Ruby Nikken Industry Co., Ltd. (Nagoya), 1950

ルビー日研工業㈱

From the 1950 Nagoya company list on Yaplog, Ruby Nikken made the CubStar (カブスター) moped scooter. Very little data is available, other than it seems to have used a 50cc Honda Model F Cub engine. I have found at least one other scooter company also using the Honda F engine called the Ono (or possibly Onoe) Scooter (オノエスクーター)