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Tomoko Koyama
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Nagano-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Multiple wavelength light emitting device, electronic apparatus, an...
Patent number
RE45442
Issue date
Mar 31, 2015
Seiko Epson Corporation
Tatsuya Shimoda
313 - Electric lamp and discharge devices
Information
Patent Grant
Multiple wavelength light emitting device, electronic apparatus, an...
Patent number
RE44164
Issue date
Apr 23, 2013
Seiko Epson Corporation
Tatsuya Shimoda
313 - Electric lamp and discharge devices
Information
Patent Grant
Multiple wavelength light emitting device, electronic apparatus, an...
Patent number
RE43759
Issue date
Oct 23, 2012
Seiko Epson Corporation
Tatsuya Shimoda
313 - Electric lamp and discharge devices
Information
Patent Grant
Atomic frequency acquiring apparatus and atomic clock
Patent number
7,940,133
Issue date
May 10, 2011
Seiko Epson Corporation
Tomoko Koyama
G04 - HOROLOGY
Information
Patent Grant
Atomic frequency acquiring apparatus and atomic clock
Patent number
7,701,302
Issue date
Apr 20, 2010
Seiko Epson Corporation
Tomoko Koyama
G04 - HOROLOGY
Information
Patent Grant
Method of manufacturing directional coupler
Patent number
7,582,233
Issue date
Sep 1, 2009
Seiko Epson Corporation
Tomoko Koyama
G02 - OPTICS
Information
Patent Grant
Surface emitting type device having a resistance to damage by stati...
Patent number
7,566,909
Issue date
Jul 28, 2009
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical element
Patent number
7,453,914
Issue date
Nov 18, 2008
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Atomic frequency acquiring apparatus and atomic clock
Patent number
7,446,618
Issue date
Nov 4, 2008
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Surface emitting type device, and method for manufacturing the same
Patent number
7,385,225
Issue date
Jun 10, 2008
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Manufacturing method of optical communication module, optical commu...
Patent number
7,198,411
Issue date
Apr 3, 2007
Seiko Epson Corporation
Eiichi Fujii
G02 - OPTICS
Information
Patent Grant
Optical element, optical module, and optical transmission device
Patent number
7,197,203
Issue date
Mar 27, 2007
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting device and electronic instrument
Patent number
7,138,764
Issue date
Nov 21, 2006
Seiko Epson Corporation
Tomoko Koyama
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Photodetectors, optical modules, and optical transmission devices
Patent number
7,129,469
Issue date
Oct 31, 2006
Seiko Epson Corporation
Masamitsu Mochizuki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical multiplexing and demultiplexing device, optical communicati...
Patent number
6,917,744
Issue date
Jul 12, 2005
Seiko Epson Corporation
Tomoko Koyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical switch
Patent number
6,912,334
Issue date
Jun 28, 2005
Seiko Epson Corporation
Tomoko Koyama
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Organic semiconductor device
Patent number
6,870,182
Issue date
Mar 22, 2005
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light -emitting device
Patent number
6,795,463
Issue date
Sep 21, 2004
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light emitting device, display device and electronic instrument
Patent number
6,791,115
Issue date
Sep 14, 2004
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Multiple wavelength light emitting device, electronic apparatus, an...
Patent number
6,791,261
Issue date
Sep 14, 2004
Seiko Epson Corporation
Tatsuya Shimoda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting device
Patent number
6,737,802
Issue date
May 18, 2004
Seiko Epson Corporation
Tomoko Koyama
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Light emitting device having magnetized cathode and anode
Patent number
6,734,621
Issue date
May 11, 2004
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting device
Patent number
6,727,646
Issue date
Apr 27, 2004
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting device
Patent number
6,704,335
Issue date
Mar 9, 2004
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Multiple-wavelength light emitting device and electronic apparatus
Patent number
6,639,250
Issue date
Oct 28, 2003
Seiko Epson Corporation
Tatsuya Shimoda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Surface emitting device
Patent number
6,587,620
Issue date
Jul 1, 2003
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light emitting device, display device, and electronic appliance
Patent number
6,512,249
Issue date
Jan 28, 2003
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light-emitting device
Patent number
6,512,250
Issue date
Jan 28, 2003
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Light emitting device
Patent number
6,462,356
Issue date
Oct 8, 2002
Seiko Epson Corporation
Tomoko Koyama
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Reflective display using multiple liquid crystal layers for control...
Patent number
6,147,726
Issue date
Nov 14, 2000
Seiko Epson Corporation
Kanemitsu Kubota
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
ELECTROPHORETIC DISPLAY AND ELECTRONIC DEVICE
Publication number
20120314274
Publication date
Dec 13, 2012
SEIKO EPSON CORPORATION
Harunobu KOMATSU
G02 - OPTICS
Information
Patent Application
ATOMIC FREQUENCY ACQUIRING APPARATUS AND ATOMIC CLOCK
Publication number
20100148879
Publication date
Jun 17, 2010
SEIKO EPSON CORPORATION
Tomoko KOYAMA
G04 - HOROLOGY
Information
Patent Application
ATOMIC FREQUENCY ACQUIRING APPARATUS AND ATOMIC CLOCK
Publication number
20070146085
Publication date
Jun 28, 2007
SEIKO EPSON CORPORATION
Tomoko KOYAMA
G04 - HOROLOGY
Information
Patent Application
ATOMIC FREQUENCY ACQUIRING APPARATUS AND ATOMIC CLOCK
Publication number
20070139128
Publication date
Jun 21, 2007
SEIKO EPSON CORPORATION
Tomoko Koyama
G04 - HOROLOGY
Information
Patent Application
Surface emitting type device, and method for manufacturing the same
Publication number
20060192088
Publication date
Aug 31, 2006
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method of manufacturing directional coupler
Publication number
20060174657
Publication date
Aug 10, 2006
SEIKO EPSON CORPORATION
Tomoko Koyama
G02 - OPTICS
Information
Patent Application
Surface emitting type device, and method for manufacturing the same
Publication number
20060175617
Publication date
Aug 10, 2006
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical element
Publication number
20060159148
Publication date
Jul 20, 2006
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical element, optical module, and optical transmission device
Publication number
20060126695
Publication date
Jun 15, 2006
Seiko Epson Corporation
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Photodetectors, optical modules, and optical transmission devices
Publication number
20050145779
Publication date
Jul 7, 2005
SEIKO EPSON CORPORATION
Masamitsu Mochizuki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Manufacturing method of optical communication module, optical commu...
Publication number
20040223704
Publication date
Nov 11, 2004
Eiichi Fujii
G02 - OPTICS
Information
Patent Application
Optical switch
Publication number
20040081388
Publication date
Apr 29, 2004
SEIKO EPSON CORPORATION
Tomoko Koyama
G02 - OPTICS
Information
Patent Application
Optical multiplexing and demultiplexing device, optical communicati...
Publication number
20030231884
Publication date
Dec 18, 2003
SEIKO EPSON CORPORATION
Tomoko Koyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Directional coupler and optical communication device
Publication number
20030099438
Publication date
May 29, 2003
SEIKO EPSON CORPORATION
Tomoko Koyama
G02 - OPTICS
Information
Patent Application
Light-emitting device and electronic instrument
Publication number
20030094897
Publication date
May 22, 2003
SEIKO EPSON CORPORATION
Tomoko Koyama
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Organic semiconductor device
Publication number
20030085398
Publication date
May 8, 2003
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light emitting device
Publication number
20030048073
Publication date
Mar 13, 2003
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light emitting device, display device and electronic instrument
Publication number
20020125487
Publication date
Sep 12, 2002
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light emitting device, display device, and electric appliance
Publication number
20020119384
Publication date
Aug 29, 2002
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Light-emitting device
Publication number
20020030442
Publication date
Mar 14, 2002
SEIKO EPSON CORPORATION
Tomoko Koyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Surface emitting device
Publication number
20020018620
Publication date
Feb 14, 2002
SEIKO EPSON CORPORATION
Tomoko Koyama
B82 - NANO-TECHNOLOGY
Information
Patent Application
Light -emitting device
Publication number
20010043627
Publication date
Nov 22, 2001
Tomoko Koyama
B82 - NANO-TECHNOLOGY