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For the Inventor, By the Inventor

Tokyo, Japan

Yoshino Kogyosho Co., Ltd.


USPTO Granted Patents = 665



Trademarks = 1

Forward Citations = 8,855

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355 inventors (with patents filed for the assignee):

goldMedal Takao Iizuka (79 out of 99 patents)

silverMedal Shigeo Iizuka (49 out of 50 patents)

bronzeMedal Tadao Saito (46 out of 77 patents)

4.  Akiho Ota (42 out of 43 patents)

5.  Masaaki Sasaki (39 out of 96 patents)

6.  Takamitsu Nozawa (37 out of 38 patents)

7.  Hiroshi Mizushima (32 out of 32 patents)

8.  Yuichi Okuyama (31 out of 40 patents)

9.  Yoshiyuki Kakuta (31 out of 34 patents)

10.  Takao Kishi (30 out of 34 patents)

11.  Mitsuru Shiokawa (28 out of 37 patents)

12.  Hiroaki Sugiura (24 out of 110 patents)

13.  Toshimasa Tanaka (22 out of 32 patents)

14.  Shinji Shimada (21 out of 25 patents)

15.  Katsuhito Kuwahara (20 out of 20 patents)


Core Competencies:
Injection Molding
Liquid Sprayer
Container Manufacturing
Blow Molding
Synthetic Resin Containers
Double-Layered Containers
Delamination Technology
Dispensing Solutions
Liquid Blow Molding
Preform Assembly
Barrier Caps
Compact Containers

665 patents:

1. 12420985 - Method of injection molding preform (2025-09-23),
2. 12397307 - Trigger-type liquid sprayer (2025-08-26),
3. 12358204 - Method for manufacturing liquid container (2025-07-15),
4. 12343745 - Trigger-type liquid ejector (2025-07-01),
5. 12286261 - Double-layered container (2025-04-29),
6. 12264007 - Delamination container (2025-04-01),
7. 12246479 - Blow molding device (2025-03-11),
8. 12240668 - Barrier cap (2025-03-04),
9. 12220039 - Dispensing container (2025-02-11),
10. 12208937 - Bottle (2025-01-28),
11. 12187483 - Delamination container (2025-01-07),
12. 12179985 - Decompression absorption bottle (2024-12-31),
13. 12151845 - Preform assembly, double container, and method of manufacturing double container (2024-11-26),
14. 12145764 - Preform, synthetic resin container, and method for manufacturing synthetic resin container (2024-11-19),
15. 12103728 - Square bottle (2024-10-01),
YOSHINO KOGYOSHO CO., LTD. is a leading company in the field of industrial machinery. We specialize in manufacturing high-quality equipment for various industries, including automotive, electronics, and pharmaceuticals. Our products are known for their reliability, precision, and advanced technology. With a strong commitment to customer satisfaction, we provide customized solutions to meet the specific needs of our clients. Visit our website for more information.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

665 Patents

#132 in Tokyo

#300 in Japan

#1,452 in the World

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Tokyo, Japan

Yoshino Kogyosho Co., Ltd.

Forward Citations = 8,855

355 inventors:

goldMedal Takao Iizuka (79 out of 99 patents)

silverMedal Shigeo Iizuka (49 out of 50 patents)

bronzeMedal Tadao Saito (46 out of 77 patents)

4.  Akiho Ota (42 out of 43 patents)

5.  Masaaki Sasaki (39 out of 96 patents)

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