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Nippon Gakki Seizo Kabushiki Kaisha

USPTO Granted Patents = 841

Trademarks = 20

Forward Citations = 10,153

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380 inventors (with patents filed for the assignee):

Kenji Yokoyama (51 out of 66 patents)

Akira Nakada (45 out of 64 patents)

Eiichiro Aoki (37 out of 91 patents)

4. Takatoshi Okumura (37 out of 39 patents)

5. Minoru Ogita (33 out of 39 patents)

6. Yasuji Uchiyama (31 out of 32 patents)

7. Hideo Suzuki (26 out of 126 patents)

8. Shigeru Yamada (26 out of 27 patents)

9. Norio Tomisawa (24 out of 29 patents)

10. Akiyoshi Oya (22 out of 24 patents)

11. Masanobu Chibana (19 out of 19 patents)

12. Masatada Wachi (18 out of 36 patents)

13. Takeshi Adachi (18 out of 28 patents)

14. Eisaku Okamoto (18 out of 20 patents)

15. Teruo Hiyoshi (17 out of 21 patents)

Core Competencies:

Video Display Control

Musical Tone Generator

Electronic Musical Instruments

Magnetic Recording

Acoustic Keyboard Instruments

Displacement Detection

Tone Signal Generation

Electronic Drum

Optomagnetic Recording Media

Semiconductor Integrated Circuits

Power Amplifier Circuits

Data Control Systems

841 patents: Sort by Forward Citations

1. 5416497 - Video display control system for animation pattern image (1995-05-16),

2. 5119710 - Musical tone generator (1992-06-09),

3. 5027690 - Electronic musical keyboard instruments with variable touch sensitivity (1991-07-02),

4. 4990389 - Disk for magnetic recording (1991-02-05),

5. D311412 - Combined grand piano keyboard cover and auto-play control unit (1990-10-16),

6. D310679 - Electronic wind instrument (1990-09-18),

7. 4944028 - Non-contact type pattern sensor with variable clearance compensation (1990-07-24),

8. 4939973 - Tone signal generation device having waveshape changing means (1990-07-10),

9. 4939969 - Acoustic keyboard musical instrument (1990-07-10),

10. 4914729 - Method of filling polygonal region in video display system (1990-04-03),

11. 4904349 - Methods for producing optomagnetic recording media and systems for their (1990-02-27),

12. 4903563 - Sound bar electronic musical instrument (1990-02-27),

13. 4897636 - Video display control system for moving display images (1990-01-30),

14. 4892023 - Electronic keyboard percussion instrument (1990-01-09),

15. 4864289 - Video display control system for animation pattern image (1989-09-05),

Nippon Gakki Seizo Kabushiki Kaisha, also known as Yamaha Corporation, is a multinational corporation based in Japan. It specializes in a wide range of products, including musical instruments, audio equipment, electronics, motorcycles, and power sports equipment. With a rich history dating back to 1887, Yamaha has become a renowned global brand, known for its innovation, quality, and cutting-edge technology. The company's website provides detailed information about their products, services, and corporate values.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

841 Patents

#8 in

#251 in Japan

#1,163 in the World

Nippon Gakki Seizo Kabushiki Kaisha

Forward Citations = 10,153

380 inventors:

Kenji Yokoyama (51 out of 66 patents)

Akira Nakada (45 out of 64 patents)

Eiichiro Aoki (37 out of 91 patents)

4. Takatoshi Okumura (37 out of 39 patents)

5. Minoru Ogita (33 out of 39 patents)

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