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USPTO Patent Rankings Data through Dec 31, 2025
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Hiroki Katoh — 13 Patents

Tdk: 9 patents #675 of 3,796Top 20%
Brother Kogyo: 3 patents #1,626 of 2,767Top 60%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
Kawasaki, JP: #2,146 of 15,035 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Hiroki Katoh has been granted 13 US patents while listed as an inventor at Tdk. The first was granted in 2017 and the most recent in November 2024. Hiroki Katoh ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Hiroki Katoh in Kawasaki, JP.

Patents per Year

Patents granted per year, 2017 to 2024Bar chart with a peak of 2 patents in 2017.peak 22017: 2 patents20172018: 2 patents20182019: 1 patents20192020: 1 patents20202021: 2 patents20212022: 2 patents20222023: 1 patents20232024: 2 patents2024

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
12137614 Piezoelectric composition, piezoelectric element, piezoelectric device, piezoelectric transformer, ultrasonic motor, ultrasonic wave-generating element, and filter element Yumi Akiyama 2024-11-05
12096695 Piezoelectric element, piezoelectric actuator, and piezoelectric transformer Yuiko Hirose, Yumi Akiyama 2024-09-17
11659769 Piezoelectric composition and piezoelectric element Masakazu Hirose, Yuiko Hirose 2023-05-23
11271147 Piezoelectric composition and piezoelectric element Masakazu Hirose, Yuiko Hirose, Tamotsu Sasaki, Yuji Umeda 2022-03-08
11239410 Piezoelectric composition and piezoelectric element Yuiko Hirose, Masakazu Hirose 2022-02-01
11195986 Piezoelectric composition and piezoelectric element Yuiko Hirose, Masakazu Hirose 2021-12-07
11005028 Piezoelectric composition and piezoelectric element Yuiko Hirose, Masakazu Hirose, Mirai ISHIDA 2021-05-11
10691040 Abnormal discharge detection circuit for corona chargers — 2020-06-23
10268151 Image forming apparatus having photoconductor and method of controlling the same Masamitsu Takahashi, Masahito Hamaya, Yudai Minami, Katsumi Inukai 2019-04-23
10050922 Server and method for processing email messages Hiroaki Takahashi, Michio Masuno, Kazuhiro Hayashi 2018-08-14
9905749 Piezoelectric composition and piezoelectric device — 2018-02-27
9835969 Image forming apparatus having a plurality of selectively charged photosensitive bodies and controlling method for same Masamitsu Takahashi, Masahito Hamaya 2017-12-05
9831418 Piezoelectric composition and piezoelectric element Taku Masai, Masahito Furukawa 2017-11-28

Frequent Collaborators

Yuiko Hirose6 shared
Masakazu Hirose5 shared
Masamitsu Takahashi2 shared
Yumi Akiyama2 shared
Masahito Hamaya2 shared
Hiroaki Takahashi1 shared

Nearby-Ranked Inventors

Jianping Shen13
Eric John Telfeyan13
George R. Breiwa, III13
Thomas Sugar13
Andrew Howley13
Howard Halpern13
Po-Yuan Wang13
Douglas Vanesko13
Tanuj Trivedi13