Title:
【発明の名称】二重中空円筒体
Document Type and Number:
Japanese Patent JP3008411
Kind Code:
B2
Inventors:
Kazushi Matsuura
Masashi Ishihara
Toshio Karigome
Masao Fukasawa
Masashi Ishihara
Toshio Karigome
Masao Fukasawa
Application Number:
JP18634889A
Publication Date:
February 14, 2000
Filing Date:
July 19, 1989
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
Tokai Carbon Co., Ltd.
Tokai Carbon Co., Ltd.
International Classes:
B22F3/14; (IPC1-7): B22F3/14
Domestic Patent References:
| JP492116A | ||||
| JP60198418U | ||||
| JP60158992U | ||||
| JP145196U |
Attorney, Agent or Firm:
Koji Hasegawa