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    • 47. 发明授权
    • Particulate filter and method of use
    • 颗粒过滤器和使用方法
    • US08555700B2
    • 2013-10-15
    • US13717328
    • 2012-12-17
    • Measurement Technology Laboratories, LLC
    • David A. Dikken
    • G01N1/22G01N5/00B01D69/02B01D69/10
    • G01N5/02B01D39/1692B01D63/021B01D63/08B01D69/02B01D69/10B01D71/36B01D2313/025B01D2325/00B01D2325/02B01D2325/04B01D2325/20B01D2325/38G01N1/2205G01N1/2252G01N15/0618G01N35/00732G01N2015/0046G01N2035/00772
    • A particulate filter particularly suited for analytical gravimetric weighing applications is disclosed. The particulate filter includes a polytetrafluoroethylene (PTFE) media supported by a ring and yields stable microgram and submicrogram weighing results. The support ring may be PTFE, metal foil, or another non-hygroscopic polymer such that the mass of the filter does not vary with changes in atmospheric moisture. The filter simplifies the discharge of electrostatic charge buildup such that when a conductive filter media is combined with a conductive ring device, the discharge may be accomplished by placing the filter on a grounded weighing pan or other surface. The particulate filter can simplify filter identification by including identification symbols imprinted on each side of the filter media. Due to the chemically inert qualities of its components, the particulate filter is particularly suited for extraction techniques used during the detection of polycyclic hydrocarbons as is conducted in emissions and ambient air testing.
    • 公开了一种特别适用于分析重量称重应用的微粒过滤器。 颗粒过滤器包括由环支撑的聚四氟乙烯(PTFE)介质,并产生稳定的微克和亚微米的称重结果。 支撑环可以是PTFE,金属箔或另一种非吸湿性聚合物,使得过滤器的质量不随大气水分的变化而变化。 该滤波器简化了静电电荷积聚的放电,使得当导电过滤介质与导电环装置组合时,可以通过将过滤器放置在接地的称重盘或其它表面上来实现放电。 颗粒过滤器可以通过包括印在过滤介质两侧的识别符号来简化过滤器识别。 由于其组分的化学惰性特性,颗粒过滤器特别适用于在排放和环境空气测试过程中进行的多环烃检测期间使用的萃取技术。
    • 48. 发明授权
    • Polysulfone-based blood treatment membrane and method of producing the same
    • 聚砜类血液处理膜及其制造方法
    • US08220642B2
    • 2012-07-17
    • US12601543
    • 2008-05-26
    • Junya SatohTakahiro IchiShunji Maniwa
    • Junya SatohTakahiro IchiShunji Maniwa
    • B01D69/00B01D69/02B01D67/00
    • B01D71/68A61L33/068B01D67/0011B01D69/141B01D2325/00B01D2325/24C08L81/06
    • A polysulfone-based blood treatment membrane that exhibits excellent antioxidant properties, excellent long-term storage stability, and a practical strength, and ensures high productivity, a polysulfone-based blood treatment membrane that exhibits excellent antioxidant properties and long-term storage stability, rarely allows endotoxins to enter a treatment liquid, exhibits a practical strength, and ensures high productivity, and a method of producing the same. A polysulfone-based blood treatment membrane includes a polysulfone-based resin, a hydrophilic polymer, and a lipophilic antioxidant, the membrane containing the lipophilic antioxidant in an amount of 30 to 76 mg per gram of the membrane, and the total amount of the lipophilic antioxidant present on the surface of the membrane being 4 to 25 mg per gram of the membrane. Another polysulfone-based blood treatment membrane contains a lipophilic antioxidant in an amount of 30 to 76 mg per gram of the membrane, wherein the inner surface of the membrane has a TOF-SIMS normalized peak intensity of the lipophilic antioxidant of 1.8.times.10.sup.-4 or more, and the outer surface of the membrane has a TOF-SIMS normalized peak intensity of the lipophilic antioxidant of 2.4.times.10.sup.-4 or more. A method of producing a polysulfone-based blood treatment membrane that includes a polysulfone-based resin, a hydrophilic polymer, and a lipophilic antioxidant includes producing a membrane intermediate that contains the lipophilic antioxidant in an amount of 30 to 76 mg per gram of the membrane intermediate, and heating the membrane intermediate at 100 to 180.degree. C. for 0.1 to 360 minutes in a dry state.
    • 一种聚砜系血液处理膜,其表现出优异的抗氧化性能,优异的长期保存稳定性和实用强度,并且确保高生产率,表现出优异的抗氧化性能和长期保存稳定性的聚砜系血液处理膜,很少 允许内毒素进入处理液,具有实用的强度,并且确保高生产率及其制备方法。 基于聚砜的血液处理膜包括聚砜系树脂,亲水性聚合物和亲脂性抗氧化剂,每克膜含有30〜76mg的亲脂性抗氧化剂的膜和亲脂性的总量 存在于膜表面的抗氧化剂每克膜为4至25mg。