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1. 发明授权

US08923508B2 Half-duplex speakerphone echo canceler 有权
标题翻译：半双工扬声器回声消除器
公开(公告)号：US08923508B2
公开(公告)日：2014-12-30
申请号：US13490596
申请日：2012-06-07
申请人： Donald R. Laturell , Kannan Srinivasan , Chao-pin Chen
发明人： Donald R. Laturell , Kannan Srinivasan , Chao-pin Chen
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： A speakerphone having transmit path with a microphone and a first amplifier having a gain determined by a controller and an input coupled to the microphone, a receive path with a second amplifier having a gain determined by the controller and a speaker coupled to an output of the second amplifier, and operable in a half-duplex mode using an adaptive echo canceller to at least partially remove from the transmit path acoustically-coupled signals from the receive path. The controller increases the gain of the first amplifier and decreases the gain of the second amplifier when a level of signals in the transmit path exceed a level of signals in the receive path, and decreases the gain of the first amplifier and increases the gain of the second amplifier when the level of signals in the receive path exceed the level of signals in the transmit path.
摘要翻译：具有麦克风的发送路径的扬声器和具有由控制器确定的增益和耦合到麦克风的输入的第一放大器，具有由控制器确定的增益的第二放大器的接收路径和耦合到该麦克风的输出的扬声器第二放大器，并且可以使用自适应回波消除器以半双工模式操作以至少部分地从发送路径去除来自接收路径的声耦合信号。当发射路径中的信号电平超过接收路径中的信号电平时，控制器增加第一放大器的增益并降低第二放大器的增益，并且降低第一放大器的增益并增加第第二放大器当接收路径中的信号电平超过发送路径中的信号电平时。

2. 发明申请

US20130329882A1 Half-Duplex Speakerphone Echo Canceler 有权
标题翻译：半双工免提回声消除器
公开(公告)号：US20130329882A1
公开(公告)日：2013-12-12
申请号：US13490596
申请日：2012-06-07
申请人： Donald R. Laturell , Kannan Srinivasan , Chao-pin Chin
发明人： Donald R. Laturell , Kannan Srinivasan , Chao-pin Chin
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： A speakerphone having transmit path with a microphone and a first amplifier having a gain determined by a controller and an input coupled to the microphone, a receive path with a second amplifier having a gain determined by the controller and a speaker coupled to an output of the second amplifier, and operable in a half-duplex mode using an adaptive echo canceller to at least partially remove from the transmit path acoustically-coupled signals from the receive path. The controller increases the gain of the first amplifier and decreases the gain of the second amplifier when a level of signals in the transmit path exceed a level of signals in the receive path, and decreases the gain of the first amplifier and increases the gain of the second amplifier when the level of signals in the receive path exceed the level of signals in the transmit path.
摘要翻译：具有麦克风的发送路径的扬声器和具有由控制器确定的增益和耦合到麦克风的输入的第一放大器，具有由控制器确定的增益的第二放大器的接收路径和耦合到该麦克风的输出的扬声器第二放大器，并且可以使用自适应回波消除器以半双工模式操作以至少部分地从发送路径去除来自接收路径的声耦合信号。当发射路径中的信号电平超过接收路径中的信号电平时，控制器增加第一放大器的增益并降低第二放大器的增益，并且降低第一放大器的增益并增加第第二放大器当接收路径中的信号电平超过发送路径中的信号电平时。

3. 发明授权

US09914651B2 Current efficient electrolytic device and method 有权
公开(公告)号：US09914651B2
公开(公告)日：2018-03-13
申请号：US13890029
申请日：2013-05-08
申请人： Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Rong Lin
发明人： Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Rong Lin
IPC分类号： C02F1/00 , C02F1/34 , C02F1/48 , C02F1/469 , G01N30/56 , G01N30/96 , B01J39/26 , B01J41/20 , B01J47/12 , B01J49/30 , B01D15/00 , B01D15/08 , B01J47/08
CPC分类号： C02F1/4695 , B01J39/26 , B01J41/20 , B01J47/12 , B01J49/30 , G01N30/56 , G01N30/96 , G01N2030/562 , G01N2030/965
摘要： A sandwich suppressor in an ion chromatography system in which loosely packed ion exchange resin of low density is disposed in the central sample stream flow channel. Also, a method of using the suppressor is described.

4. 发明授权

US09459184B2 Sorption of water from a sample using a polymeric drying agent 有权
标题翻译：使用聚合物干燥剂从样品中吸收水分
公开(公告)号：US09459184B2
公开(公告)日：2016-10-04
申请号：US13415373
申请日：2012-03-08
申请人： Christopher A. Pohl , Kannan Srinivasan , S M Rahmat Ullah
发明人： Christopher A. Pohl , Kannan Srinivasan , S M Rahmat Ullah
IPC分类号： G01N1/34 , G01N1/40 , G01N1/10 , C08F220/34 , C08F228/02 , C08F220/06 , B01D11/04 , C08F222/10
CPC分类号： G01N1/405 , B01D11/04 , B01D11/0492 , B01J20/261 , C08F220/06 , C08F220/34 , C08F222/1006 , C08F228/02 , G01N1/10 , G01N1/34 , G01N1/4055 , G01N2001/4061
摘要： A method of extracting an analyte from a sample is described where the sample includes water. The sample and polymeric drying agent are added to a container. The polymeric drying agent includes a cationic monomer, an anionic monomer, and a crosslinker. The polymeric drying agent is configured to sorb water from the sample.
摘要翻译：描述了从样品中提取分析物的方法，其中样品包括水。将样品和聚合物干燥剂加入到容器中。聚合物干燥剂包括阳离子单体，阴离子单体和交联剂。聚合物干燥剂构造成从样品中吸收水分。

5. 发明授权

US08802010B2 Ion chromatography systems with flow-delay eluent recycle 有权
公开(公告)号：US08802010B2
公开(公告)日：2014-08-12
申请号：US13905516
申请日：2013-05-30
申请人： Yan Liu , Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Zhongqing Lu
发明人： Yan Liu , Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Zhongqing Lu
IPC分类号： G01N30/02 , G01N30/26 , G01N30/96
CPC分类号： B01D15/10 , G01N30/26 , G01N30/96 , G01N2030/965
摘要： A chromatographic method including chromatographically separating sample ionic species in an eluent stream, detecting the separated sample ionic species, catalytically combining hydrogen and oxygen gases or catalytically decomposing hydrogen peroxide in a catalytic gas elimination chamber, and recycling the effluent stream from the chamber to the chromatography separation column. The residence time between the detector and the chamber is at least about one minute. Also, flowing the recycle sequentially through two detector effluent flow channels of an electrolytic membrane suppressor. Also, applying heat or UV energy between the detector and the chamber. Also, detecting bubbles after the chamber. Also, a Platinum group metal catalyst and ion exchange medium in the chamber. Apparatus for performing the methods.

6. 发明授权

US08771517B2 IC system including sample pretreatment and using a single pump 有权
标题翻译： IC系统包括样品预处理和使用单个泵
公开(公告)号：US08771517B2
公开(公告)日：2014-07-08
申请号：US12702880
申请日：2010-02-09
申请人： Kannan Srinivasan , Rong Lin
发明人： Kannan Srinivasan , Rong Lin
IPC分类号： B01D15/08
CPC分类号： G01N30/96 , G01N2030/085
摘要： An IC system including sample preparation. The system includes a liquid sample injection loop, an ion concentrator, an ion separator, and only a single pump for pumping fluid through the system.
摘要翻译：包括样品制备的IC系统。该系统包括液体样品注射回路，离子浓缩器，离子分离器，以及仅用于泵送流体通过系统的单个泵。

7. 发明授权

US08636963B2 Chemical suppressors and method of use 有权
标题翻译：化学抑制剂及其使用方法
公开(公告)号：US08636963B2
公开(公告)日：2014-01-28
申请号：US13368663
申请日：2012-02-08
申请人： Kannan Srinivasan , Christopher A. Pohl
发明人： Kannan Srinivasan , Christopher A. Pohl
IPC分类号： G01N30/84
CPC分类号： G01N30/96 , B01D15/367 , B01D61/48 , Y10T436/25
摘要： A non-electrolytic method and apparatus for treating an aqueous sample stream including analyte ions and matrix ions of opposite charge, for pretreatment or suppression. The apparatus includes an ion exchange membrane capable of passing only ions of opposite charge to the analyte ions, a sample stream flow channel, a first aqueous stream ion receiving flow channel adjacent one side of the sample stream flow channel and separated therefrom by the first ion exchange membrane, and stationary flow-through ion exchange packing disposed in the sample stream flow channel. The ion receiving channel has an ion exchange capacity for the matrix ions less than about 25% of the ion exchange capacity for the matrix ions.
摘要翻译：一种用于处理包含分析物离子和相反电荷的基质离子的水样品流的非电解方法和装置，用于预处理或抑制。该装置包括能够仅将相反电荷的离子通过到分析物离子的离子交换膜，样品流流动通道，邻近样品流流动通道的一侧的第一含水流离子接收流动通道，并由第一离子交换膜和设置在样品流流动通道中的固定流通离子交换填料。离子接收通道对于基质离子的离子交换容量小于基质离子的离子交换容量的约25％。

8. 发明申请

US20130331587A1 Process For The Preparation Of Fatty Acid Alkyl Esters (Biodiesel) From Triglyceride Oils Using Eco-Friendly Solid Base Catalysts 有权
标题翻译：使用环保型固体碱催化剂从甘油三酯油制备脂肪酸烷基酯（生物柴油）的方法
公开(公告)号：US20130331587A1
公开(公告)日：2013-12-12
申请号：US13985443
申请日：2012-02-10
申请人： Kannan Srinivasan , Sivashunmugam Sankaranarayanan , Churchil Angel Antonyraj
发明人： Kannan Srinivasan , Sivashunmugam Sankaranarayanan , Churchil Angel Antonyraj
IPC分类号： C07C67/03
CPC分类号： C07C67/03 , C10G2300/1014 , C10L1/026 , C11C3/003 , Y02E50/13 , Y02P30/20 , C07C69/52
摘要： This invention relates to an improved process for the preparation of green fatty acid methyl esters (FAME; commonly called as biodiesel) from different triglyceride oils using mixed metal oxides derived from layered double hydroxides (referred here as LDHs) as reusable solid heterogeneous base catalysts. This process uses very low alcohohoil molar ratio and catalyst and/or products are easily separable after the reaction through simple physical processes. The properties of thus obtained biodiesel meet the standard biodiesel values and can directly be used as transport fuel.
摘要翻译：本发明涉及使用衍生自层状双氢氧化物（称为LDH）的混合金属氧化物作为可重复使用的固体异质碱催化剂制备来自不同甘油三酯油的绿色脂肪酸甲酯（FAME;通常称为生物柴油）的改进方法。该方法使用非常低的alhohohoil摩尔比，催化剂和/或产物通过简单的物理过程在反应后容易分离。由此获得的生物柴油的性能符合标准生物柴油价值，可以直接用作运输燃料。

9. 发明授权

US08551318B2 Ion detector and system 有权
标题翻译：离子探测器和系统
公开(公告)号：US08551318B2
公开(公告)日：2013-10-08
申请号：US13237776
申请日：2011-09-20
申请人： Purnendu K. Dasgupta , Bingcheng Yang , Kannan Srinivasan
发明人： Purnendu K. Dasgupta , Bingcheng Yang , Kannan Srinivasan
IPC分类号： C25B1/04 , G01F1/64 , B01D15/08 , B01D57/00
CPC分类号： G01N30/96 , G01N30/64 , Y02E60/366
摘要： Apparatus and method for detecting current or potential generated in a liquid sample suitable for use in a chromatography or other liquid sample analytical system. One embodiment is an electrolytic ion transfer device with a signal detector in communication with the electrodes of the transfer device. Another is a combination ion transfer device/electrolyte generator. Another substitutes a detector for the ion transfer device in the combination.
摘要翻译：用于检测适用于色谱法或其他液体样品分析系统的液体样品中产生的电流或电位的装置和方法。一个实施例是具有与传送装置的电极连通的信号检测器的电解离子传递装置。另一种是离子转移装置/电解质发生器的组合。另外用组合的方式代替离子转移装置的检测器。

10. 发明授权

US08465982B2 Ion chromatography systems with flow-delay eluent recycle 有权
公开(公告)号：US08465982B2
公开(公告)日：2013-06-18
申请号：US13075009
申请日：2011-03-29
申请人： Yan Liu , Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Zhongqing Lu
发明人： Yan Liu , Kannan Srinivasan , Christopher A. Pohl , Sheetal Bhardwaj , Zhongqing Lu
IPC分类号： G01N30/02
CPC分类号： B01D15/10 , G01N30/26 , G01N30/96 , G01N2030/965
摘要： A chromatographic method including chromatographically separating sample ionic species in an eluent stream, detecting the separated sample ionic species, catalytically combining hydrogen and oxygen gases or catalytically decomposing hydrogen peroxide in a catalytic gas elimination chamber, and recycling the effluent stream from the chamber to the chromatography separation column. The residence time between the detector and the chamber is at least about one minute. Also, flowing the recycle sequentially through two detector effluent flow channels of an electrolytic membrane suppressor. Also, applying heat or UV energy between the detector and the chamber. Also, detecting bubbles after the chamber. Also, a Platinum group metal catalyst and ion exchange medium in the chamber. Apparatus for performing the methods.

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