Method for producing 2-azetidinone derivative
    1.
    发明授权
    Method for producing 2-azetidinone derivative 有权
    2-氮杂环丁酮衍生物的制备方法

    公开(公告)号:US07126003B2

    公开(公告)日:2006-10-24

    申请号:US10469918

    申请日:2002-03-04

    IPC分类号: C07D401/04 C07D205/04

    摘要: A process for producing a compound represented by the following formula (II) which comprises treating a compound represented by the following formula (I) (wherein R1, R2 and R3 represent each a specific substituent) with an enzyme capable of asymmetrically hydrolyzing an ester and the novel compound (II). The process of the present invention makes it possible to easily obtain an optically active 2-azetidinone derivative in a large amount at a low cost

    摘要翻译: 一种制备由下式(II)表示的化合物的方法,其包括将下式(I)表示的化合物(其中R 1,R 2,R 2和R 2) 具有能够不对称地水解酯和新化合物(II)的酶代表每个特定取代基)。 本发明的方法使得可以以低成本容易地获得大量光学活性的2-氮杂环丁酮衍生物

    Friction stir welding method
    5.
    发明授权
    Friction stir welding method 失效
    摩擦搅拌焊接方法

    公开(公告)号:US06866181B2

    公开(公告)日:2005-03-15

    申请号:US10379670

    申请日:2003-03-06

    IPC分类号: B23K20/12 H05B7/00

    CPC分类号: B23K20/1255 B23K20/122

    摘要: There is provided a method capable of decreasing a friction force in friction stir welding, in which a welding tool is used. In a method of friction stir welding workpieces together by rotating and pressingly plugging a welding tool, formed from a harder material than the workpieces, into a weld zone of the workpieces and moving the welding tool relatively in a welding direction, a power supply device allows a current to flow between the welding tool 1 and the workpieces to cause resistance heating of the welding tool. Combined use of resistance heating makes it possible to decrease a friction force. Preferably, a conductive ceramic is coated on surfaces of the welding tool to cause resistance heating.

    摘要翻译: 提供了一种能够降低摩擦搅拌焊接中使用焊接工具的摩擦力的方法。 在通过将由比工件更硬的材料形成的焊接工具旋转并将其紧密地插入到工件的焊接区域并相对于焊接方向移动焊接工具的同时将工件摩擦搅拌焊接在一起的方法中,电源装置允许 在焊接工具1和工件之间流动的电流引起焊接工具的电阻加热。 电阻加热的组合使得可以减小摩擦力。 优选地,导电陶瓷涂覆在焊接工具的表面上以引起电阻加热。

    Elastic surface wave device
    8.
    发明授权
    Elastic surface wave device 失效
    弹性表面波装置

    公开(公告)号:US4346322A

    公开(公告)日:1982-08-24

    申请号:US131538

    申请日:1980-03-18

    摘要: An elastic surface wave device comprises an input transducer and an output transducer, these transducers being provided on one surface of a piezoelectric substrate and spaced apart a predetermined distance from each other. The input transducer is provided on its side facing the output transducer with at least one separate comb electrode which is electrically insulated from the rest of the input transducer.

    摘要翻译: 弹性表面波装置包括输入换能器和输出换能器,这些换能器设置在压电基片的一个表面上并彼此隔开预定的距离。 输入传感器在其面向输出换能器的一侧设置有至少一个分离的梳状电极,其与输入换能器的其余部分电绝缘。

    Surface acoustic wave resonator device
    9.
    发明授权
    Surface acoustic wave resonator device 失效
    表面声波谐振器装置

    公开(公告)号:US4340834A

    公开(公告)日:1982-07-20

    申请号:US181746

    申请日:1980-08-27

    申请人: Kouji Sato

    发明人: Kouji Sato

    摘要: This disclosure concerns surface acoustic wave resonator devices having grating reflectors. The resonator comprises a substrate of piezoelectric material, an input interdigital transducer which converts electrical energy to surface acoustic wave energy, an output interdigital transducer which converts surface acoustic wave energy to electrical energy, first and second grating reflectors arranged in spaced aligned relationship on opposite ends of the substrate with the input transducer and the output transducer interposed therebetween the input transducer and the output transducer.The first grating reflector, whose aperture length is the same effective length as the input and output transducers, comprises a first group of interconnected parallel spaced conductors, a second group of interconnected parallel spaced conductors and at least one of isolated parallel conductors positioned between the first and second group of conductors. Each conductor of the one group is aligned with a corresponding conductor of the first group and a corresponding conductor of the second group. Each conductor of the first and second group is parallel and electrically interconnected. The second grating reflector is identical with the first grating reflector.

    摘要翻译: 本公开涉及具有光栅反射器的声表面波谐振器装置。 谐振器包括压电材料的基底,将电能转换成表面声波能的输入叉指换能器,将表面声波能转换为电能的输出叉指式换能器,在相对端以间隔对准的关系布置的第一和第二光栅反射器 的输入传感器和输出传感器插入在输入传感器和输出换能器之间。 第一光栅反射器的孔径长度与输入和输出换能器具有相同的有效长度,包括第一组互连的平行隔开的导体,第二组互连的平行隔开的导体和至少一个隔离的平行导体, 和第二组导体。 一组中的每个导体与第一组的相应导体和第二组的相应导体对准。 第一组和第二组的每个导体是平行和电互连的。 第二光栅反射器与第一光栅反射器相同。

    Ip-Packet Relay Method and Gateway in Communication Network
    10.
    发明申请
    Ip-Packet Relay Method and Gateway in Communication Network 审中-公开
    通信网络中的Ip分组中继方法和网关

    公开(公告)号:US20080022000A1

    公开(公告)日:2008-01-24

    申请号:US11667488

    申请日:2004-11-11

    IPC分类号: G06F15/173

    摘要: A communication network includes a plurality of user networks that accommodates IP terminals and does not perform a call control function, a core network (a call control network) that is located among the user networks and performs a call control function and a call management function, and a gateway that connects the user networks to the core network. The gateway receives a communication request packet from the user network or a data packet that is initially transmitted, and analyzes the packet. Thus, the gateway establishes a necessary call in the core network to allow an IP packet to pass through the core network.

    摘要翻译: 通信网络包括容纳IP终端并且不执行呼叫控制功能的多个用户网络,位于用户网络之间并执行呼叫控制功能和呼叫管理功能的核心网络(呼叫控制网络) 以及将用户网络连接到核心网络的网关。 网关从用户网络或最初发送的数据包接收通信请求分组,并分析分组。 因此,网关在核心网络中建立必要的呼叫,以允许IP分组通过核心网络。