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Idemitsu Petrochemical Co., Ltd.

USPTO Granted Patents = 555

CIPO Patents = 3

Trademarks = 3

Forward Citations = 5,696

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556 inventors (with patents filed for the assignee):

Atsushi Fujii (30 out of 31 patents)

Masaya Okamoto (24 out of 76 patents)

Akio Nodera (22 out of 40 patents)

4. Shigeki Kuze (18 out of 22 patents)

5. Hideo Funabashi (17 out of 25 patents)

6. Yutaka Minami (15 out of 51 patents)

7. Akihiko Okada (15 out of 26 patents)

8. Manabu Nomura (14 out of 16 patents)

9. Noriyuki Kunishi (13 out of 17 patents)

10. Masao Takashige (13 out of 13 patents)

11. Tsuyoshi Ota (12 out of 24 patents)

12. Akira Funaki (11 out of 13 patents)

13. Naoki Mitsuta (11 out of 11 patents)

14. Eiichi Terada (11 out of 11 patents)

15. Takeshi Shinohara (11 out of 11 patents)

Core Competencies:

Olefin Polymerization

Polycarbonate Resin Composition

Flame-Retardant Materials

Transition Metal Compounds

Bisphenol A Production

Polypropylene Resin

Styrene Polymerization

Low Polymer Production

Polyolefin-Based Sheets

Automotive Interior Components

Thermoplastic Resin Sheets

Molding Techniques

555 patents: Sort by Forward Citations

1. 7402712 - Adamantyl vinyl ether compound and production process for the same (2008-07-22),

2. 7169961 - Process for producing low polymer of α-olefin (2007-01-30),

3. 7129382 - Process for producing bisphenol A (2006-10-31),

4. 7071138 - Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer (2006-07-04),

5. 7001945 - Flame-retardant polycarbonate resin composition and formed article (2006-02-21),

6. 6930160 - 1-Butene polymer and molded product consisting of the polymer (2005-08-16),

7. 6906155 - Propylene polymer and composition containing the same, molded object and laminate comprising these, and processes for producing propylene polymer and composition containing the same (2005-06-14),

8. 6890494 - Method for polymerization of olefin (2005-05-10),

9. 6867252 - Propylene resin composition and interior automotive member comprising the same (2005-03-15),

10. 6860539 - Two-color molding and molding method thereof (2005-03-01),

11. 6855756 - Flexible polypropylene resin (2005-02-15),

12. 6852407 - POLYOLEFIN-BASED SHEET, DISPLAY SHEET COMPRISING THE SAME, PACKAGE SHEET, TRANSPARENT RECORDING SHEET, COSMETIC SHEET, EMBLEM SHEET, DECORATIVE SHEET, AND COATING MATERIAL FOR POLYOLEFIN RESIN FOR USE IN THESE (2005-02-08),

13. 6841693 - Transition metal compound, olefin polymerization catalyst, and method of polymerizing olefin (2005-01-11),

14. 6838502 - Polycarbonate resin composition (2005-01-04),

15. 6838409 - Catalyst for olefin/styrene copolymerization, and process for producing olefin/styrene copolymer (2005-01-04),

Idemitsu Petrochemical Co., Ltd. is a leading petrochemical company based in Japan. With a diverse range of products, the company manufactures and sells synthetic resins, basic chemicals, functional materials, and performance products. As part of the Idemitsu Kosan Group, Idemitsu Petrochemical emphasizes sustainability and innovation in its operations. The company is committed to delivering high-quality products and contributing to the growth and development of industries globally.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

555 Patents

#154 in Tokyo

#346 in Japan

#1,704 in the World

Idemitsu Petrochemical Co., Ltd.

Forward Citations = 5,696

556 inventors:

Atsushi Fujii (30 out of 31 patents)

Masaya Okamoto (24 out of 76 patents)

Akio Nodera (22 out of 40 patents)

4. Shigeki Kuze (18 out of 22 patents)

5. Hideo Funabashi (17 out of 25 patents)

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