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

Tetsuo Kobayashi — 57 Patents

Hitachi: 15 patents #2,639 of 28,497Top 10%
HKHamamatsu Photonics K.K.: 9 patents #234 of 1,436Top 20%
KUKyoto University: 9 patents #34 of 1,688Top 3%
Sony: 7 patents #6,060 of 25,231Top 25%
Canon: 6 patents #8,549 of 19,416Top 45%
KOKomatsu: 4 patents #479 of 2,087Top 25%
RKRikagaku Kenkyusho: 3 patents #17 of 207Top 9%
SUSubaru: 2 patents #413 of 1,436Top 30%
Nissan Motor Co.: 2 patents #3,090 of 8,689Top 40%
HCHidan Co.: 2 patents #5 of 17Top 30%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
Nec: 1 patents #7,928 of 14,502Top 55%
NSNippon Cable System: 1 patents #25 of 90Top 30%
SCShinko-Pfaudler Company: 1 patents #6 of 19Top 35%
SUSubaru: 1 patents #819 of 1,684Top 50%
SCSumitomo Osaka Cement Co.: 1 patents #199 of 327Top 65%
Overall (All Time): #42,642 of 4,157,543Top 2%
57 Patents All Time
Tetsuo Kobayashi has been granted 57 US patents while listed as an inventor at Hitachi. The first was granted in 1982 and the most recent in September 2025. Tetsuo Kobayashi ranks #42,642 of 4,157,543 US inventors in our database (top 1.0%). Patent records list Tetsuo Kobayashi in Kyoto, NJ, JP.

Patents per Year

Patents granted per year, 1982 to 2025Bar chart with a peak of 4 patents in 2001.peak 41982: 2 patents19821985: 1 patents1986: 1 patents1988: 3 patents19881989: 2 patents1990: 3 patents1991: 3 patents19911992: 1 patents1993: 3 patents1994: 1 patents19941995: 1 patents1997: 1 patents1998: 2 patents19981999: 3 patents2000: 3 patents2001: 4 patents20012002: 1 patents2003: 2 patents2005: 1 patents20052007: 1 patents2011: 2 patents2015: 1 patents20152016: 3 patents2018: 1 patents2019: 1 patents20192021: 1 patents2022: 1 patents2023: 2 patents20232024: 4 patents2025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 57 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12426796 Brain measurement apparatus Takahiro Moriya, Takenori Oida, Akinori Saito, Motohiro Suyama 2025-09-30
12262974 Brain measurement apparatus and brain measurement method Takenori Oida, Takahiro Moriya, Akinori Saito, Motohiro Suyama 2025-04-01
12078139 Vehicle with electric power supply control Akashi Yoshizawa, Takashi Inoue, Shinya Kurasawa 2024-09-03
11957472 Brain measurement apparatus and brain measurement method Takahiro Moriya, Takenori Oida, Akinori Saito, Motohiro Suyama 2024-04-16
11914012 Brain measurement apparatus and brain measurement method Takenori Oida, Takahiro Moriya, Akinori Saito, Motohiro Suyama 2024-02-27
11874348 Brain measurement system Takenori Oida, Takahiro Moriya, Akinori Saito, Motohiro Suyama 2024-01-16
11835603 Optically pumped magnetometer having lasers and optical systems used to derive an intensity of a magnetic field Akinori Saito, Takahiro Moriya, Takenori Oida, Motohiro Suyama 2023-12-05
11619689 Optically pumped magnetometer having reduced footprint Akinori Saito, Takahiro Moriya, Takenori Oida, Motohiro Suyama 2023-04-04
11500043 Magnetoencephalograph Akinori Saito, Takahiro Moriya, Takenori Oida, Motohiro Suyama 2022-11-15
11099245 Cell for optically pumped magnetic sensor Norihisa Kato, Motohiro Suyama 2021-08-24
10288701 Optically pumped atomic magnetometer and magnetic sensing method Yosuke Ito, Sunao Ichihara, Natsuhiko Mizutani 2019-05-14 $22,000
9964609 Optically pumped magnetometer Sunao Ichihara, Natsuhiko Mizutani, Shuji Taue 2018-05-08 $25,000
9383419 Magnetic gradiometer and magnetic sensing method Natsuhiko Mizutani 2016-07-05 $38,000
9310220 Onboard display device Mitsunori Ishii, Masato Sakurai 2016-04-12
9244137 Optical pumping magnetometer and magnetic sensing method Akira Terao 2016-01-26 $27,000
8941377 Optically pumped magnetometer and magnetic sensing method Natsuhiko Mizutani 2015-01-27 $36,000
8054074 Atomic magnetometer and magnetic force measuring method Sunao Ichihara, Natsuhiko Mizutani, Hideyuki Sugioka, Kiyoshi Ishikawa, Shuji Taue 2011-11-08 $243,000
7892666 Case for film-covered electrical device and film-covered electrical device assemblage Hisako Nakano, Takaaki Fujitani 2011-02-22
RE39959 Communication terminal apparatus and control method thereof Fukuharu Sudo, Takushi Kunihiro, Atsushi Ajiro, Kentaro Odaka, Tatsuji Ushino +1 more 2007-12-25
6857494 Steering-wheel revolution number correction system of all-wheel-drive vehicle Kazuhito Nishimaki 2005-02-22
6595898 Working vehicle and vehicle speed control method thereof, variable power engine and power setting method thereof, and vehicle with variable power engine and power control method thereof Hitoshi Takahashi, Kazuhito Nishimaki 2003-07-22
6565482 Working vehicle and vehicle speed control method thereof, variable power engine and power setting method thereof, and vehicle with variable power engine and power control method thereof Hitoshi Takahashi, Kazuhito Nishimaki 2003-05-20
6371885 Working vehicle and vehicle speed control method thereof, variable power engine and power setting method thereof, and vehicle with variable power engine and power control method thereof Hitoshi Takahashi, Kazuhito Nishimaki 2002-04-16
6293065 High strength porous concrete structure and method of manufacturing the high strength porous concrete structure Hiroaki Suzuki, Kikuo Tachibana, Tatsuji Tanahashi 2001-09-25
6275360 Read-write head Kazuhiro Nakamoto, Takashi Kawabe, Shun-ichi Marumi, Shinji Narishige, Takao Imagawa 2001-08-14 $251,000