EK

Eiji Kumakura

DI Daikin Industries: 48 patents #16 of 2,957Top 1%
TT The University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
Overall (All Time): #57,400 of 4,157,543Top 2%
48
Patents All Time

Issued Patents All Time

Showing 1–25 of 48 patents

Patent #TitleCo-InventorsDate
12422171 Refrigeration cycle apparatus Hirofumi DAIGUJI, Arun Majumdar, Wei-Lun Hsu, Jubair Ahmed Shamim 2025-09-23
12422175 Refrigerant cycle system Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Tomoatsu Minamida 2025-09-23
12405036 Heat transfer method Takeru Miyazaki, Teruo Kido, Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata 2025-09-02
12320556 Air conditioner Atsushi Yoshimi, Takuro Yamada, Ikuhiro Iwata, Takeru Miyazaki 2025-06-03
12298046 Air conditioner Atsushi Yoshimi, Takuro Yamada, Ikuhiro Iwata, Takeru Miyazaki 2025-05-13
12253277 Air conditioner Atsushi Yoshimi, Takuro Yamada, Ikuhiro Iwata, Takeru Miyazaki 2025-03-18
12235027 Refrigerant charging method Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata 2025-02-25
12163712 Air conditioner Atsushi Yoshimi, Takuro Yamada, Ikuhiro Iwata, Takeru Miyazaki 2024-12-10
12163707 Refrigeration cycle apparatus and four-way valve Takeru Miyazaki, Hiromune Matsuoka, Atsushi Yoshimi, Ikuhiro Iwata, Tomoatsu Minamida +1 more 2024-12-10
12163706 Refrigeration apparatus Ikuhiro Iwata, Takuro Yamada, Ryuhei Kaji, Tomoki Hirokawa 2024-12-10
12140358 Refrigerant cycle system Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Tomoatsu Minamida 2024-11-12
12092374 Refrigerant cycle system Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Kazuhiro Furusho, Mikio Kagawa +4 more 2024-09-17
12066222 Refrigeration cycle device Ikuhiro Iwata, Kazuhiro Furusho, Ryusuke Fujiyoshi, Hiromune Matsuoka 2024-08-20
12044452 Heat pump device using a non-azeotropic mixture refrigerant Ryuhei Kaji, Atsushi Yoshimi, Masaki Tanaka, Hiroki Ueda, Masaki Nakayama 2024-07-23
12007150 Refrigeration cycle device Ikuhiro Iwata, Kazuhiro Furusho, Ryusuke Fujiyoshi, Hiromune Matsuoka 2024-06-11
11994323 Refrigerant charging method, heat source unit, and renewed refrigeration cycle apparatus Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Shun OHKUBO 2024-05-28
11988426 Refrigerant charging method Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Shun OHKUBO 2024-05-21
11976859 Refrigeration cycle apparatus Hiroki Ueda, Atsushi Yoshimi, Masaki Tanaka, Masaki Nakayama, Ryuhei Kaji 2024-05-07
11976851 Refrigeration cycle device Ikuhiro Iwata, Kazuhiro Furusho, Ryusuke Fujiyoshi, Hiromune Matsuoka 2024-05-07
11971037 Drive shaft of compressor having oil groove portion and oil sump Kazuhiro Furusho 2024-04-30
11959667 Refrigeration cycle device Ikuhiro Iwata, Kazuhiro Furusho, Ryusuke Fujiyoshi, Hiromune Matsuoka 2024-04-16
11920077 Refrigeration cycle device for vehicle Kazuhiro Furusho, Masaru Tanaka, Shun OHKUBO, Mitsushi ITANO, Yuuki YOTSUMOTO +9 more 2024-03-05
11906207 Refrigeration apparatus Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Mitsushi ITANO, Daisuke KARUBE +5 more 2024-02-20
11820933 Refrigeration cycle apparatus Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Mitsushi ITANO, Daisuke KARUBE +5 more 2023-11-21
11739995 Refrigeration cycle device Takuro Yamada, Atsushi Yoshimi, Ikuhiro Iwata, Takeru Miyazaki, Hiromune Matsuoka 2023-08-29