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    • 1. 发明授权
    • Process of forming a pyrrole compound
    • 形成吡咯化合物的方法
    • US08273901B2
    • 2012-09-25
    • US12782708
    • 2010-05-18
    • Guofu ZhongBin TanZugui ShiPei Juan Chua
    • Guofu ZhongBin TanZugui ShiPei Juan Chua
    • C07D207/30
    • C07D207/46
    • Disclosed is a process of forming a pyrrole compound. The process comprises contacting an α-carbonyl oxime compound 1 and an α,β-unsaturated aldehyde 2 R1 and R2 in compound 1 are independently selected from the group consisting of H, a silyl-group, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group, and an arylalicyclic group. The aliphatic, alicyclic, aromatic, arylaliphatic, and arylalicyclic groups comprise 0 to about 3 heteroatoms selected from the group N, O, S, Se and Si. R3 in aldehyde 2 is selected from the group consisting of H, a silyl-group, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group, and an arylalicyclic group. The aliphatic, alicyclic, aromatic, arylaliphatic, and arylalicyclic groups comprise 0 to about 3 heteroatoms selected from the group N, O, S, Se and Si. The α-carbonyl oxime compound 1 an the α,β-unsaturated aldehyde 2 are contacted in a suitable solvent in the presence of a secondary amine. The compounds are contacted for a sufficient period of time to allow the formation of an N-hydroxypyrrole compound 3
    • 公开了形成吡咯化合物的方法。 该方法包括使α-羰基肟化合物1和化合物1中的α,bgr-不饱和醛2 R1和R2独立地选自H,甲硅烷基,脂族基,脂环基, 芳基,芳基脂族基和芳基脂环基。 脂族,脂环族,芳族,芳基脂族和芳基脂环基包含0至约3个选自N,O,S,Se和Si的杂原子。 醛2中的R 3选自H,甲硅烷基,脂族基,脂环族基,芳族基,芳基脂族基和芳基脂环基。 脂族,脂环族,芳族,芳基脂族和芳基脂环基包含0至约3个选自N,O,S,Se和Si的杂原子。 α-羰基肟化合物1和α,bgr-不饱和醛2在适当的溶剂中,在仲胺的存在下接触。 使化合物接触足够的时间以允许形成N-羟基吡咯化合物3
    • 5. 发明授权
    • Encryption key destruction for secure data erasure
    • 加密密钥破坏安全数据擦除
    • US08938624B2
    • 2015-01-20
    • US13234134
    • 2011-09-15
    • Dmitry ObukhovBin Tan
    • Dmitry ObukhovBin Tan
    • H04L9/00H04K1/00G06F21/62
    • H04L9/0891G06F21/6209G06F21/78G06F21/79G06F2221/2143
    • Techniques for encryption key destruction for secure data erasure via an external interface or physical key removal are described. Electrical destruction of key material retained in a memory of a storage device renders the device securely erased, even when the device is otherwise inoperable. The memory (e.g. non-volatile, such as flash) stores key material for encrypting/decrypting storage data for the device. An eraser provides power and commands to the memory, even when all or any portion of the device is inoperable. The commands (e.g. erase or write) enable zeroizing or destroying the key material, rendering data encrypted with the destroyed key material inaccessible, and therefore securely erased. Alternatively, the memory is a removable component (e.g. an external security device or smartcard) coupled to the device during storage operation. Removing and physically destroying the memory renders the device securely erased. The device and/or the memory are sealed to enable tamper detection.
    • 描述了通过外部接口或物理密钥删除进行安全数据擦除的加密密钥破坏技术。 保留在存储设备的存储器中的密钥材料的电破坏使得设备被安全地擦除,即使该设备在其它方面是不可操作的。 存储器(例如非易失性,例如闪存)存储用于加密/解密设备的存储数据的密钥材料。 橡皮擦为内存提供电源和命令,即使设备的全部或任何部分都不可操作。 命令(例如擦除或写入)使得能够使密钥材料归零或破坏,使用被破坏的密钥材料加密的数据不可访问,因此被安全地擦除。 或者,存储器是在存储操作期间耦合到该设备的可移动组件(例如外部安全设备或智能卡)。 删除和物理破坏内存会使设备安全地擦除。 设备和/或存储器被密封以便进行篡改检测。
    • 9. 发明授权
    • Processes of enantioselectively forming an aminoxy compound and an 1,2-oxazine compound
    • 对映选择性形成氨氧基化合物和1,2-恶嗪化合物的方法
    • US08680335B2
    • 2014-03-25
    • US12782709
    • 2010-05-18
    • Guofu ZhongMin LuDi ZhuPei Juan ChuaBin Tan
    • Guofu ZhongMin LuDi ZhuPei Juan ChuaBin Tan
    • C07C209/38C07D265/02
    • C07D265/02C07C239/20
    • Disclosed is a process of enantioselectively forming an aminoxy compound of Formula (3) In formula (3) R1 is one of an aliphatic group and an alicyclic group. R2 is one of hydrogen, an aliphatic group, an alicyclic group, an aromatic group, an arylaliphatic group and an arylalicyclic group. R3 is one of hydrogen, halogen, hydroxyl, and an aliphatic group with a main chain having 1 to about 10 carbon atoms. The respective aliphatic, alicyclic, aromatic, arylaliphatic or arylalicyclic groups of R1, R2, and R3 comprise 0 to about 3 heteroatoms independently selected from the group consisting of N, O, S, Se and Si. The process includes contacting a carbonyl compound of Formula (1) and a nitroso compound of Formula (2) in the presence of a chiral catalyst. The chiral catalyst is a compound of Formula (IX)
    • 公开了对映选择性地形成式(3)的氨氧基化合物的方法。在式(3)中,R 1是脂族基和脂环基之一。 R2是氢,脂肪族基团,脂环族基团,芳香族基团,芳基脂族基团和芳基脂环族基团中的一种。 R 3是氢,卤素,羟基和具有1至约10个碳原子的主链的脂族基团之一。 R 1,R 2和R 3各自的脂族,脂环族,芳族,芳基脂族或芳基脂环基包含0至约3个独立地选自N,O,S,Se和Si的杂原子。 该方法包括在手性催化剂的存在下使式(1)的羰基化合物与式(2)的亚硝基化合物接触。 手性催化剂是式(IX)的化合物,
    • 10. 发明授权
    • Real time implicit user modeling for personalized search
    • 用于个性化搜索的实时隐式用户建模
    • US08442973B2
    • 2013-05-14
    • US11743076
    • 2007-05-01
    • Mark CramerChengXiang ZhaiXuehua ShenBin Tan
    • Mark CramerChengXiang ZhaiXuehua ShenBin Tan
    • G06F7/00G06F17/00
    • G06F17/30554G06F17/30867
    • A method and apparatus for utilizing user behavior to immediately modify sets of search results so that the most relevant documents are moved to the top. In one embodiment of the invention, behavior data, which can come from virtually any activity, is used to infer the user's intent. The updated inferred implicit user model is then exploited immediately by re-ranking the set of matched documents to best reflect the information need of the user. The system updates the user model and immediately re-ranks documents at every opportunity in order to constantly provide the most optimal results. In another embodiment, the system determines, based on the similarity of results sets, if the current query belongs in the same information session as one or more previous queries. If so, the current query is expanded with additional keywords in order to improve the targeting of the results.
    • 一种用于利用用户行为立即修改搜索结果集的方法和装置,使得最相关的文档被移动到顶部。 在本发明的一个实施例中,可以使用几乎任何活动的行为数据来推断用户的意图。 然后通过重新排列匹配文档的集合来立即利用更新的推断的隐式用户模型,以最好地反映用户的信息需求。 系统更新用户模型,并在每个机会立即重新排列文档,以不断提供最佳结果。 在另一个实施例中,系统基于结果集的相似性来确定当前查询是否属于与一个或多个先前查询相同的信息会话。 如果是,则使用其他关键字扩展当前查询,以改进结果的定位。