Yūgen gaisha
A yūgen gaisha (有限会社; "limited company"), abbreviated in English as "Y.K." or "Co., Ltd.", was a form of business organization in Japan. Yūgen gaisha were based on the German Gesellschaft mit beschränkter Haftung and were implemented in Japan in the Limited Company Act (有限会社法, Yūgen gaisha hō) of 1940.