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USPTO Patent Rankings Data through Dec 31, 2025
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Naoki Seki — 25 Patents

IHIhi: 13 patents #31 of 1,178Top 3%
YEYokogawa Electric: 4 patents #184 of 1,441Top 15%
YWYokogawa Electric Works: 2 patents #6 of 44Top 15%
Panasonic: 2 patents #9,726 of 21,108Top 50%
EBEbara: 2 patents #752 of 1,611Top 50%
RIRiken: 1 patents #679 of 1,824Top 40%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
Tokyo, JP: #5,699 of 90,295 inventorsTop 7%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Naoki Seki has been granted 25 US patents while listed as an inventor at Ihi. The first was granted in 1982 and the most recent in December 2025. Naoki Seki ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Naoki Seki in Tokyo, JP.

Patents per Year

Patents granted per year, 1982 to 2025Bar chart with a peak of 5 patents in 2025.peak 51982: 1 patents19821983: 1 patents1998: 1 patents19982001: 1 patents2004: 1 patents20042007: 2 patents2010: 1 patents20102015: 1 patents2016: 1 patents20162018: 1 patents2021: 1 patents20212022: 3 patents2023: 2 patents20232024: 3 patents2025: 5 patents2025

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDate
12506141 Negative electrode active material for secondary batteries, and secondary battery using same Yuichiro Saito 2025-12-23
12441474 Energy recovery device for aircraft Hideo Sugawara, Yasunori NIHEI, Hitoshi Oyori 2025-10-14
12410791 Fuel supply system and fuel supply method for aircraft gas turbine engine Hirotaka SUGAWARA 2025-09-09
12348083 Electric motor stator and electric motor Fuminori Suzuki 2025-07-01
12191717 Rotor with cooling fluid flow channels formed in permanent magnets Fuminori Suzuki 2025-01-07
12097961 Aircraft air conditioning device Toshikazu Kobayashi 2024-09-24
11867119 Electric generator and multi-shaft gas turbine engine for aircraft equipped with electric generator — 2024-01-09
11867124 Fuel supply control device Akihiro SHIMAMURA, Hirotaka SUGAWARA, Yasuhiko Yamamoto 2024-01-09
11791691 Generator cooling system for turbo-fan engine Toshikazu Kobayashi, Shotaro Ishii 2023-10-17
11732711 External gear pump Masahiro Tanida, Takashi Sato, Kenji Takamiya, Akihiro SHIMAMURA 2023-08-22
11408344 Cooling system for aircraft gas turbine engine Fuminori Suzuki, Toshikazu Kobayashi 2022-08-09
11365683 Fuel supply control device Yasuhiko Yamamoto, Akihiro SHIMAMURA 2022-06-21
11352959 Fuel supply control device Yasuhiko Yamamoto 2022-06-07
11162429 Turbo fan engine Akihiko Oyama, Noriko Morioka 2021-11-02
9999164 Cooling apparatus for cooling electronic device in aircraft Hiroyuki Kimura, Shinsuke Matsuno, Noriko Morioka 2018-06-12
9269507 Spring load adjustment structure of contact device and spring load adjustment method of contact device Hideki Enomoto, Hirokazu Asakura, Tetsuya Yamada, Ritsu Yamamoto, Toshiyuki Shima +2 more 2016-02-23
9061280 Chemical reaction cartridge, its fabrication method, and a chemical reaction cartridge drive system Takeo Tanaami, Hisao Katakura, Saya Satou 2015-06-23
7854897 Chemical reaction cartridge, its fabrication method, and a chemical reaction cartridge drive system Takeo Tanaami, Hisao Katakura, Saya Satou 2010-12-21
7283306 Confocal optical scanner Kenta Mikuriya, Takeo Tanaami, Takeharu Nagai, Atsushi Miyawaki 2007-10-16
7190514 Confocal scanning microscope Kenta Mikuriya, Yasuhiro Tanibata, Hideomi Negishi, Yasuhito Kosugi 2007-03-13
6828141 Method for purifying matter contaminated with halogenated organic compounds Naoaki Kataoka, Tatsuo Shimomura, Nobumitsu Kitajima, Hiroshi Shinmura 2004-12-07
6303367 Method for purifying matter contaminated with halogenated organic compounds Naoaki Kataoka, Tatsuo Shimomura, Nobumitsu Kitajima, Hiroshi Shinmura 2001-10-16
5794150 Inter-zone connection communication method and system Seiko Ikeuchi 1998-08-11
4385255 Linear array ultrasonic transducer Keiki Yamaguchi, Shinichi Sano, Masami Imamoto 1983-05-24
4319489 Ultrasonic diagnostic method and apparatus Keiki Yamaguchi, Yasuhito Takeuchi, Toru Shimazaki 1982-03-16

Frequent Collaborators

Akihiro SHIMAMURA3 shared
Yasuhiko Yamamoto3 shared
Toshikazu Kobayashi3 shared
Takeo Tanaami3 shared
Fuminori Suzuki3 shared
Hirotaka SUGAWARA2 shared

Nearby-Ranked Inventors

John C. Colborn25
Yair A. Neumann25
Eli DAVID25
Olaf Thomas Johan Antonie Vermeulen25
Azadeh Afshar Bakooshli25
Sandeep Bajaj25
Alexander J. Fioravanti25
Joon Hwan Lee25
Akio Murayama25