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For the Inventor, By the Inventor

Tokyo-To, Japan

Mitsubishi Petrochemical Company Limited


USPTO Granted Patents = 546


Trademarks = 4

Forward Citations = 7,282

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760 inventors (with patents filed for the assignee):

goldMedal Takashi Fujita (29 out of 32 patents)

silverMedal Makoto Imanari (25 out of 32 patents)

bronzeMedal Kazuhide Hayama (23 out of 37 patents)

4.  Hiroshi Yui (21 out of 23 patents)

5.  Mitsutoshi Aritomi (19 out of 25 patents)

6.  Mitsuyuki Matsuura (18 out of 18 patents)

7.  Hiroshi Iwane (17 out of 27 patents)

8.  Takao Yazaki (17 out of 21 patents)

9.  Takeshi Shibano (16 out of 17 patents)

10.  Masaki Fujii (16 out of 16 patents)

11.  Mitsutaka Miyabayashi (15 out of 16 patents)

12.  Toshihiko Sugano (14 out of 41 patents)

13.  Yoshihisa Watanabe (13 out of 15 patents)

14.  Tetsuji Kakizaki (13 out of 13 patents)

15.  Kiichi Itoh (12 out of 19 patents)


Core Competencies:
Polymerization Catalysts
Nonaqueous Electrolyte Batteries
Thermoplastic Resins
Olefin Polymers
Herbicide Derivatives
Biaxially-Oriented Films
Optical Materials
Gas Barrier Properties
Acrylic Esters Production
High Purity Bismaleimide
Self-Checking Sensors
Sulfide Linked Polysiloxanes

546 patents:

1. 6143911 - Catalyst useful for the polymerization of olefins (2000-11-07),
2. 5629371 - Resin molding (1997-05-13),
3. 5502020 - Catalyst for production of ethylene oxide and process for producing the (1996-03-26),
4. 5484669 - Nonaqueous electrolyte secondary batteries (1996-01-16),
5. 5474962 - Powder catalyst composition and process for polymerizing olefins with (1995-12-12),
6. 5474862 - Nonaqueous electrolyte secondary batteries (1995-12-12),
7. 5468781 - Polypropylene resin expanded particles (1995-11-21),
8. 5468721 - Phenoxymethylpyrimidine derivative and use thereof as herbicide (1995-11-21),
9. 5453213 - Latent heat storage material containing Na.sub.2 SO.sub.4.10H.sub.2 O, (1995-09-26),
10. 5449722 - Thermoplastic resin composition (1995-09-12),
11. 5449650 - Catalyst components for polymerization of olefins and use thereof (1995-09-12),
12. 5444125 - Aminated olefin polymers (1995-08-22),
13. 5443935 - Electrophotographic photoreceptor (1995-08-22),
14. 5443874 - Hollow multi-layer molding (1995-08-22),
15. 5442103 - Process for producing 2,6-naphthalenedicarboxylic acid (1995-08-15),
Mitsubishi Petrochemical Company Limited is a global petrochemical company involved in the manufacture and sale of a wide range of products, including synthetic resins, synthetic fibers, and basic chemicals. With a strong focus on research and development, Mitsubishi Petrochemical delivers innovative solutions and high-quality materials to various industries, such as automotive, electronics, healthcare, and packaging. Visit their website for more information about their products, services, and corporate activities.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Jan 6 2026

546 Patents

#2 in Tokyo-To

#353 in Japan

#1,733 in the World

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Tokyo-To, Japan

Mitsubishi Petrochemical Company Limited

Forward Citations = 7,282

760 inventors:

goldMedal Takashi Fujita (29 out of 32 patents)

silverMedal Makoto Imanari (25 out of 32 patents)

bronzeMedal Kazuhide Hayama (23 out of 37 patents)

4.  Hiroshi Yui (21 out of 23 patents)

5.  Mitsutoshi Aritomi (19 out of 25 patents)

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