There is not much about Kanedai China to be found in English on line, although there are many sites selling replacements, sets or pieces of various patterns. The common patterns seen on ebay, etc. are Ivy, Canyon Pine, and Romany. I have seen one made in Occupied Japan, so that would have placed the manufacture in the late 1940's or so.
What I found in Japanese is that the company, Kanedai Shirokiya, Inc., was established in 1902. It is located in Toki City, Gifu, Japan. This region ( Gifu-Mino and Aichi-Seto) produces most of the tableware used in Japan, as well as exports.
http://www.kanedai.co.jp
This pattern of china seems to have been quite popular. Various pieces of the original set are sold on many internet sites.