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Mitsubishi Engineering-Plastics Corporation

USPTO Granted Patents = 139

% Expired Patents = 3.6

EPO Patents = 93

Trademarks = 7

Forward Citations = 854

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161 inventors (with patents filed for the assignee):

Yasushi Yamanaka (14 out of 18 patents)

Toshiki Monden (11 out of 16 patents)

Ryusuke Yamada (7 out of 8 patents)

4. Takahiro Takano (7 out of 11 patents)

5. Yoshihiro Kurasawa (7 out of 7 patents)

6. Keisuke Tomita (6 out of 9 patents)

7. Michio Nakata (6 out of 6 patents)

8. Hiroshi Nakano (6 out of 45 patents)

9. Kiyoji Takagi (6 out of 8 patents)

10. Hiroyuki Imaizumi (6 out of 6 patents)

11. Hiroshi Urabe (6 out of 6 patents)

12. Satoshi Kanayama (6 out of 6 patents)

13. Shinya Miya (6 out of 6 patents)

14. Naoto Obayashi (6 out of 8 patents)

15. Atsushi Motegi (5 out of 5 patents)

Core Competencies:

Polycarbonate Resin

Thermoplastic Resin

Flame Retardant

Polyamide Resin

Polybutylene Terephthalate

Polyacetal Resin

Molded Article

Laser Direct Structuring

Composite Molding

Optical Component

Resin Composition

Injection Molded Article

139 patents: Sort by Forward Citations

1. 12397475 - Method for producing flame retardant polycarbonate resin composition pellet (2025-08-26),

2. D1079532 - Ear cuff (2025-06-17),

3. 12031032 - Thermoplastic resin including a flame retardant and organopolysiloxane (2024-07-09),

4. 11613629 - Polycarbonate resin composition pellet, method for producing pellet, and molded article thereof (2023-03-28),

5. 11613626 - Polycarbonate resin composition (2023-03-28),

6. 11608426 - Polycarbonate resin composition (2023-03-21),

7. 11603467 - Polycarbonate resin composition (2023-03-14),

8. 11597827 - Resin composition, pellet, composite molded article, method for manufacturing composite molded article and tank (2023-03-07),

9. D970620 - Color sample plate (2022-11-22),

10. 11441031 - Thermoplastic resin composition, molded article, method for manufacturing thermoplastic resin composition, and, method for manufacturing plated molded article (2022-09-13),

11. 11427679 - Polycarbonate resin composition (2022-08-30),

12. 11397372 - Molded article and method for manufacturing molded article (2022-07-26),

13. 11390037 - Laser welded body (2022-07-19),

14. 11384237 - Polyacetal resin composition, molded article and method for manufacturing polyacetal resin composition (2022-07-12),

15. 11198785 - Polycarbonate resin composition (2021-12-14),

Mitsubishi Engineering-Plastics Corporation, headquartered in Tokyo, specializes in the development and manufacturing of advanced thermoplastic resin compositions. The company focuses on a range of core technologies, including polycarbonate resin, polyamide resin, and flame retardant materials. With expertise in polybutylene terephthalate and polyacetal resin, Mitsubishi Engineering-Plastics is committed to delivering high-performance molded articles and innovative solutions, particularly in sectors requiring durable and versatile materials.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Mitsubishi Engineering-Plastics Corporation

139 Patents

#446 in Tokyo

#903 in Japan

#5,817 in the World

Mitsubishi Engineering-Plastics Corporation

Forward Citations = 854

161 inventors:

Yasushi Yamanaka (14 out of 18 patents)

Toshiki Monden (11 out of 16 patents)

Ryusuke Yamada (7 out of 8 patents)

4. Takahiro Takano (7 out of 11 patents)

5. Yoshihiro Kurasawa (7 out of 7 patents)

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