OHTO CO., LTD.(オート株式会社）is a Japanese pen manufacturing company selling the “OHTO” brand. The company was established in 1929 as a manufacturer of dyes and ink. In 1949, the company became famous as a pen manufacturer after they manufactured the world’s first ball point pen with chrome ball. This was also Japan’s first ballpoint pen.
Since then, the company have introduced writing instruments such as the Roller Pen, Ceramic Roller Pen, Single blocked strong needle tip, and Needle tipped soft ink roller pen, Ceramic Roller Pen, Ceramic refill (C-300 series), Soft Ink Roller Pen, Free Ink Roller Pen, and Promecha drafting pencil