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37 条记录 (耗时 0.141 秒)

    Acetone recovery and purification
    23.
    发明授权
    Acetone recovery and purification 有权

    公开(公告)号：US11339108B2

    公开(公告)日：2022-05-24

    申请号：US17351520

    申请日：2021-06-18

    申请人： Truc Van Vu ,  Eric Wing-Tak Wong ,  Paul Isaac Damin ,  Ravi Shanker Sahu

    发明人： Truc Van Vu ,  Eric Wing-Tak Wong ,  Paul Isaac Damin ,  Ravi Shanker Sahu

    IPC分类号： C07C45/82 ,  C07C45/85

    摘要： Methods and systems for preparing acetone from cumene hydroperoxide (CHP) are disclosed. The disclosed methods involve cleaving CHP to form a cleavage product stream. In some embodiments, the cleavage product stream is separated into an overhead stream and a bottoms stream. The bottoms stream is neutralized, washed and then treated in a crude acetone column to provide a crude acetone stream. The overhead stream of the cleavage product is flashed forward in the process, bypassing the neutralization, washing, and crude acetone column and is then combined with the crude acetone stream. The combined acetone streams are provided to an acetone product column. According to some embodiments, the acetone product column comprises a side draw for obtaining a recycle acetone stream, which is recycled to the cleavage reactor(s). The recycle acetone side draw may be located lower on the acetone product column than the point from which product acetone is obtained. The disclosed methods increase the efficiency of the process.

    ACETONE RECOVERY AND PURIFICATION
    24.
    发明申请
    ACETONE RECOVERY AND PURIFICATION 有权

    公开(公告)号：US20210395180A1

    公开(公告)日：2021-12-23

    申请号：US17351520

    申请日：2021-06-18

    申请人： Truc Van Vu ,  Eric Wing-Tak Wong ,  Paul Isaac Damin ,  Ravi Shanker Sahu

    发明人： Truc Van Vu ,  Eric Wing-Tak Wong ,  Paul Isaac Damin ,  Ravi Shanker Sahu

    IPC分类号： C07C45/85

    摘要： Methods and systems for preparing acetone from cumene hydroperoxide (CHP) are disclosed. The disclosed methods involve cleaving CHP to form a cleavage product stream. In some embodiments, the cleavage product stream is separated into an overhead stream and a bottoms stream. The bottoms stream is neutralized, washed and then treated in a crude acetone column to provide a crude acetone stream. The overhead stream of the cleavage product is flashed forward in the process, bypassing the neutralization, washing, and crude acetone column and is then combined with the crude acetone stream. The combined acetone streams are provided to an acetone product column. According to some embodiments, the acetone product column comprises a side draw for obtaining a recycle acetone stream, which is recycled to the cleavage reactor(s). The recycle acetone side draw may be located lower on the acetone product column than the point from which product acetone is obtained. The disclosed methods increase the efficiency of the process.

    Switched capacitor regulator for driving high load current
    25.
    发明授权
    Switched capacitor regulator for driving high load current 有权
    用于驱动高负载电流的开关电容调节器

    公开(公告)号：US07638982B2

    公开(公告)日：2009-12-29

    申请号：US11520491

    申请日：2006-09-13

    申请人： Kong-Yin Leong ,  Ravi Shanker

    发明人： Kong-Yin Leong ,  Ravi Shanker

    IPC分类号： H02J7/00

    CPC分类号： H02M3/07

    摘要： A switched capacitor regulator in accordance with the present invention comprises a DC voltage source, a plurality of switches, a pumping capacitor, and a load capacitor. The plurality of switches may comprise semiconductor switches implemented in an integrated circuit (IC). The plurality of switches is configured to operate the switched capacitor regulator to place the regulator into a first charging stage and, alternately, a second charging stage. The switching between the first stage and the second stage results in the pumping capacitor being charged in opposing directions, while the load capacitor is always being charged in the same direction. The load capacitor is thus being charged in both the first charging stage and the second charging stage.

    摘要翻译： 根据本发明的开关电容调节器包括直流电压源，多个开关，泵浦电容器和负载电容器。 多个开关可以包括在集成电路（IC）中实现的半导体开关。 多个开关被配置为操作开关电容器调节器以将调节器置于第一充电阶段中，并且可选地，将第二充电阶段放置。 第一级和第二级之间的切换导致泵送电容器沿相反的方向充电，而负载电容器总是沿相同的方向充电。 因此，负载电容器在第一充电阶段和第二充电阶段都被充电。

    Switched capacitor regulator for driving high load current
    27.
    发明申请
    Switched capacitor regulator for driving high load current 有权
    用于驱动高负载电流的开关电容调节器

    公开(公告)号：US20070210781A1

    公开(公告)日：2007-09-13

    申请号：US11520491

    申请日：2006-09-13

    申请人： Kong-Yin Leong ,  Ravi Shanker

    发明人： Kong-Yin Leong ,  Ravi Shanker

    IPC分类号： G05F1/00

    CPC分类号： H02M3/07

    摘要： A switched capacitor regulator in accordance with the present invention comprises a DC voltage source, a plurality of switches, a pumping capacitor, and a load capacitor. The plurality of switches may comprise semiconductor switches implemented in an integrated circuit (IC). The plurality of switches is configured to operate the switched capacitor regulator to place the regulator into a first charging stage and, alternately, a second charging stage. The switching between the first stage and the second stage results in the pumping capacitor being charged in opposing directions, while the load capacitor is always being charged in the same direction. The load capacitor is thus being charged in both the first charging stage and the second charging stage.

    摘要翻译： 根据本发明的开关电容调节器包括直流电压源，多个开关，泵浦电容器和负载电容器。 多个开关可以包括在集成电路（IC）中实现的半导体开关。 多个开关被配置为操作开关电容器调节器以将调节器置于第一充电阶段中，并且可选地，将第二充电阶段放置。 第一级和第二级之间的切换导致泵送电容器沿相反的方向充电，而负载电容器总是沿相同的方向充电。 因此，负载电容器在第一充电阶段和第二充电阶段都被充电。

    Compounds
    29.
    发明授权
    Compounds 失效
    化合物

    公开(公告)号：US06306883B1

    公开(公告)日：2001-10-23

    申请号：US09456019

    申请日：1999-12-03

    申请人： Jerry Leroy Adams ,  Timothy Francis Gallagher ,  Ravi Shanker Garigipati ,  Susan Mary Thompson

    发明人： Jerry Leroy Adams ,  Timothy Francis Gallagher ,  Ravi Shanker Garigipati ,  Susan Mary Thompson

    IPC分类号： C07D40104

    CPC分类号： C07D401/04 ,  C07D403/04

    摘要： This invention relates to the novel pyrazole compounds of Formula (I), and pharmaceutical compositions comprising a compound of formula (I) and a pharmaceutically acceptable diluent or carrier. This invention also relates to a method of inhibiting cytokines by a compound of formula (I) and the treatment of cytokines mediated diseases, in mammals, by administration of said compound.

    摘要翻译： 本发明涉及式（I）的新型吡唑化合物和包含式（I）化合物和药学上可接受的稀释剂或载体的药物组合物。本发明还涉及通过式（I）化合物抑制细胞因子的方法 ）和通过施用所述化合物在哺乳动物中治疗细胞因子介导的疾病。