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For the Inventor, By the Inventor

Tokyo, Japan

Toyo Seikan Group Holdings, Ltd.


USPTO Granted Patents = 210



Trademarks = 5

Forward Citations = 190

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252 inventors (with patents filed for the assignee):

goldMedal Yosuke Akutsu (23 out of 23 patents)

silverMedal Ryo Suenaga (22 out of 27 patents)

bronzeMedal Takashi Sato (16 out of 164 patents)

4.  Shinya Iwamoto (15 out of 15 patents)

5.  Takahiko Totani (13 out of 16 patents)

6.  Yoichi Ishizaki (11 out of 18 patents)

7.  Kazuaki Ohashi (11 out of 18 patents)

8.  Shunya Nangou (11 out of 13 patents)

9.  Takayuki Ishihara (11 out of 25 patents)

10.  Seishi Yoshikawa (10 out of 14 patents)

11.  Yoshihiro Ohta (9 out of 30 patents)

12.  Yasuhiro Kosaka (9 out of 11 patents)

13.  Toshiki Yamada (9 out of 17 patents)

14.  Hiroshi Shimomura (8 out of 24 patents)

15.  Ryozo Shiroishi (8 out of 8 patents)


Core Competencies:
Cell Culture
Packaging Solutions
Laminated Structures
Polymer Compositions
Gas-Barrier Materials
Nanocellulose Production
Flexible Device Substrates
Antiviral Solutions
Metal Plastic Working
Water Barrier Films
Oxygen-Absorbing Films
Cell Culture Systems

210 patents:

1. 12497583 - Adherent cell culture substrate, culture vessel, cell detachment method, and method for producing adherent cell culture substrate (2025-12-16),
2. 12486090 - Layered body for packaging (2025-12-02),
3. 12410389 - Cell culturing method and device (2025-09-09),
4. 12391910 - Sphere culture member, culture container, method for processing perforated member, and cleaning container (2025-08-19),
5. 12378051 - Packaging bag (2025-08-05),
6. 12351787 - Culture container, culture method, and transportation method (2025-07-08),
7. 12343778 - Die for ironing working and die module (2025-07-01),
8. 12319902 - Container for cell culture and use method therefor (2025-06-03),
9. 12305194 - Cell culture method and cell culture system (2025-05-20),
10. 12291625 - Cellulose nanocrystal-containing resin composition (2025-05-06),
11. D1069160 - Cell culture bag (2025-04-01),
12. D1069159 - Cell culture bag (2025-04-01),
13. D1069158 - Cell culture bag (2025-04-01),
14. 12264307 - Culture container, method for culturing lymphocytes, culture-container production method, and solid-phasing apparatus (2025-04-01),
15. 12258548 - Method for producing culture vessel, and culture vessel (2025-03-25),
Toyo Seikan Group Holdings, Ltd. is a Japanese company with a diverse range of businesses including metal packaging, packaging materials, functional materials, logistics, and more. They provide innovative solutions and high-quality products to various industries such as food, beverages, healthcare, and consumer goods worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

210 Patents

#298 in Tokyo

#666 in Japan

#3,929 in the World

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Tokyo, Japan

Toyo Seikan Group Holdings, Ltd.

Forward Citations = 190

252 inventors:

goldMedal Yosuke Akutsu (23 out of 23 patents)

silverMedal Ryo Suenaga (22 out of 27 patents)

bronzeMedal Takashi Sato (16 out of 164 patents)

4.  Shinya Iwamoto (15 out of 15 patents)

5.  Takahiko Totani (13 out of 16 patents)

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