Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AF

Akira Fujishima

UNUnknown: 22 patents #172 of 83,584Top 1%
TLTakeda Pharmaceutical Company Limited: 10 patents #147 of 1,531Top 10%
CCCentral Japan Railway Comany: 9 patents #5 of 313Top 2%
TOToto: 8 patents #130 of 1,113Top 15%
Sumitomo Electric Industries: 7 patents #3,987 of 21,551Top 20%
KTKanagawa Academy Of Science And Technology: 5 patents #6 of 105Top 6%
TITakeda Chemical Industries: 4 patents #297 of 1,420Top 25%
IKIshihara Sangyo Kaisha: 3 patents #132 of 403Top 35%
TTThe University Of Tokyo: 3 patents #321 of 2,633Top 15%
TATakenaka: 3 patents #9 of 199Top 5%
NCNippon Soda Co.: 3 patents #145 of 648Top 25%
ACAisin Aw Co.: 2 patents #784 of 2,011Top 40%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
KRKabushikikaisha Equos Research: 2 patents #39 of 103Top 40%
Panasonic: 2 patents #9,678 of 21,108Top 50%
OSOlympus Medical Systems: 1 patents #501 of 833Top 65%
MCMitsui Mining & Smelting Co.: 1 patents #444 of 838Top 55%
KCKoyo Engineering Co.: 1 patents #5 of 11Top 50%
KSKobe Steel: 1 patents #937 of 1,773Top 55%
UCUbe-Nitto Kasei Co.: 1 patents #36 of 70Top 55%
PEPentax: 1 patents #515 of 761Top 70%
TCTaiyo Kogyo Co.: 1 patents #8 of 38Top 25%
Overall (All Time): #31,248 of 4,157,543Top 1%
68 Patents All Time

Issued Patents All Time

Showing 26–50 of 68 patents

Patent #TitleCo-InventorsDate
7294365 Method for photocatalytically rendering a surface of a substrate superhydrophilic, a substrate with superhydrophilic photocatalytic surface, and method of making thereof Makoto Hayakawa, Eiichi Kojima, Keiichiro Norimoto, Mitsuyoshi Machida, Atsushi Kitamura +3 more 2007-11-13
7194245 High-frequency signal receiving apparatus Toshihiro Furusawa, Hirotoshi Takeuchi 2007-03-20
7189744 Crystals of benzimidazole compounds Isao Aoki, Keiji Kamiyama 2007-03-13
7187733 High-frequency signal receiver Kenji Adachi, Hirotoshi Takeuchi, Yasuo Oba, Ippei Kanno, Hiroaki Ozeki 2007-03-06
7157840 Illuminating devices employing titanium dioxide photocatalysts Kazuhito Hashimoto, Tomokazu Iyoda, Shigemichi Fukayama, Tetsuo Yoshimoto, Tokuyoshi Saitoh 2007-01-02
7098967 Receiving apparatus Ippei Kanno, Hiroaki Ozeki, Yasuo Oba, Mineyuki Iwaida 2006-08-29
7013124 Wide band tuner Masashi Yasuda 2006-03-14
6939611 Window glass employing titanium dioxide photocatalyst Kazuhito Hashimoto, Tomokazu Iyoda, Shigemichi Fukayama, Tetsuo Yoshimoto, Tokuyoshi Saitoh 2005-09-06
6939971 Benzimidazole compound crystal Isao Aoki, Keiji Kamiyama 2005-09-06
6903122 Crystals of benzimidazole compounds Isao Aoki, Keiji Kamiyama 2005-06-07
6882459 Photoreactive devices, translucent members, ornaments, anticorrosive devices, devices for reducing oxygen and devices for controlling growth of microorganisms Tetsu Tatsuma, Yoshihisa Ohko, Shuichi Saitoh, Katsuhisa Kashiwazaki 2005-04-19
6830785 Method for photocatalytically rendering a surface of a substrate superhydrophilic, a substrate with a superhydrophilic photocatalytic surface, and method of making thereof Makoto Hayakawa, Eiichi Kojima, Keiichiro Norimoto, Mitsuyoshi Machida, Atsushi Kitamura +3 more 2004-12-14
6737145 Organic-inorganic composite graded material, method for preparation thereof and use thereof Toshiya Watanabe, Kazuhito Hashimoto, Kazuyuki Takami, Norihiro Nakayama, Taro Suzuki +3 more 2004-05-18
6664276 Benzimidazole compound crystal Isao Aoki, Keiji Kamiyama 2003-12-16
6608092 Crystals of benzimidazole compounds Isao Aoki, Keiji Kamiyama 2003-08-19
6607673 Method for manufacturing a diamond cylinder array having dents therein Hideki Masuda 2003-08-19
6524664 Photocatalytically hydrophilifying and hydrophobifying material Kazuhito Hashimoto, Toshiya Watanabe, Mitsuhide Shimohigoshi, Makoto Hayakawa 2003-02-25
6498000 Photocatalyst composite and process for producing the same Sadao Murasawa, Hajime Murakami, Yasuro Fukui, Mitsuru Watanabe, Kazuhito Hashimoto 2002-12-24
6462058 Benzimidazole compound crystal Isao Aoki, Keiji Kamiyama 2002-10-08
6387844 Titanium dioxide photocatalyst Kazuhito Hashimoto, Tomokazu Iyoda, Shigemichi Fukayama, Tetsuo Yoshimoto, Tokuyoshi Saitoh 2002-05-14
6350389 Method for producing porous diamond Hideki Masuda 2002-02-26
6309554 Method for producing needle diamond-type structure Hideki Masuda 2001-10-30
6277346 Photocatalyst composite and process for producing the same Sadao Murasawa, Hajime Murakami, Yasuro Fukui, Mitsuru Watanabe, Kazuhito Hashimoto 2001-08-21
6208404 Black matrix Makoto Tomoyori, Kazuhito Hashimoto 2001-03-27
6139803 Photocatalytic air treatment process under room light Toshiya Watanabe, Atushi Kitamura, Eiichi Kojima, Kazuhito Hashimoto 2000-10-31