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    Method of purifying dianhydrides, the dianhydrides formed thereby, and polyetherimides formed therefrom
    3.
    发明授权
    Method of purifying dianhydrides, the dianhydrides formed thereby, and polyetherimides formed therefrom 有权
    纯化二酸酐的方法，由此形成的二酸酐和由其形成的聚醚酰亚胺

    公开(公告)号：US08013173B2

    公开(公告)日：2011-09-06

    申请号：US12058344

    申请日：2008-03-28

    申请人： Beatriz Penalver Bernabe ,  Vijay Gopalakrishnan ,  Lioba Maria Kloppenburg ,  Matt Kuhlman ,  Roy Ray Odle ,  Eric Pressman ,  Narayan Ramesh ,  Harpreet Singh

    发明人： Beatriz Penalver Bernabe ,  Vijay Gopalakrishnan ,  Lioba Maria Kloppenburg ,  Matt Kuhlman ,  Roy Ray Odle ,  Eric Pressman ,  Narayan Ramesh ,  Harpreet Singh

    IPC分类号： C07D493/00

    CPC分类号： C07D307/89 ,  C08G73/1053

    摘要： A method for purifying an oxydiphthalic anhydride comprises diluting a first mixture comprising an oxydiphthalic anhydride, a solvent, a catalyst, and an inorganic salt with a solvent, to provide a second mixture having a solids content of 10 to 30 percent based on total weight of the second mixture; filtering and washing the solids of the second mixture at a temperature below the crystallization point temperature of the oxydiphthalic anhydride to provide a third mixture; hydrolyzing the third mixture by adding water and a water-soluble acid to form a fourth mixture; heating the fourth mixture; then cooling to provide a solid-liquid mixture, optionally decanting a portion of the liquid, rediluting the remaining solid-liquid mixture, then filtering to provide a solid component; washing the solid component with water to provide a fifth mixture of oxydiphthalic tetraacid and water; ring closing the oxydiphthalic tetraacid to provide oxydiphthalic anhydride, and filtering the oxydiphthalic anhydride.

    摘要翻译： 一种氧联二邻苯二甲酸酐的纯化方法包括用溶剂将包含氧联二邻苯二甲酸酐，溶剂，催化剂和无机盐的第一混合物稀释，得到固体含量为10-30重量％ 第二混合物; 在低于氧联二邻苯二甲酸酐的结晶点温度的温度下过滤和洗涤第二混合物的固体以提供第三混合物; 通过加入水和水溶性酸来水解第三混合物以形成第四混合物; 加热第四混合物; 然后冷却以提供固液混合物，任选地倾析一部分液体，重新稀释剩余的固液混合物，然后过滤以提供固体组分; 用水洗涤固体组分以提供氧联二邻苯四酸和水的第五混合物; 闭环氧二邻苯四酸以提供氧联二邻苯二甲酸酐，并过氧化邻苯二甲酸酐。

    Method of Purifying Dianhydrides, the Dianhydrides Formed Thereby, and Polyetherimides Formed Therefrom
    4.
    发明申请
    Method of Purifying Dianhydrides, the Dianhydrides Formed Thereby, and Polyetherimides Formed Therefrom 有权
    纯化二酸酐的方法，由此形成的二酸酐和由其形成的聚醚酰亚胺

    公开(公告)号：US20090247727A1

    公开(公告)日：2009-10-01

    申请号：US12058344

    申请日：2008-03-28

    申请人： Beatriz Penalver Bernabe ,  Vijay Gopalakrishnan ,  Lioba Maria Kloppenburg ,  Matt Kuhlman ,  Roy Ray Odle ,  Eric Pressman ,  Narayan Ramesh ,  Harpreet Singh

    发明人： Beatriz Penalver Bernabe ,  Vijay Gopalakrishnan ,  Lioba Maria Kloppenburg ,  Matt Kuhlman ,  Roy Ray Odle ,  Eric Pressman ,  Narayan Ramesh ,  Harpreet Singh

    IPC分类号： C07D407/12 ,  C08G65/26

    CPC分类号： C07D307/89 ,  C08G73/1053

    摘要： A method for purifying an oxydiphthalic anhydride comprises diluting a first mixture comprising an oxydiphthalic anhydride, a solvent, a catalyst, and an inorganic salt with a solvent, to provide a second mixture having a solids content of 10 to 30 percent based on total weight of the second mixture; filtering and washing the solids of the second mixture at a temperature below the crystallization point temperature of the oxydiphthalic anhydride to provide a third mixture; hydrolyzing the third mixture by adding water and a water-soluble acid to form a fourth mixture; heating the fourth mixture; then cooling to provide a solid-liquid mixture, optionally decanting a portion of the liquid, rediluting the remaining solid-liquid mixture, then filtering to provide a solid component; washing the solid component with water to provide a fifth mixture of oxydiphthalic tetraacid and water; ring closing the oxydiphthalic tetraacid to provide oxydiphthalic anhydride, and filtering the oxydiphthalic anhydride.

    摘要翻译： 一种氧联二邻苯二甲酸酐的纯化方法包括用溶剂将包含氧联二邻苯二甲酸酐，溶剂，催化剂和无机盐的第一混合物稀释，得到固体含量为10-30重量％ 第二混合物; 在低于氧联二邻苯二甲酸酐的结晶点温度的温度下过滤和洗涤第二混合物的固体以提供第三混合物; 通过加入水和水溶性酸来水解第三混合物以形成第四混合物; 加热第四混合物; 然后冷却以提供固液混合物，任选地倾析一部分液体，重新稀释剩余的固液混合物，然后过滤以提供固体组分; 用水洗涤固体组分以提供氧联二邻苯四酸和水的第五混合物; 闭环氧二邻苯四酸以提供氧联二邻苯二甲酸酐，并过氧化邻苯二甲酸酐。

    Content placement
    6.
    发明授权
    Content placement 有权
    内容放置

    公开(公告)号：US08856846B2

    公开(公告)日：2014-10-07

    申请号：US12955672

    申请日：2010-11-29

    申请人： David L. Applegate ,  Aaron F. Archer ,  Vijay Gopalakrishnan ,  Seungjoon Lee ,  Kadangode Ramakrishnan

    发明人： David L. Applegate ,  Aaron F. Archer ,  Vijay Gopalakrishnan ,  Seungjoon Lee ,  Kadangode Ramakrishnan

    IPC分类号： H04N7/173 ,  H04N21/472 ,  H04N21/25 ,  H04N21/2225

    CPC分类号： H04N21/252 ,  H04N21/2225 ,  H04N21/47202

    摘要： A method includes receiving data identifying new media content items to be added to a media distribution system that provides media content on demand to a plurality of endpoints. The media distribution system includes a plurality of distribution nodes, and each of the distribution nodes is coupled to a subset of the endpoints. Historical demand is determined during a particular time period for existing media content items that include content available via at least one of the distribution nodes before the data was received. The method includes forecasting demand for media content items, including new media content items and existing media content items, based on the historical demand. Each media content item is assigned to, and stored at, at least one corresponding distribution node based at least partially on a cost function and the forecasted demand.

    摘要翻译： 一种方法包括接收标识要添加到向多个端点提供媒体内容的媒体分发系统的新媒体内容项目的数据。 媒体分发系统包括多个分发节点，并且每个分发节点耦合到端点的子集。 历史需求是在特定时间段内确定的，该现有媒体内容项包括在接收数据之前通过至少一个分发节点可用的内容。 该方法包括根据历史需求预测媒体内容项目的需求，包括新媒体内容项目和现有媒体内容项目。 至少部分地基于成本函数和所预测的需求将每个媒体内容项目分配给至少一个对应分配节点并存储在其中。

    System and Method for Delivery of Video-on-Demand
    8.
    发明申请
    System and Method for Delivery of Video-on-Demand 有权
    视频点播交付系统和方法

    公开(公告)号：US20100100911A1

    公开(公告)日：2010-04-22

    申请号：US12254378

    申请日：2008-10-20

    申请人： Kadangode Ramakrishnan ,  Vijay Gopalakrishnan

    发明人： Kadangode Ramakrishnan ,  Vijay Gopalakrishnan

    IPC分类号： H04N7/173

    CPC分类号： H04N21/6582 ,  H04N7/17318 ,  H04N21/2225 ,  H04N21/47202 ,  H04N21/4788 ,  H04N21/632

    摘要： A method of providing video-on-demand content includes receiving a request from a set-top box, and determining the video-on-demand content is not stored locally. The request includes a content identifier for the video-on-demand content. The method further includes identifying a peer likely to have the video-on-demand content, receiving at least a first portion of the video-on-demand content from the peer, and providing the video-on-demand content to the set-top box.

    摘要翻译： 提供视频点播内容的方法包括从机顶盒接收请求，并且确定视频点播内容不被本地存储。 请求包括用于视频点播内容的内容标识符。 该方法还包括识别可能具有视频点播内容的对等体，从对等体接收视频点播内容的至少第一部分，并将视频点播内容提供给机顶盒 框。