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For the Inventor, By the Inventor

Yamagata, Japan

Tohoku Pioneer Corporation

Calculating rank
USPTO Granted Patents = 294

% Expired Patents = 58.5


Forward Citations = 1,207

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274 inventors (with patents filed for the assignee):

goldMedal Toshinao Yuki (24 out of 25 patents)

silverMedal Shintaro Niidera (18 out of 18 patents)

bronzeMedal Yuji Saito (18 out of 20 patents)

4.  Hiroki Tan (16 out of 21 patents)

5.  Satoshi Hachiya (16 out of 21 patents)

6.  Hiroyuki Kobayashi (16 out of 38 patents)

7.  Shinsuke Tanaka (14 out of 16 patents)

8.  Shinji Nakajima (13 out of 15 patents)

9.  Minoru Horigome (13 out of 15 patents)

10.  Shuichi Seki (12 out of 12 patents)

11.  Katsuhiro Kanauchi (11 out of 11 patents)

12.  Teruaki Kaiya (11 out of 11 patents)

13.  Takayoshi Yoshida (11 out of 14 patents)

14.  Makoto Abe (10 out of 10 patents)

15.  Hiroyuki Dohi (10 out of 11 patents)


Core Competencies:
Speaker Device
Vehicle Lighting
Light-Emitting Device
Sound Generation
Acoustic Conversion
Display Device
Electronic Device
Optical Device
Sound Reproducing
Organic Electroluminescent
Speaker System
Input Device

294 patents:

1. 12563344 - Speaker device (2026-02-24),
2. 12538059 - Speaker device (2026-01-27),
3. 12526561 - Speaker bracket, speaker frame, and speaker (2026-01-13),
4. 12340081 - Vehicle lighting device (2025-06-24),
5. 12063464 - Speaker bracket, speaker frame, and speaker (2024-08-13),
6. 12058882 - Light emitting apparatus (2024-08-06),
7. 12058502 - Speaker device (2024-08-06),
8. 11950333 - Light-emitting module (2024-04-02),
9. 11943964 - Light-emitting device including a light-transmitting interconnect located over a substrate (2024-03-26),
10. 11937346 - Light emitting device (2024-03-19),
11. 11914246 - Display device (2024-02-27),
12. 11899920 - Vehicle lighting device (2024-02-13),
13. 11864409 - Light-emitting device (2024-01-02),
14. 11671758 - Speaker device (2023-06-06),
15. 11644965 - Vehicle lighting device (2023-05-09),
Company Overview
Tohoku Pioneer Corporation, based in Yamagata, Japan, specializes in advanced speaker technology and related electronic devices. The company focuses on the development and manufacturing of high-quality speaker devices, sound generation systems, and acoustic conversion technologies. Additionally, Tohoku Pioneer is involved in the innovation of vehicle lighting, light-emitting devices, and optical displays, positioning itself as a key player in the audio and visual technology sectors. Its commitment to research and development drives advancements in both consumer and automotive applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

294 Patents

#1 in Yamagata

#550 in Japan

#3,043 in the World

Yamagata, JP
Yamagata, Japan

Tohoku Pioneer Corporation

Forward Citations = 1,207

274 inventors:

goldMedal Toshinao Yuki (24 out of 25 patents)

silverMedal Shintaro Niidera (18 out of 18 patents)

bronzeMedal Yuji Saito (18 out of 20 patents)

4.  Hiroki Tan (16 out of 21 patents)

5.  Satoshi Hachiya (16 out of 21 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tohoku Pioneer Corporation. Retrieved from https://idiyas.com/company/tohoku-pioneer

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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