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    • 7. 发明授权
    • Production of crystalline materials by using high intensity ultrasound
    • 通过使用高强度超声波生产结晶材料
    • US07244307B2
    • 2007-07-17
    • US10513154
    • 2003-05-08
    • Linda Jane McCausland
    • Linda Jane McCausland
    • C30B15/01
    • B01D9/0013B01D9/005B01D9/0054B01D9/0081
    • A crystalline material sufficiently pure for use in pharmaceuticals may be made by forming a saturated solution of the material changing the temperature of the solution so it becomes supersaturated, and briefly subjecting the solution to irradiation by high intensity ultrasound, before allowing the solution to cool gradually without further irradiation. The ultrasound may be applied using a vessel with an array of ultrasonic transducers attached to a wall, so each transducer radiates no more than 3 W/cm2 yet the power dissipation within the vessel is between 25 and 150 W/litre. This method can reduce the metastable zone width to less than 10 K. There is no erosion of the wall and consequently no formation of small particles of metal. It is applicable for example to aspartame, and to amino acids.
    • 用于药物的足够纯的结晶物质可以通过形成改变溶液温度的材料的饱和溶液使其变得过饱和,并且在使溶液逐渐冷却之前将溶液短暂地经过高强度超声波照射, 无需进一步照射。 可以使用具有附接到壁的超声波换能器阵列的血管来应用超声波,因此每个换能器辐射不超过3W / cm 2,而容器内的功率耗散在25和150之间 W /升。 这种方法可以将亚稳区宽度减小到小于10K。没有壁的侵蚀,因此没有形成小的金属颗粒。 它适用于例如阿斯巴甜和氨基酸。
    • 8. 发明申请
    • Production of crystalline materials by using high intensity ultrasound
    • 通过使用高强度超声波生产结晶材料
    • US20050163683A1
    • 2005-07-28
    • US10513154
    • 2003-05-08
    • Linda McCausland
    • Linda McCausland
    • B01D9/00
    • B01D9/0013B01D9/005B01D9/0054B01D9/0081
    • A crystalline material sufficiently pure for use in pharmaceuticals may be made by forming a saturated solution of the material changing the temperature of the solution so it becomes supersaturated, and briefly subjecting the solution to irradiation by high intensity ultrasound, before allowing the solution to cool gradually without further irradiation. The ultrasound may be applied using a vessel with an array of ultrasonic transducers attached to a wall, so each transducer radiates no more than 3 W/cm2 yet the power dissipation within the vessel is between 25 and 150 W/litre. This method can reduce the metastable zone width to less than 10 K. There is no erosion of the wall and consequently no formation of small particles of metal. It is applicable for example to aspartame, and to amino acids.
    • 用于药物的足够纯的结晶物质可以通过形成改变溶液温度的材料的饱和溶液使其变得过饱和,并且在使溶液逐渐冷却之前将溶液短暂地经过高强度超声波照射, 无需进一步照射。 可以使用具有附接到壁的超声波换能器阵列的血管来应用超声波,因此每个换能器辐射不超过3W / cm 2,而容器内的功率耗散在25和150之间 W /升。 这种方法可以将亚稳区宽度减小到小于10K。没有壁的侵蚀,因此没有形成小的金属颗粒。 它适用于例如阿斯巴甜和氨基酸。
    • 9. 发明授权
    • Methods and apparatus for processing temperature sensitive materials
    • 温度敏感材料的处理方法和设备
    • US06808638B1
    • 2004-10-26
    • US09805770
    • 2001-06-25
    • Howard E. Purdum
    • Howard E. Purdum
    • B01D900
    • B01D9/005B01D7/00B01D9/0036B01D9/0059B01D9/0081B01D15/3866B01D17/042B01D17/048B01D21/26B01D61/243
    • A method and system (10) for selectively removing one component of a material thereby concentrating other components of the material are disclosed. The material is cooled to below the melting temperature of the material to form a supercooled liquid phase with heat transfer plate with cooling channels (20). Ultrasonic energy from ultrasonic drivers (42) is applied to the material to form solid phase crystals of the component to be removed. These crystals are removed to leave the concentrated products. The ultrasonic energy prevents the growth of dendrites on the crystals, resulting in the formation and removal of small crystals of the component to be removed without damage to or removal of the remaining components. Methods and apparatuses for cryoprecipilation and chromatography are also disclosed.
    • 公开了一种用于选择性地去除材料的一个部件从而集中材料的其它部件的方法和系统(10)。 将材料冷却至材料的熔融温度以形成具有带有冷却通道(20)的传热板的过冷液相。 将来自超声波驱动器(42)的超声波能量施加到该材料上以形成待除去部件的固相晶体。 去除这些晶体以留下浓缩的产物。 超声波能量可防止晶体上的枝晶生长,导致要除去的组分的小晶体的形成和去除,而不损坏或除去其余组分。 还公开了用于冷沉淀和色谱法的方法和装置。