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    • 1. 发明授权
    • Pattern matching using deterministic finite automata and organization of such automata
    • 使用确定性有限自动机的模式匹配和这种自动机的组织
    • US07672941B2
    • 2010-03-02
    • US11064257
    • 2005-02-22
    • Peter FurlongEoghan StackDavid John LawHana Hailichova
    • Peter FurlongEoghan StackDavid John LawHana Hailichova
    • G06F17/30
    • G06Q10/06
    • A deterministic finite state machine is operated to detect any one of a plurality of digital signatures each corresponding to a succession of characters and each defined by a sequence of states in the state machine. The machine is organized such that for each state after the first in any sequence there are not more than two allowed exit transitions of which one is to a default state. Input characters are examined to determine a transition from a current state of the machine to a next state. When the machine responds to an input character to perform a transition to the default state, the input character is re-examined to determine the next state of the state machine. The reduction in transitions saves considerable space in memory.
    • 操作确定性有限状态机来检测多个数字签名中的每一个对应于一系列字符的数字签名,并且每个都由状态机中的状态序列定义。 机器被组织使得对于在任何顺序中的第一个之后的每个状态,不超过两个允许的退出转换,其中一个到默认状态。 检查输入字符以确定从机器的当前状态到下一状态的转换。 当机器响应输入字符以执行到默认状态的转换时,重新检查输入字符以确定状态机的下一状态。 转换的减少节省了大量的内存空间。
    • 2. 发明授权
    • Deciphering of fragmented enciphered data packets
    • 对加密数据包进行分段解密
    • US07818564B2
    • 2010-10-19
    • US11121231
    • 2005-05-03
    • Kevin LoughranEoghan StackPeter FurlongDavid John Law
    • Kevin LoughranEoghan StackPeter FurlongDavid John Law
    • H04L29/06
    • H04L63/0485H04L63/164
    • The deciphering of fragmented enciphered IP packets is performed without requiring reassembly of the fragments. fragmented packets. When a first frame is deciphered a characteristic poly-tuple is saved against the state of the cipher, particularly an output vector. When the next frame comes in, the cipher would continue on from that previously saved state after a look-up of the poly-tuple. Each frame would then be sent on, deciphered, but still representing a fragment of the original packet. The poly-tuple employed for the look-up includes the identity and protocol fields from the IP header and at least one of the source IP address and the destination IP address. The deciphering process may commence with the combination of input data with an initializing vector and proceed by combining input data with a vector fed back from the output of the deciphering engine. The saved cipher state is employed as the initializing vector for the next frame.
    • 在不需要重新组装片段的情况下执行分段加密的IP分组的解密。 碎片包 当第一帧被解密时,针对密码的状态,特别是输出向量,保存特征多元组。 当下一帧进入时,在多元组的查找之后,密码将从先前保存的状态继续。 然后,每个帧将被发送,解密,但仍然表示原始分组的片段。 用于查找的多元组包括来自IP头部的标识和协议字段以及源IP地址和目的地IP地址中的至少一个。 解密过程可以以输入数据与初始化矢量的组合开始,并且通过将输入数据与从解密引擎的输出反馈的向量组合来进行。 采用保存的密码状态作为下一帧的初始化向量。
    • 7. 发明申请
    • PROCESS FOR PRODUCING TRIPTANE
    • 生产TRIPTANE的方法
    • US20100240938A1
    • 2010-09-23
    • US12734673
    • 2008-11-07
    • Berian John DanielDavid John LawBarry Martin MaundersJohn Glenn SunleyJan Cornelis van der Waal
    • Berian John DanielDavid John LawBarry Martin MaundersJohn Glenn SunleyJan Cornelis van der Waal
    • C07C1/00C07C1/04
    • C07C29/151C07C1/20C07C2529/08C07C2529/12C07C2529/14C07C2529/16C07C2529/18C07C2529/40C07C2529/44C07C2529/46C07C2529/48C07C2529/70C07C2529/74C07C2529/76C07C2529/78Y02P20/52C07C9/16C07C11/02C07C31/04C07C31/08C07C31/10C07C31/12
    • A process for producing triptane and/or triptene from methanol and/or one or more derivatives thereof, and optionally one or more further alcohols and/or derivatives thereof at a temperature in the range of from 150 to 400° C., in the presence of a zeolite catalyst having Brønsted acidity, in which all the carbon atoms in the triptane and/or triptene are derived from the methanol and/or one or more derivatives thereof and the optional further alcohols and/or derivatives thereof, the zeolite catalyst being selected from: i. zeolites having frameworks comprising silicon and aluminium atoms at a Si:Al mole ratio of greater than (2), which zeolites also have a channel structure comprising a ring size of (12) or more non-oxygen atoms in (2) or (3) dimensions; and ii. zeolites having frameworks comprising silicon and aluminium atoms, and which have a framework ring comprising (12) or more non-oxygen-atoms accessible on the external surface of the zeolite and a pore structure in which all of the channels have a ring-size of less than (12) non-oxygen atoms. There is also described a process for producing triptane and/or triptene wherein the zeolite catalyst is zeolite X, the reaction composition additionally comprises a C3 alcohol and/or one or more derivatives thereof, in which the mole ratio of C3 alcohol:methanol present in the reaction composition, or derivable from the one or more derivatives thereof present in the reaction composition, is greater than 0.23:10, and the temperature of the process is in the range of greater than 200° to 400° C.
    • 在150-400℃的温度下,在甲醇和/或其一种或多种衍生物和任选的一种或多种其它醇和/或其衍生物的存在下,在存在 具有布朗斯台德酸性的沸石催化剂,其中所述三庚烷和/或三丁烯中的所有碳原子来自甲醇和/或其一种或多种衍生物和任选的其它醇和/或其衍生物,选择沸石催化剂 从:我 具有Si:Al摩尔比大于(2)的硅和铝原子的骨架的沸石,该沸石还具有在(2)或(3)中具有包含(12)以上非氧原子的环尺寸的通道结构 )尺寸; 和ii。 具有包含硅和铝原子的框架的沸石,并且具有包含可在沸石的外表面上的(12)或更多个非氧原子的骨架环和其中所有通道的环尺寸为 小于(12)个非氧原子。 还描述了一种制备三庚烷和/或三丁烯的方法,其中沸石催化剂是沸石X,反应组合物另外包含C3醇和/或其一种或多种衍生物,其中存在的C3醇:甲醇的摩尔比 反应组合物或可衍生自存在于反应组合物中的一种或多种衍生物的反应组合物大于0.23:10,并且该方法的温度在大于200℃至400℃的范围内。
    • 9. 发明授权
    • Process for the production of acetic acid
    • 乙酸生产工艺
    • US07342129B2
    • 2008-03-11
    • US10516623
    • 2003-05-29
    • David John LawAndrew David PooleStephen James SmithJohn Glenn Sunley
    • David John LawAndrew David PooleStephen James SmithJohn Glenn Sunley
    • C07C51/12
    • C07C51/12C07C53/08
    • A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in a carbonylation reactor containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalyst, a finite concentration of water, acetic acid, methyl acetate, at least one promoter selected from ruthenium, osmium and rhenium and a stablising compound selected from the group consisting of alkali metal iodides, alkaline earth metal iodides, metal complexes capable of generating I−, salts capable of generating I−, and mixtures of two or more thereof wherein the molar ratio of promoter to iridium is greater than 2:1, and the molar ratio of stabilising compound to iridium is in the range [greater than 0 to 5]:1.
    • 在含有液体反应组合物的羰基化反应器中通过羰基化甲醇和/或其与一氧化碳的反应性衍生物生产乙酸的方法,所述液体反应组合物包含铱羰基化催化剂,甲基碘助催化剂,有限浓度的水,乙酸 乙酸甲酯,选自钌,锇和铼的至少一种助催化剂和选自碱金属碘化物,碱土金属碘化物,能够产生I-的金属络合物,能产生I-的盐的稳定化合物,和 其中两种或更多种的混合物,其中助催化剂与铱的摩尔比大于2:1,稳定化合物与铱的摩尔比在[大于0至5]:1范围内。