会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 41. 发明授权
    • Omerazole process and compositions thereof
    • 奥美拉唑法及其组合物
    • US06191148B1
    • 2001-02-20
    • US09461605
    • 1999-12-15
    • James W. McManusNick AnousisBenjamin Newton BanksHui LiuLingwen Zhou
    • James W. McManusNick AnousisBenjamin Newton BanksHui LiuLingwen Zhou
    • A61K314439
    • C07D401/12
    • The present invention describes an improved process for the preparation, isolation, and purification of the anti-ulcer agent omeprazole whereby the sulfide precursor pyrmetazole is reacted subsurfacely with exactly one molar equivalent of meta-chloroperoxybenzoic acid in a chlorinated aliphatic hydrocarbon or aromatic hydrocarbon solvent, such as methylene chloride or toluene; residual organic solvent is removed from the aqueous layer by vacuum distillation; crude product is obtained by reactive crystallization with an alkyl formate or formic acid solution and seeding; and pure product is isolated by recrystallization in methanol-water containing aqueous NaOH by subsurface addition of aqueous acetic acid to pH 9.0, seeding, filtration, washing, and drying. Omeprazole and compositions of omeprazole containing no chromatographically detectable levels of residual non-alcoholic organic reaction solvent and diminished levels of alcoholic solvent are also described.
    • 本发明描述了一种用于制备,分离和纯化抗溃疡剂奥美拉唑的改进方法,其中硫化物前体pyrmetazole在氯代脂族烃或芳族烃溶剂中与恰好一摩尔当量的间氯过氧苯甲酸在地下反应, 如二氯甲烷或甲苯; 通过真空蒸馏从水层除去残留的有机溶剂; 粗产物通过与甲酸烷基酯或甲酸溶液反应结晶并接种获得; 通过在甲醇 - 含水NaOH水溶液中再次析出纯产物,通过地下加入乙酸水溶液至pH 9.0,接种,过滤,洗涤和干燥。 还描述了奥美拉唑和不含色谱可检测水平的残留的非酒精有机反应溶剂和降低的醇溶剂水平的奥美拉唑组合物。
    • 42. 发明授权
    • Method and apparatus for fast modulation in synchronous CDMA
communications
    • 同步CDMA通信中快速调制的方法和装置
    • US5864548A
    • 1999-01-26
    • US779263
    • 1997-01-06
    • Hui Liu
    • Hui Liu
    • H04B1/707H04B7/216
    • H04B1/707
    • A system and method for modulating synchronous CDMA (S-CDMA) signals in antenna array wireless system. By taking advantage of the symmetric property of Walsh code words utilized in S-CDMA perform modulation of signals intended for a plurality of users. The system includes a Fast Hadamard Transform (FHT) Processor that realizes baseband operations including spreading and digital combining in one step. In addition to significant reduction in computations and storage over prior methods, the invention also provides substantial advantages in hardware implementation. While the exemplary embodiment is described in the context of antenna array CDMA systems, the disclosed techniques have general applications in CDMA systems with arbitrary symbol values.
    • 一种在天线阵列无线系统中调制同步CDMA(S-CDMA)信号的系统和方法。 通过利用在S-CDMA中使用的沃尔什码字的对称性来执行针对多个用户的信号的调制。 该系统包括一个快速Hadamard变换(FHT)处理器,实现基带操作,包括一步一步的扩展和数字组合。 除了相对于现有方法的计算和存储的显着减少之外,本发明还在硬件实现方面提供了显着的优点。 虽然在天线阵列CDMA系统的上下文中描述了示例性实施例,但是所公开的技术在具有任意符号值的CDMA系统中具有一般应用。
    • 47. 发明授权
    • Efficient broadcasting via random linear packet combining
    • 通过随机线性分组组合进行有效的广播
    • US08953612B2
    • 2015-02-10
    • US13414235
    • 2012-03-07
    • Hui LiuMohammad H. FiroozSumit Roy
    • Hui LiuMohammad H. FiroozSumit Roy
    • H04L12/28H04L1/00H04H20/42
    • H04L1/0076H04H20/42H04L1/0057H04L69/22H04W4/06
    • Embodiments of systems and methods for efficient broadcasting via random linear packet combining are described. A plurality of data packets are received from a data source according to embodiments. The plurality of data packets is divided into a plurality of data blocks, and bits associated with the plurality of data blocks are multiplied by a set of coefficients to generate a plurality of product values. An encoded data packet having a plurality of encoded data blocks may also be generated by linearly combining the plurality of product values for respective data blocks of each of the plurality of data packets into corresponding encoded data blocks of the encoded data packet. Because each encoded data packet includes information about a complete set of data packets, rather than just a subset, less broadcast redundancy may be required.
    • 描述了通过随机线性分组组合进行有效广播的系统和方法的实施例。 根据实施例,从数据源接收多个数据分组。 多个数据分组被分成多个数据块,并且与多个数据块相关联的比特乘以一系列系数以产生多个乘积值。 也可以通过将多个数据分组中的每一个的各个数据块的多个乘积值线性地组合成编码数据分组的相应的编码数据块来生成具有多个编码数据块的编码数据分组。 因为每个编码的数据分组包括关于完整的一组数据分组的信息,而不仅仅是一个子集,所以可能需要较少的广播冗余。