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Wakayama, Japan

Shima Seiki Mfg., Ltd.

USPTO Granted Patents = 172

% Expired Patents = 52.3

EPO Patents = 211

Trademarks = 3

Forward Citations = 918

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89 inventors (with patents filed for the assignee):

Kazuyoshi Okamoto (28 out of 34 patents)

Masahiro Shima (22 out of 47 patents)

Masao Okuno (16 out of 26 patents)

4. Masamitsu Ikenaka (13 out of 13 patents)

5. Toshinori Nakamori (12 out of 19 patents)

6. Kenta Terai (10 out of 10 patents)

7. Toshiaki Morita (10 out of 30 patents)

8. Kenji Ikoma (9 out of 14 patents)

9. Shigenobu Mitsumoto (9 out of 10 patents)

10. Minoru Sonomura (8 out of 12 patents)

11. Takekazu Shibuta (8 out of 8 patents)

12. Yoshinori Shimasaki (7 out of 9 patents)

13. Reiji Arikita (7 out of 9 patents)

14. Takashi Kino (6 out of 6 patents)

15. Masaki Miyamoto (6 out of 11 patents)

Core Competencies:

Knitting Method

Footwear Production

Yarn Feeding

Knitted Fabric

Fabric Grading

Protein Fiber

Seamless Gloves

Knitting Machine

Textile Products

Tubular Knitted Fabric

Pattern Creation

Weft Knitting

172 patents: Sort by Forward Citations

1. 12716150 - Knitted article (2026-08-25),

2. 12436614 - Contact pressure sensor, knit product having same, and method of manufacturing contact pressure sensor (2025-10-07),

3. 12163259 - Protein spun yarn manufacturing method (2024-12-10),

4. 12018405 - Protein fiber crimping method, protein fiber production method, protein fibers, spun yarn, and textile product (2024-06-25),

5. 11814782 - Surface-processed fiber, method for manufacturing same, thread, and fiber product (2023-11-14),

6. 11725314 - Grading method for knitted products and a grading system therefor (2023-08-15),

7. 11085135 - Knitting method of bag-shaped knitted fabric, and bag-shaped knitted fabric (2021-08-10),

8. 10745834 - Footwear provided with knitted fabric having double structure (2020-08-18),

9. 10724161 - Method of manufacturing footwear and footwear (2020-07-28),

10. 10626530 - Grading method and grading system for knitted product (2020-04-21),

11. 10590572 - Footwear (2020-03-17),

12. 10292455 - Shoe upper and method for producing shoe upper (2019-05-21),

13. 10184196 - Method for knitting knitted fabric (2019-01-22),

14. 10145041 - Method for knitting shoe upper and shoe upper (2018-12-04),

15. 10028545 - Shoe upper, and method for knitting shoe upper (2018-07-24),

Company Overview

Shima Seiki Mfg., Ltd., based in Wakayama, Japan, is a leader in the development and manufacturing of advanced knitting technology. The company specializes in innovative solutions for knitting methods, footwear production, and yarn feeding systems. Its expertise extends to seamless gloves and the production of high-quality knitted fabrics, utilizing protein fibers and sophisticated fabric grading techniques. Shima Seiki is committed to enhancing the textile industry through cutting-edge machinery and sustainable practices.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

172 Patents

#2 in Wakayama

#784 in Japan

#4,821 in the World

Wakayama, Japan

Shima Seiki Mfg., Ltd.

Forward Citations = 918

89 inventors:

Kazuyoshi Okamoto (28 out of 34 patents)

Masahiro Shima (22 out of 47 patents)

Masao Okuno (16 out of 26 patents)

4. Masamitsu Ikenaka (13 out of 13 patents)

5. Toshinori Nakamori (12 out of 19 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Shima Seiki Mfg., Ltd.. Retrieved from https://idiyas.com/company/shima-seiki-mfg

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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