EPO Patents = 2

Forward Citations = 58

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18 inventors (with patents filed for the assignee):

Katsuhiro Nagayama (3 out of 9 patents)

Yutaka Araki (3 out of 8 patents)

Seiji Hanatani (3 out of 7 patents)

4. Satoru Funakoshi (3 out of 16 patents)

5. Syohei Masui (3 out of 9 patents)

6. Hiroyuki Yoshitake (3 out of 4 patents)

7. Masami Fujimaki (3 out of 4 patents)

8. Atsuhiro Hattori (2 out of 5 patents)

9. Yuji Kobayashi (2 out of 13 patents)

10. Tsutomu Takagi (2 out of 2 patents)

11. Taiji Matsumoto (2 out of 3 patents)

12. Shigeru Takano (1 out of 9 patents)

13. Tomoshige Ono (1 out of 7 patents)

14. Takayuki Kumamoto (1 out of 3 patents)

15. Yukio Nagashima (1 out of 2 patents)

7 patents: Sort by Forward Citations

1. 11920015 - Web, stampable sheet, and expansion molded product (2024-03-05),

2. 11511683 - Vehicle headliner and production method thereof (2022-11-29),

3. 8815056 - Web on stampable sheet and method of making (2014-08-26),

4. 8491754 - Web, stampable sheet and stampable sheet expanded product as well as method of producing the same (2013-07-23),

5. 5981046 - Sound absorbing component (1999-11-09),

6. 5908524 - Method for producing fiber-reinforced thermoplastic resin molded article (1999-06-01),

7. 5854149 - Paper-made stampable sheet, light-weight stampable sheet shaped body and (1998-12-29),

Company Overview

K-plasheet Corporation is a leading manufacturer of high-quality plastic sheets for various industries. With a wide range of products and exceptional customer service, we are committed to providing innovative solutions that meet the needs of our clients. Our company is dedicated to sustainability and environmental responsibility, using eco-friendly materials and practices in our manufacturing processes. Visit our website to learn more about our products and services.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#62 in Chiba

#5,456 in Japan

Chiba, Japan

K-Plasheet Corporation

Forward Citations = 58

18 inventors:

Katsuhiro Nagayama (3 out of 9 patents)

Yutaka Araki (3 out of 8 patents)

Seiji Hanatani (3 out of 7 patents)

4. Satoru Funakoshi (3 out of 16 patents)

5. Syohei Masui (3 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: K-Plasheet Corporation. Retrieved from https://idiyas.com/company/k-plasheet

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]

2 patents (EPO):

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]