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

Emi Ito — 19 Patents

Tdk: 15 patents #373 of 3,796Top 10%
Yamaha: 2 patents #899 of 2,001Top 45%
TLToyota Central R&D Labs: 1 patents #823 of 1,657Top 50%
Kabushiki Kaisha Toshiba: 1 patents #13,641 of 21,451Top 65%
Yamagata, JP: #14 of 482 inventorsTop 3%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Emi Ito has been granted 19 US patents while listed as an inventor at Tdk. The first was granted in 1998 and the most recent in November 2024. Emi Ito ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Emi Ito in Yamagata, JP.

Patents per Year

Patents granted per year, 1998 to 2024Bar chart with a peak of 6 patents in 2019.peak 61998: 1 patents19981999: 1 patents19992001: 1 patents20012015: 1 patents20152019: 6 patents20192020: 1 patents20202021: 1 patents20212023: 3 patents20232024: 4 patents2024

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
12143089 Common mode filter Yugo Asai, Tsutomu Kobayashi, Daisuke Urabe, Hiroshi Suzuki, Toshio Tomonari 2024-11-12
12073972 Common mode filter Kosuke Kunitsuka, Keigo Higashida, Daisuke Urabe, Yugo Asai 2024-08-27
12040116 Common mode filter Kosuke Kunitsuka, Keigo Higashida 2024-07-16
12020839 Common mode filter Kosuke Kunitsuka, Keigo Higashida 2024-06-25
11817844 Common mode filter Yugo Asai, Tsutomu Kobayashi, Daisuke Urabe, Hiroshi Suzuki, Toshio Tomonari 2023-11-14
11605485 Common mode filter Yugo Asai, Tsutomu Kobayashi, Daisuke Urabe, Hiroshi Suzuki, Toshio Tomonari 2023-03-14
11563415 Common mode filter Yugo Asai, Tsutomu Kobayashi, Daisuke Urabe, Hiroshi Suzuki, Toshio Tomonari 2023-01-24
10958233 Common mode filter Yugo Asai, Tsutomu Kobayashi, Daisuke Urabe, Hiroshi Suzuki, Toshio Tomonari 2021-03-23
10629363 Coil device Syun Ashizawa, Toshio Tomonari, Hirohumi Asou 2020-04-21
10453600 Differential mode filter Tsutomu Kobayashi, Toshio Tomonari, Yuma Koyama 2019-10-22
10389328 Differential mode filter Tsutomu Kobayashi, Toshio Tomonari, Yuma Komaya 2019-08-20
10374568 Common mode filter Tsutomu Kobayashi, Toshio Tomonari, Yuma Koyama 2019-08-06
10277193 Circuit board and electronic circuit module using the same Toshio Tomonari, Tsutomu Kobayashi, Yuma Komaya 2019-04-30
10193516 Common mode filter Tsutomu Kobayashi, Toshio Tomonari, Yuma Koyama 2019-01-29
10186365 Inductor Syun Ashizawa, Toshio Tomonari, Hirohumi Asou 2019-01-22
9209489 Battery and mixed molten liquid Kensuke Takechi, Yoko Hase 2015-12-08
6248944 Apparatus for switching picture items of different types by suitable transition modes 2001-06-19
5978667 Electronic exchange system for portable stations Hirokazu Suzuki, Masakazu Shirakawa, Motohiro Nakano 1999-11-02
5833469 Method of operating a karaoke network system with system program distribution and karaoke network system Kanehisa Tsurumi, Yuichi Murai 1998-11-10