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Japan Polyethylene Corporation

USPTO Granted Patents = 47

EPO Patents = 40

Trademarks = 2

Forward Citations = 62

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75 inventors (with patents filed for the assignee):

Yoshiyuki Ishihama (10 out of 16 patents)

Tsutomu Sakuragi (9 out of 9 patents)

Minoru Kobayashi (8 out of 8 patents)

4. Masaru Aoki (7 out of 10 patents)

5. Yoshikuni Okumura (6 out of 23 patents)

6. Junichi Kuroda (6 out of 11 patents)

7. Masahiro Uematsu (6 out of 6 patents)

8. Kyoko Nozaki (5 out of 14 patents)

9. Shinya Hayashi (5 out of 5 patents)

10. Tetsurou Fukuda (5 out of 5 patents)

11. Hiroyuki Shimizu (5 out of 71 patents)

12. Shingo Ito (4 out of 38 patents)

13. Yuichiro Yasukawa (4 out of 7 patents)

14. Akio Tanna (4 out of 9 patents)

15. Kazunari Abe (4 out of 4 patents)

Core Competencies:

Polyamide Resin Composition

Ionomer

Olefin Copolymer

Catalyst for Olefin Polymerization

Ethylene-Based Polymer

Metallocene Compound

Gas-Barrier Resin Composition

Solar Cell Encapsulant

Electroconductive Polyethylene

Polyethylene for Injection Molding

Alpha-Olefin Polymerization

Composite Molding

47 patents: Sort by Forward Citations

1. 12234358 - Polyamide resin composition comprising specific ionomer (2025-02-25),

2. 12152094 - Multi-component ionomer (2024-11-26),

3. 12116474 - Polar group-containing olefin copolymer (2024-10-15),

4. 11981765 - Catalyst for olefin polymerization and method for producing polar group—containing olefin polymer (2024-05-14),

5. 11739171 - Method for producing α-olefin/(meth)acrylic acid ester copolymer (2023-08-29),

6. 11697698 - Method for producing copolymer of allyl monomer having polar group (2023-07-11),

7. 11655360 - Gas-barrier resin composition and use thereof (2023-05-23),

8. 11643485 - Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, olefin polymerization catalyst containing the component, and method for producing ethylene-based polymer by using the catalyst (2023-05-09),

9. 11597827 - Resin composition, pellet, composite molded article, method for manufacturing composite molded article and tank (2023-03-07),

10. 11485808 - Metallocene compound, catalyst component for olefin polymerization and catalyst for olefin polymerization containing the same, and method for producing olefin polymer using catalyst for olefin polymerization (2022-11-01),

11. 11352453 - Catalyst for olefin polymerization and production method for polar group-containing olefin-based polymers (2022-06-07),

12. 11248074 - Method for producing copolymer of polar group-containing allyl monomer (2022-02-15),

13. 11168166 - Multi-component polar olefin copolymer and method for producing the same (2021-11-09),

14. 11084957 - Polar-group-containing olefin copolymer, polar-group-containing multinary olefin copolymer, olefin-based resin composition, and adhesive and layered product each using the same (2021-08-10),

15. 10995167 - Metallocene compound, catalyst component for olefin polymerization and catalyst for olefin polymerization containing the same, and method for producing olefin polymer using catalyst for olefin polymerization (2021-05-04),

Japan Polyethylene Corporation is a leading manufacturer and supplier of polyethylene products. With over 50 years of experience in the industry, we are committed to delivering high-quality and innovative solutions to our customers. Our product portfolio includes various grades of polyethylene resins that meet the diverse needs of industries such as packaging, automotive, construction, and more. We prioritize sustainability and strive to minimize our environmental impact through responsible production practices. Visit our website to learn more about our products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

47 Patents

#719 in Tokyo

#1,742 in Japan

#14,403 in the World

Japan Polyethylene Corporation

Forward Citations = 62

75 inventors:

Yoshiyuki Ishihama (10 out of 16 patents)

Tsutomu Sakuragi (9 out of 9 patents)

Minoru Kobayashi (8 out of 8 patents)

4. Masaru Aoki (7 out of 10 patents)

5. Yoshikuni Okumura (6 out of 23 patents)

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