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    • 1. 发明授权
    • Cefpodixime proxetil
    • 头孢泊肟酯
    • US07045618B2
    • 2006-05-16
    • US10469330
    • 2002-02-27
    • Yatendra KumarKaptan SinghRakesh Kumar Arora
    • Yatendra KumarKaptan SinghRakesh Kumar Arora
    • C07D501/34
    • C07D501/00
    • The present invention relates to an improved and cost effective process for the industrial manufacture of cefpodoxime proxetil. More specifically, the present invention relates to the preparation of cefpodoxime proxetil of high purity and yield. The process comprises a) dissolving impure cefpodoxime proxetil or adding a solution containing cefpodoxime proxetil into a polar organic solvent or mixture(s) thereof, optionally reducing the solvent by concentration, and adding into a non-polar organic solvent or mixture(s) thereof to precipitate the solid; and b) dissolving the solid obtained from the above step into water-miscible polar organic solvent, optionally reducing the solvent by concentration, adding it into water to obtain the pure cefpodoxime proxetil.
    • 本发明涉及一种改进和成本有效的工业制造头孢泊肟酯的方法。 更具体地,本发明涉及高纯度和产率的头孢泊肟酯的制备。 该方法包括:a)将不纯的头孢泊肟原料溶解或加入含有头孢泊肟酯的极性有机溶剂或其混合物,任选地通过浓缩来还原溶剂,并加入到非极性有机溶剂或其混合物中 沉淀固体; b)将上述步骤得到的固体溶解于水溶性极性有机溶剂中,任选地通过浓缩来还原溶剂,将其加入水中,得到纯头孢泊肟原料。
    • 6. 发明申请
    • METHOD FOR PARTIAL LOADING AND VIEWING A DOCUMENT ATTACHMENT ON A PORTABLE ELECTRONIC DEVICE
    • 部分装载和查看便携式电子设备上的文件附件的方法
    • US20110153857A1
    • 2011-06-23
    • US12646645
    • 2009-12-23
    • Dan Mihai DumitruRakesh Kumar Arora
    • Dan Mihai DumitruRakesh Kumar Arora
    • G06F17/30G06F15/16
    • G06Q10/107H04L51/00
    • A method for downloading an attachment to an attachment viewer of a portable electronic device includes: sending an initial data request from said attachment viewer to a server in response to receipt of an email message including said attachment by said portable electronic device; accessing a graph structure representing a map of said attachment from said server, said graph structure having been previously built on said server; reconstructing said graph structure in response to said initial request and encapsulating said graph structure in data having an attachment viewer readable format, said data being stored on said server; and i) downloading successive chunks of said data from said server to said attachment viewer responsive to successive user requests; ii) storing each of said successive chunks of said data on said portable electronic device prior to display thereof; iii) displaying said successive chunks of said data on said portable electronic device and automatically downloading respective next chunks of said data from said server; and iv) while said data chunks of said data remain to be downloaded from said server performing steps i) to iii).
    • 用于将附件下载到便携式电子设备的附件查看器的方法包括:响应于由所述便携式电子设备接收到包括所述附件的电子邮件消息,将来自所述附件查看器的初始数据请求发送到服务器; 从所述服务器访问表示所述附件的地图的图形结构,所述图形结构已经预先构建在所述服务器上; 根据所述初始请求重建所述图形结构,并将所述图形结构封装在具有附件查看器可读格式的数据中,所述数据被存储在所述服务器上; 以及i)响应于连续的用户请求,将所述数据的所述数据从所述服务器下载到所述附件查看器; ii)在显示之前将所述数据的所述连续块存储在所述便携式电子设备上; iii)在所述便携式电子设备上显示所述数据的所述连续块,并且从所述服务器自动下载相应的下一个所述数据块; 以及iv)当所述数据的所述数据块仍然从执行步骤i)至iii)的所述服务器下载时。