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Okamoto Machine Tool Works, Ltd.

USPTO Granted Patents = 20

Trademarks = 3

Forward Citations = 45

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34 inventors (with patents filed for the assignee):

Eiichi Yamamoto (7 out of 7 patents)

Takahiko Mitsui (7 out of 7 patents)

Kazuo Kobayashi (6 out of 46 patents)

4. Satoru Ide (4 out of 4 patents)

5. Tsubasa Bando (4 out of 4 patents)

6. Yutaka Yoshida (3 out of 3 patents)

7. Moriyuki Kashiwa (3 out of 3 patents)

8. Takuo Hirayama (2 out of 2 patents)

9. Kuniyoshi Matsuoka (2 out of 2 patents)

10. Shiho Satake (2 out of 2 patents)

11. Yoshimi Kito (2 out of 2 patents)

12. Tomio Kubo (2 out of 2 patents)

13. Etsuo Fujita (2 out of 2 patents)

14. Tsutomu Yamada (1 out of 4 patents)

15. Toshihiro Ito (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 12358095 - Substrate grinding device and substrate grinding method (2025-07-15),

2. 12318886 - Grinding apparatus (2025-06-03),

3. 12068165 - Method for manufacturing semiconductor device and apparatus for manufacturing semiconductor device (2024-08-20),

4. 11980997 - Dressing apparatus and polishing apparatus (2024-05-14),

5. 11745299 - Grinding method of composite substrate including resin and grinding apparatus thereof (2023-09-05),

6. 11735411 - Method and apparatus for manufacturing semiconductor device (2023-08-22),

7. 11344993 - Automatic grinding apparatus (2022-05-31),

8. 10964576 - Electrostatic attachment chuck, method for manufacturing the same, and semiconductor device manufacturing method (2021-03-30),

9. 10763171 - Method of manufacturing semiconductor apparatus (2020-09-01),

10. 10556318 - Automatic grinding apparatus (2020-02-11),

11. 8460058 - Complex apparatus and method for polishing an ingot block (2013-06-11),

12. 8366514 - Semiconductor substrate planarization apparatus and planarization method (2013-02-05),

13. 8047897 - Substrate flat grinding device (2011-11-01),

14. 7238087 - Planarizing device and a planarization method for semiconductor substrates (2007-07-03),

15. 7214124 - Equipment and method for polishing both sides of a rectangular substrate (2007-05-08),

OKAMOTO MACHINE TOOL WORKS, LTD. is a leading manufacturer and supplier of precision grinding machines. With over 80 years of experience in the industry, they offer a wide range of grinding machines for various applications such as automotive, aerospace, electronics, and more. Their machines are known for their high precision, reliability, and advanced technology. Visit their website to learn more about their products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 20 2026

20 Patents

#10 in Gunma

#2,887 in Japan

#30,410 in the World

Okamoto Machine Tool Works, Ltd.

Forward Citations = 45

34 inventors:

Eiichi Yamamoto (7 out of 7 patents)

Takahiko Mitsui (7 out of 7 patents)

Kazuo Kobayashi (6 out of 46 patents)

4. Satoru Ide (4 out of 4 patents)

5. Tsubasa Bando (4 out of 4 patents)

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