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Kabushikikaisha Tokyo Keiki

USPTO Granted Patents = 22

Forward Citations = 167

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32 inventors (with patents filed for the assignee):

Takeshi Hojo (10 out of 29 patents)

Michio Fukano (4 out of 11 patents)

Isao Masuzawa (3 out of 10 patents)

4. Kazuteru Sato (3 out of 6 patents)

5. Takafumi Nakaishi (3 out of 7 patents)

6. Shinichi Kawada (2 out of 13 patents)

7. Shin-ichi Kawada (2 out of 4 patents)

8. Kanshi Yamamoto (2 out of 9 patents)

9. Tomiji Nirasawa (2 out of 3 patents)

10. Hiroshi Ota (2 out of 3 patents)

11. Toyohiko Kitada (2 out of 2 patents)

12. Toshio Miyayama (2 out of 3 patents)

13. Fuyuki Hane (1 out of 3 patents)

14. Miaki Yamamoto (1 out of 1 patent)

15. Hidekazu Asada (1 out of 1 patent)

22 patents: Sort by Forward Citations

1. 4811679 - Marine automatic steering apparatus (1989-03-14),

2. 4792676 - Gyro apparatus with a vibration portion (1988-12-20),

3. 4791727 - Gyro apparatus (1988-12-20),

4. 4766834 - Marine automatic steering apparatus (1988-08-30),

5. 4763072 - Magnetic azimuth detector (1988-08-09),

6. 4708024 - Gyro apparatus (1987-11-24),

7. 4703655 - Gyro apparatus (1987-11-03),

8. 4694696 - Vibration-type gyro apparatus (1987-09-22),

9. 4669323 - Erector (1987-06-02),

10. 4653325 - Gyro apparatus (1987-03-31),

11. 4649748 - Accelerometer (1987-03-17),

12. 4545248 - Ultrasonic thickness gauge (1985-10-08),

13. 4512193 - Accelerometer (1985-04-23),

14. 4471665 - Gyro apparatus (1984-09-18),

15. 4451990 - Gyrocompass (1984-06-05),

Kabushikikaisha Tokyo Keiki, known as Tokyo Keiki, is a leading Japanese company specialized in the manufacturing and distribution of high-quality precision instruments and control systems. With over 100 years of experience, Tokyo Keiki has established itself as a reliable provider of innovative solutions for various industries, including marine, aviation, energy, and industrial automation. Committed to meeting customer needs, Tokyo Keiki focuses on delivering cutting-edge technologies, exceptional product quality, and excellent customer support.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

22 Patents

#1,120 in Tokyo

#2,724 in Japan

#27,863 in the World

Kabushikikaisha Tokyo Keiki

Forward Citations = 167

32 inventors:

Takeshi Hojo (10 out of 29 patents)

Michio Fukano (4 out of 11 patents)

Isao Masuzawa (3 out of 10 patents)

4. Kazuteru Sato (3 out of 6 patents)

5. Takafumi Nakaishi (3 out of 7 patents)

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