Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Koichi Baba — 24 Patents

Sony: 7 patents #6,060 of 25,231Top 25%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
TKToyo Boseki Kabushiki Kaisha: 4 patents #173 of 1,085Top 20%
MCMatsuo Electric Co.: 2 patents #2 of 17Top 15%
Panasonic: 2 patents #9,726 of 21,108Top 50%
Kabushiki Kaisha Toshiba: 1 patents #13,641 of 21,451Top 65%
MCMita Industrial Co.: 1 patents #653 of 891Top 75%
OUOsaka University: 1 patents #681 of 1,984Top 35%
Osaka, JP: #1,694 of 24,344 inventorsTop 7%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Koichi Baba has been granted 24 US patents while listed as an inventor at Sony. The first was granted in 1999 and the most recent in January 2025. Koichi Baba ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Koichi Baba in Osaka, JP.

Patents per Year

Patents granted per year, 1999 to 2025Bar chart with a peak of 3 patents in 2004.peak 31999: 2 patents19992001: 1 patents2002: 1 patents20022004: 3 patents2005: 1 patents20052006: 1 patents2008: 3 patents20082009: 1 patents2010: 1 patents20102011: 1 patents2014: 1 patents20142016: 2 patents2017: 1 patents20172019: 1 patents2020: 1 patents20202023: 1 patents2024: 1 patents20242025: 1 patents2025

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12202218 Method for producing lens to be fitted to eye and lens to be fitted to eye Kohji Nishida, Shizuka Koh, Kei Ohkubo, Haruyasu ASAHARA, Tsuyoshi Inoue +2 more 2025-01-21
12119359 Imaging device 2024-10-15 $654,000
11569287 Semiconductor device and electronic appliance Takashi Kubodera, Toshihiko Miyazaki, Hiroaki Ammo 2023-01-31 $586,000
10841521 Information processing device, information processing method, and program Taiichiro Watanabe, Hirokazu Ejiri 2020-11-17 $1,031,000
10431620 Semiconductor device and electronic appliance Takashi Kubodera, Toshihiko Miyazaki, Hiroaki Ammo 2019-10-01 $678,000
9818784 Semiconductor device and electronic appliance Takashi Kubodera, Toshihiko Miyazaki, Hiroaki Ammo 2017-11-14 $526,000
9368539 Semiconductor device with atom diffusion barrier layer and method of manufacturing semiconductor device with atom diffusion barrier layer Masaaki Bairo, Hirokazu Ejiri 2016-06-14 $573,000
9362325 Semiconductor device and electronic appliance Takashi Kubodera, Toshihiko Miyazaki, Hiroaki Ammo 2016-06-07 $328,000
8794451 Hollow-fiber ultrafiltration membrane with excellent fouling resistance Kenta Kochi, Tsuyoshi Hoshiyama, Hideki Sugihara, Akihiro Ariji, Hideki Yamada 2014-08-05
8070947 Permselective membrane module and method for manufacturing the same Toshiyuki Yagi 2011-12-06
7853162 Fixing device having a variable rotation speed rotatable heating section and image forming device Hideki Tatematsu, Yukio Arai 2010-12-14 $96,000
7473871 Heating apparatus, fixing apparatus and image forming apparatus Noriyuki Tajima, Akihiro Yasuda, Keisuke Fujimoto, Shigemitsu Tani, Masayuki Isayama 2009-01-06 $396,000
7388595 Fixing device and temperature control method Akihiro Yasuda, Noriyuki Tajima, Hideki Tatematsu, Shigemitsu Tani 2008-06-17 $965,000
D561300 Case for separation membrane 2008-02-05
D561299 Case for separation membrane 2008-02-05
7055922 Applying voltages to an ink jet printhead Kouji Ikeda, Masaharu Oyama 2006-06-06 $239,000
6969138 Ink jet recording apparatus Kouji Ikeda, Masaichiro Tatekawa 2005-11-29 $505,000
6793311 Ink jet recording apparatus Koji Ikeda, Koji Matsuo, Masashi Tomita, Masaharu Oyama, Masaichiro Tatekawa 2004-09-21 $146,000
6783212 Ink jet head and ink jet recording apparatus Kouji Ikeda, Masaharu Oyama 2004-08-31 $139,000
6736479 Ink jet recording apparatus Koji Ikeda, Koji Matsuo, Masashi Tomita, Masaharu Oyama, Masaichiro Tatekawa 2004-05-18 $222,000
6467142 Method for manufacturing chip capacitor Michihiro Shirashige, Hidemasa Ichiki, Kazuto Okada, Takayoshi Oka 2002-10-22
6262878 Chip capacitor Michihiro Shirashige, Hidemasa Ichiki, Kazuto Okada, Takayoshi Oka 2001-07-17
5895226 Method of manufacturing semiconductor device Maiko Suzaki 1999-04-20
5886717 Printing head for an ink jet printer with titanium plate comb Kenichi Satake, Kikunosuke Tsuji, Takeshi Watanabe, Setsuo Hori, Yoko Ohba 1999-03-23