会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Gel particles having hapten moieties bound thereto as immunoassay reagent
    • 具有作为免疫测定试剂结合的半抗原部分的凝胶颗粒
    • US5045480A
    • 1991-09-03
    • US308658
    • 1989-02-09
    • Richard D. JohnsonH.-Volker RunzheimerRonald G. SommerKin F. Yip
    • Richard D. JohnsonH.-Volker RunzheimerRonald G. SommerKin F. Yip
    • G01N33/543
    • G01N33/54353G01N33/54313
    • An immobilized hapten reagent for use in a specific binding assay for the determination of a hapten or binding analog thereof in a liquid test sample and methods for preparing and using the immobilized hapten reagent. The immobilized hapten reagent comprises a hapten moiety covalenty linked substantially only to the external surface of a gel particle. The immobilized hapten reagent is prepared by forming a reaction mixture comprising the hapten moiety and the carrier material in a nonswelling solvent wherein the gel particle is substantially impervious to the hapten moiety and wherein an analytically insignificant amount of the hapten moiety is nonspecifically bound to the gel particle. The immobilized hapten reagent is characterized by being substantially stable in aqueous solutions and exhibits an insignificant amount of leakage of the hapten moiety into a liquid test medium.
    • 用于特异性结合测定中用于测定液体测试样品中的半抗原或结合类似物的固定化半抗原试剂以及制备和使用固定化半抗原试剂的方法。 固定化的半抗原试剂包含基本上仅与凝胶颗粒的外表面共价连接的半抗原部分。 通过在非溶剂溶剂中形成包含半抗原部分和载体材料的反应混合物来制备固定化的半抗原试剂,其中凝胶颗粒基本上不渗透半抗原部分,并且其中分析上不显着量的半抗原部分非特异性结合凝胶 粒子。 固定化的半抗原试剂的特征在于在水溶液中基本上是稳定的,并且将半抗原部分泄漏的液体试验介质的数量不大。
    • 7. 发明授权
    • Compound useful in detecting ions and method of preparing it
    • 用于检测离子的化合物及其制备方法
    • US4552697A
    • 1985-11-12
    • US493951
    • 1983-05-12
    • Kin F. YipSteven C. Charlton
    • Kin F. YipSteven C. Charlton
    • C07C49/67C07C49/747C07C51/347C07C57/30C07C59/84C07C67/00C07C241/00C07C249/02C07C251/20C07C251/22G01N33/84C07C97/22
    • G01N33/84C07C49/67C07C49/747C07C51/347C07C57/30C07C59/84
    • A novel compound is disclosed having the structure ##STR1## in which R is H or lower alkyl, R* is intermediate alkyl, and X is halogen or pseudohalogen. Also disclosed is a method for preparing the compound, the method including the steps of reacting (intermediate alkyl)benzene (I) with succinic anhydride to form (intermediate alkyl)-benzoylpropionic acid (II), successively reducing and dehydrating (II) to form 7-(intermediate alkyl)-1-tetralone (III), alkylating (III) to form 2-hydroxy(lower alkylidene)-7-(intermediate alkyl)-1-tetralone (IV), acrylating (IV) to form 2-acyloxy(lower alkylidene)-7-(intermediate alkyl)-1-tetralone (V), reacting (V) in the presence of an cycloalkene to form 7(intermediate alkyl)-2-(lower alkyl)-1-naphthol (VI), reacting (VI) with a 2,6-dihaloquinone-4-haloimide to form the compound (I), and isolating it.
    • 公开了具有结构式(Ⅰ)的新化合物,其中R为H或低级烷基,R *为中间体烷基,X为卤素或假卤素。 还公开了一种制备该化合物的方法,该方法包括使(中间体烷基)苯(I)与琥珀酸酐反应形成(中间体烷基) - 苯甲酰基丙酸(II)的步骤,依次还原和脱水(II)形成 7-(中间体烷基)-1-四氢萘酮(III),烷基化(III)以形成2-羟基(低级亚烷基)-7-(中间体烷基)-1-四氢萘酮(IV),丙烯酸酯化(IV) 酰基氧基(低级亚烷基)-7-(中间体烷基)-1-四氢萘酮(V),使(V)在环烯烃存在下反应形成7(中间体烷基)-2-(低级烷基)-1-萘酚 ),使(VI)与2,6-二卤代醌-4-卤代酰亚胺反应以形成化合物(I),并将其分离。
    • 9. 发明授权
    • Apparatus for reduction of bias in amperometric sensors
    • 用于减小电流传感器偏压的装置
    • US5620579A
    • 1997-04-15
    • US435993
    • 1995-05-05
    • Marvin A. GenshawDijia HuangMatthew K. MushoKin F. Yip
    • Marvin A. GenshawDijia HuangMatthew K. MushoKin F. Yip
    • G01N33/483C12Q1/00G01N27/327G01N27/416G01N27/48G01N33/66G01N33/72G01N33/92G01N27/26
    • C12Q1/004
    • Apparatus and method are provided for determining the concentration of an analyte in a fluid test sample by applying the fluid test sample to the surface of a working electrode which is electrochemically connected to a reference electrode which surface bears a composition comprising an enzyme specific for the analyte. A mediator is reduced in response to a reaction between the analyte and the enzyme. An oxidizing potential is applied between the electrodes to return at least a portion of the mediator back to its oxidized form before determining the concentration of the analyte to thereby increase the accuracy of the analyte determination. Following this initially applied potential, the circuit is switched to an open circuit or to a potential that substantially reduces the current to minimize the rate of electrochemical potential at the working electrode. A second potential is applied between the electrodes and the current generated in the fluid test sample is measured to determine analyte concentration. Optionally, the accuracy of the analyte determination is further enhanced algorithmically.
    • 提供了设备和方法,用于通过将流体测试样品施加到电化学连接到参考电极的工作电极的表面上来确定流体测试样品中分析物的浓度,所述参考电极的表面承载包含对于分析物特异的酶的组合物 。 响应分析物和酶之间的反应而减少介体。 在确定分析物的浓度之前,在电极之间施加氧化电位以将至少一部分介体返回到其氧化形式,从而提高分析物确定的准确度。 在该最初施加的电位之后,电路被切换到开路或电位,其基本上减小电流以最小化工作电极处的电化学电势的速率。 在电极之间施加第二电位,并测量在流体测试样品中产生的电流以确定分析物浓度。 任选地,分析物确定的准确度进一步在算法上增强。