发明授权
- 专利标题： Composite particles comprising ferromagnetic particle, fluorescent pigment and a silica coating
- 专利标题（中）： 复合颗粒包含铁磁颗粒，荧光颜料和二氧化硅涂层
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申请号： US11081537申请日： 2005-03-17
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公开(公告)号： US07381467B2公开(公告)日： 2008-06-03
- 发明人: Satoko Arai , Mikio Kishimoto , Kenji Kohno , Masahiro Kusumoto , Yoshiaki Nishiya
- 申请人： Satoko Arai , Mikio Kishimoto , Kenji Kohno , Masahiro Kusumoto , Yoshiaki Nishiya
- 申请人地址： JP Osaka
- 专利权人： Hitachi Maxell, Ltd.
- 当前专利权人： Hitachi Maxell, Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JPP2004-079391 20040319
- 主分类号： B32B5/16
- IPC分类号： B32B5/16
摘要：
The present invention provides composite particles which have magnetism and simultaneously emit fluorescence with a variety of wavelengths, and which are suitable for use in the fields of biology, biochemistry or the like. The composite particles of the present invention comprise ferromagnetic iron oxide particles, fluorescent pigment particles and silica, and have an average particle size of 1 to 10 μm, a coercive force of 2.39 to 11.94 kA/m (30 to 150 oersted), saturation magnetization of 0.5 to 40 A.m2/kg (0.5 to 40 emu/g). The peak value of the wavelength of fluorescence from the composite particle is in the range of 350 to 750 nm, when the composite particle is excited by light with a wavelength of 250 to 600 nm.
公开/授权文献
- US20060062999A1 Composite particles 公开/授权日：2006-03-23