Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
HA

Hirofumi Aoki — 88 Patents

Nec: 45 patents #105 of 14,502Top 1%
FCFurukawa Electric Co.: 22 patents #40 of 2,370Top 2%
Nissan Motor Co.: 6 patents #1,257 of 8,689Top 15%
Toyota: 5 patents #5,736 of 26,838Top 25%
SLShiseido Company, Limited: 4 patents #179 of 1,112Top 20%
SKShowa Denko K.K.: 3 patents #463 of 1,736Top 30%
Bridgestone: 3 patents #795 of 2,860Top 30%
NTNuflare Technology: 1 patents #192 of 298Top 65%
Denso: 1 patents #6,940 of 11,792Top 60%
The General Hospital: 1 patents #1,411 of 3,021Top 50%
Overall (All Time): #18,739 of 4,157,543Top 1%
88 Patents All Time
Hirofumi Aoki has been granted 88 US patents while listed as an inventor at Nec. The first was granted in 1986 and the most recent in August 2025. Hirofumi Aoki ranks #18,739 of 4,157,543 US inventors in our database (top 0.45%). Patent records list Hirofumi Aoki in Tokyo, MH, JP.

Patents per Year

Patents granted per year, 1986 to 2025Bar chart with a peak of 11 patents in 2018.peak 111986: 1 patents19861993: 3 patents1994: 2 patents19941999: 1 patents2002: 1 patents20022003: 1 patents2008: 1 patents20082012: 2 patents2014: 1 patents20142015: 2 patents2016: 7 patents20162017: 5 patents2018: 11 patents20182019: 5 patents2020: 8 patents20202021: 6 patents2022: 9 patents20222023: 9 patents2024: 8 patents20242025: 5 patents2025

Issued Patents All Time

Showing 1–25 of 88 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12398957 Heat transport device Yosuke Watanabe 2025-08-26
12369274 Vapor chamber Yoshikatsu Inagaki, Kenya Kawabata 2025-07-22
12345481 Cold plate and method of manufacturing cold plate Yuki Machida, Shuta HIKICHI, Kenya Kawabata 2025-07-01
12295121 Heat sink Yosuke Watanabe 2025-05-06
12219151 Video encoding device performing entropy-encoding process for inter prediction unit partition type syntax Kenta Senzaki, Yuzo Senda, Keiichi Chono 2025-02-04
12117243 Vapor chamber Yoshikatsu Inagaki, Kenya Kawabata 2024-10-15
12108570 Vapor chamber Yoshikatsu Inagaki, Kenya Kawabata 2024-10-01
12078423 Vapor chamber with multilayer wick Yoshikatsu Inagaki, Daiki TAKEMURA, Hiroshi Okada, Kazuaki Aotani 2024-09-03
12070322 Method for determining skin condition based on thermal sensitivity in skin Ki Sai, Shigeyoshi Fujiwara, Takeshi Hariya 2024-08-27
12058841 Cooling device and cooling system using cooling device Yoshikatsu Inagaki, Yoshinori Nakamura, Hideaki KAWABATA 2024-08-06
11943449 Video decoding device, and video encoding method performing entropy-decoding process for inter prediction unit partition type syntax Kenta Senzaki, Yuzo Senda, Keiichi Chono 2024-03-26
11933543 Heat sink Kenya Kawabata, Masahiro Meguro, Ryo Tsubata, Yoshikatsu Inagaki, Hiroshi Sakai +1 more 2024-03-19
11874068 Vapor chamber Yoshikatsu Inagaki 2024-01-16
11828539 Heat pipe Yoshikatsu Inagaki, Kazuya Takahashi, Shinichi Ito, Shuta HIKICHI 2023-11-28
11706457 Video decoding device, method, and program Keiichi Chono, Masato Tsukada 2023-07-18
11695961 Video decoding device, method, and program Keiichi Chono, Masato Tsukada 2023-07-04
11681036 Image processing apparatus, image processing method, and non-transitory computer readable medium storing image processing program Shreya Sharma, Yuzo Senda, Kenta Senzaki 2023-06-20
11665352 Video encoding device, video decoding device, video encoding method, video decoding method, and program using inter prediction Kenta Senzaki, Yuzo Senda, Keiichi Chono 2023-05-30
11659188 Video encoding device, video decoding device, video encoding method, video decoding method, and program Keiichi Chono, Yuzo Senda, Junji Tajime, Kenta Senzaki 2023-05-23
11659189 Video encoding device, video decoding device, video encoding method, video decoding method, and program Keiichi Chono, Yuzo Senda, Junji Tajime, Kenta Senzaki 2023-05-23
11647205 Video encoding device, video decoding device, video encoding method, video decoding method, and program using inter prediction Kenta Senzaki, Yuzo Senda, Keiichi Chono 2023-05-09
11582461 Video encoding device, video decoding device, video encoding method, video decoding method, and program restricts inter-prediction unit partitions based on coding unit depth Kenta Senzaki, Yuzo Senda, Keiichi Chono 2023-02-14
11509909 Video decoding device and method using inverse quantization Keiichi Chono, Yuzo Senda, Kenta Senzaki 2022-11-22
11496749 Video decoding device and method using inverse quantization Keiichi Chono, Yuzo Senda, Kenta Senzaki 2022-11-08
11483571 Video decoding device and method using inverse quantization Keiichi Chono, Yuzo Senda, Kenta Senzaki 2022-10-25