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Japan Polypropylene Corporation

USPTO Granted Patents = 54

% Expired Patents = 13.0

EPO Patents = 48

Trademarks = 5

Forward Citations = 163

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95 inventors (with patents filed for the assignee):

Hideshi Uchino (8 out of 19 patents)

Kuninori Takahashi (8 out of 9 patents)

Shinichi Kitade (8 out of 8 patents)

4. Iku Kouzai (7 out of 7 patents)

5. Takao Tayano (6 out of 15 patents)

6. Shigeo Mizukami (6 out of 8 patents)

7. Masahiro Uematsu (5 out of 7 patents)

8. Akio Tanna (5 out of 9 patents)

9. Kazuo Asuka (5 out of 5 patents)

10. Masato Nakano (5 out of 5 patents)

11. Naoshi Iwama (5 out of 11 patents)

12. Minoru Kobayashi (4 out of 8 patents)

13. Tetsuya Morioka (4 out of 4 patents)

14. Naomasa Sato (4 out of 9 patents)

15. Masami Kashimoto (4 out of 8 patents)

Core Competencies:

Olefin Polymerization

Polypropylene Resin Composition

Metallocene Complex

Ionomer Production

Thermal Molding Sheet

Fiber-Reinforced Resin

Decorative Film

Block Copolymer

Catalyst Component

Polyamide Resin

Multilayer Film

Heat Shrinkable Film

54 patents: Sort by Forward Citations

1. 12404353 - Olefin polymerization catalyst, olefin polymerization catalyst production method, and olefin polymer production method using the olefin polymerization catalyst (2025-09-02),

2. 12234358 - Polyamide resin composition comprising specific ionomer (2025-02-25),

3. 12152094 - Multi-component ionomer (2024-11-26),

4. 12116474 - Polar group-containing olefin copolymer (2024-10-15),

5. 12103987 - Method for producing catalyst component for olefin polymerization, method for producing catalyst for olefin polymerization, and method for producing olefin polymer (2024-10-01),

6. 11739171 - Method for producing α-olefin/(meth)acrylic acid ester copolymer (2023-08-29),

7. 11511529 - Decorative film and method for producing decorative molded body using same (2022-11-29),

8. 11168166 - Multi-component polar olefin copolymer and method for producing the same (2021-11-09),

9. 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),

10. 10975182 - Polar group-containing olefin copolymer, multinary polar olefin copolymer, olefin resin composition, and adhesive material, laminate, and other application products using same (2021-04-13),

11. 10947373 - Polypropylene resin composition for microporous film and use of polypropylene resin composition (2021-03-16),

12. 10717855 - Production method of ethylene-based ionomer and ethylene-based ionomer (2020-07-21),

13. 10550211 - Process for producing ethylene/unsaturated carboxylic acid copolymer, and said copolymer (2020-02-04),

14. 10526427 - Method for producing solid catalyst component for α-olefin polymerization and method for producing α-olefin polymer using the same (2020-01-07),

15. 10464251 - Thermal molding sheet and molded article (2019-11-05),

Japan Polypropylene Corporation (JPPC) is a leading manufacturer and supplier of polypropylene products in Japan. With decades of experience in the industry, JPPC is renowned for its high-quality polypropylene resins that are used in a wide range of applications, including automotive parts, packaging materials, and household products. Through continuous research and development, JPPC consistently strives to provide innovative solutions to meet the diverse needs of its customers. For more information about JPPC and its products, please visit our website.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

54 Patents

#763 in Tokyo

#1,628 in Japan

#13,092 in the World

Japan Polypropylene Corporation

Forward Citations = 163

95 inventors:

Hideshi Uchino (8 out of 19 patents)

Kuninori Takahashi (8 out of 9 patents)

Shinichi Kitade (8 out of 8 patents)

4. Iku Kouzai (7 out of 7 patents)

5. Takao Tayano (6 out of 15 patents)

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