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    • 3. 发明申请
    • HIGH VOLUME SAMPLING FRONT END COLLECTION DEVICE
    • 高容量采样前端收集装置
    • US20120152038A1
    • 2012-06-21
    • US13156778
    • 2011-06-09
    • Inho Cho
    • Inho Cho
    • G01N1/44
    • G01N1/24G01N1/2205G01N1/44
    • A device for sampling surfaces for the presence of compounds is provided, the device comprising a housing having a proximal end adapted to receive a negative pressure gradient and a distal end adapted to contact the surfaces; a heating element spaced medially from the distal end, the heating element positioned within the housing; a primary filter spaced medially from the heating element, the primary filter encased by the housing; and a secondary filter spaced medially from the primary filter, the secondary filter removably received by the housing. Also provided is a method for sampling a surface for the presence of compounds, the method comprising contacting the surface for a time and with a pressure to dislodge the compounds from the surface; capturing first fractions of the compounds with a primary filter while allowing second fractions of the compounds to pass through the primary filter; heating the primary filter for a time and at a temperature sufficient to volatilize the first fractions; capturing the volatized first fractions and the second fractions with a secondary filter; and analyzing the secondary filter for the identity of the compounds.
    • 提供了一种用于采样化合物存在的表面的装置,该装置包括具有适于接收负压梯度的近端和适于接触表面的远端的壳体; 加热元件,其从所述远端中间隔开,所述加热元件定位在所述壳体内; 与加热元件中间隔开的主过滤器,主过滤器由壳体包围; 以及从主过滤器中间隔开的次级过滤器,二次过滤器由壳体可拆卸地接收。 还提供了一种用于对化合物存在的表面进行取样的方法,该方法包括使表面接触一段时间和压力以从表面上除去化合物; 用初级过滤器捕获化合物的第一级分,同时允许化合物的第二级分通过初级过滤器; 将初级过滤器加热一段时间并在足以挥发第一级分的温度下进行; 用二次过滤器捕获挥发的第一馏分和第二馏分; 并分析二级过滤器的化合物的身份。
    • 4. 发明授权
    • High volume sampling front end collection device
    • 大容量取样前端采集装置
    • US08578796B2
    • 2013-11-12
    • US13156778
    • 2011-06-09
    • Inho Cho
    • Inho Cho
    • G01N1/22G01N37/00
    • G01N1/24G01N1/2205G01N1/44
    • A device for sampling surfaces for the presence of compounds is provided, including a housing having a proximal end adapted to receive it negative pressure gradient and a distal end adapted to contact the surfaces; a heating element spaced from the distal end; a primary filter spaced from the heating element; and a secondary filter spaced from the primary filter, the secondary filter removably received by the housing. Also provided is as method for sampling a surface for the presence of compounds, the method including contacting the surface to dislodge the compounds from the surface; capturing first fractions of the compounds with a primary filter while allowing second fractions of the compounds to pass through the primary filter; heating the primary filter to volatilize the first fractions; capturing the volatized first fractions and the second fractions with a secondary filter; and analyzing the secondary filter to identify the compounds.
    • 提供了一种用于采样化合物存在的表面的装置,包括具有适于接收负压梯度的近端的壳体和适于接触表面的远端; 与远端隔开的加热元件; 与加热元件间隔开的初级过滤器; 以及与主过滤器间隔开的次级过滤器,二次过滤器由壳体可拆卸地接收。 还提供了用于取代化合物存在的表面的方法,所述方法包括使表面接触以从表面上除去化合物; 用初级过滤器捕获化合物的第一级分,同时允许化合物的第二级分通过初级过滤器; 加热初级过滤器以挥发第一级分; 用二次过滤器捕获挥发的第一馏分和第二馏分; 并分析二次过滤器以鉴定化合物。