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Mitsui Petrochemical Industries, Ltd.

USPTO Granted Patents = 1,008

CIPO Patents = 3

Trademarks = 5

Forward Citations = 17,118

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1,068 inventors (with patents filed for the assignee):

Norio Kashiwa (72 out of 93 patents)

Akinori Toyota (69 out of 72 patents)

Mamoru Kioka (64 out of 81 patents)

4. Toshiyuki Tsutsui (56 out of 94 patents)

5. Takashi Ueda (37 out of 43 patents)

6. Toshihiro Sagane (29 out of 32 patents)

7. Tetsuo Tojo (27 out of 38 patents)

8. Masaaki Kawasaki (26 out of 59 patents)

9. Akira Todo (22 out of 38 patents)

10. Noriaki Kihara (21 out of 21 patents)

11. Kazuo Yagi (21 out of 26 patents)

12. Fujihisa Matsunaga (20 out of 23 patents)

13. Junichi Imuta (19 out of 34 patents)

14. Hajime Inagaki (19 out of 25 patents)

15. Yoshihisa Kiso (18 out of 26 patents)

Core Competencies:

Polyester Compositions

Olefin Polymerization

Metallocene Polyethylene

Thermoplastic Elastomer

Aromatic Polyamide

Multi-Layer Laminates

Cycloolefin Copolymer

Polymerization Catalyst

Acoustic Vibrational Material

Polyolefin Packaging

Thin-Film Electroluminescent Device

Vulcanizable Rubber Composition

1,008 patents: Sort by Forward Citations

1. 6485804 - Polyester compositions and laminates and processes for producing biaxially stretched polyester bottles (2002-11-26),

2. 6210765 - Adhesive polyethylene compositions and multi-layer laminated films using the same (2001-04-03),

3. 6165573 - Multi-layer laminates and uses thereof (2000-12-26),

4. 6130312 - Production of aromatic polyamide (2000-10-10),

5. 6080828 - Polymerization catalyst and process for preparing an ethylene polymer (2000-06-27),

6. 6063871 - Metallocene polyethylene blend compositions (2000-05-16),

7. 6063536 - Thermal fixing developer material and wax for electrophotography (2000-05-16),

8. 6054542 - Ethylene polymer and process for preparing the same (2000-04-25),

9. 6040407 - Chain polyene group-containing norbornene compound and unsaturated (2000-03-21),

10. 6037411 - Acoustic vibrational material of fiber reinforcement with epoxy resin (2000-03-14),

11. 6034189 - Solid titanium catalyst component for olefin polymerization, process for (2000-03-07),

12. 5977277 - Acrylic ester, novel allyl ether, novel allyl carbonate, acrylic ester (1999-11-02),

13. 5972446 - Polyester bottle and method of removing adsorbates on the bottle (1999-10-26),

14. 5955209 - Thin-film electroluminescent device (1999-09-21),

15. 5922888 - Process for removal of diol as impurity in cyclic carbonic acid ester (1999-07-13),

Mitsui Petrochemical Industries, Ltd. is a leading company in the petrochemical industry. They are engaged in the manufacture and sale of a wide range of chemical products, including olefins, aromatics, functional polymers, and synthetic resins. With a commitment to innovation and sustainability, Mitsui Petrochemical Industries aims to contribute to society through the supply of high-quality products and environmentally friendly business practices.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

1,008 Patents

#103 in Tokyo

#223 in Japan

#980 in the World

Mitsui Petrochemical Industries, Ltd.

Forward Citations = 17,118

1,068 inventors:

Norio Kashiwa (72 out of 93 patents)

Akinori Toyota (69 out of 72 patents)

Mamoru Kioka (64 out of 81 patents)

4. Toshiyuki Tsutsui (56 out of 94 patents)

5. Takashi Ueda (37 out of 43 patents)

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