EPO Patents = 2

Forward Citations = 148

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6 inventors (with patents filed for the assignee):

Yoshihiro Koyanagi (3 out of 9 patents)

Mikio Tanaka (2 out of 10 patents)

Osamu Nakagiri (1 out of 4 patents)

4. Yoshifumi Koyanagi (1 out of 1 patent)

5. Katsumi Nakano (1 out of 1 patent)

6. Hideo Nakata (1 out of 1 patent)

7. Koyanagi Yoshihumi (0 patent)

8. Koyanagi Yoshihiro (0 patent)

6 patents: Sort by Forward Citations

1. 9517874 - Valve structure (2016-12-13),

2. 7297387 - Air-filling cushioning material and method for manufacturing the same (2007-11-20),

3. 7249612 - Mounting structure of an open/close valve in a sealed body (2007-07-31),

4. 7228969 - Air-filled cushioning material (2007-06-12),

5. 5927336 - Check valve, pouch with the check valve, and manufacturing apparatus (1999-07-27),

6. 5540500 - Compressive sealed bag for compressible articles such as clothing and (1996-07-30),

Kashiwara Seitai Co., Ltd. is a Japanese company specialized in manufacturing and distributing high-quality organic and natural health products. With a focus on promoting overall well-being, Kashiwara Seitai offers a wide range of products including supplements, skincare, and health foods. Their dedication to quality and customer satisfaction has made them a trusted name in the industry.

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USPTO Data Jan 1 1976 - Dec 16 2025

6 Patents

#1 in Kashiwara-Shi

#5,840 in Japan

Kashiwara-Shi, Japan

Kashiwara Seitai Co., Ltd.