Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KY

Koichiro Yuki — 33 Patents

Sumitomo Electric Industries: 32 patents #425 of 21,551Top 2%
Panasonic: 1 patents #13,316 of 21,108Top 65%
Neyagawa, JP: #20 of 782 inventorsTop 3%
Overall (All Time): #105,480 of 4,157,543Top 3%
33 Patents All Time
Koichiro Yuki has been granted 33 US patents while listed as an inventor at Sumitomo Electric Industries. The first was granted in 1995 and the most recent in December 2008. Koichiro Yuki ranks #105,480 of 4,157,543 US inventors in our database (top 2.5%). Patent records list Koichiro Yuki in Neyagawa, JP.

Patents per Year

Patents granted per year, 1995 to 2008Bar chart with a peak of 5 patents in 1996.peak 51995: 2 patents19951996: 5 patents1998: 1 patents19981999: 3 patents2000: 3 patents20002001: 2 patents2002: 4 patents20022003: 2 patents2004: 5 patents20042005: 2 patents2006: 3 patents20062008: 1 patents2008

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7465969 Bipolar transistor and method for fabricating the same Teruhito Ohnishi, Tsuneichiro Sano, Tohru Saitoh, Ken Idota, Takahiro Kawashima +1 more 2008-12-16 $416,000
7135721 Heterojunction bipolar transistor having reduced driving voltage requirements Kenji Toyoda, Takeshi Takagi, Teruhito Ohnishi, Minoru Kubo 2006-11-14 $349,000
7091099 Bipolar transistor and method for fabricating the same Teruhito Ohnishi, Tsuneichiro Sano, Tohru Saitoh, Ken Idota, Takahiro Kawashima +1 more 2006-08-15 $403,000
7049198 Semiconductor device and method for fabricating the same Tohru Saitoh, Minoru Kubo, Kiyoshi Ohnaka, Akira Asai, Koji Katayama 2006-05-23 $330,000
6847062 Semiconductor device Teruhito Ohnishi, Shigeki Sawada, Keiichiro Shimizu, Koichi Hasegawa, Tohru Saitoh 2005-01-25 $224,000
6847063 Semiconductor device Teruhito Ohnishi, Shigeki Sawada, Keiichiro Shimizu, Koichi Hasegawa, Tohru Saitoh +1 more 2005-01-25 $224,000
6821870 Heterojunction bipolar transistor and method for fabricating the same Takeshi Takagi, Kenji Toyoda, Yoshihiko Kanzawa 2004-11-23 $182,000
6759697 Heterojunction bipolar transistor Kenji Toyoda, Takeshi Takagi, Teruhito Ohnishi, Minoru Kubo 2004-07-06 $230,000
6756278 Lateral heterojunction bipolar transistor and method of fabricating the same Minoru Kubo 2004-06-29 $302,000
6713790 Semiconductor device and method for fabricating the same Akira Asai, Teruhito Oonishi, Takeshi Takagi, Tohru Saitoh, Yoshihiro Hara +4 more 2004-03-30 $307,000
6674150 Heterojunction bipolar transistor and method for fabricating the same Takeshi Takagi, Kenji Toyoda, Yoshihiko Kanzawa 2004-01-06 $249,000
6597016 Semiconductor device and method for fabricating the same Tohru Saitoh, Minoru Kubo, Kiyoshi Ohnaka, Akira Asai, Koji Katayama 2003-07-22 $216,000
6563146 Lateral heterojunction bipolar transistor and method of fabricating the same Minoru Kubo 2003-05-13 $160,000
6492711 Heterojunction bipolar transistor and method for fabricating the same Takeshi Takagi, Kenji Toyoda, Yoshihiko Kanzawa 2002-12-10 $227,000
6455364 Semiconductor device and method for fabricating the same Akira Asai, Teruhito Oonishi, Takeshi Takagi, Tohru Saitoh, Yoshihiro Hara +4 more 2002-09-24 $228,000
6399993 Semiconductor device and method for fabricating the same Teruhito Ohnishi, Akira Asai, Takeshi Takagi, Tohru Saitoh, Yo Ichikawa +4 more 2002-06-04 $232,000
6342716 Semiconductor device having dot elements as floating gate Kiyoyuki Morita, Kiyoshi Morimoto, Kiyoshi Araki, Kazuyasu Adachi, Masayuki Endo +1 more 2002-01-29 $223,000
6303516 Method for forming dot element Kiyoyuki Morita, Kiyoshi Morimoto, Kiyoshi Araki, Kazuyasu Adachi, Masayuki Endo +1 more 2001-10-16 $141,000
6171905 Semiconductor device and method of manufacturing the same Kiyoyuki Morita, Kiyoshi Morimoto, Kiyoshi Araki 2001-01-09 $192,000
6103583 Method for producing quantization functional device Kiyoshi Morimoto, Yoshihiko Hirai, Kiyoyuki Morita 2000-08-15 $235,000
6091077 MIS SOI semiconductor device with RTD and/or HET Kiyoyuki Morita, Kiyoshi Morimoto, Kiyoshi Araki 2000-07-18 $297,000
6015978 Resonance tunnel device Kiyoyuki Morita, Kiyoshi Morimoto, Yoshihiko Hirai 2000-01-18 $803,000
5972744 Quantum effect device, method of manufacturing the same Kiyoshi Morimoto, Kiyoyuki Morita, Kiyoshi Araki, Yoshihiko Hirai 1999-10-26 $183,000
5945687 Quantization functional device, quantization functional apparatus utilizing the same, and method for producing the same Kiyoshi Morimoto, Yoshihiko Hirai, Kiyoyuki Morita 1999-08-31 $363,000
5888852 Method for forming semiconductor microstructure, semiconductor device fabricated using this method, method for fabricating resonance tunneling device, and resonance tunnel device fabricated by this method Kiyoyuki Morita, Kiyoshi Morimoto, Yoshihiko Hirai 1999-03-30 $447,000