The research was made on how ecomaterials are currently used in Japan. All the information was obtained from 2001 to 2004 year version environmental reports on the Web-sites of the organizations concerned. In this paper, about 3900 ecomaterials produced by approximately 280 listed companies on the stock market were researched and classified into six categories. The number of ecomaterials produced in Japan has doubled in these several years and research activities in this field seem to be getting rather well-balanced. Our effort is focused on the analysis of the characteristics of "Greener process" and "Greener resource" type ecomaterials. The ecomaterials of each industry have their own characteristics according to an industry to which they belong. And each industry still has its own particular environmental subject to tackle.