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Foster Electric Company, Limited

USPTO Granted Patents = 68

CIPO Patents = 1

EPO Patents = 8

Trademarks = 2

Forward Citations = 767

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86 inventors (with patents filed for the assignee):

Yusuke Chiba (5 out of 6 patents)

Takayuki Tabata (4 out of 4 patents)

Yoshikazu Okazaki (4 out of 4 patents)

4. Hidetoshi Shirakawa (4 out of 4 patents)

5. Hiroshi Sugata (3 out of 12 patents)

6. Takeshi Yoshimura (3 out of 9 patents)

7. Akinori Matsunaga (3 out of 3 patents)

8. Koichi Yajima (3 out of 22 patents)

9. Hisami Kajiwara (2 out of 2 patents)

10. Takashi Matsumura (2 out of 52 patents)

11. Kenta Yujima (2 out of 2 patents)

12. Hirofumi Onohara (2 out of 2 patents)

13. Teruho Yamada (2 out of 6 patents)

14. Takuro Yamaguchi (2 out of 2 patents)

15. Yoshio Koike (2 out of 2 patents)

Core Competencies:

Speaker Device

Electroacoustic Transducer

Vibration Actuator

Acoustic System

Headphone

Earphone

Driver Module

Oscillatory Actuator

Vehicular Speaker

Thin Speaker

Electroacoustic Converter

Speaker Diaphragm

68 patents: Sort by Forward Citations

1. 12501220 - Speaker and method of producing the same (2025-12-16),

2. 12477275 - Speaker device and acoustic system (2025-11-18),

3. 12477260 - Electrical device (2025-11-18),

4. 12432500 - Speaker magnetic circuit and speaker driver (2025-09-30),

5. 12413889 - Driver holder, driver module, and headset (2025-09-09),

6. 12375848 - Electroacoustic transducer and electroacoustic transducer unit (2025-07-29),

7. 12348944 - Diaphragm for electroacoustic transducer (2025-07-01),

8. 12317020 - Headset (2025-05-27),

9. 12294272 - Oscillatory actuator (2025-05-06),

10. 12285781 - Oscillatory actuator (2025-04-29),

11. 12279097 - Vibration plate and method for manufacturing vibration plate (2025-04-14),

12. 12244200 - Vibration actuator (2025-03-04),

13. 12192725 - Vehicular speaker (2025-01-07),

14. 12185073 - Thin speaker (2024-12-31),

15. 12088998 - Vehicle-mounted woofer device (2024-09-10),

Foster Electric Company, Limited is a leading manufacturer of electronic components, specialized in audio and acoustic products. With a history spanning over 70 years, Foster Electric is committed to delivering high-quality solutions for various industries such as automotive, consumer electronics, and professional audio. Their expertise ranges from designing and producing speakers, headphones, microphones, and other audio technologies, to providing tailored acoustic solutions. Through continuous innovation and dedication to customer satisfaction, Foster Electric has established a strong presence in the global market.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

68 Patents

#595 in Tokyo

#1,402 in Japan

#10,594 in the World

Foster Electric Company, Limited

Forward Citations = 767

86 inventors:

Yusuke Chiba (5 out of 6 patents)

Takayuki Tabata (4 out of 4 patents)

Yoshikazu Okazaki (4 out of 4 patents)

4. Hidetoshi Shirakawa (4 out of 4 patents)

5. Hiroshi Sugata (3 out of 12 patents)

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