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    • 6. 发明授权
    • Apparatus for use in a telephone exchange including an operator
cordboard position
    • 用于电话交换机中的装置,包括操作员线路板位置
    • US4351984A
    • 1982-09-28
    • US172236
    • 1980-07-25
    • Robert E. YoungRichard K. Huffman
    • Robert E. YoungRichard K. Huffman
    • H04M15/26H04M3/60
    • H04M15/26
    • Apparatus is provided for eliminating manual completion of tickets by operators at operator positions, one or more of which are operator cordboard positions, of a telephone exchange. The apparatus comprises a keyboard and display unit and an independently operable processing and storage unit provided individually for each operator position, the operator position and keyboard and display unit being connected to the processing and storage unit. Each operator position functions with its associated units independently of the other operator positions and any central processing unit. All of the processing and storage units are coupled via a concentrator to automatic message accounting equipment for forwarding call records thereto for billing. The concentrator is connected to teletypewriters and also to a storage unit for storage of call records in the event of failure of the automatic message accounting equipment.
    • 提供了用于消除操作员在电话交换机的操作员位置(其中一个或多个是操作员线路板位置)手动完成票据的装置。 该装置包括键盘和显示单元以及独立地为每个操作者位置设置的独立可操作的处理和存储单元,操作员位置和键盘和显示单元连接到处理和存储单元。 每个操作员位置与其相关联的单元独立于其他操作员位置和任何中央处理单元。 所有的处理和存储单元经由集中器耦合到自动消息计费设备,用于转发呼叫记录以进行计费。 集中器连接到电传打字机,也连接到存储单元,用于在自动消息计费设备发生故障的情况下存储呼叫记录。
    • 8. 发明授权
    • Preparation of high purity sodium (S)-2(6-methoxy-2-naphthyl)propionate
    • 制备高纯度(S)-2(6-甲氧基-2-萘基)丙酸钠
    • US5859292A
    • 1999-01-12
    • US988796
    • 1997-12-11
    • Hao V. PhanRobert E. Young
    • Hao V. PhanRobert E. Young
    • C07C51/41C07C63/34
    • C07C51/412
    • Sodium (S)-2-(6-methoxy-2-naphthyl)propionate of at least 99% chiral purity is formed from (S)-2-(6-methoxy-2-naphthyl)propionic acid having a chiral purity of at least about 82%, but below 99%. This is done by distilling a two-phase mixture formed from (i) the (S)-2-(6-methoxy-2-naphthyl)propionic acid, (ii) water, (iii) sodium hydroxide, sodium oxide and/or at least one basic inorganic sodium salt in an amount proportioned to neutralize from about 50 to about 99% of said acid, and optionally but preferably, (iv) an inert organic solvent that has a boiling point of at least 95.degree. C. at 760 mm Hg such that water is removed from said mixture, and a pot residue containing sodium (S)-2-(6-methoxy-2-naphthyl)propionate of at least 99% chiral purity is formed.
    • 具有至少99%手性纯度的(S)-2-(6-甲氧基-2-萘基)丙酸钠由手性纯度为(S)-2-(6-甲氧基-2-萘基)丙酸形成 至少约82%,但低于99%。 这是通过蒸馏由(i)(S)-2-(6-甲氧基-2-萘基)丙酸形成的两相混合物,(ii)水,(iii)氢氧化钠,氧化钠和/或 至少一种碱性无机钠盐,其成分为中和所述酸的约50至约99%,并且任选但优选(iv)在760℃下具有至少95℃的沸点的惰性有机溶剂 mm Hg,使得从所述混合物中除去水,并形成含有至少99%手性纯度的(S)-2-(6-甲氧基-2-萘基)丙酸钠的罐残渣。