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

Ryohei Yamada

Canon: 6 patents #8,497 of 19,416Top 45%
DADaicel: 4 patents #85 of 523Top 20%
FCFurukawa Electric Co.: 4 patents #473 of 2,370Top 20%
UAUacj: 4 patents #41 of 238Top 20%
DIDaicel Chemical Industries: 1 patents #476 of 893Top 55%
FIFujifilm Business Innovation: 1 patents #1,029 of 1,659Top 65%
Overall (All Time): #281,933 of 4,157,543Top 7%
16 Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
12394440 Magnetic disk device and method for manufacturing magnetic disk device Kotaro KITAWAKI, Shinpei Todo, Hideyuki Hatakeyama 2025-08-19
12263676 Printing element board and printing apparatus including printing element board Toshio Negishi 2025-04-01
12205616 Impact resistant magnetic disk device and method for manufacturing impact resistant magnetic disk device Kotaro KITAWAKI, Shinpei Todo, Hideyuki Hatakeyama 2025-01-21
12087342 Aluminum alloy disc blank for magnetic disc and magnetic disc Kotaro KITAWAKI, Ryo Sakamoto, Wataru Kumagai, Hideyuki Hatakeyama, Shinpei Todo +1 more 2024-09-10
11935559 Magnetic disk device Naoki Kitamura, Kotaro KITAWAKI, Hideyuki Hatakeyama, Toshihiro Nakamura 2024-03-19
11842006 Information processing apparatus 2023-12-12
11550526 Image forming system that suitably carries out communication using mobile communication system, control method therefor, and storage medium Makoto Arima, Kazuhiro Oyoshi, Yoshikazu Sato, MIZUKI WAKABAYASHI 2023-01-10
11487511 Information processing apparatus and non-transitory computer readable medium 2022-11-01
11429326 Image forming system and image forming apparatus Masahiro Takizawa 2022-08-30
10832727 Information processing apparatus 2020-11-10
10832882 Electric circuit breaker device Tomohide FUJIWARA, Toshiyuki Sakai 2020-11-10
10806863 Needleless syringe Tomohide FUJIWARA, Yuzo Yamamoto 2020-10-20
10060452 Pyrotechnic actuator mechanism, syringe and igniter assembly Takaya Masumoto 2018-08-28
10036618 Igniter Takaya Masumoto 2018-07-31
9614402 Power transmission apparatus, power reception apparatus, wireless power feeding system, and control method thereof 2017-04-04
7125041 Gas generator Kazuhiro Kato, Shingo Oda, Hiroshi Harada 2006-10-24