发明授权
EP0769775B1 Hematite particles for non-magnetic undercoat layer for magnetic recording medium, process for producing the same, non-magnetic undercoat layer and magnetic recording medium
失效
赤铁矿的磁记录介质的非磁性底涂层,制造方法,非磁性底层,磁性Aufzeignungsmedium
- 专利标题: Hematite particles for non-magnetic undercoat layer for magnetic recording medium, process for producing the same, non-magnetic undercoat layer and magnetic recording medium
- 专利标题(中): 赤铁矿的磁记录介质的非磁性底涂层,制造方法,非磁性底层,磁性Aufzeignungsmedium
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申请号: EP96307609.6申请日: 1996-10-18
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公开(公告)号: EP0769775B1公开(公告)日: 2002-04-17
- 发明人: Hayashi, Kazuyuki , Iwasaki, Keisuke , Tanaka, Yasuyuki , Morii, Hiroko
- 申请人: Toda Kogyo Corporation
- 申请人地址: 1-2, Funairi-minami 4-chome, Naka-ku Hiroshima-shi, Hiroshima-ken JP
- 专利权人: Toda Kogyo Corporation
- 当前专利权人: Toda Kogyo Corporation
- 当前专利权人地址: 1-2, Funairi-minami 4-chome, Naka-ku Hiroshima-shi, Hiroshima-ken JP
- 代理机构: Woods, Geoffrey Corlett
- 优先权: JP29785295 19951020
- 主分类号: G11B5/738
- IPC分类号: G11B5/738
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