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
    • 5. 发明授权
    • Non-volatile semiconductor memory device with verify mode for verifying
data written to memory cells
    • 具有用于验证写入存储单元的数据的验证模式的非易失性半导体存储器件
    • US5557568A
    • 1996-09-17
    • US427265
    • 1995-04-24
    • Junichi MiyamotoYasuo ItohYoshihisa Iwata
    • Junichi MiyamotoYasuo ItohYoshihisa Iwata
    • G11C17/00G11C7/02G11C7/10G11C16/02G11C16/06G11C16/10G11C16/34H01L21/8247H01L27/115G11C7/00
    • G11C16/3459G11C16/10G11C16/3454G11C7/02G11C7/1006G11C7/1048
    • A non-volatile semiconductor memory device includes a flip-flop circuit for holding write data in one of first and second states. A bit line is connected to the flip-flop circuit via a switching element, and a transistor charges the bit line. A non-volatile memory cell, connected to the bit line and having a MOS transistor structure, stores data when a threshold thereof is set in one of first and second threshold ranges, wherein at the time of a write mode the threshold of the memory cell is shifted from the first threshold range towards the second threshold range while the flip-flop circuit remains in the first state and the shift of the threshold is not effected while the flip-flop circuit remains in the second state, and at the time of a verify mode following the write mode the bit line is kept at a charge potential by the charging transistor while the threshold remains in the second threshold range. A data setting circuit for connects one of first and second signal nodes of the flip-flop circuit to a predetermined potential when the bit line is at the charge potential in the verify mode, thereby setting the flip-flop circuit in the second state irrespective of the state prior to the verify mode.
    • 非挥发性半导体存储器件包括用于保持第一和第二状态之一的写入数据的触发器电路。 位线通过开关元件连接到触发器电路,晶体管对位线进行充电。 连接到位线并具有MOS晶体管结构的非易失性存储单元将其阈值设置在第一和第二阈值范围中的一个时存储数据,其中在写入模式时,存储单元的阈值 在触发器电路保持在第一状态的同时触发器电路保持在第二状态,并且当触发器电路保持在第二状态时阈值的偏移不被影响时,从第一阈值范围向第二阈值范围移位, 在写模式之后,当阈值保持在第二阈值范围内时,位线被充电晶体管保持在电荷电位。 一种数据设定电路,用于在触发电路的第一和第二信号节点之一连接到预定电位,当位线在验证模式下处于充电电位时,从而将触发器电路设置在第二状态,而与 在验证模式之前的状态。
    • 9. 发明授权
    • Pyrazine-2-carboxamide derivatives useful in treating allergic disease
    • 吡嗪-2-甲酰胺衍生物,用于治疗过敏性疾病
    • US4792547A
    • 1988-12-20
    • US941918
    • 1986-12-15
    • Yasuo ItohHideo KatoEiichi KoshinakaNobuo OgawaKazuya Mitani
    • Yasuo ItohHideo KatoEiichi KoshinakaNobuo OgawaKazuya Mitani
    • C07D401/14C07D403/12C07D403/14A61K31/55A61K31/495
    • C07D401/14C07D403/12C07D403/14
    • Novel pyrazine derivatives useful for treatment of bronchial asthma, allergic gastorenteric trouble, hay fever urticaria, allertic rhinitis, and allergic conjunctivitis, and pharmaceutical compositions thereof, are disclosed. The compounds have the formula I as follows: ##STR1## wherein R represents hydrogen or ##STR2## wherein R.sub.1 and R.sub.2 may be the same or different and each independently represents hydrogen, straight or branched-chain lower-alkyl, or cycloalkyl having three to six carbon atoms inclusive, phenyl which may be substituted with halogen, lower-alkyl, or lower-alkoxy, or wherein R.sub.1 and R.sub.2 together represent alkylene of four to six carbon atoms, inclusive, optionally interrupted by one or two nitrogen atoms or one oxygen atom and said ring being optionally substituted by straight or branched-chain lower-alkyl having one to six carbon atoms inclusive, hydroxy, or phenyl,and pharmaceutically-acceptable salts thereof.
    • 用于治疗支气管哮喘,过敏性胃炎,花粉荨麻疹,过敏性鼻炎和过敏性结膜炎的新颖吡嗪衍生物及其药物组合物。 化合物具有如下式I:其中R表示氢或者其中R 1和R 2可以相同或不同,并且各自独立地表示氢,直链或支链低级烷基或具有三个至 6个碳原子,可被卤素,低级烷基或低级烷氧基取代的苯基,或其中R 1和R 2一起代表四至六个碳原子的亚烷基,包括任选地被一个或两个氮原子或一个氧 所述环任选被具有1-6个碳原子的直链或支链低级烷基,羟基或苯基取代,及其药学上可接受的盐。