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Koken Ltd.

USPTO Granted Patents = 25

CIPO Patents = 4

EPO Patents = 13

Trademarks = 3

Forward Citations = 92

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30 inventors (with patents filed for the assignee):

Taketo Suzuki (7 out of 7 patents)

Kozo Nitta (7 out of 7 patents)

Takahiro Sato (6 out of 77 patents)

4. Tomoyuki Kakinuma (6 out of 6 patents)

5. Kazushi Kimura (5 out of 10 patents)

6. Yuki Fujishiro (5 out of 5 patents)

7. Kazuma Fukiura (5 out of 5 patents)

8. Tomoyuki Tajima (3 out of 5 patents)

9. Shingo Ishikawa (2 out of 3 patents)

10. Hironobu Takeuchi (2 out of 2 patents)

11. Satoshi Kuriyama (2 out of 2 patents)

12. Tomoyuki Naito (2 out of 2 patents)

13. Takahiro Terajima (2 out of 2 patents)

14. Takako Nakatou (2 out of 2 patents)

15. Shinji Noguchi (2 out of 2 patents)

25 patents: Sort by Forward Citations

1. D1036652 - Mask (2024-07-23),

2. 10815587 - Sheet of microfiber assembly (2020-10-27),

3. 10638802 - Mask provided with latch (2020-05-05),

4. 10478874 - Local air cleaner (2019-11-19),

5. 10295207 - Air blowing device (2019-05-21),

6. 10197302 - Local air cleaning apparatus (2019-02-05),

7. 10161645 - Local air cleaning apparatus (2018-12-25),

8. 10010728 - Respiratory protection device (2018-07-03),

9. 9901758 - Respiratory protection device (2018-02-27),

10. 9791161 - Local clean zone forming apparatus (2017-10-17),

11. 9644855 - Air blowing devices aligned in width direction (2017-05-09),

12. 9592410 - Voice transmitter (2017-03-14),

13. 9410710 - Purified air discharge device (2016-08-09),

14. 9333378 - Air cleaning apparatus and method for predicting breakthrough time for the same (2016-05-10),

15. 9050478 - Supply valve for air respirator (2015-06-09),

Koken Ltd. is a leading manufacturer of high-quality kitchenware and appliances. With a focus on innovative design and functionality, Koken offers a wide range of products for home cooks, professional chefs, and culinary enthusiasts. From cookware and bakeware to small kitchen appliances, Koken is dedicated to providing customers with the tools they need to create delicious meals with ease and efficiency.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

25 Patents

#1,048 in Tokyo

#2,518 in Japan

#24,954 in the World

Koken Ltd.

Forward Citations = 92

30 inventors:

Taketo Suzuki (7 out of 7 patents)

Kozo Nitta (7 out of 7 patents)

Takahiro Sato (6 out of 77 patents)

4. Tomoyuki Kakinuma (6 out of 6 patents)

5. Kazushi Kimura (5 out of 10 patents)

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