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Ryuichi Natsui — 49 Patents

Panasonic: 48 patents #240 of 21,108Top 2%
TTThe University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
Osaka, JP: #543 of 24,344 inventorsTop 3%
Overall (All Time): #55,592 of 4,157,543Top 2%
49 Patents All Time
Ryuichi Natsui has been granted 49 US patents while listed as an inventor at Panasonic. The first was granted in 2015 and the most recent in December 2025. Ryuichi Natsui ranks #55,592 of 4,157,543 US inventors in our database (top 1.3%). Patent records list Ryuichi Natsui in Osaka, JP.

Issued Patents All Time

Showing 1–25 of 49 patents

Patent #TitleCo-InventorsDate
12512459 Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery Junko Matsushita, Mitsuhiro Hibino, Kensuke Nakura 2025-12-30
12489153 Method for charging nonaqueous electrolyte secondary cell having lithium-transition metal positive electrode active material Mitsuhiro Hibino, Kensuke Nakura 2025-12-02
12347858 Positive electrode active material and battery including the same Shuhei Uchida, Kensuke Nakura 2025-07-01
12322798 Positive electrode active material for secondary battery, and secondary battery Mitsuhiro Hibino 2025-06-03
12080872 Positive electrode active material and battery comprising the same Kensuke Nakura 2024-09-03
12057564 Positive electrode active material and battery including the same Shuhei Uchida, Kensuke Nakura 2024-08-06
11955630 Positive electrode active material and battery including the same TAKANORI OMAE, Issei Ikeuchi, Kensuke Nakura 2024-04-09
11955622 Positive electrode active material and battery comprising the same Kensuke Nakura 2024-04-09
11923529 Positive electrode active material and battery including same Kensuke Nakura 2024-03-05
11799067 Battery Takayuki Nakatsutsumi, Nobuhiko Hojo 2023-10-24
11721800 Battery Takayuki Nakatsutsumi, Nobuhiko Hojo 2023-08-08
11710816 Battery Takayuki Nakatsutsumi, Nobuhiko Hojo 2023-07-25
11637277 Positive-electrode active material and battery Kensuke Nakura 2023-04-25
11637287 Positive electrode material and battery using same YUTA SUGIMOTO, IZURU SASAKI, Akinobu Miyazaki 2023-04-25
11605814 Positive-electrode active material containing lithium composite oxide, and battery including the same Kensuke Nakura, Junko Matsushita, Issei Ikeuchi 2023-03-14
11588143 Battery Hirotetsu Suzuki, Nobuhiko Hojo 2023-02-21
11569492 Positive-electrode active material and battery Kensuke Nakura 2023-01-31
11557760 Positive-electrode active material containing lithium composite oxide, and battery including the same Kensuke Nakura, Junko Matsushita, Issei Ikeuchi 2023-01-17
11545657 Cathode active material including lithium composite oxide having a layered crystal structure TAKANORI OMAE, Yu Otsuka, Shuhei Uchida 2023-01-03
11271200 Positive-electrode active material containing lithium composite oxide, and battery including the same Kensuke Nakura, Junko Matsushita, Issei Ikeuchi 2022-03-08
11233237 Positive electrode active material containing lithium composite oxide and battery including the same TAKANORI OMAE, Takayuki Ishikawa, Kensuke Nakura 2022-01-25
11228033 Cathode active material, and battery using the same Kensuke Nakura, Shuhei Uchida, Takuji Tsujita 2022-01-18
11201319 Positive electrode active material containing lithium composite oxide and covering material, and battery including positive electrode active material Takayuki Ishikawa, Kensuke Nakura 2021-12-14
11183684 Cathode active material and battery using the same Takuji Tsujita, Kensuke Nakura, Shuhei Uchida 2021-11-23
11171327 Positive electrode active material containing lithium composite oxide and covering material and battery Takayuki Ishikawa, Issei Ikeuchi, Kensuke Nakura 2021-11-09

Nearby-Ranked Inventors

Kunihide Kaji49
Miles Nurnberger49
Yi-Ching Wang49
Lin Liu49
Daniel John Smith49
Xin Fang49
Jae-Seob Lee49
Christof Huber49
Ming Xu49