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    • 8. 发明授权
    • Process for producing spherical inorganic particle
    • 球形无机粒子的制造方法
    • US08117867B2
    • 2012-02-21
    • US11990485
    • 2006-08-09
    • Shigeo YamaguchiTakeo Inoue
    • Shigeo YamaguchiTakeo Inoue
    • C03B19/10C03B9/00C03B37/00
    • C03B19/102C01P2004/03C01P2004/32C09C1/28C09C3/006C09C3/041C09C3/043C09C3/12
    • A process for producing spherical inorganic particles which have high flowability, can be incorporated in a high proportion, and are useful as a filler for composite substrates such as printed wiring boards and encapsulating materials. Also provided is a process for producing spherical inorganic particles which have high flowability and can be incorporated in a high proportion and which are useful as a filler for encapsulating materials and give an encapsulating material having high electrical insulating properties. One of the processes for producing spherical inorganic particles comprises: (a1) pulverizing a silicate-containing inorganic material to form a pulverization product; (b1) heating the pulverization product in an atomized state to form the pulverization product into spherical particles; (c1) spraying water over the spherical particles to cool them while maintaining the atomized state of the spherical particles; and (d1) collecting the spherical particles. The other process, which is for producing spherical glass particles, comprises: a pulverization step in which a silicate-containing vitreous material is pulverized to form a pulverization product; an acid treatment step in which the pulverization product is contacted with an acid; and a sphering step in which the pulverization product is heated in a suspended state and formed into spherical particles.
    • 具有高流动性的球形无机颗粒的制造方法可以高比例地掺入,可用作印刷线路板和封装材料等复合基板的填料。 还提供了一种生产具有高流动性并且可以高比例地掺入的球形无机颗粒的方法,它可用作密封材料的填料,并得到具有高电绝缘性的封装材料。 生产球形无机颗粒的方法之一包括:(a1)粉碎含硅酸盐的无机材料以形成粉碎产物; (b1)以雾化状态加热粉碎物,形成粉碎物为球状粒子; (c1)在保持球状颗粒的雾化状态的同时将水喷洒在球形颗粒上以冷却它们; 和(d1)收集球形颗粒。 用于制造球形玻璃颗粒的另一方法包括:粉碎步骤,其中将含硅酸盐的玻璃质材料粉碎以形成粉碎产物; 酸处理步骤,其中所述粉碎产物与酸接触; 和粉碎产物在悬浮状态下加热并形成球形颗粒的纺丝步骤。
    • 9. 发明申请
    • Echo Prevention Circuit, Filter Coefficient Setting Method, and Recording Medium with Program Recorded
    • US20070205932A1
    • 2007-09-06
    • US11681643
    • 2007-03-02
    • Takeo InoueHideki OhashiYoshitaka Onaya
    • Takeo InoueHideki OhashiYoshitaka Onaya
    • H03M1/66
    • H04M9/082
    • An echo prevention circuit comprises a filter that is inputted with a first digital signal, the filter outputting second and third digital signals; a first DA converter that converts the second digital signal into a first analog signal and outputs the first analog signal; a second DA converter that converts the third digital signal into a second analog signal and outputs the second analog signal; an input/output terminal that outputs the first analog signal or that is inputted with a third analog signal; a subtracting circuit that outputs a fourth analog signal acquired by subtracting the second analog signal from a signal generated by combining the first analog signal and the third analog signal; an amplification circuit that amplifies the signal output from the subtracting circuit and outputs the amplified signal; an AD converter that converts the signal output from the amplification circuit into a digital signal and outputs the digital signal; a response signal acquiring unit that inputs a first signal to the first DA converter to acquire a first response signal from the input of the first DA converter to the output of the AD converter, the response signal acquiring unit inputting a second signal to the second DA converter to acquire a second response signal from the input of the second DA converter to the output of the AD converter; and a filter coefficient setting unit that sets filter coefficients to the filter based on the first and second response signals such that the fourth analog signal becomes a signal generated by removing or attenuating the first analog signal from the signal generated by combining the first analog signal and the third analog signal, the amplification circuit setting a gain to a first gain in response to a first control signal input before acquiring the first and second response signals, the amplification circuit setting the gain to a second gain larger than the first gain in response to a second control signal input after acquiring the first and second response signals.