EPO Patents = 3

Trademarks = 3

Forward Citations = 7

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11 inventors (with patents filed for the assignee):

Katsuhiro Fujimoto (3 out of 3 patents)

Motohiro Hirao (3 out of 3 patents)

Masao Watanabe (2 out of 75 patents)

4. Tatsuo Nakahata (2 out of 39 patents)

5. Manabu Saito (2 out of 23 patents)

6. Toshihiko Kushida (2 out of 9 patents)

7. Yukio Torigai (2 out of 9 patents)

8. Tatsuo Hirai (2 out of 9 patents)

9. Akira Takenouchi (1 out of 1 patent)

10. Youichi Morisawa (1 out of 1 patent)

11. Yuki Sugiura (1 out of 9 patents)

12. Fujimoto Katsuhiro (0 patent)

6 patents: Sort by Forward Citations

1. 12246415 - Socket adapter for impact wrench (2025-03-11),

2. 12042909 - Electric power tools (2024-07-23),

3. D972903 - Adjustable wrench (2022-12-20),

4. 9776453 - Tightening device and tightening method (2017-10-03),

5. 9645026 - Tightening device (2017-05-09),

6. D769093 - Socket for wrench (2016-10-18),

Tone Co., Ltd. is a leading manufacturer of high-quality audio equipment. With a focus on innovation and cutting-edge technology, we strive to deliver exceptional sound experiences to our customers. From amplifiers to speakers, our products are designed to enhance music and entertainment in any environment.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

6 Patents

#563 in Osaka

#5,843 in Japan

Osaka, Japan

Tone Co., Ltd.