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Jsp Corporation

USPTO Granted Patents = 244

% Expired Patents = 6.1

CIPO Patents = 1

EPO Patents = 135

Trademarks = 17

Forward Citations = 1,517

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141 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 (17 out of 17 patents)

6. Akinobu Hira (17 out of 17 patents)

7. Tomoo Tokiwa (15 out of 15 patents)

8. Shota Takagi (15 out of 15 patents)

9. Mitsuru Shinohara (15 out of 16 patents)

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

11. Tom Malloy (14 out of 14 patents)

12. Clive Johnstone (13 out of 13 patents)

13. Masato Naito (13 out of 13 patents)

14. Mark Williams (11 out of 11 patents)

15. Naochika Kogure (11 out of 11 patents)

Core Competencies:

Polypropylene Foam

Thermoplastic Elastomer

Expanded Beads

Safety Helmet

Molded Articles

Polyamide Resin

Composite Materials

Respiratory Protection

Laminated Foam

Vehicle Seat Core

Hearing Protection

244 patents: Sort by Forward Citations

1. 12735545 - Polyethylene resin foamed particle, and method for producing same (2026-09-15),

2. D1146014 - Housing for respiratory filter unit for human use (2026-09-01),

3. 12698374 - Polyamide-based resin expanded beads, molded article of polyamide-based resin expanded beads, and method for producing polyamide-based resin expanded beads (2026-08-04),

4. D1131929 - Safety helmet (2026-06-23),

5. D1131780 - Filter housing for air respirator (2026-06-23),

6. 12653261 - Article of headgear, mounting clips, and accessories (2026-06-16),

7. 12649837 - Method for producing polyamide-based resin multi-stage-expanded beads (2026-06-09),

8. 12594699 - Method for producing polypropylene-based resin expanded beads (2026-04-07),

9. 12590176 - Hipe foam and method for producing same (2026-03-31),

10. 12589534 - Polypropylene-based resin expanded beads and molded article thereof (2026-03-31),

11. D1120512 - Safety helmet (2026-03-24),

12. 12570824 - Olefin-based thermoplastic elastomer foamed particle and olefin-based thermoplastic elastomer foamed particle molded body (2026-03-10),

13. 12539652 - Method for manufacturing laminate (2026-02-03),

14. 12503597 - Composite molded article (2025-12-23),

15. 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),

Company Overview

Jsp Corporation, headquartered in Tokyo, specializes in advanced polymer foam technology, focusing on the development and manufacturing of innovative materials. The company is recognized for its expertise in polypropylene foam and thermoplastic elastomers, which are utilized in a variety of applications including safety helmets and molded articles. Jsp also works with expanded beads, polyamide resins, and composite materials, contributing to sectors such as respiratory protection and other industrial applications, reinforcing its commitment to safety and performance.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

244 Patents

#312 in Tokyo

#620 in Japan

#3,548 in the World

Jsp Corporation

Forward Citations = 1,517

141 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 (17 out of 17 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Jsp Corporation. Retrieved from https://idiyas.com/company/jsp

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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