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
    • 14. 发明授权
    • Process for the manufacture of 2-phenyl-4,5-oxazoledione
4-phenylhydrazone derivatives
    • 2-苯基-4,5-恶唑二酮4-苯腙衍生物的制备方法
    • US5646291A
    • 1997-07-08
    • US431573
    • 1995-05-01
    • Hajime HoshiKazuhiko SunagawaTakeo Watanabe
    • Hajime HoshiKazuhiko SunagawaTakeo Watanabe
    • C09B26/02C07D263/18
    • C09B26/02
    • A process for manufacturing derivatives of 2-phenyl-4,5-oxazoledione 4-phenylhyrazone is disclosed. The process comprises reacting a derivative of a benezenediazonium salt, a hippuric acid derivative, and acetic anhydride in the presence of a neutralizing agent to effect the cyclization reaction for the formation of the oxazolone ring and the succeeding diazo-coupling reaction. The process does not require the conventional separate, independent step for the preparation of a solution of a hippuric acid derivative and acetic anhydride, thus eliminating the quick heating and quenching procedures and further avoiding the loss of the hippuric acid derivative due to decomposition of the oxazolone derivative. There is thus obtained a high yield of the desired product in a short period of time.
    • 公开了一种制备2-苯基-4,5-恶唑二酮4-苯基腙的衍生物的方法。 该方法包括在中和剂存在下使衍生重氮盐,马尿酸衍生物和乙酸酐的衍生物进行反应,以进行恶唑酮环的形成和后续的重氮偶合反应的环化反应。 该方法不需要用于制备马尿酸衍生物和乙酸酐的常规独立的独立步骤,因此消除了快速加热和淬灭程序,并进一步避免了由于恶唑酮分解导致的马尿酸衍生物的损失 衍生物。 因此在短时间内获得了高产率的所需产物。
    • 18. 发明申请
    • TELEPHONE SYSTEM AND SERVER APPARATUS
    • 电话系统和服务器设备
    • US20080181387A1
    • 2008-07-31
    • US12021837
    • 2008-01-29
    • Takeo Watanabe
    • Takeo Watanabe
    • H04M7/00
    • H04M3/5183H04M2207/203
    • According to one embodiment, a telephone system includes a plurality of telephone exchange apparatuses which execute exchange processing among a plurality of telephone terminals and a server apparatus which is connected to the plurality of telephone exchange apparatuses via transmission paths, receives a call information event to specify a plurality of telephone terminals to be call-connected, and executes a computer supported telephony application with prescribed standards regarding call state management of the plurality of telephone terminals, wherein the server apparatus includes a controller which returns a telephone terminal which has become an extra state of the standards to a state in the standards, when the sate in the standards changes into the extra state of the standards in a state in which call connections among a plurality of telephone terminals connected to telephone exchange apparatuses different from one another.
    • 根据一个实施例,电话系统包括执行多个电话终端之间的交换处理的多个电话交换设备和经由传输路径连接到多个电话交换设备的服务器设备,接收呼叫信息事件以指定 要呼叫连接的多个电话终端,并且执行关于多个电话终端的呼叫状态管理的规定标准的计算机支持的电话应用,其中,服务器装置包括控制器,该控制器返回已成为额外状态的电话终端 当标准中的状态在连接到电话交换设备的多个电话终端之间的呼叫连接彼此不同的状态下变为标准的额外状态时,标准中的状态变为标准的额外状态。