发明授权
- 专利标题: Highly-coercive isometric iron oxides, a process for the production and the use thereof
- 专利标题(中): 高强度等距铁氧化物,其生产和使用的方法
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申请号: US767900申请日: 1985-08-21
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公开(公告)号: US5002751A公开(公告)日: 1991-03-26
- 发明人: Jurgen Wiese , Gunter Buxbaum , Rolf Schafer , Fritz Rodi
- 申请人: Jurgen Wiese , Gunter Buxbaum , Rolf Schafer , Fritz Rodi
- 申请人地址: DEX Leverkusen-Bayerwerk
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen-Bayerwerk
- 优先权: DEX3432224 19840901
- 主分类号: C01G49/06
- IPC分类号: C01G49/06 ; C01G49/08 ; G03G9/08 ; G03G9/083 ; G11B5/706 ; H01F1/11
摘要:
Highly-coercive isometric iron oxide useful in magnetic toners for electrostatic photo-copying processes or for magnetic printers is produced by(a) subjecting Fe.sub.3 O.sub.4 pigment produced in a wet process to oxidation and(b) subsequently reducing the oxidized pigment from (a) to produce highly-coercive Fe.sub.3 O.sub.4 pigment.
公开/授权文献
- US5800219A Stamped battery terminal 公开/授权日:1998-09-01
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