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1.发明公开公开(公告)号：US20240151697A1
公开(公告)日：2024-05-09
申请号：US18284354
申请日：2022-11-15
申请人： LG Chem, Ltd.
发明人： Kyeongrak Kim , Dong Wook Lee , Min Hwan Jung , Youkyong Seo
CPC分类号： G01N31/12 , G01N31/168 , H01M10/4285
摘要： A method for analysis of residual lithium compounds in a positive electrode active material for a lithium secondary battery comprises the steps of: analyzing a sample of a positive electrode active material using an oxygen/nitrogen/hydrogen analyzer (ONH analyzer) and a Karl Fischer analyzer to determine the amount of the H component; analyzing the sample using a carbon/sulfur analyzer (CS analyzer) to determine the amount of the C component and the S component; analyzing the sample using an inductively coupled plasma optical emission spectrometer (ICP-OES) to determine the amount of the Li component; and calculating the amount of each of LiOH, Li2CO3, and Li2SO4 in the sample using the quantification results of the H, C, and S components, and calculating the amount of Li2O in the sample using the quantification result of the Li component.
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公开(公告)号：US11860144B2
公开(公告)日：2024-01-02
申请号：US17464257
申请日：2021-09-01
摘要： The present disclosure relates to a measuring cell for carrying out chemical analyses, having a vessel, in which at least one liquid to be analyzed is located; a heating wire, which is guided at least partially around an outer wall of the vessel, so that the liquid inside the vessel can be heated in a uniform and controlled manner; and a first temperature sensor, which determines and/or monitors a first temperature of the liquid. The measuring cell furthermore comprises a magnetic stirrer with a stir bar and a cover for closing the vessel, wherein the cover has a plurality of ducts, wherein at least one first duct is provided for at least one first analysis sensor, which determines and/or monitors at least one chemical and/or physical variable of the liquid of the vessel and wherein at least one second duct is provided for a liquid line.
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公开(公告)号：US11454619B2
公开(公告)日：2022-09-27
申请号：US16378714
申请日：2019-04-09
申请人： Ecolab USA Inc.
摘要： Systems for quantifying one or more target analyte concentrations in a process solution are provided and can be used, for example, in methods for quantifying a target analyte concentration. These systems and methods include continuous and batchwise automated titration methods that use titration chemistries to measure the target analyte concentration in the process solution using a multiwavelength detector. The methods provide for efficient and robust automated titration methods for a variety of target analytes and can include methods that analyze more than one analyte and that provide for a dynamic range for measurement of more than one target analyte concentration.
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公开(公告)号：US10920336B2
公开(公告)日：2021-02-16
申请号：US16519973
申请日：2019-07-23
申请人： ECI Technology, Inc.
发明人： Vishal Parekh , Eugene Shalyt
摘要： The present disclosure relates to methods of monitoring the concentrations of silver ion and complexing agent in tin-silver (SnAg) electrodeposition solutions, and analysis and process control using such methods. Methods can include adding a precipitating agent to an electrodeposition solution including at least tin ions, silver ions, and complexing agent to cause a reaction between at least a portion of the precipitating agent and substantially all of the silver ions (to precipitate silver ions as a precipitant); adding a metallic salt to the electrodeposition solution to cause a reaction with substantially all of the remaining precipitating agent; measuring the endpoint of the silver ion back titration; further adding metallic salt to cause a further reaction with the complexing agent; and measuring the endpoint of the complexing agent titration.
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公开(公告)号：US20200378252A1
公开(公告)日：2020-12-03
申请号：US16613786
申请日：2018-12-27
发明人： Xiangnan Ye , Dale E. Jamison
摘要： Systems and methods for this disclosure describe systems and methods that are directed to monitoring active clay in water-based drilling fluid may be provided. A method for monitoring active clay concentration while drilling may be provided. The method may include providing a sample of water-based drilling fluid. The method may further include adding methylene blue to the sample in a methylene blue titration. The method may further include performing an impedance measurement on the sample during the methylene blue titration. The method may further include determining an endpoint of the methylene blue titration using a phase angle measurement from the impedance measurement. The method may further include correlating the endpoint to the active clay concentration of the sample. The method may further include determining a treatment for the water-based drilling fluid based on the active clay concentration.
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公开(公告)号：US10823645B2
公开(公告)日：2020-11-03
申请号：US16484105
申请日：2018-02-08
申请人： Essenlix Corporation
发明人： Stephen Y. Chou , Wei Ding , Yufan Zhang , Ji Qi
摘要： The present invention provides, among other things, devices, methods and applications of collecting, preserving, transporting, and analyzing tiny body fluids which have targeted biomarkers.
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公开(公告)号：US10809238B2
公开(公告)日：2020-10-20
申请号：US16059520
申请日：2018-08-09
申请人： Mettler-Toledo GmbH
发明人： Christian Forrer
摘要： An analytical device has an oven arrangement (1) with an oven (2), an insulation system, a ventilation system and a housing. The ventilation system has a first convection system that uses natural convection, arranged to keep the housing cool, as well as a second convection system that uses forced convection, arranged to reduce the temperature in the oven (2). In particular, the analytical device is a component of a Karl Fischer titration instrument.
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公开(公告)号：US20190317063A1
公开(公告)日：2019-10-17
申请号：US16385588
申请日：2019-04-16
申请人： Ecolab USA Inc.
发明人： Paul R. Kraus , Robert J. Ryther
摘要： Systems for quantifying a target analyte concentration in a process solution are provided and can be used, for example, in methods for quantifying a target analyte concentration. These systems and methods include continuous automated titration methods that use titration chemistries to measure the target analyte concentration in the process solution. The method steps provide for efficient and robust automated titration methods for a variety of target analytes and can include methods that provide for methods that provide a dynamic range for measurement of target analyte concentrations.
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公开(公告)号：US10018610B1
公开(公告)日：2018-07-10
申请号：US15438391
申请日：2017-02-21
CPC分类号： G01N33/18 , C02F1/00 , C02F2209/06 , C02F2209/07 , G01N31/166 , G01N33/1813
摘要： A method for determining the total alkalinity (TA) in a recirculating water system without adversely impacting the pH of the water includes the steps of selecting a pH threshold (ThpH), measuring the flow rate of the moving body of water (fS), controllably adding a known amount of acid to the recirculating water system at an acid flow rate (fA), repetitively measuring the pH of the recirculating water system downstream from the addition of the acid, and computing the total alkalinity of the recirculating water system when the pH measurement falls below the pH threshold.
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公开(公告)号：US20180002224A1
公开(公告)日：2018-01-04
申请号：US15541238
申请日：2015-12-30
申请人： CORNING INCORPORATED
摘要： Methods for increasing the hydrolytic resistance of a glass article are disclosed. According to one embodiment, the method includes providing a glass article with a pre-treatment hydrolytic titration value. Thereafter, the glass article is thermally treated at a treatment temperature greater than a temperature 200C less than a strain temperature of the glass article for a treatment time greater than or equal to about 0.25 hours such that, after thermally treating the glass article, the glass article has a post-treatment hydrolytic titration value that is less than the pre-treatment hydrolytic titration value.
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