ECaSS® Forum was initiated in the non-profit part of Okamura Laboratory, Inc. The Lab was established in 1987 and originated ECS, or Energy Capacitor System in 1992. This is a very small company indeed; it could be one of the smallest laboratories in the world, with one research scientist, a treasurer, an assistant and two advisors. However, the company has twenty large and well-known clients including Honda, Nissan Diesel, Tokyo Electric Power, Chubu Electric Power, JEOL, Shizuki Electric, Mitsui and Co., Japan Gore-Tex/W.L.Gore & Associates, Nippon Chemi-Con, Ricoh, Omron, Daido Metal, and Power Systems.

The major products of Okamura Lab. are nothing more than papers and patents on ECS. All the practical products for which the laboratory recognized have been developed and produced by the clients. Fortunately, those clients are very capable and eager that various new products are appearing on the market as shown in separate articles.

On July 2002, ECS was renamed as ECaSS® in order to avoid confusion between other organizations such as the Electro Chemical Society, because our storage system is becoming spreading out worldwide.

More important finding had been revealed on March 1996. It was basic phenomena called the Nanogate Capacitors in the later days. The capacitor which could produce several to 10 times of the energy density, compared with that of the conventional one made of activated carbon.

On November 2004, Okamura Laboratory absorbed Power Systems with its 2.5 billion JPY capital and renamed Power Systems. This is the important first step from research to mass-production, which must be necessary to propagate capacitor storage system to the world.

At the same time, a non-profit activity of the Lab was started as ECaSS Forum.