Dianhydride analysis method
    1.
    发明授权

    公开(公告)号:US11639917B2

    公开(公告)日:2023-05-02

    申请号:US16959489

    申请日:2019-09-23

    申请人: LG Chem, Ltd.

    摘要: The present invention relates to a dianhydride analysis method, which can reliably analyze a dianhydride having high reactivity and low solubility. In addition, the present invention can analyze the structure of impurities by separating the impurities on the basis of having a similar retention time in HPLC analysis, and can analyze the purity of the dianhydride with or without chromophores.

    FLUID ANALYZER WITH REMOVABLE TEST CELL FOR DETECTION AND QUANTITATION OF COMPOUNDS IN LIQUIDS

    公开(公告)号:US20230089762A1

    公开(公告)日:2023-03-23

    申请号:US17792105

    申请日:2021-01-28

    IPC分类号: G01N30/74

    摘要: A fluid analyzer (214) that analyzes a sample (12) includes (i) an analyzer frame (236); (ii) a module (216) that includes a test cell assembly (242) that receives the sample (12) and a module frame (244) that retains the test cell assembly (242); (iii) a laser assembly (238) that generates a laser beam (239A) that is directed through the test cell assembly (242), the laser assembly (238) being coupled to the analyzer frame (236); (iv) a signal detector assembly (232) that collects a test signal light (239B) transmitted through the test cell assembly (242), the signal detector assembly (232) being coupled to the analyzer frame (236); and (v) a coupler assembly (245) that selectively couples the module frame (244) to the analyzer frame (236).

    METHOD FOR ADAPTING THE CONCENTRATION OF A SAMPLE GAS IN A GAS MIXTURE TO BE ANALYSED BY A GAS CHROMATOGRAPH ASSEMBLY, AND CHROMATOGRAPH ASSEMBLY THEREFORE

    公开(公告)号:US20230021741A1

    公开(公告)日:2023-01-26

    申请号:US17788254

    申请日:2020-12-09

    申请人: INFICON GmbH

    IPC分类号: G01N30/74 G01N30/38 G01N30/06

    摘要: Method for adapting the concentration of a sample gas in a gas mixture to be analysed by a gas chromatograph assembly (10), the gas chromatograph assembly (10) comprising a sample gas inlet (20) for introducing a sample gas to be analysed, a secondary gas inlet (40), a gas chromatograph infrared sensor (12), a gas chromatograph column (26), and a gas chromatograph bypass (28) parallel to the column (26), characterized by a) introducing an amount of sample gas through the sample gas inlet (20), b) introducing an amount of secondary gas through the secondary gas inlet (40), c) mixing the sample gas and the secondary gas to a gas mixture and conducting the gas mixture via the gas chromatograph bypass (28), d) circulating the gas mixture in a gas conducting loop (52) comprising the gas chromatograph bypass (28), the gas chromatograph infrared sensor (12) and not comprising the gas chromatograph column (26), e) analysing the gas mixture thus obtained by means of gas chromatography employing the gas chromatograph column (26) and the gas chromatograph infrared sensor (12).

    Sulfur chemiluminescence detector analysis system, display control method and non-transitory computer readable medium

    公开(公告)号:US11493449B2

    公开(公告)日:2022-11-08

    申请号:US16539102

    申请日:2019-08-13

    IPC分类号: G01N21/76 G01N30/74 G01N30/02

    摘要: When an operation receiver receives an operation for starting automatic start-up processing, a display controller causes a display to display a first direction image indicating a working order of a plurality of objects to be controlled, sequentially changes a display mode of a status image corresponding to an object that has worked to a first mode, and changes a display state of each of a plurality of operation images to an operable first state or an inoperable second state. When the operation receiver receives an operation for starting automatic stop processing, the display controller causes the display to display a second direction image indicating a stopping order of the plurality of objects in a reversed manner of the first direction image, sequentially changes a display mode of a status image corresponding to an object that has stopped to a second mode.

    Methods and compositions for modulating complex mixtures by selective deletion chromatography

    公开(公告)号:US11478524B1

    公开(公告)日:2022-10-25

    申请号:US16050621

    申请日:2018-07-31

    发明人: Bill J. Baker

    摘要: The present disclosure relates to methods of modifying complex extracts such that components or mixtures of components are selectively removed or added, thus providing a complex mixture that does not naturally occur with a refined or a tuned therapeutic or nutraceutical effect. In various aspects, the complex extract can be an extract obtained from one or more plants, e.g., an extract obtained from green tea leaves. The present disclosure pertains to compositions obtained by the disclosed methods, nutraceutical compositions comprising same, pharmaceutical compositions comprising same, and methods of treating various conditions, including physiological dysfunctions associated with elevated reactive oxygen species and/or inflammatory molecule, e.g., TNFα, expression using same. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

    Control device for chromatograph apparatus

    公开(公告)号:US11448625B2

    公开(公告)日:2022-09-20

    申请号:US16477000

    申请日:2017-01-10

    摘要: A chromatograph apparatus control device according to the present disclosure is a control device for controlling a chromatograph apparatus having the function of a liquid chromatograph and that of a supercritical fluid chromatograph. The control device includes a first-type method file creator configured to create a first-type method file describing a condition of an analysis by a liquid chromatograph; a second-type method file creator configured to create a second-type method file describing a condition of an analysis by a supercritical fluid chromatograph; and a batch file creator configured to create a single batch file including a plurality of records describing a group of method files including the first-type method file and the second-type method file, with one method file in each record.