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Japan Polychem Corporation

USPTO Granted Patents = 39

% Expired Patents = 5.1

EPO Patents = 2

Trademarks = 1

Forward Citations = 279

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104 inventors (with patents filed for the assignee):

Takao Tayano (8 out of 15 patents)

Toshihiko Sugano (7 out of 41 patents)

Yukihito Zanka (6 out of 14 patents)

4. Yoshihiro Sobajima (5 out of 15 patents)

5. Yoshiyuki Ishihama (4 out of 16 patents)

6. Tadashi Sezume (4 out of 4 patents)

7. Takayuki Nagai (3 out of 17 patents)

8. Hiroshi Nakano (3 out of 45 patents)

9. Mitsuhiro Murayama (3 out of 5 patents)

10. Yoshinobu Nagaoka (3 out of 3 patents)

11. Toshimitsu Hasegawa (3 out of 3 patents)

12. Akihiko Egashira (3 out of 5 patents)

13. Kyoko Nozaki (2 out of 16 patents)

14. Hideshi Uchino (2 out of 19 patents)

15. Hironari Sano (2 out of 19 patents)

Core Competencies:

Olefin Polymerization

Catalyst Component

Polypropylene Resin

Block Copolymer

Ethylene Polymer

Moldability Modifier

Heat-Shrinkable Film

Pressure-Sensitive Adhesive

Thermoplastic Resin

Composite Laminated Sheet

Tacky Films

Automotive Molded Article

39 patents: Sort by Forward Citations

1. 12187825 - Polar group-containing olefin copolymer (2025-01-07),

2. 11149099 - Metal complex and method for producing the same, catalyst component for olefin polymerization and catalyst for olefin polymerization containing the metal complex, and methods for producing α-olefin polymer and copolymer using the catalyst for olefin polymerization (2021-10-19),

3. 7064160 - Moldability modifier for polypropylene resin and polypropylene resin composition containing the same (2006-06-20),

4. 7005400 - Component of catalyst for polymerizing olefin, catalyst for polymerizing olefin and process for polymerizing olefin (2006-02-28),

5. 6953831 - Ethylene polymers (2005-10-11),

6. 6875485 - Resin composition for heat-shrinkable polypropylene shrink label and film comprising same (2005-04-05),

7. 6825280 - Propylene block copolymer and propylene resin composition (2004-11-30),

8. 6756463 - Propylene polymer (2004-06-29),

9. 6677411 - Component of catalyst for olefin polymerization (2004-01-13),

10. 6660797 - Propylene resin composition and method for molding the same (2003-12-09),

11. 6646044 - Continuous production method of propylene-based block copolymer (2003-11-11),

12. 6632911 - Ethylene/&agr;-olefin copolymer and film made thereof (2003-10-14),

13. 6624253 - Propylene type resin composition, film made thereof, and laminated resin film (2003-09-23),

14. 6608130 - Polypropylene-based resin composition of excellent moldability and giving molded product of excellent appearance (2003-08-19),

15. 6586061 - Multi-layer film and medical bag using the same (2003-07-01),

Japan Polychem Corporation is a prominent player in the field of advanced polymer materials, specializing in the development and manufacturing of high-performance resins and compounds. The company focuses on innovative solutions for various industries, including automotive, electronics, and packaging, leveraging cutting-edge technology to enhance product performance and sustainability. With a commitment to research and development, Japan Polychem aims to meet the evolving needs of its global clientele while contributing to advancements in material science.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

39 Patents

#943 in Tokyo

#2,001 in Japan

#17,413 in the World

Japan Polychem Corporation

Forward Citations = 279

104 inventors:

Takao Tayano (8 out of 15 patents)

Toshihiko Sugano (7 out of 41 patents)

Yukihito Zanka (6 out of 14 patents)

4. Yoshihiro Sobajima (5 out of 15 patents)

5. Yoshiyuki Ishihama (4 out of 16 patents)

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