TY

Takafumi Yao

UN Unknown: 5 patents #3,065 of 83,584Top 4%
TC Tohoku Techno Arch Co.: 4 patents #4 of 193Top 3%
SC Stanley Electric Co.: 4 patents #170 of 1,072Top 20%
EC Epivalley Co.: 3 patents #4 of 18Top 25%
MC Mitsubishi Chemical: 3 patents #645 of 3,022Top 25%
DC Dowa Holdings Co.: 3 patents #7 of 77Top 10%
FC Furukawa Co.: 3 patents #10 of 90Top 15%
WA Wavesquare: 3 patents #6 of 7Top 90%
NI Ngk Insulators: 2 patents #947 of 2,083Top 50%
Canon: 1 patents #14,899 of 19,416Top 80%
JT Japan Science And Technology: 1 patents #225 of 836Top 30%
TU Tohoku University: 1 patents #615 of 1,680Top 40%
TC Tokyo Denpa Co.: 1 patents #3 of 21Top 15%
DC Dowa Electronics Materials Co.: 1 patents #148 of 241Top 65%
Overall (All Time): #324,434 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8878345 Structural body and method for manufacturing semiconductor substrate Hyun Jae Lee, Katsushi Fujii 2014-11-04
8216869 Group III nitride semiconductor and a manufacturing method thereof Meoung Whan Cho, Ryuichi Toba 2012-07-10
8124504 Method for growth of GaN single crystal, method for preparation of GaN substrate, process for producing GaN-based element, and GaN-based element Meoung Whan Cho 2012-02-28
8119499 Semiconductor substrate fabrication by etching of a peeling layer Meoung Whan Cho 2012-02-21
7906409 Device manufacturing method Meoung Whan Cho 2011-03-15
7829207 Manufacture method for ZnO based compound semiconductor crystal and ZnO based compound semiconductor substrate Hiroyuki Kato, Michihiro Sano, Katsumi Maeda, Hiroshi Yoneyama, Meoung Whan Cho 2010-11-09
7829435 Method for growth of GaN single crystal, method for preparation of GaN substrate, process for producing GaN-based element, and GaN-based element Meoung Whan Cho 2010-11-09
7482618 ZnO group epitaxial semiconductor device and its manufacture Hiroyuki Kato, Kazuhiro Miyamoto, Michihiro Sano 2009-01-27
7479188 Process for producing GaN substrate Takuma Suzuki, Hang-ju Ko, Agus Setiawan 2009-01-20
7438762 Manufacture method for ZnO based compound semiconductor crystal and ZnO based compound semiconductor substrate Hiroyuki Kato, Michihiro Sano, Katsumi Maeda, Hiroshi Yoneyama, Meoung Whan Cho 2008-10-21
6896731 P-type single crystal zinc-oxide having low resistivity and method for preparation thereof Tetsuya Yamamoto, Hiroshi Yoshida 2005-05-24
6777720 Semiconductor light-emitting element having first and second epitaxial layer group II-VI semiconductor compounds on a substrate Hiromitsu Uchiyama, Takaharu Iwadachi 2004-08-17
6664565 ZnO crystal growth method, ZnO crystal structure, and semiconductor device using ZnO crystal Michihiro Sano 2003-12-16
6664570 P-type contact electrode device and light-emitting device Meoung Whan Cho 2003-12-16
6407405 p-Type group II-VI compound semiconductor crystals growth method for such crystals, and semiconductor device made of such crystals Michihiro Sano 2002-06-18