KC

Kiyofumi Chikuma

Pioneer Electronic: 45 patents #9 of 1,840Top 1%
Pioneer: 20 patents #42 of 1,730Top 3%
DC Dowa Mining Co.: 2 patents #92 of 324Top 30%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
NI Ngk Insulators: 1 patents #1,271 of 2,083Top 65%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #34,006 of 4,157,543Top 1%
65
Patents All Time

Issued Patents All Time

Showing 1–25 of 65 patents

Patent #TitleCo-InventorsDate
7477669 Semiconductor laser device and method of manufacturing the same Mamoru Miyachi, Yoshinori Kimura 2009-01-13
7399649 Semiconductor light-emitting device and fabrication method thereof Mamoru Miyachi, Hiroyuki Ota, Yoshinori Kimura 2008-07-15
7333525 Integrated semiconductor light-emitting device and method for manufacturing same Yoshinori Kimura, Mamoru Miyachi 2008-02-19
7315506 Information recording medium, information recording apparatus, information recording method, information playback apparatus, information playback method, recording program recording medium, and playback program recording medium 2008-01-01
6795466 Distributed feedback type semiconductor laser device Kiyoshi Takei, Nong Chen, Yoshiaki Watanabe 2004-09-21
6748001 Semiconductor laser device providing laser light of two wavelengths and method of fabricating the same Mitsuru Nishitsuka, Hiroyuki Ota 2004-06-08
6714571 Ridge type semiconductor laser of distributed feedback Yoshiaki Watanabe, Nong Chen, Kiyoshi Takei 2004-03-30
6711192 Nitride semiconductor laser and method of fabricating the same Hiroyuki Ota, Toshiyuki Tanaka 2004-03-23
6605227 Method of manufacturing a ridge-shaped three dimensional waveguide Ayako Yoshida, Atsushi Onoe 2003-08-12
6573116 Ridge type semiconductor laser of laterally-coupled distributed feedback and method of manufacturing the same Yoshiaki Watanabe, Kiyoshi Takei, Nong Chen 2003-06-03
6537841 Ridge-structure DFB semiconductor laser and method of manufacturing the same Kiyoshi Takei, Nong Chen, Yoshiaki Watanabe 2003-03-25
6535670 Optical transmitter/receiver module and method of manufacturing the same Kiyoshi Takei, Yoshiaki Watanabe, Nong Chen 2003-03-18
6515311 Gallium nitride based semiconductor light emitting device Mitsuru Nishitsuka 2003-02-04
6510597 Surface acoustic wave device and method of manufacturing the same Ayako Yoshida, Atsushi Onoe 2003-01-28
6504632 Optical transmitter and receiver module which demultiplexes a superimposed optical signal Yoshiaki Watanabe, Kiyoshi Takei, Nong Chen 2003-01-07
6500687 Distributed feedback semiconductor laser element and method for making the same Kiyoshi Takei, Yoshiaki Watanabe, Nong Chen 2002-12-31
6411636 Nitride semiconductor laser and method of fabricating the same Hiroyuki Ota 2002-06-25
6381258 Ridge-structure DFB semiconductor laser and method of manufacturing the same Kiyoshi Takei, Nong Chen, Yoshiaki Watanabe 2002-04-30
6348360 Method for producing semiconductor laser module Nong Chen, Kiyoshi Takei, Yoshiaki Watanabe 2002-02-19
6348754 Surface acoustic wave device and method of manufacturing the same Ayako Yoshida, Atsushi Onoe 2002-02-19
6301283 Distributed feedback semiconductor laser Nong Chen, Kiyoshi Takei, Yoshiaki Watanabe 2001-10-09
6292503 Ridge type semiconductor laser of laterally-coupled distributed feedback and method of manufacturing the same Yoshiaki Watanabe, Kiyoshi Takei, Nong Chen 2001-09-18
6291256 Method of manufacturing non-regrowth distributed feedback ridge semiconductor Nong Chen, Yoshiaki Watanabe, Koyoshi Takei 2001-09-18
6270839 Device for feeding raw material for chemical vapor phase deposition and method therefor Atsushi Onoe, Ayako Yoshida 2001-08-07
6236494 Wavelength converting device and method of fabricating wavelength converting device Atsushi Onoe, Ayako Yoshida 2001-05-22