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    • 4. 发明授权
    • Single-step, solid-state competitive immunoassay
    • 单步,固态竞争性免疫测定
    • US5891658A
    • 1999-04-06
    • US671378
    • 1996-06-27
    • Stanley M. KlainerStephen L. CoulterGeoffrey F. Hewitt
    • Stanley M. KlainerStephen L. CoulterGeoffrey F. Hewitt
    • G01N33/543G01N33/53G01N33/552
    • G01N33/54386G01N33/54373Y10S435/808Y10S436/805
    • Simplicity, sensitivity and versatility of optical sensors based on competitive immunoassays using antibody-antigen reactions are achieved by solid-state, single-step reactions which permit accurate sensitive qualitative and quantitative information to be obtained without human participation. All of the chemistry-biochemistry is an inherent part of the sensor. A direct reaction occurs when the sample (antigen) is brought in contact with the sensor. The sensitivity of the competitive immunoassay optical sensor is controlled and increased by selecting a tag for the antigen or altering the attachment of a tag to an antigen so that the binding of tagged antigen to an antibody is decreased relative to the binding of untagged antigen to the antibody. The user can vary size, molecular weight and geometric configuration of the tagged antigen. This can be accomplished by selecting the proper tag or by attaching the indicator material to the antigen through a spacer or by attaching the tag directly to the antigen and attaching a compound of proper molecular weight and size elsewhere. Pretreatment of the substrate to which the antibody-bound tagged antigen is immobilized to block the surface from unwanted interferences and the use of optical isolation increases sensitivity. If the tag cannot be attached to the antigen, it is attached to the antibody. Attaching the controlled size, molecular weight tag to either the antigen or antibody permits the analysis of species not normally measureable by competitive immunoassay, thus increasing the versatility of the method.
    • 基于使用抗体 - 抗原反应的竞争性免疫测定法的光学传感器的简单性,灵敏度和通用性通过固态单步反应实现,其允许在没有人参与的情况下获得准确的敏感性定性和定量信息。 所有的化学生物化学是传感器的固有部分。 当样品(抗原)与传感器接触时,会发生直接反应。 竞争性免疫测定光学传感器的灵敏度通过选择抗原标签或改变标签对抗原的附着来控制和增加,使得标记的抗原与抗体的结合相对于未标记的抗原与 抗体。 用户可以改变标记抗原的大小,分子量和几何构型。 这可以通过选择适当的标签或通过间隔物将指示剂材料附着到抗原上或通过将标签直接附着在抗原上并将其它地方具有合适的分子量和大小的化合物来实现。 固定有抗体结合标记的抗原的底物的预处理以阻止表面免受不想要的干扰,并且使用光学隔离增加灵敏度。 如果标签不能连接到抗原上,则其与抗体连接。 将受控大小的分子量标签附加到抗原或抗体上允许通过竞争性免疫测定通常不能测量的物种的分析,从而增加该方法的通用性。
    • 6. 发明授权
    • Ultrasensitive single-step, solid-state competitive immunoassay sensor
with interference modifier and/or gel layer
    • 具有干扰调节剂和/或凝胶层的超敏感单步,固态竞争性免疫测定传感器
    • US5780251A
    • 1998-07-14
    • US774389
    • 1996-12-30
    • Stanley M. KlainerStephen L. CoulterGeoffrey F. Hewitt
    • Stanley M. KlainerStephen L. CoulterGeoffrey F. Hewitt
    • G01N33/543G01N33/53G01N33/552
    • G01N33/54373G01N33/54386Y10S435/808Y10S436/805
    • Simplicity, sensitivity and versatility of optical sensors based on competitive immunoassays using antibody-antigen reactions are achieved by solid-state, single-step reactions which permit accurate sensitive qualitative and quantitative information to be obtained without human participation. All of the chemistry-biochemistry is an inherent part of the sensor. A direct reaction occurs when the sample (antigen) is brought in contact with the sensor. The sensitivity of the competitive immunoassay optical sensor is controlled and increased by selecting a tag for the antigen or altering the attachment of a tag to an antigen so that the binding of tagged antigen to an antibody is decreased relative to the binding of untagged antigen to the antibody. The user can vary size, molecular weight and geometric configuration of the tagged antigen. This can be accomplished by selecting the proper tag or by attaching the indicator material to the antigen through a spacer or by attaching the tag directly to the antigen and attaching a compound of proper molecular weight and size elsewhere. Pretreatment of the substrate to which the antibody-bound tagged antigen is immobilized to block the surface from unwanted interferences and the use of optical isolation increases sensitivity. If the tag cannot be attached to the antigen, it is attached to the antibody. Attaching the controlled size, molecular weight tag to either the antigen or antibody permits the analysis of species not normally measureable by competitive immunoassay, thus increasing the versatility of the method. Background from displaced tagged antigen can be reduced, and sensitivity increased, by including an interference modifier in the tagged antigen. A gel layer on the sensor extends the ability to detect gaseous or solid species by maintaining the sensing chemistry in an internal wet environment.
    • 基于使用抗体 - 抗原反应的竞争性免疫测定法的光学传感器的简单性,灵敏度和通用性通过固态单步反应实现,其允许在没有人参与的情况下获得准确的敏感性定性和定量信息。 所有的化学生物化学是传感器的固有部分。 当样品(抗原)与传感器接触时,会发生直接反应。 竞争性免疫测定光学传感器的灵敏度通过选择抗原标签或改变标签对抗原的附着来控制和增加,使得标记的抗原与抗体的结合相对于未标记的抗原与 抗体。 用户可以改变标记抗原的大小,分子量和几何构型。 这可以通过选择适当的标签或通过间隔物将指示剂材料附着到抗原上或通过将标签直接附着在抗原上并将其它地方具有合适的分子量和大小的化合物来实现。 固定有抗体结合标记的抗原的底物的预处理以阻止表面免受不想要的干扰,并且使用光学隔离增加灵敏度。 如果标签不能连接到抗原上,则其与抗体连接。 将受控大小的分子量标签附加到抗原或抗体上允许通过竞争性免疫测定通常不能测量的物种的分析,从而增加该方法的通用性。 通过在标记的抗原中包含干扰调节剂,可以减少来自置换的标签抗原的背景,并提高灵敏度。 传感器上的凝胶层通过将感测化学物质保持在内部湿润环境中,扩展了检测气态或固体物质的能力。
    • 7. 发明授权
    • Chip level waveguide sensor
    • 芯片级波导传感器
    • US5737457A
    • 1998-04-07
    • US587231
    • 1996-01-16
    • Devinder P. SainiStanley M. KlainerStephen L. Coulter
    • Devinder P. SainiStanley M. KlainerStephen L. Coulter
    • G01N21/43G01N21/77G02B6/42G02B6/43G02B6/00
    • G02B6/43G01N21/431G01N21/7703G02B6/42
    • Waveguide sensors are formed on a chip package which contains at least one source and at least one detector. Simple waveguide elements are mounted on the chip. Waveguide defining elements can also be formed integrally with the chip package so that simple waveguide bodies can be inserted or removed. Various geometries of source, reference detector, and sensing detector can be produced. A liquid waveguide sensor is formed by filling a waveguide channel with a liquid reagent or reagents homogeneously dispersed in sol-gels. Sensing waveguides are made of or contain chemistries or biochemistries or are uncoated. Reference waveguides are made of or contain chemistries, biochemistries or materials which are inert to the analyte (sample) of interest. The chip geometries are such that absorption, fluorescence, and refractive index measurements can be made.
    • 波导传感器形成在包含至少一个源和至少一个检测器的芯片封装上。 简单的波导元件安装在芯片上。 波导限定元件也可以与芯片封装一体地形成,从而可以插入或移除简单的波导体。 可以生产源,参考检测器和感测检测器的各种几何形状。 通过用均匀分散在溶胶中的液体试剂或试剂填充波导通道来形成液体波导传感器。 传感波导由化学物质或生物化学物质制成或包含或未被涂覆。 参考波导由对感兴趣的分析物(样品)是惰性的化学物质,生物化学物质或材料制成或包含。 芯片的几何形状使得可以进行吸收,荧光和折射率测量。