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    • 26. 发明授权
    • Magnetic recording medium having a magnetic layer prepared from magnetic
particles using specified dispersants which enhance the electrostatic
change on the magnetic pigment surface
    • 磁记录介质具有使用增强磁性颜料表面的静电变化的特定分散剂由磁性颗粒制备的磁性层
    • US5415929A
    • 1995-05-16
    • US53864
    • 1993-04-29
    • Attila VassWolf-Dieter SchroeerHans-Heinrich Credner
    • Attila VassWolf-Dieter SchroeerHans-Heinrich Credner
    • G11B5/70G11B5/712G11B5/00
    • G11B5/7013G11B5/712Y10S428/90Y10T428/25Y10T428/2991Y10T428/2998
    • In the preparation of dispersions of magnetic pigments in organic solvents, dispersants which have a sterically stabilizing effect are used. Milling results in division of the pigment aggregates, which combine again as a result of attractive forces to give secondary agglomerates in the event of poor stabilization. These flocculating materials must be removed from the dispersion by expensive filtration. If an increase in the fineness or pigment batch fluctuations lead to an increase in the secondary agglomerates, filter breakthroughs may occur, resulting in a dramatic reduction in the yield of magnetic recording medium. It was found that excellent dispersion stability is achieved when the magnetic pigments are first precoated with a long-chain dispersant. Subsequently, the use of charge-generating, low molecular weight codispersants, a charge build-up on the pigment is specifically induced by means of bases or acids. The electrostatic repulsion which additionally becomes effective leads to an increase in the dispersion stability. The charges on the pigment are monitored by means of ESA measurements (electrokinetic sound amplitude). These ESA measurements make it possible to establish the order of addition of the dispersants and the optimum amount of codispersant.
    • 在制备磁性颜料在有机溶剂中的分散体时,使用具有空间稳定作用的分散剂。 研磨会导致颜料聚集体的分离,其由于吸引力而再次结合,以在稳定性差的情况下产生二次聚集体。 这些絮凝材料必须通过昂贵的过滤从分散体中除去。 如果细度或颜料批量波动的增加导致二次附聚物的增加,则可能发生滤光器突破,导致磁记录介质的产率显着降低。 发现当首先用长链分散剂预涂磁性颜料时,可获得优异的分散稳定性。 随后,通过碱或酸特异性地诱导使用电荷产生的低分子量分散剂,颜料上的电荷积聚。 另外变得有效的静电排斥导致分散稳定性的增加。 通过ESA测量(电动声音振幅)监测颜料上的电荷。 这些ESA测量使得可以确定分散剂的添加顺序和最佳的分散剂量。
    • 28. 发明授权
    • Broadcast messaging in peer to peer overlay network
    • 对等覆盖网络中的广播消息传递
    • US08837477B2
    • 2014-09-16
    • US13170096
    • 2011-06-27
    • Yutaka TakedaHoward BerkeyPayton R. WhiteAttila Vass
    • Yutaka TakedaHoward BerkeyPayton R. WhiteAttila Vass
    • H04L12/28H04L12/56H04L12/18
    • H04L12/1854
    • Broadcast messages are efficiently directed to nodes of an overlay network. Broadcast messages include an End ID parameter specifying the range of key values for nodes that should receive the broadcast message. Each node of an overlay network maintains a list of finger nodes and their respective key values. Upon receiving a broadcast message, a node assigns a finger node a new End ID value based upon the End ID value of the broadcast message or the key value of an adjacent finger node. The node compares a finger node's new End ID value with the finger node's key value to determine whether to forward the broadcast message to that finger node. A broadcast message forwarded to a finger node includes an End ID parameter equal to the new End ID value determined for the finger node. Nodes can aggregate response messages from its finger nodes.
    • 广播消息被有效地指向覆盖网络的节点。 广播消息包括指定应该接收广播消息的节点的密钥值的范围的结束ID参数。 覆盖网络的每个节点维护手指节点及其各自的键值的列表。 在接收到广播消息时,节点基于广播消息的结束ID值或相邻手指节点的密钥值来分配手指节点新的结束ID值。 节点将手指节点的新结束ID值与手指节点的键值进行比较,以确定是否将广播消息转发到该手指节点。 转发到手指节点的广播消息包括等于为手指节点确定的新的结束ID值的结束ID参数。 节点可以聚合来自其手指节点的响应消息。