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Jsp Corporation

USPTO Granted Patents = 231

CIPO Patents = 2

EPO Patents = 129

Trademarks = 21

Forward Citations = 1,436

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137 inventors (with patents filed for the assignee):

Masaharu Oikawa (34 out of 34 patents)

Hidehiro Sasaki (25 out of 25 patents)

Hisao Tokoro (21 out of 22 patents)

4. Satoru Shioya (19 out of 19 patents)

5. Keiichi Hashimoto (16 out of 16 patents)

6. Tomoo Tokiwa (15 out of 15 patents)

7. Mitsuru Shinohara (15 out of 16 patents)

8. Akinobu Hira (15 out of 15 patents)

9. David Lee Pratley (15 out of 15 patents)

10. Shota Takagi (14 out of 14 patents)

11. Tom Malloy (14 out of 14 patents)

12. Masato Naito (13 out of 13 patents)

13. Clive Johnstone (12 out of 12 patents)

14. Naochika Kogure (11 out of 11 patents)

15. Mark Williams (10 out of 10 patents)

Core Competencies:

Polyolefin-Based Resin

Polypropylene-Based Resin

Polyethylene Resin

Thermoplastic Elastomer Foam

Polyamide Resin

Composite Particles

Laminated Foam Sheet

Hearing Protection Headset

Personal Respiratory Protection

Expanded Beads

Foam Particles

Molded Articles

231 patents: Sort by Forward Citations

1. 12503597 - Composite molded article (2025-12-23),

2. 12473415 - Polyolefin-based resin expanded beads, molded article of polyolefin-based resin expanded beads and method for producing polyolefin-based resin expanded beads (2025-11-18),

3. 12441860 - Polypropylene-based resin expanded bead, method for producing same, and molded article of polypropylene-based resin expanded beads (2025-10-14),

4. 12420533 - Polyethylene-based resin multilayer foam sheet and method for producing same (2025-09-23),

5. 12344737 - Thermoplastic elastomer foam particles and molded body of same (2025-07-01),

6. 12305013 - Polypropylene-based resin expanded beads and method for producing polypropylene-based resin expanded beads (2025-05-20),

7. 12275831 - Method for producing polypropylene-based resin expanded beads and polypropylene-based resin expanded beads (2025-04-14),

8. 12275179 - Polyethylene resin multilayer foam sheet, interleaving paper for glass plates, and method for manufacturing polyethylene resin multilayer foam sheet (2025-04-14),

9. 12240956 - Expanded bead and method for producing the same (2025-03-04),

10. 12202951 - Modified expanded bead and foam molded article of expanded beads (2025-01-21),

11. 12152121 - Vehicle seat core material (2024-11-26),

12. 12129350 - Polyamide resin foamed particles and method for producing same (2024-10-29),

13. D1036416 - Control pack (2024-07-23),

14. 11993690 - Polyamide-based resin expanded beads and molded article of polyamide-based resin expanded beads (2024-05-28),

15. 11965084 - Method for producing polypropylene-based resin foamed molded article (2024-04-23),

JSP CORPORATION is a leading global manufacturer of high-performance plastic solutions. With over 50 years of expertise, we specialize in the production of innovative plastic products for various industries including automotive, electronics, healthcare, and more. Our commitment to quality, sustainability, and customer satisfaction drives us to develop cutting-edge solutions that meet the evolving needs of our clients. Visit our website to learn more about our extensive product range and how we can help you achieve your business goals.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

231 Patents

#271 in Tokyo

#614 in Japan

#3,601 in the World

Jsp Corporation

Forward Citations = 1,436

137 inventors:

Masaharu Oikawa (34 out of 34 patents)

Hidehiro Sasaki (25 out of 25 patents)

Hisao Tokoro (21 out of 22 patents)

4. Satoru Shioya (19 out of 19 patents)

5. Keiichi Hashimoto (16 out of 16 patents)

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