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Mitsubishi Mining and Cement Co. Ltd.

USPTO Granted Patents = 65

Forward Citations = 949

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118 inventors (with patents filed for the assignee):

Mikiya Ono (13 out of 14 patents)

Tokio Uetsuhara (8 out of 10 patents)

Kazuyasu Hikita (7 out of 13 patents)

4. Shigeo Niwa (6 out of 17 patents)

5. Hideo Tagai (6 out of 10 patents)

6. Hiroyasu Takeuchi (6 out of 6 patents)

7. Naoto Kitahara (4 out of 8 patents)

8. Akio Uchida (4 out of 4 patents)

9. Masahiro Kobayashi (4 out of 5 patents)

10. Yoshiaki Fukuda (4 out of 4 patents)

11. Yasuo Miyashita (4 out of 4 patents)

12. Masao Kashima (4 out of 5 patents)

13. Hirofumi Hatano (4 out of 5 patents)

14. Yoshinori Shinohara (4 out of 4 patents)

15. Hiroshi Kawaguchi (3 out of 88 patents)

Core Competencies:

Electromagnetic Actuator

Piezoelectric Transducer

Pyroelectric Ceramic Composition

Ceramic Composite Material

Dielectric Ceramic Composition

Quick Setting Compositions

Surge Absorber

Photo-Driven Switching Apparatus

Implant Material

Multilayered Ceramic Capacitor

Electronic Parts Manufacturing

High Pressure Discharge Lamp

65 patents: Sort by Forward Citations

1. 5495383 - Circuit for protecting electronic equipment from overvoltage or (1996-02-27),

2. 5273579 - Quick setting compositions (1993-12-28),

3. 5268662 - Plunger type electromagnet (1993-12-07),

4. 5202790 - Photo-driven light beam deflecting apparatus (1993-04-13),

5. 5142511 - Piezoelectric transducer (1992-08-25),

6. 5141903 - Pyroelectric ceramic composition (1992-08-25),

7. 5130277 - Ceramic composite material and process of manufacturing thereof (1992-07-14),

8. 5123739 - Method of monitoring cement kiln and the apparatus therefor (1992-06-23),

9. 5122993 - Piezoelectric transducer (1992-06-16),

10. 5093291 - Pyroelectric ceramic composite structure (1992-03-03),

11. 5064791 - Method of preparing ceramic composite powders and the powders obtained (1991-11-12),

12. 5050969 - Photo-driven switching apparatus (1991-09-24),

13. 5045638 - Apparatus for shielding electromagnetic radiation (1991-09-03),

14. 5036420 - Surge absorber (1991-07-30),

15. 5032471 - Pyroelectric ceramic composition and multilayered structure therefrom (1991-07-16),

Mitsubishi Mining and Cement Co. Ltd. is a global company specializing in mining and producing cement. With a history dating back over a century, Mitsubishi Mining and Cement has established itself as a leading player in the industry. Our commitment to delivering high-quality products, sustainable operations, and innovative technologies has made us a trusted name in the mining and cement sectors. Visit our website to learn more about our company and explore our range of products and services.

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Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

65 Patents

#605 in Tokyo

#1,430 in Japan

#10,880 in the World

Mitsubishi Mining and Cement Co. Ltd.

Forward Citations = 949

118 inventors:

Mikiya Ono (13 out of 14 patents)

Tokio Uetsuhara (8 out of 10 patents)

Kazuyasu Hikita (7 out of 13 patents)

4. Shigeo Niwa (6 out of 17 patents)

5. Hideo Tagai (6 out of 10 patents)

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