what was a yugen kaisha yk 
a yugen kaisha yk was a type of limited liability company that could be established in japan from 1940 through early 2006 the companies act enacted in japan in june 2005 abolished the yk business form the law changed most yks into kks or kabushiki kaisha kk which were in turn replaced by godo gaisha gg a joint stock company which is now the most common business form in japan the corporation law also changed the corporate governance of yks 