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
    • 57. 发明授权
    • Intermediate for biotin and process for producing the same
    • 生物素的中间体及其制备方法
    • US07335778B2
    • 2008-02-26
    • US10496660
    • 2002-12-04
    • Masahiko SekiToshiaki ShimizuShin-ichi YoshidaMasanori Hatsuda
    • Masahiko SekiToshiaki ShimizuShin-ichi YoshidaMasanori Hatsuda
    • C07D233/20C07D277/10
    • C07F3/06C07D233/34C07D495/04C07F3/02
    • The present invention is to provide a process for preparing a synthetic intermediate of biotin which is industrially advantageous, and discloses a process for preparing a compound represented by the formula (I): wherein R1 and R2 may be the same or different from each other, and each represents hydrogen atom, a benzyl group which may have a substituent(s) on the benzene ring, a benzhydryl group which may have a substituent(s) on the benzen ring, or a trityl group which may have a substituent(s) on the benzene ring, R3 represents cyano group, carboxyl group, an alkoxycarbonyl group, an alkylthiocarbonyl group, or a carbamoyl group which may have a substituent, or a salt thereof which comprises subjecting a compound represented by the formula (II-a): wherein the symbols have the same meanings as defined above, or a salt thereof to ring transformation.
    • 本发明提供一种制备在工业上有利的生物素的合成中间体的方法,并公开了制备由式(I)表示的化合物的方法:其中R 1和R 2 > 2个彼此可以相同或不同,并且各自表示氢原子,苯环上可具有取代基的苄基,可以具有取代基的二苯甲基 苯环或在苯环上可具有取代基的三苯甲基,R 3表示氰基,羧基,烷氧基羰基,烷硫基羰基或氨基甲酰基,其中 可以具有取代基或其盐,其包括使由式(II-a)表示的化合物:其中符号具有与上述相同的含义或其盐进行环转化。
    • 59. 发明申请
    • Capacitor deterioration judgment method
    • 电容劣化判断方法
    • US20060220661A1
    • 2006-10-05
    • US10564507
    • 2005-06-14
    • Toshiaki ShimizuToshihiko Oohashi
    • Toshiaki ShimizuToshihiko Oohashi
    • G01R27/26
    • G01R31/028G01R27/02H01G9/035
    • A method for determining the deterioration of a capacitor that increases the measurement accuracy to have an improved reliability is disclosed. In this method for determining the deterioration of a capacitor, the deterioration of a capacitor including a pair of electrode bodies and electrolytic solution provided between the electrode bodies is determined by applying an AC voltage to the capacitor to measure an impedance characteristic at a frequency of the AC voltage. An inflection point appearing in the impedance characteristic due to the deterioration of the electrolytic solution is previously calculated to make comparison with an impedance value in the frequency region lower than the inflection point, thereby determining the deterioration.
    • 公开了一种用于确定提高测量精度以提高可靠性的电容器劣化的方法。 在确定电容器劣化的方法中,通过向电容器施加AC电压来确定包括一对电极体和设置在电极体之间的电解液的电容器的劣化,以测量电容器的频率处的阻抗特性 交流电压。 预先计算由于电解液的劣化而出现在阻抗特性中的拐点,以便与低于拐点的频率区域中的阻抗值进行比较,从而确定劣化。