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Namiki Precision Jewel Co., Ltd.

USPTO Granted Patents = 27

Forward Citations = 339

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47 inventors (with patents filed for the assignee):

Hisayoshi Nakatsuka (6 out of 6 patents)

Yoshihiro Konno (4 out of 20 patents)

Nobuo Imaizumi (3 out of 8 patents)

4. Hidehiro Uchiumi (3 out of 8 patents)

5. Hiroaki Toshima (2 out of 22 patents)

6. Hiroshi Kume (2 out of 11 patents)

7. Yoichi Yaguchi (2 out of 4 patents)

8. Hisafumi Yasuda (2 out of 2 patents)

9. Katsumi Takahashi (1 out of 12 patents)

10. Toshio Suzuki (1 out of 51 patents)

11. Shingo Suzuki (1 out of 92 patents)

12. Minoru Ueda (1 out of 36 patents)

13. Yoshikazu Saito (1 out of 39 patents)

14. Kazuo Morita (1 out of 29 patents)

15. Kiyoshi Kurosawa (1 out of 9 patents)

27 patents: Sort by Forward Citations

1. 7790300 - R-Fe-B based thin film magnet and method for preparation thereof (2010-09-07),

2. 7176671 - Current measuring device (2007-02-13),

3. D534121 - Vibration motor (2006-12-26),

4. D509793 - Vibration motor (2005-09-20),

5. 6917270 - Electromagnetic actuator and structure for mounting the same (2005-07-12),

6. 6873069 - Very thin fan motor with attached heat sink (2005-03-29),

7. 5952745 - Cylindrical coreless vibrating motor (1999-09-14),

8. 5889349 - Cylindrical coreless vibrating motor (1999-03-30),

9. 5845024 - Optical fiber with lens and method of manufacturing the same (1998-12-01),

10. 5774264 - Polarization independent optical isolator (1998-06-30),

11. 5528697 - Integrated vibrating and sound producing device (1996-06-18),

12. 5403374 - Watch exterior parts and manufacturing method thereof (1995-04-04),

13. 5293438 - Microlensed optical terminals and optical system equipped therewith, and (1994-03-08),

14. 5204868 - Optical isolator and method for assembling same (1993-04-20),

15. 4987002 - Process for forming a crystalline diamond film (1991-01-22),

Namiki Precision Jewel Co., Ltd. specializes in the manufacturing of high-quality precision jewels and synthetic stones. With advanced technology and expertise acquired over the years, Namiki offers a diverse range of products including watch jewels, industrial jewels, sapphire windows, lenses, and much more. Committed to precision and innovation, Namiki caters to various industries such as watchmaking, medical, automotive, aerospace, and electronics. Visit their website for more information and to explore their extensive product catalog.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

27 Patents

#994 in Tokyo

#2,406 in Japan

#23,327 in the World

Namiki Precision Jewel Co., Ltd.

Forward Citations = 339

47 inventors:

Hisayoshi Nakatsuka (6 out of 6 patents)

Yoshihiro Konno (4 out of 20 patents)

Nobuo Imaizumi (3 out of 8 patents)

4. Hidehiro Uchiumi (3 out of 8 patents)

5. Hiroaki Toshima (2 out of 22 patents)

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