Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Hiroshi Oshitani — 46 Patents

Denso: 44 patents #60 of 11,792Top 1%
KMKonica Minolta: 1 patents #1,862 of 2,718Top 70%
KOKonica Minolta Opto: 1 patents #236 of 418Top 60%
NSNippon Soken: 1 patents #783 of 1,540Top 55%
Overall (All Time): #61,298 of 4,157,543Top 2%
46 Patents All Time

Issued Patents All Time

Showing 26–46 of 46 patents

Patent #TitleCo-InventorsDate
7770412 Integrated unit for refrigerant cycle device and manufacturing method of the same Naohisa Ishizaka, Thuya Aung, Yoshiaki Takano, Mika Gocho, Hirotsugu Takeuchi +1 more 2010-08-10
7757514 Ejector-type refrigerant cycle device Hirotsugu Takeuchi, Etsuhisa Yamada, Haruyuki Nishijima 2010-07-20
7726150 Ejector cycle device Haruyuki Nishijima, Hirotsugu Takeuchi, Etsuhisa Yamada, Makoto Ikegami 2010-06-01
7707849 Unit for ejector type refrigeration cycle Naohisa Ishizaka, Hirotsugu Takeuchi, Yoshiaki Takano, Mika Gocho, Haruyuki Nishijima +3 more 2010-05-04
7694529 Refrigerant cycle device with ejector Hirotsugu Takeuchi, Yoshiaki Takano, Mika Gocho 2010-04-13
7654108 Unit for refrigerant cycle device Naohisa Ishizaka, Thuya Aung, Yoshiaki Takano, Mika Gocho, Hirotsugu Takeuchi +1 more 2010-02-02
7520142 Ejector type refrigerating cycle Mika Saito, Hirotsugu Takeuchi, Yoshiaki Takano, Naohisa Ishizaka, Gota Ogata +1 more 2009-04-21
7428826 Ejector cycle device Hirotsugu Takeuchi, Yoshiaki Takano, Mika Saito, Naohisa Ishizaka 2008-09-30
7367200 Ejector cycle device Makoto Ikegami, Hirotsugu Takeuchi, Haruyuki Nishijima, Etsuhisa Yamada, Takuo Maehara 2008-05-06
7340908 Refrigerant cycle device for vehicle Katsuya Kusano, Hirokazu Imai, Hirotsugu Takeuchi, Mika Saito 2008-03-11
7320229 Ejector refrigeration cycle Hirotsugu Takeuchi, Haruyuki Nishijima, Makoto Ikegami, Naoki Yokoyama 2008-01-22
7299645 Ejector cycle and ejector device Hirotsugu Takeuchi, Takayuki Sugiura 2007-11-27
7254961 Vapor compression cycle having ejector Yasushi Yamanaka, Hirotsugu Takeuchi, Katsuya Kusano, Makoto Ikegami, Yoshiaki Takano +2 more 2007-08-14
7207190 Ejector Takayuki Sugiura, Hirotsugu Takeuchi, Hiroshi Watanabe 2007-04-24
7178359 Ejector cycle having multiple evaporators Yasushi Yamanaka, Hirotsugu Takeuchi, Katsuya Kusano, Makoto Ikegami, Yasukazu Aikawa 2007-02-20
7059150 Vapor-compression refrigerant cycle system with ejector Hirofumi Komatsu, Suteo Kobayashi, Katsuya Kusano 2006-06-13
6862897 Vapor-compression refrigerant cycle with ejector Kazuhisa Makida, Hirotsugu Takeuchi 2005-03-08
6834514 Ejector cycle Hirotsugu Takeuchi, Mika Saito 2004-12-28
6729157 Air conditioner with ejector cycle system Hirotsugu Takeuchi 2004-05-04
6550265 Ejector cycle system Hirotsugu Takeuchi, Yasushi Yamanaka 2003-04-22
6438993 Ejector cycle system Hirotsugu Takeuchi, Yoshitaka Kume, Gota Ogata 2002-08-27