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    • 111. 发明授权
    • Process for preparing aromatic carbonic ester
    • 制备芳香族碳酸酯的方法
    • US5874605A
    • 1999-02-23
    • US465
    • 1998-02-03
    • Hiroshi YoshidaHideaki TsunekiAtusi MoriyaHiroki WakayamaKenichi WatanabeYoshiyuki Onda
    • Hiroshi YoshidaHideaki TsunekiAtusi MoriyaHiroki WakayamaKenichi WatanabeYoshiyuki Onda
    • B01J31/12C07B61/00C07C68/06C07C68/08C07C69/96
    • C07C68/06Y02P20/127
    • An aromatic carbonate ester is continuously and efficiently prepared by the transesterification of an aromatic carboxylate with an aliphatic carbonate ester and/or aromatic.aliphatic carbonate ester. A raw material including an aromatic carboxylate, aliphatic carbonate ester and/or aromatic.aliphatic carbonate ester, and a catalyst are continuously fed to a first stage of a reactive distillation column (1) through a raw material feeding pipe (5). Meanwhile, an aliphatic carbonate ester (a) whose boiling point is lower than that of a reactant liquid that is present in a second stage lower than the first stage is continuously fed to the second stage through an aliphatic carbonate ester (a) feeding pipe (6). The second stage is preferably a column bottom section of the reactive distillation column (1). The amount of aliphatic carbonate ester (a) fed is preferably 0.001 to 5 times, by weight, more than the amount of the raw material fed.
    • PCT No.PCT / JP97 / 02000 Sec。 371日期1998年2月3日 102(e)1998年2月3日PCT 1997年6月10日PCT公布。 WO97 / 47586 PCT公开号 日期1997年12月18日芳族羧酸酯与脂族碳酸酯和/或芳族脂族碳酸酯的酯交换连续有效地制备芳族碳酸酯酯。 包含芳族羧酸酯,脂族碳酸酯和/或芳香族脂肪族碳酸酯的催化剂和催化剂通过原料输送管(5)连续供给至反应蒸馏塔(1)的第一阶段。 同时,通过脂肪族碳酸酯(a)进料管(a)向第二阶段连续供给沸点低于第一阶段的第二阶段的反应液的沸点的脂肪族碳酸酯(a) 6)。 第二阶段优选为反应蒸馏塔(1)的塔底部分。 进料的脂肪族碳酸酯(a)的量优选为进料原料量的0.001〜5倍。
    • 114. 发明授权
    • Process for preparing carbonate esters
    • 制备碳酸酯的方法
    • US5543546A
    • 1996-08-06
    • US443753
    • 1995-05-18
    • Hideaki TsunekiYoshiyuki OndaAtusi MoriyaHiroshi Yoshida
    • Hideaki TsunekiYoshiyuki OndaAtusi MoriyaHiroshi Yoshida
    • B01D3/00B01J19/18C07C68/06
    • C07C67/03B01D3/009B01J19/1862C07C68/06B01J2219/00029B01J2219/00094Y02P20/127
    • Carboxylate (1) of the formula R.sup.1 COOR.sup.2 (where each of R.sup.1 and R.sup.2 independently represents an alkyl group, an alicyclic hydrocarbon group or an aryl alkyl group), an aromatic hydroxy compound of the formula R.sup.3 OH (where R.sup.3 represents an aromatic group with or without a substituent), and a catalyst are supplied to a batch reactor 1, and a transesterification between the carboxylate (1) and the aromatic hydroxy compound is performed to produce carboxylate (3) of the formula R.sup.1 COOR.sup.3 (where R.sup.1 and R.sup.3 are as defined above). After distilling off the by-produced alcohol and unreacted compounds using a distillation column 2, carbonate ester (4) of the formula R.sup.4 O--COOR.sup.5 (where each of R.sup.4 and R.sup.5 independently represents an alkyl group, an alicyclic hydrocarbon group or an aryl alkyl group) is supplied to the batch reactor 1. Then, a transesterification between the carboxylate (3) and the carbonate ester (4) is performed to produce carbonate ester (5) of the formula R.sup.3 O--COOR.sup.6 (where R.sup.3 is as defined above, and R.sup.6 is a substituent selected from the group consisting of R.sup.3, R.sup.4 and R.sup.5). This process enables efficient preparation of carbonate esters.
    • 式R1COOR2的羧酸酯(1)(其中R 1和R 2各自独立地表示烷基,脂环族烃基或芳基烷基),式R 3 OH的芳族羟基化合物(其中R 3表示具有或不具有 取代基),将催化剂供给到间歇式反应器1中,并进行羧酸酯(1)与芳族羟基化合物之间的酯交换反应,生成式R 1 COOR 3的羧酸酯(3)(其中R 1和R 3如上所定义) )。 使用蒸馏塔2蒸馏出副产物醇和未反应化合物后,式R4O-COOR5(其中R4和R5各自独立地表示烷基,脂环族烃基或芳基烷基)的式(4) )供给到间歇反应器1.然后,进行羧酸酯(3)和碳酸酯(4)之间的酯交换以制备式R3O-COOR6的碳酸酯(5)(其中R3如上定义,和 R6是选自R3,R4和R5的取代基)。 该方法可有效制备碳酸酯。
    • 116. 发明授权
    • Level shifting low to high supply voltage interface circuit
    • 电平转换低电平到高电压接口电路
    • US5406142A
    • 1995-04-11
    • US141544
    • 1993-10-27
    • Junichi NakamaHiroshi YoshidaTakanori Seino
    • Junichi NakamaHiroshi YoshidaTakanori Seino
    • H03K3/356H03K19/0185H03K19/0175H03K19/094
    • H03K3/356113H03K19/018521H03K3/356017
    • When the input signal IN1 changes from a ground voltage GND to a first voltage -E1 and from the first voltage -E1 to the ground voltage GND, the output potential of the -E2 system flip-flop circuit changes gradually. The inverted signal from the -E1 system inverter circuit is supplied to the -E2 system inverter circuit earlier than the output signal (high-potential signal) of the -E2 system flip-flop circuit. This eliminates a period of time when all the MOSFETs in the -E2 system inverter circuit turn on simultaneously, thereby reducing a through current in the -E2 system inverter circuit. Consequently, the circuit operation can be stabilized by decreasing through currents flowing in the -E1 system inverter circuit and the -E2 system inverter circuit using the output signal of the -E2 system flip-flop circuit as an input.
    • 当输入信号IN1从接地电压GND变为第一电压-E1,从第一电压-E1变为接地电压GND时,-E2系统触发电路的输出电位逐渐变化。 来自-E1系统逆变电路的反相信号比-E2系统触发电路的输出信号(高电位信号)提供给-E2系统的逆变器电路。 这消除了-E2系统逆变器电路中的所有MOSFET同时导通的一段时间,从而减少-E2系统逆变器电路中的通过电流。 因此,通过使用-E2系统触发器电路的输出信号作为输入,通过减少在-E1系统逆变器电路和-E2系统逆变器电路中流过的电流来稳定电路操作。
    • 118. 发明授权
    • Method for synchronizing synchronous data communication network and
communication device used in the synchronous data communication network
    • 用于同步数据通信网络同步数据通信网络中使用的通信设备的同步方法
    • US5386418A
    • 1995-01-31
    • US39374
    • 1993-05-04
    • Yasuko KomuroNoboru YajimaHiroshi Yoshida
    • Yasuko KomuroNoboru YajimaHiroshi Yoshida
    • H04J3/06H04Q11/04H04L7/04
    • H04J3/0647H04J3/0641H04Q11/0478H04J2203/0042H04J2203/006H04J2203/0089
    • A method of switching from one synchronizing signal source to another in a synchronous data communication network in which a plurality of stations are connected to each other via lines and A plurality of synchronizing signal sources are provided inside or outside the stations; the when a failure occurs a synchronizing signal source is replaced by another synchronizing signal source in correspondence to the failure so that the data communication may be continued. Specifically, flag bit data, indicating whether or not the synchronizing signal transmitted via the line is available, are set in the signal including the synchronizing signal and transmitted via the line. When a failure occurs in any of the plurality of synchronizing signal sources, a table provided in each station and specifying the order of priority for selection of a synchronizing signal source is referred to, and a synchronizing signal source is selected for each station in accordance with said flag bit data. Each station switches from the currently selected synchronizing signal source to the synchronizing signal source selected.
    • PCT No.PCT / JP92 / 01042 Sec。 371日期:1993年5月4日 102(e)日期1993年5月4日PCT提交1992年8月18日PCT公布。 公开号WO93 / 04545 日期1993年3月4日。一种在同步数据通信网络中从一个同步信号源切换到另一个同步信号源的方法,其中多个站经由线路彼此连接,并且多个同步信号源设置在内部或外部 车站 当发生故障时,同步信号源被对应于故障的另一个同步信号源代替,从而数据通信可以继续。 具体地,指示通过线路发送的同步信号是否可用的标志位数据被设置在包括同步信号并经由线路发送的信号中。 当在多个同步信号源中的任何一个发生故障时,参考每个站中提供的表并指定用于选择同步信号源的优先级顺序,并且根据每个站选择同步信号源 所述标志位数据。 每个站从当前选择的同步信号源切换到所选择的同步信号源。
    • 120. 发明授权
    • Digital temperature-compensated oscillator
    • 数字温度补偿振荡器
    • US5081431A
    • 1992-01-14
    • US644614
    • 1991-01-23
    • Kuichi KuboTsutomu YamakawaHiroshi Yoshida
    • Kuichi KuboTsutomu YamakawaHiroshi Yoshida
    • H03B1/00H03L1/02
    • H03L1/026H03B2201/0208H03L1/028
    • A digital temperature-compensated oscillator comprises a crystal oscillator, a first memory previously storing digital temperature compensation data obtained by previously measuring the relation between the ambient temperatures and the frequency deviations of the crystal oscillator, a second memory for storing frequency offset amounts of the oscillation frequency of the crystal oscillator, a temperature sensor for outputting analog detection data relating to the ambient temperature, an A/D converter for converting the analog detection data to digital detection data, a readout circuit for reading out temperature compensation data corresponding to the digital detection data and stored in the first memory according to the digital detection data and reading out the frequency offset amount stored in the second memory according to the digital detection data, an operation circuit for effecting the following calculation by use of the readout temperature compensation data and readout frequency offset amount to derive digital control voltage,V.sub.c =V.sub.co +(K.sub.00 +V.sub.co K.sub.10 +K.sub.01 T).times.(.DELTA.F+.DELTA.F.sup.2 .times.K.sub.10 /2)where K.sub.00, K.sub.01 and K.sub.10 are constants, V.sub.co is an initial value of the control voltage, T is an ambient temperature and .DELTA.F is a frequency offset amount, a D/A converter for converting the digital control voltage into an analog control voltage, and a voltage-capacitance converter for receiving the analog control voltage and generating a control signal to be supplied to the crystal oscillator according to the received analog control voltage, wherein the frequency of the crystal oscillator is controlled according to the control signal.
    • 数字温度补偿振荡器包括晶体振荡器,预先存储通过预先测量环境温度与晶体振荡器的频率偏差之间的关系而获得的数字温度补偿数据的第一存储器,用于存储振荡的频率偏移量的第二存储器 晶体振荡器的频率,用于输出与环境温度有关的模拟检测数据的温度传感器,用于将模拟检测数据转换为数字检测数据的A / D转换器,读出与数字检测对应的温度补偿数据的读出电路 数据,并根据数字检测数据存储在第一存储器中,并根据数字检测数据读出存储在第二存储器中的频率偏移量;操作电路,用于通过使用读出的温度补偿数据和读出来进行以下计算 频率 偏移量导出数字控制电压,Vc = Vco +(K00 + VcoK10 + K01T)x(DELTA F + DELTA F2xK10 / 2)其中K00,K01和K10为常数,Vco为控制电压的初始值,T为环境 温度和DELTA F是频率偏移量,用于将数字控制电压转换为模拟控制电压的D / A转换器,以及用于接收模拟控制电压并产生要提供给晶体的控制信号的电压 - 电容转换器 振荡器根据接收的模拟控制电压,其中根据控制信号控制晶体振荡器的频率。