专利类型:
相变材料专利导航
公开（公告）号:
EP0431555B1
申请日:
1990-12-04
申请局:
EP
原始专利权人:
MITSUBISHI PETROCHEMICAL ENGINEERING CO., LTD. | JAPAN ETHANOL COMPANY LIMITED | TOKYO GAS CO., LTD.
当前专利权人:
Tokyo Gas Co Ltd | Japan Ethanol Co Ltd | Mitsubishi Petrochemicals Engineering Co Ltd