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Hamamatsu, Japan

Kabushiki Kaisha Kawai Gakki Seisakusho

USPTO Granted Patents = 455

EPO Patents = 12

Trademarks = 2

Forward Citations = 3,091

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204 inventors (with patents filed for the assignee):

Tsutomu Saito (23 out of 34 patents)

Tsutomu Yamaguchi (19 out of 20 patents)

Yoshiaki Shimoda (17 out of 17 patents)

4. Hiroshi Kitagawa (15 out of 22 patents)

5. Akihiro Suzuki (14 out of 30 patents)

6. Tatsunori Kondo (14 out of 14 patents)

7. Kiyomi Takauji (14 out of 20 patents)

8. Gen Izumisawa (13 out of 15 patents)

9. Sadaaki Ezawa (13 out of 14 patents)

10. Yutaka Washiyama (12 out of 22 patents)

11. Yoshihisa Shimada (12 out of 13 patents)

12. Yasushi Sato (11 out of 14 patents)

13. Akihiro Fujita (11 out of 25 patents)

14. Muneo Ishida (11 out of 15 patents)

15. Shinya Konishi (11 out of 14 patents)

Core Competencies:

Keyboard Instrument

Musical Tone Generation

Digital Signal Processing

Electronic Musical Instrument

Key Guide Structure

Hammer Device

Piano Action

Touch Weight Adjustment

Automatic Accompaniment

Music Rack Unit

Fallboard Arrangement

Handwritten Music Recognition

455 patents: Sort by Forward Citations

1. 12475865 - Hammer device for keyboard instrument (2025-11-18),

2. 12412554 - Key guide structure for keyboard instrument (2025-09-09),

3. 12324509 - Music rack unit-mounting structure of grand piano (2025-06-10),

4. 12308006 - Musical tone generating device and control method of musical tone generating device (2025-05-20),

5. 12223934 - Keyboard device for keyboard instrument (2025-02-11),

6. 12205568 - Keyboard device for keyboard instrument (2025-01-21),

7. 12190853 - Keyboard device for keyboard instrument (2025-01-07),

8. 12154531 - Key for keyboard device (2024-11-26),

9. 12136403 - Keyboard device for keyboard instrument (2024-11-05),

10. 11816026 - Digital signal processing device and control method of digital signal processing device (2023-11-14),

11. 11562718 - Keyboard device for keyboard instrument (2023-01-24),

12. 11556303 - Digital signal processing device and control method of digital signal processing device (2023-01-17),

13. 11508341 - Keyboard device for keyboard instrument (2022-11-22),

14. 11267280 - Decorative molded article (2022-03-08),

15. 11250820 - Stopper rail for silent piano (2022-02-15),

KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO is a renowned Japanese company that specializes in manufacturing and distributing musical instruments. Established in 1927, Kawai has grown to become one of the leading global piano and musical instrument brands. Known for their commitment to innovation and craftsmanship, Kawai produces a wide range of pianos, digital pianos, synthesizers, and other musical instruments that are trusted and loved by professional musicians, music schools, and enthusiasts worldwide. Their dedication to quality and excellence has earned Kawai numerous accolades and recognition within the music industry. To learn more about KAWAI GAKKI SEISAKUSHO and their exceptional musical instruments, visit their official website.

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

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USPTO Data Jan 1 1976 - Dec 9 2025

455 Patents

#2 in Hamamatsu

#393 in Japan

#2,027 in the World

Hamamatsu, Japan

Kabushiki Kaisha Kawai Gakki Seisakusho

Forward Citations = 3,091

204 inventors:

Tsutomu Saito (23 out of 34 patents)

Tsutomu Yamaguchi (19 out of 20 patents)

Yoshiaki Shimoda (17 out of 17 patents)

4. Hiroshi Kitagawa (15 out of 22 patents)

5. Akihiro Suzuki (14 out of 30 patents)

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