Kiyofumi Chikuma

Person

Tsurugashima, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor laser device and method of manufacturing the same
- Patent number 7,477,669
- Issue date Jan 13, 2009
- Pioneer Corporation
- Mamoru Miyachi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor light-emitting device and fabrication method thereof
- Patent number 7,399,649
- Issue date Jul 15, 2008
- Pioneer Corporation
- Mamoru Miyachi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Integrated semiconductor light-emitting device and method for manuf...
- Patent number 7,333,525
- Issue date Feb 19, 2008
- Pioneer Corporation
- Yoshinori Kimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Information recording medium, information recording apparatus, info...
- Patent number 7,315,506
- Issue date Jan 1, 2008
- Pioneer Corporation
- Kiyofumi Chikuma
- G11 - INFORMATION STORAGE
Information Patent Grant
Distributed feedback type semiconductor laser device
- Patent number 6,795,466
- Issue date Sep 21, 2004
- Pioneer Corporation
- Kiyoshi Takei
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device providing laser light of two wavelengths...
- Patent number 6,748,001
- Issue date Jun 8, 2004
- Pioneer Corporation
- Mitsuru Nishitsuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Ridge type semiconductor laser of distributed feedback
- Patent number 6,714,571
- Issue date Mar 30, 2004
- Pioneer Corporation
- Yoshiaki Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Nitride semiconductor laser and method of fabricating the same
- Patent number 6,711,192
- Issue date Mar 23, 2004
- Pioneer Corporation
- Kiyofumi Chikuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a ridge-shaped three dimensional waveguide
- Patent number 6,605,227
- Issue date Aug 12, 2003
- Pioneer Corporation
- Ayako Yoshida
- G02 - OPTICS
Information Patent Grant
Ridge type semiconductor laser of laterally-coupled distributed fee...
- Patent number 6,573,116
- Issue date Jun 3, 2003
- Pioneer Electronic Corporation
- Yoshiaki Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ridge-structure DFB semiconductor laser and method of manufacturing...
- Patent number 6,537,841
- Issue date Mar 25, 2003
- Pioneer Corporation
- Kiyoshi Takei
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmitter/receiver module and method of manufacturing the...
- Patent number 6,535,670
- Issue date Mar 18, 2003
- Pioneer Corporation
- Kiyoshi Takei
- G02 - OPTICS
Information Patent Grant
Gallium nitride based semiconductor light emitting device
- Patent number 6,515,311
- Issue date Feb 4, 2003
- Pioneer Corporation
- Mitsuru Nishitsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface acoustic wave device and method of manufacturing the same
- Patent number 6,510,597
- Issue date Jan 28, 2003
- Pioneer Corporation
- Ayako Yoshida
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Optical transmitter and receiver module which demultiplexes a super...
- Patent number 6,504,632
- Issue date Jan 7, 2003
- Pioneer Corporation
- Yoshiaki Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Distributed feedback semiconductor laser element and method for mak...
- Patent number 6,500,687
- Issue date Dec 31, 2002
- Pioneer Electronic Corporation
- Kiyoshi Takei
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Nitride semiconductor laser and method of fabricating the same
- Patent number 6,411,636
- Issue date Jun 25, 2002
- Pioneer Corporation
- Hiroyuki Ota
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ridge-structure DFB semiconductor laser and method of manufacturing...
- Patent number 6,381,258
- Issue date Apr 30, 2002
- Pioneer Corporation
- Kiyoshi Takei
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Method for producing semiconductor laser module
- Patent number 6,348,360
- Issue date Feb 19, 2002
- Pioneer Corporation
- Nong Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface acoustic wave device and method of manufacturing the same
- Patent number 6,348,754
- Issue date Feb 19, 2002
- Pioneer Corporation
- Ayako Yoshida
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Distributed feedback semiconductor laser
- Patent number 6,301,283
- Issue date Oct 9, 2001
- Pioneer Electronic Corporation
- Nong Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing non-regrowth distributed feedback ridge sem...
- Patent number 6,291,256
- Issue date Sep 18, 2001
- Pioneer Corporation
- Nong Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Ridge type semiconductor laser of laterally-coupled distributed fee...
- Patent number 6,292,503
- Issue date Sep 18, 2001
- Pioneer Electronic Corporation
- Yoshiaki Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Device for feeding raw material for chemical vapor phase deposition...
- Patent number 6,270,839
- Issue date Aug 7, 2001
- Pioneer Corporation
- Atsushi Onoe
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Wavelength converting device and method of fabricating wavelength c...
- Patent number 6,236,494
- Issue date May 22, 2001
- Pioneer Electronic Corporation
- Atsushi Onoe
- G02 - OPTICS
Information Patent Grant
Second harmonic wave-generating element
- Patent number 6,204,957
- Issue date Mar 20, 2001
- NGK Insulators, Ltd.
- Takashi Yoshino
- G02 - OPTICS
Information Patent Grant
Wavelength converting device and method of fabricating wavelength c...
- Patent number 6,163,397
- Issue date Dec 19, 2000
- Pioneer Electronic Corporation
- Atsushi Onoe
- G02 - OPTICS
Information Patent Grant
Potassium-containing thin film and process for producing the same
- Patent number 6,149,975
- Issue date Nov 21, 2000
- Dowa Mining Co., Ltd.
- Yuzo Tasaki
- C30 - CRYSTAL GROWTH
Information Patent Grant
Non-regrowth distributed feedback ridge semiconductor laser and met...
- Patent number 5,982,804
- Issue date Nov 9, 1999
- Pioneer Electronic Corporation
- Nong Chen
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of subliming material in CVD film preparation method
- Patent number 5,904,771
- Issue date May 18, 1999
- Dowa Mining Co., Ltd.
- Yuzo Tasaki
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Method for fabricating semiconductor laser device
- Publication number 20070099321
- Publication date May 3, 2007
- Mamoru Miyachi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Semiconductor laser device and method of manufacturing the same
- Publication number 20070091958
- Publication date Apr 26, 2007
- Mamoru Miyachi
- B82 - NANO-TECHNOLOGY
Information Patent Application
Integrated semiconductor light-emitting device and method for manuf...
- Publication number 20050175053
- Publication date Aug 11, 2005
- Yoshinori Kimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Recording/reproducing head, method of producing the same, and recor...
- Publication number 20050122886
- Publication date Jun 9, 2005
- Pioneer Corporation
- Hirokazu Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording medium, information recording apparatus, info...
- Publication number 20050036421
- Publication date Feb 17, 2005
- PIONEER CORPORATION
- Kiyofumi Chikuma
- G11 - INFORMATION STORAGE
Information Patent Application
Nitride semiconductor laser and method of fabricating the same
- Publication number 20040137655
- Publication date Jul 15, 2004
- PIONEER CORPORATION
- Kiyofumi Chikuma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD OF MANUFACTURUNG A RIDGE-SHAPED THREE DIMENSIONAL WAVEGUIDE
- Publication number 20020179567
- Publication date Dec 5, 2002
- AYAKO YOSHIDA
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Surface acoustic wave device and method of manufacturing the same
- Publication number 20020105249
- Publication date Aug 8, 2002
- PIONEER CORPORATION
- Ayako Yoshida
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Ridge-structure DFB semiconductor laser and method of manufacturing...
- Publication number 20020064199
- Publication date May 30, 2002
- PIONEER CORPORATION
- Kiyoshi Takei
- B82 - NANO-TECHNOLOGY
Information Patent Application
Ridge type semiconductor laser of laterally-coupled distributed fee...
- Publication number 20010046246
- Publication date Nov 29, 2001
- Pioneer Electronic Corporation
- Yoshiaki Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISTRIBUTED FEEDBACK SEMICONDUCTOR LASER ELEMENT AND METHOD FOR MAK...
- Publication number 20010039069
- Publication date Nov 8, 2001
- Kiyoshi Takei
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Ridge type semiconductor laser of distributed feedback
- Publication number 20010036213
- Publication date Nov 1, 2001
- Yoshiaki Watanabe
- H01 - BASIC ELECTRIC ELEMENTS

Kiyofumi Chikuma

Person

Patents Grantslast 30 patents

Semiconductor laser device and method of manufacturing the same

Semiconductor light-emitting device and fabrication method thereof

Integrated semiconductor light-emitting device and method for manuf...

Information recording medium, information recording apparatus, info...

Distributed feedback type semiconductor laser device

Semiconductor laser device providing laser light of two wavelengths...

Ridge type semiconductor laser of distributed feedback

Nitride semiconductor laser and method of fabricating the same

Method of manufacturing a ridge-shaped three dimensional waveguide

Ridge type semiconductor laser of laterally-coupled distributed fee...

Ridge-structure DFB semiconductor laser and method of manufacturing...

Optical transmitter/receiver module and method of manufacturing the...

Gallium nitride based semiconductor light emitting device

Surface acoustic wave device and method of manufacturing the same

Optical transmitter and receiver module which demultiplexes a super...

Distributed feedback semiconductor laser element and method for mak...

Nitride semiconductor laser and method of fabricating the same

Ridge-structure DFB semiconductor laser and method of manufacturing...

Method for producing semiconductor laser module

Surface acoustic wave device and method of manufacturing the same

Distributed feedback semiconductor laser

Method of manufacturing non-regrowth distributed feedback ridge sem...

Ridge type semiconductor laser of laterally-coupled distributed fee...

Device for feeding raw material for chemical vapor phase deposition...

Wavelength converting device and method of fabricating wavelength c...

Second harmonic wave-generating element

Wavelength converting device and method of fabricating wavelength c...

Potassium-containing thin film and process for producing the same

Non-regrowth distributed feedback ridge semiconductor laser and met...

Method of subliming material in CVD film preparation method

Patents Applicationslast 30 patents

Method for fabricating semiconductor laser device

Semiconductor laser device and method of manufacturing the same

Integrated semiconductor light-emitting device and method for manuf...

Recording/reproducing head, method of producing the same, and recor...

Information recording medium, information recording apparatus, info...

Nitride semiconductor laser and method of fabricating the same

METHOD OF MANUFACTURUNG A RIDGE-SHAPED THREE DIMENSIONAL WAVEGUIDE

Surface acoustic wave device and method of manufacturing the same

Ridge-structure DFB semiconductor laser and method of manufacturing...

Ridge type semiconductor laser of laterally-coupled distributed fee...

DISTRIBUTED FEEDBACK SEMICONDUCTOR LASER ELEMENT AND METHOD FOR MAK...

Ridge type semiconductor laser of distributed feedback