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95 条记录 (耗时 0.034 秒)

    Cap for vessel for performing multi-stage process
    71.
    发明授权
    Cap for vessel for performing multi-stage process 有权
    用于执行多级过程的容器盖

    公开(公告)号：US08205764B2

    公开(公告)日：2012-06-26

    申请号：US12575872

    申请日：2009-10-08

    申请人： Ronald Chang

    发明人： Ronald Chang

    IPC分类号： B65D43/18 ,  B65D55/16 ,  B67D3/00

    CPC分类号： B01L3/50825 ,  B01L2200/141 ,  B01L2300/043 ,  B01L2300/047 ,  B01L2300/0672 ,  B01L2400/0683

    摘要： Embodiments of the invention provide a cap for a vessel for performing a multi-stage process for analyzing a sample, such as nested PCR or RT-PCR. In one embodiment, the cap comprises a body configured to be mated to the vessel to enclose a vessel interior, a cap cavity for holding reagents, and a cap cavity control portion that is adjustable with respect to the body between a first-stage position in which the cap cavity is enclosed and fluidicly isolated from the vessel interior and a second-stage position in which the cap cavity is fluidicly coupled with the vessel interior.

    摘要翻译： 本发明的实施方案提供了用于进行用于分析样品的多级方法（例如巢式PCR或RT-PCR）的容器的盖。 在一个实施例中，盖包括构造成与容器配合以封闭容器内部的主体，用于保持试剂的盖腔，以及帽腔控制部分，其在相对于主体的第一阶段位置之间相对于主体可调节 盖腔被封闭并与容器内部流体隔离，第二级位置中帽腔与容器内部流体连接。

    Ultra wideband and fast hopping frequency synthesizer for MB-OFDM wireless application
    73.
    发明授权
    Ultra wideband and fast hopping frequency synthesizer for MB-OFDM wireless application 有权
    用于MB-OFDM无线应用的超宽带和快速跳频合成器

    公开(公告)号：US07589597B2

    公开(公告)日：2009-09-15

    申请号：US11868200

    申请日：2007-10-05

    申请人： Ronald Chang ,  Sheng Yen ,  Wei Gao

    发明人： Ronald Chang ,  Sheng Yen ,  Wei Gao

    IPC分类号： H03B21/01 ,  H03B21/02 ,  H03L7/16 ,  H04B1/26

    CPC分类号： H03L7/16 ,  H03B21/02 ,  H04B1/7136

    摘要： A frequency synthesizer with a single PLL and multiple SSB mixers is presented. The frequency synthesizer includes a single PLL outputting a reference signal that is fed to a plurality of dividers coupled in sequence. The outputs from the dividers are mixed by the SSB mixers to produce signals with different frequencies. These signals with different frequencies can be selected through use of multiple selectors.

    摘要翻译： 提出了具有单个PLL和多个SSB混频器的频率合成器。 频率合成器包括单个PLL，其输出被馈送到依次耦合的多个分频器的参考信号。 分频器的输出由SSB混频器混合，产生不同频率的信号。 可以通过使用多个选择器来选择具有不同频率的这些信号。

    Method and apparatus for storing and dispensing reagent beads
    74.
    发明申请
    Method and apparatus for storing and dispensing reagent beads 有权

    公开(公告)号：US20060275178A1

    公开(公告)日：2006-12-07

    申请号：US11146304

    申请日：2005-06-06

    申请人： Ronald Chang ,  Douglas Dority ,  Steven Montgomery

    发明人： Ronald Chang ,  Douglas Dority ,  Steven Montgomery

    IPC分类号： B01L9/00

    CPC分类号： B01L3/527 ,  B01J19/0046 ,  B01J2219/00468 ,  B01J2219/005 ,  B01J2219/00657 ,  B01L3/0289 ,  B01L2200/0647 ,  B01L2200/16 ,  G01N2035/00574 ,  Y10T436/25

    摘要： Embodiments of the invention provide an efficient and effective technique for storing and dispensing reagent beads. In one embodiment, an apparatus is provided for dispensing reagent beads contained in a bead storage device which includes a bead carrier having a plurality of wells; a plurality of reagent beads disposed in the wells; and a cover tape releasably attached to the bead carrier to cover the wells and retain the reagent beads in the wells. The apparatus comprises a channel in which to place the bead storage device with the bead carrier facing a support wall of the channel and the cover tape facing a stripping wall of the channel. The stripping wall includes a stripping gap disposed between a stripping edge and an opposite edge, and a dispense opening provided adjacent the opposite edge on a side of the stripping wall opposite from the stripping edge. The cover tape is insertable through the stripping gap to be pulled against the stripping edge to peel the cover tape from the bead carrier to move the wells of the bead carrier inside the channel toward the dispense opening and expose the wells individually to dispense the reagent beads.

    Valve and valved container for use with a syringe fitting
    76.
    发明授权
    Valve and valved container for use with a syringe fitting 失效
    用于注射器配件的阀门和阀门容器

    公开(公告)号：US5569235A

    公开(公告)日：1996-10-29

    申请号：US263790

    申请日：1994-06-21

    申请人： James B. Ross ,  Ronald Chang

    发明人： James B. Ross ,  Ronald Chang

    IPC分类号： A61M39/26 ,  A61M5/00 ,  A61M19/00 ,  F16K51/00

    CPC分类号： A61M39/26

    摘要： A valve for a needleless syringe fitting is disclosed. The valve has a receptacle fitting for releasable attachment to the syringe fitting, a valve chamber, a valve seat adjacent the chamber, and elastomeric sealing bowl within the chamber. The bowl is deformed and partially inverted when the syringe fitting is attached to the receptacle fitting, causing the valve to open. Also disclosed is a valved container in which a vial is sealed by a valve of this type.

    摘要翻译： 公开了一种无针注射器配件的阀。 阀具有用于可释放地附接到注射器配件，阀室，邻近腔室的阀座和腔室内的弹性体密封碗的插座配件。 当注射器配件连接到插座配件时，碗变形并部分倒置，导致阀打开。 还公开了一种带阀的容器，其中小瓶由这种类型的阀密封。

    Track and hold circuit with an input transistor held on during hold mode
    77.
    发明授权
    Track and hold circuit with an input transistor held on during hold mode 失效
    在保持模式期间，保持输入晶体管的保持电路

    公开(公告)号：US5457418A

    公开(公告)日：1995-10-10

    申请号：US349240

    申请日：1994-12-05

    申请人： Ronald Chang

    发明人： Ronald Chang

    IPC分类号： G11C27/02 ,  H03K17/0416 ,  H03K17/04 ,  H03K5/00

    CPC分类号： H03K17/04166 ,  G11C27/026

    摘要： A track and hold circuit is disclosed which may be used in high speed analog to digital conversions. The circuit includes a control transistor which keeps the circuit's input transistor in a conductive state even when the circuit is in hold mode. As a result, the track and hold circuit achieves a high switching speed while minimizing input voltage spikes.

    摘要翻译： 公开了可用于高速模数转换的轨道和保持电路。 该电路包括控制晶体管，即使当电路处于保持模式时，该控制晶体管仍将电路的输入晶体管保持在导通状态。 结果，跟踪和保持电路实现了高切换速度，同时最小化了输入电压尖峰。

    Differential amplifier
    79.
    发明授权
    Differential amplifier 有权
    差分放大器

    公开(公告)号：US08604877B2

    公开(公告)日：2013-12-10

    申请号：US13331558

    申请日：2011-12-20

    申请人： Charles Chang ,  Ronald Chang

    发明人： Charles Chang ,  Ronald Chang

    IPC分类号： H03F3/45

    CPC分类号： H03F3/45197 ,  H03F3/45475 ,  H03F3/45946 ,  H03F2203/45082 ,  H03F2203/45352 ,  H03F2203/45702

    摘要： A differential amplifier is provided in the present invention. The differential amplifier includes an amplifying module having a resistive ratio, receiving an input voltage, and amplifying the input voltage as an output voltage in accordance with the resistive ratio; and a feedback module coupled with the amplifying module and generating a feedback signal in accordance with the input voltage and the output voltage for regulating the output voltage.

    摘要翻译： 在本发明中提供了一种差分放大器。 差分放大器包括具有电阻比的放大模块，接收输入电压，并根据电阻比将输入电压放大为输出电压; 以及与放大模块耦合的反馈模块，并根据输入电压和输出电压产生反馈信号以调节输出电压。

    DRIVING CIRCUIT FOR LED
    80.
    发明申请
    DRIVING CIRCUIT FOR LED 审中-公开
    LED驱动电路

    公开(公告)号：US20120217890A1

    公开(公告)日：2012-08-30

    申请号：US13370474

    申请日：2012-02-10

    申请人： Charles Chang ,  Ronald Chang

    发明人： Charles Chang ,  Ronald Chang

    IPC分类号： H05B37/02

    CPC分类号： H05B33/0815

    摘要： A driving circuit for driving a load is provided. The driving circuit includes a control module providing a control signal to adjust a load current flowing through the load; and a voltage clamping module providing a power voltage to the control module.

    摘要翻译： 提供用于驱动负载的驱动电路。 驱动电路包括控制模块，其提供控制信号以调节流过负载的负载电流; 以及向控制模块提供电源电压的电压钳位模块。