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Toyo Seikan Kaisha, Ltd.

USPTO Granted Patents = 586

CIPO Patents = 9

EPO Patents = 166

Trademarks = 1

Forward Citations = 7,599

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666 inventors (with patents filed for the assignee):

Yoshitsugu Maruhashi (35 out of 36 patents)

Katsuhiro Imazu (33 out of 36 patents)

Seishichi Kobayashi (31 out of 31 patents)

4. Hiroshi Ueno (31 out of 47 patents)

5. Hideo Kurashima (30 out of 30 patents)

6. Kazuo Taira (26 out of 26 patents)

7. Kazuhisa Ishibashi (26 out of 26 patents)

8. Tsuneo Imatani (25 out of 25 patents)

9. Muneki Yamada (24 out of 24 patents)

10. Sadao Hirata (22 out of 22 patents)

11. Akira Kobayashi (20 out of 29 patents)

12. Kikuo Matsuoka (20 out of 20 patents)

13. Hiroshi Matsubayashi (19 out of 19 patents)

14. Kenji Matsuno (17 out of 17 patents)

15. Masanori Aizawa (16 out of 20 patents)

Core Competencies:

Plastic Containers

Multilayered Containers

Biodegradable Resins

Gas-Barrier Laminated Members

RFID Tag Substrates

Compression-Molding Apparatus

Sterilization Methods

Decorative Can Bodies

Extrusion Die Heads

Thermoplastic Resin Pellets

Packaging Pouches

Heat-Resistant Polyester Bottles

586 patents: Sort by Forward Citations

1. 10370139 - Plastic container having pearl-like appearance and process for producing the same (2019-08-06),

2. 10065756 - Method and device for gas replacement of container (2018-09-04),

3. 9956716 - Multilayered container (2018-05-01),

4. 9926522 - Culture container for adherent cells and method for producing culture container for adherent cells (2018-03-27),

5. 9849619 - Apparatus for correcting the bending of a molten resin and method of correcting the bending of the molten resin (2017-12-26),

6. 9410251 - Resin-coated aluminum alloy sheet and formed body using resin-coated aluminum alloy sheet (2016-08-09),

7. 9388376 - Method for counting subject matters to be counted in container (2016-07-12),

8. 9321198 - Stretched and foamed plastic container and method of producing the same (2016-04-26),

9. 9284432 - Method for degrading a readily-degradable resin composition (2016-03-15),

10. 9283697 - Stretched and foamed plastic container and method of producing the same (2016-03-15),

11. 9283498 - Defoaming method and device (2016-03-15),

12. 9266309 - Method of producing gas-barrier laminated member (2016-02-23),

13. 9233522 - Polyester resin for coating metal plate, resin-coated metal plate being coated with the same, and metal can and lid (2016-01-12),

14. 9139328 - Synthetic resin container (2015-09-22),

15. 9102191 - Method for decorating plastic package (2015-08-11),

TOYO SEIKAN KAISHA, LTD. is a Japanese company that specializes in metal packaging products for various industries. They provide innovative and sustainable solutions for the food, beverage, and other consumer goods sectors. With a rich history dating back to 1917, Toyo Seikan Kaisha has established itself as a leading manufacturer and supplier of metal cans, containers, and packaging materials. Their commitment to quality, technology, and customer satisfaction has made them a trusted partner for businesses worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

586 Patents

#147 in Tokyo

#328 in Japan

#1,617 in the World

Toyo Seikan Kaisha, Ltd.

Forward Citations = 7,599

666 inventors:

Yoshitsugu Maruhashi (35 out of 36 patents)

Katsuhiro Imazu (33 out of 36 patents)

Seishichi Kobayashi (31 out of 31 patents)

4. Hiroshi Ueno (31 out of 47 patents)

5. Hideo Kurashima (30 out of 30 patents)

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