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    • 3. 发明授权
    • Particle analyzer and composite lens formed by integrally joining plural lens elements of different focal points
    • 通过将不同焦点的多个透镜元件整体连接而形成的粒子分析器和复合透镜
    • US06409141B1
    • 2002-06-25
    • US09629425
    • 2000-07-31
    • Masao YamazakiYutaka NagaiKatsuhiro TsuchiyaYoshiyuki Takahara
    • Masao YamazakiYutaka NagaiKatsuhiro TsuchiyaYoshiyuki Takahara
    • B29D1100
    • G01N15/1434G01N15/0211G01N15/14G01N2015/1447G01N2015/149G01N2021/4716Y10S425/808
    • A flow cell 2, a composite lens 15, and first to third detectors 16 to 18 are arranged in this sequence in the light pathway of light emitted from a laser light source 1. The composite lens 15 is configured by a convex lens 15a, and lens elements 15b and 15c. These lenses have different focal lengths. When the posture of the composite lens is correct, light impinging on the convex lens forms an image on the first detector. Therefore, the positioning of the composite lens is enabled. When particles in the flow cell are irradiated with laser light, forward scatter is produced. Forward small angle scatter having a small scattering angle impinges on the first lens element 15b to be collected thereby, and is then received by the second detector 17. Forward large angle scatter having a large scattering angle impinges on the second lens element 15c in the outermost periphery to be collected thereby, and is then received by the third detector 18 which is remotest from the composite lens.
    • 流动池2,复合透镜15和第一至第三检测器16至18依次排列在从激光光源1发射的光的光路中。复合透镜15由凸透镜15a构成,并且 透镜元件15b和15c。 这些镜头具有不同的焦距。 当复合透镜的姿势正确时,入射到凸透镜上的光在第一检测器上形成图像。 因此,能够进行复合透镜的定位。 当流动池中的颗粒被激光照射时,产生向前散射。 具有小散射角的前向小角度散射物撞击在第一透镜元件15b上以被收集,然后由第二检测器17接收。具有大散射角的正向大角度散射物撞击最外侧的第二透镜元件15c 周边由此被收集,然后由距离复合透镜最远的第三检测器18接收。
    • 7. 发明授权
    • Method of purification of human BCDF
    • 人BCDF纯化方法
    • US5610284A
    • 1997-03-11
    • US275663
    • 1994-07-15
    • Daisuke EjimaYutaka SatoMayumi WatanabeMasayo DateYoshiyuki Takahara
    • Daisuke EjimaYutaka SatoMayumi WatanabeMasayo DateYoshiyuki Takahara
    • A61K38/00C07K14/54C07K1/14C12N15/19
    • C07K14/5412A61K38/00
    • There are disclosed (i) a purification process for obtaining a human BCDF having the intramolecular disulfide linkage and the stereostructure of natural type human BCDF which comprises subjecting to an oxidation reaction and a refolding treatment a reduced type human BCDF obtained by culturing a microorganism having a human BCDF gene integrated therein and solubilized with guanidine hydrochloride, characterized in that after the oxidation reaction, a gel filtration chromatographic treatment is conducted under the conditions of the guanidine hydrochloride concentration adjusted to 4-7M; (ii) a purification process for obtaining a natural type human BCDF monomer by removing the organic solvent from an organic solvent-containing solution of human BCDF, characterized in that the solution is passed through a gel filtration chromatographic column equilibrated with an organic solvent, followed by eluting according to a stepwise or linear gradient program; and (iii) a human BCDF purification process comprising an ion exchange chromatographic treatment and a reversed phase HPLC step, in combination (i) or (ii). According to these purification processes, it becomes possible to remove the impurities derived from a microorganism and human BCDF analogs, and the thus obtained natural type human BCDF has a high purity and can be utilized for pharmaceutical preparations.
    • 公开了(i)用于获得具有分子内二硫键的人BCDF和天然型人BCDF的立体结构的纯化方法,其包括进行氧化反应和重折叠处理,所述还原型人BCDF通过培养具有 人BCDF基因整合在其中并用盐酸胍溶解,其特征在于,在氧化反应后,在盐酸胍浓度调节至4-7M的条件下进行凝胶过滤色谱处理; (ii)通过从含有机溶剂的人BCDF中除去有机溶剂来获得天然型人BCDF单体的纯化方法,其特征在于使溶液通过用有机溶剂平衡的凝胶过滤色谱柱,随后 通过逐步或线性梯度程序洗脱; 和(iii)包含离子交换色谱处理和反相HPLC步骤(组合(i)或(ii))的人BCDF纯化方法。 根据这些纯化方法,可以除去由微生物和人BCDF类似物衍生的杂质,由此得到的天然型人BCDF具有高纯度,可用于药物制剂。