2002
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman excitation control method and optical transmission system usi...
- Publication number 20020149841
- Publication date Oct 17, 2002
- FUJITSU LIMITED
- Toshihiro Ohtani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier
- Publication number 20020114060
- Publication date Aug 22, 2002
- Hideki Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Antenna and wireless device incorporating the same
- Publication number 20020075192
- Publication date Jun 20, 2002
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Mobile radio
- Publication number 20020061775
- Publication date May 23, 2002
- Hiroshi Iwai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Portable radio device having a structure for improving antenna char...
- Publication number 20020013159
- Publication date Jan 31, 2002
- MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- Tsukasa Takahashi
- H01 - BASIC ELECTRIC ELEMENTS

Tsukasa Takahashi

Person

Patents Grantslast 30 patents

Optical switch

Optical transmission apparatus and fault detection method

Dispersion compensating apparatus, dispersion compensating method,...

Optical reception device, optical receiving method, and optical tra...

Variable dispersion compensation device

Optical signal detection method, and light receiving apparatus usin...

Optical transmission network

Optical transmission system

Optical terminal apparatus

Optical transmission system

Cell phone

Mobile radio

Method and device for optical fiber transmission

Raman excitation control method and optical transmission system usi...

Inverted F-type antenna apparatus and portable radio communication...

Antenna and wireless device incorporating the same

Optical amplification block, and optical amplification system using...

Optical amplifier

Small-sized wireless device

Optical amplifier having an attenuator for attenuating input power...

System for selecting between a whip antenna and a built-in antenna

Optical amplifier with reduced surge output

Optical power monitor device, optical amplifier, and optical transm...

Auxiliary-signal transmission system

Auxiliary-signal transmission system

Optical amplifier and optical transmission apparatus

Auxiliary-signal transmission system

Patents Applicationslast 30 patents

OPTICAL SWITCH

PORTABLE RADIO

MOBILE RADIO APPARATUS

APPARATUS AND METHOD FOR DETECTING SIGNAL BEAM

MOBILE TERMINAL DEVICE

VARIABLE DISPERSION COMPENSATION DEVICE

OPTICAL TRANSMISSION APPARATUS AND FAULT DETECTION METHOD

DISPERSION COMPENSATING APPARATUS, DISPERSION COMPENSATING METHOD,...

PORTABLE WIRELESS UNIT

OPTICAL RECEPTION DEVICE, OPTICAL RECEIVING METHOD, AND OPTICAL TRA...

Optical signal detection method, and light receiving apparatus usin...

PORTABLE WIRELESS APPARATUS

Receiving apparatus, transmitting apparatus, receiving method, and...

Optical transmission network

Antenna matching apparatus

Optical terminal apparatus

Raman excitation control method and optical transmission system usi...

Optical transmission system

Optical transmission device

Cell phone

Optical transmission system

Method and device for optical fiber transmission

Optical amplification block, and optical amplification system using...

Inverted F-type antenna apparatus and portable radio communication...

Raman excitation control method and optical transmission system usi...

Optical amplifier

Antenna and wireless device incorporating the same

Mobile radio

Portable radio device having a structure for improving antenna char...