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For the Inventor, By the Inventor

Tokyo, Japan

Teac Corporation


USPTO Granted Patents = 1,030

% Expired Patents = 19.7


Trademarks = 18

Forward Citations = 7,678

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443 inventors (with patents filed for the assignee):

goldMedal Masafumi Ito (187 out of 198 patents)

silverMedal Shigeru Hasegawa (104 out of 111 patents)

bronzeMedal Minoru Sube (91 out of 92 patents)

4.  Haruki Takita (75 out of 76 patents)

5.  Akira Mashimo (71 out of 84 patents)

6.  Hiroyuki Watanabe (69 out of 70 patents)

7.  Hiroshi Tsuyuguchi (53 out of 54 patents)

8.  Katsuhiro Takashima (53 out of 53 patents)

9.  Yukio Iikura (49 out of 50 patents)

10.  Hidetoshi Kabasawa (43 out of 100 patents)

11.  Yasunobu Shimizu (36 out of 74 patents)

12.  Takahiro Sakaguchi (30 out of 40 patents)

13.  Yoshiaki Sakai (29 out of 29 patents)

14.  Takashi Watanabe (28 out of 34 patents)

15.  Shinichi Fujisawa (26 out of 50 patents)


Core Competencies:
Audio Recorder
Digital Mixer
Multitrack Recorder
Audio Signal Processor
Wireless LAN Function
Playback Device
Sound Image Localization
Electronic Device
Audio Equipment
Control Device
Portable Recording
Stereo Microphone

1,030 patents:

1. 12096188 - Audio recorder (2024-09-17),
2. 11785381 - Audio recorder (2023-10-10),
3. 11625220 - Digital mixer having plurality of displays (2023-04-11),
4. 11516933 - Mounting structure of leg member, and electronic apparatus (2022-11-29),
5. 11418872 - Recording and playback device (2022-08-16),
6. 11150867 - Mixing console (2021-10-19),
7. 11003416 - Audio apparatus (2021-05-11),
8. 10924706 - Audio device (2021-02-16),
9. 10754610 - Target position setting apparatus and sound image localization apparatus (2020-08-25),
10. 10732923 - Information processor, audio device, and program (2020-08-04),
11. 10579326 - Control device (2020-03-03),
12. 10509623 - Audio signal processor (2019-12-17),
13. 10403453 - Electronic device (2019-09-03),
14. 10403253 - Portable recording/reproducing apparatus with wireless LAN function and recording/reproduction system with wireless LAN function (2019-09-03),
15. 10397333 - Recording/reproducing apparatus with wireless LAN function (2019-08-27),
Company Overview
Teac Corporation, headquartered in Tokyo, specializes in audio technology, focusing on the development and manufacturing of high-quality audio equipment. The company is known for its innovative products, including audio recorders, digital mixers, and multitrack recorders, which cater to both professional and consumer markets. Teac also explores advanced technologies such as audio signal processing and sound image localization, enhancing the auditory experience across various applications. Its commitment to quality and innovation positions it as a leader in the audio technology sector.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Teac Corporation USPTO Patent Assignee Logo
1,030 Patents

#115 in Tokyo

#226 in Japan

#994 in the World

Tokyo, JP
Tokyo, Japan

Teac Corporation

Forward Citations = 7,678

443 inventors:

goldMedal Masafumi Ito (187 out of 198 patents)

silverMedal Shigeru Hasegawa (104 out of 111 patents)

bronzeMedal Minoru Sube (91 out of 92 patents)

4.  Haruki Takita (75 out of 76 patents)

5.  Akira Mashimo (71 out of 84 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Teac Corporation. Retrieved from https://idiyas.com/company/teac

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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