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    • 1. 发明授权
    • Hydrodynamic spinning of polymer fiber in coaxial laminar flows
    • 聚合物纤维在同轴层流中的流体动力学纺丝
    • US08834780B2
    • 2014-09-16
    • US12920066
    • 2009-03-02
    • Jackie Y. YingMin HuRensheng DengKarl SchumacherMotoichi Kurisawa
    • Jackie Y. YingMin HuRensheng DengKarl SchumacherMotoichi Kurisawa
    • B29C63/06D01D5/24A61L27/52D01D5/38D01D5/28
    • D01D5/28A61L27/52D01D5/24D01D5/38
    • A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer.
    • 聚合物纤维通过流体动力纺丝形成。 流体被迫流过导管以形成包含三层或更多层大体上同轴的流体流的层流,其各自的流速被选择为限定流体流的管状中间层的横截面。 中间层包含可交联的聚合物前体。 流体流的另一层包含交联剂。 选择聚合物前体,交联剂和流体以防止聚合物前体远离中间层的实质性扩散,并且允许一部分交联剂从另一层扩散到中间层以促进交叉 在中间层中连接聚合物前体以在聚合物纤维中形成管状聚合物层。 聚合物层因此具有一般对应于中间层的横截面的横截面。
    • 2. 发明申请
    • HYDRODYNAMIC SPINNING OF POLYMER FIBER IN COAXIAL LAMINAR FLOWS
    • 聚合纤维在同轴层流中的水动力纺丝
    • US20110006453A1
    • 2011-01-13
    • US12920066
    • 2009-03-02
    • Jackie Y. YingMin HuRensheng DengKarl SchumacherMotoichi Kurisawa
    • Jackie Y. YingMin HuRensheng DengKarl SchumacherMotoichi Kurisawa
    • B29C63/06
    • D01D5/28A61L27/52D01D5/24D01D5/38
    • A polymer fiber is formed by hydrodynamic spinning. Fluids are forced to flow through a conduit to form a laminar flow comprising three or more layers of generally coaxial fluid flows, at respective flow rates selected to define a cross-section of a tubular middle layer of the fluid flows. The middle layer comprises a cross-linkable polymer precursor. Another layer of the fluid flows comprise a cross-linking agent. The polymer precursor, cross-linking agent and fluids are selected to prevent substantial diffusion of the polymer precursor away from the middle layer, and to allow a portion of the cross-linking agent to diffuse from the another layer into the middle layer to facilitate cross-linking of the polymer precursor in the middle layer to form a tubular polymer layer in a polymer fiber. The polymer layer thus has a cross-section generally corresponding to the cross-section of the middle layer.
    • 聚合物纤维通过流体动力纺丝形成。 流体被迫流过导管以形成包含三层或更多层大体上同轴的流体流的层流,其各自的流速被选择为限定流体流的管状中间层的横截面。 中间层包含可交联的聚合物前体。 流体流的另一层包含交联剂。 选择聚合物前体,交联剂和流体以防止聚合物前体远离中间层的实质性扩散,并且允许一部分交联剂从另一层扩散到中间层以促进交叉 在中间层中连接聚合物前体以在聚合物纤维中形成管状聚合物层。 聚合物层因此具有一般对应于中间层的横截面的横截面。
    • 4. 发明申请
    • Porous Polymeric Articles
    • 多孔聚合物
    • US20110129924A1
    • 2011-06-02
    • US12308960
    • 2006-09-12
    • Jackie Y. YingEdwin Pei Yong ChowJeremy Ming Hock LohKarl Schumacher
    • Jackie Y. YingEdwin Pei Yong ChowJeremy Ming Hock LohKarl Schumacher
    • C12N5/071
    • A61L27/56B33Y80/00
    • Porous polymeric articles, and more specifically, porous polymeric articles for tissue engineering and organ replacement, are described. In some embodiments, methods described herein include use of a polymer-solvent system (e.g., phase inversion) to generate porosity in a structure. The process may include formation of a structure precursor material including a first crosslinkable component and a second component that can be precipitated in a precipitation medium. The structure precursor material may be shaped into a three-dimensional shape by a suitable technique such as three-dimensional printing. Upon shaping of the structure precursor material, at least a portion of the first component may be crosslinked. The structure may then be contacted with a precipitation medium to remove the precursor solvent from the structure, which can cause the second polymer component to precipitate and form a porous structure containing a network of uniform pores. In some embodiments, the porous structure is constructed and arranged for use as a template for ultrafiltration, cell growth, and/or for forming complex, biomimetic, porous biohybrid organs, where living cells can be immobilized and perform their normal physiological functions.
    • 描述了多孔聚合物制品,更具体地说,用于组织工程和器官置换的多孔聚合物制品。 在一些实施方案中,本文所述的方法包括使用聚合物 - 溶剂体系(例如相转化)以在结构中产生孔隙。 该方法可以包括形成包含可在沉淀介质中沉淀的第一可交联组分和第二组分的结构前体材料。 结构前体材料可以通过诸如三维印刷之类的合适技术成形为三维形状。 在结构前体材料成型时,第一组分的至少一部分可以是交联的。 然后可以将结构与沉淀介质接触以从结构中除去前体溶剂,这可使第二聚合物组分沉淀并形成含有均匀孔网络的多孔结构。 在一些实施方案中,多孔结构被构造和布置为用作超滤,细胞生长和/或形成复合物,仿生性,多孔生物杂交器官的模板,其中活细胞可被固定并执行其正常的生理功能。
    • 8. 发明申请
    • Wafer exposure device and method
    • 晶圆曝光装置及方法
    • US20080079920A1
    • 2008-04-03
    • US11541400
    • 2006-09-29
    • Heiko HommenNorman BirnsteinKarl SchumacherJens Staecker
    • Heiko HommenNorman BirnsteinKarl SchumacherJens Staecker
    • G03B27/52
    • G03F7/7085G03F9/7026G03F9/7088H01L21/681
    • A wafer exposure device includes a wafer stage. An optical exposure system exposes a wafer on the wafer stage. A sensor block measures a distance to a wafer provided on the wafer stage. The sensor block includes a plurality of height level sensors. Each height level sensor measures and outputs height level values. The wafer exposure device compares with one another the measured height level values outputted by respective height level sensors. The wafer exposure device calculates individual sensor position offset values to be attributed to the individual height level sensors. The wafer exposure device corrects the measured height level values output by the respective height level sensors using the calculated sensor position offset values of the respective height level sensor.
    • 晶片曝光装置包括晶片台。 光学曝光系统在晶片台上露出晶片。 传感器块测量到设置在晶片台上的晶片的距离。 传感器块包括多个高度水平传感器。 每个高度传感器测量并输出高度值。 晶片曝光装置将相应的高度电平传感器输出的测量高度电平值彼此进行比较。 晶片曝光装置计算归因于各个高度传感器的各个传感器位置偏移值。 晶片曝光装置使用计算出的相应高度传感器的传感器位置偏移值来校正由各个高度传感器输出的测量高度值。