logo

For the Inventor, By the Inventor

Tokyo, Japan

Tanken Seiko Corp.


USPTO Granted Patents = 3

Forward Citations = 48

Loading Chart...
Loading Chart...

4 inventors (with patents filed for the assignee):

goldMedal Yataro Nagai (2 out of 8 patents)

silverMedal Mitsuyoshi Matsushita (1 out of 7 patents)

bronzeMedal Yoshiro Imai (1 out of 1 patent)

4.  Kazuya Fukuoka (1 out of 1 patent)


3 patents:

1. 4545588 - Mechanical face seal for sealing slurry liquid (1985-10-08),
2. 4463957 - Sealing device for rotary shaft and string-like member for defining (1984-08-07),
3. 4196911 - Mechanical seal (1980-04-08),
logo

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

3 Patents

#3,263 in Tokyo

#8,771 in Japan

...
Tokyo, Japan

Tanken Seiko Corp.

Forward Citations = 48

4 inventors:

goldMedal Yataro Nagai (2 out of 8 patents)

silverMedal Mitsuyoshi Matsushita (1 out of 7 patents)

bronzeMedal Yoshiro Imai (1 out of 1 patent)

4.  Kazuya Fukuoka (1 out of 1 patent)

Please report any incorrect information to support@idiyas.com
Loading…