Patents by Inventor Wenjuan Xu
Wenjuan Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8647443Abstract: A method of cleaning an automatic biochemical analyzer, wherein the cleaning solution includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.Type: GrantFiled: May 20, 2011Date of Patent: February 11, 2014Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Yuping Zhang, Mulong Liu, Wenjuan Xu, Jun Cheng
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Patent number: 8304243Abstract: A reagent for classification of leukocytes includes (a) at least two cationic surfactants; (b) at least one organic compound bearing a hydrophobic group and an anionic group; (c) a buffer for adjusting pH into a range of approximately 2-8. Also disclosed is a method for classifying leukocytes with the reagent. With the reagent and method, erythrocytes are lysed rapidly and classification of leukocytes into five groups is achieved in the same channel. The reaction may be carried out at approximately between 10-40° C. and scattered light signals may be detected at two angles for measuring the classification of leukocytes into five groups.Type: GrantFiled: March 23, 2012Date of Patent: November 6, 2012Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Bing Liu, Wenjuan Xu, Xiangping Meng, Yanmei Qiao, Mulong Liu
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Publication number: 20120183992Abstract: A reagent for classification of leukocytes includes (a) at least two cationic surfactants; (b) at least one organic compound bearing a hydrophobic group and an anionic group; (c) a buffer for adjusting pH into a range of approximately 2-8. Also disclosed is a method for classifying leukocytes with the reagent. With the reagent and method, erythrocytes are lysed rapidly and classification of leukocytes into five groups is achieved in the same channel. The reaction may be carried out at approximately between 10-40° C. and scattered light signals may be detected at two angles for measuring the classification of leukocytes into five groups.Type: ApplicationFiled: March 23, 2012Publication date: July 19, 2012Applicant: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Bing LIU, Wenjuan Xu, Xiangping Meng, Yanmei Qiao, Mulong Liu
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Patent number: 8163559Abstract: A reagent for four-part differentiation of white blood cells is provided. In one embodiment the reagent has an osmolality below 50 mOsm/kg H2O. A method for differentiating white blood cells using the reagent is also provided. The disclosure provides for a rapid lysis of red blood cells and four-part differentiation of white blood cells. The reagent may be simple in components and a surfactant is not necessary, but optional. A wide range of pH values may be suitable for the reagent.Type: GrantFiled: January 28, 2011Date of Patent: April 24, 2012Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Yanmei Qiao, Bing Liu, Xiangping Meng, Wenjuan Xu, Mulong Liu
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Patent number: 8143064Abstract: A reagent for classification of leukocytes includes (a) at least two cationic surfactants; (b) at least one organic compound bearing a hydrophobic group and an anionic group; (c) a buffer for adjusting pH into a range of approximately 2-8. Also disclosed is a method for classifying leukocytes with the reagent. With the reagent and method, erythrocytes are lysed rapidly and classification of leukocytes into five groups is achieved in the same channel. The reaction may be carried out at approximately between 10-40° C. and scattered light signals may be detected at two angles for measuring the classification of leukocytes into five groups.Type: GrantFiled: November 5, 2008Date of Patent: March 27, 2012Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Bing Liu, Wenjuan Xu, Xiangping Meng, Yanmei Qiao, Mulong Liu
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Patent number: 8108519Abstract: Techniques for Inter-Process Communication (IPC) in a more secure manner are disclosed. A communication component operating outside of an operating system can obtain operating-system data pertaining to processes that also operate outside of the operating system. The operating-system data can be more reliable than information that may have been provided by the processes, thereby allowing more secure IPC and consequently a more secure computing environment and/or system. A communication component can also be operable to make control decisions regarding the IPC data (e.g., IPC messages) based on the information provided and/or originated by the operating system (or operating-system data) and/or effectively provide the operating-system data pertaining to a sender process to its intended recipient process. A recipient process can also be operable to obtain the operating-system data pertaining to a sender process.Type: GrantFiled: February 2, 2009Date of Patent: January 31, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Xinwen Zhang, Wenjuan Xu, Onur Aciicmez, Jean-Pierre Seifert
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Publication number: 20110224116Abstract: A method of cleaning an automatic biochemical analyzer, wherein the cleaning solution includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.Type: ApplicationFiled: May 20, 2011Publication date: September 15, 2011Applicant: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Yuping Zhang, Mulong Liu, Wenjuan Xu, Jun Cheng
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Patent number: 8003586Abstract: A cleaning solution for automatic biochemical analyzers includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.Type: GrantFiled: October 21, 2008Date of Patent: August 23, 2011Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Yuping Zhang, Mulong Liu, Wenjuan Xu, Jun Cheng
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Publication number: 20110151562Abstract: A reagent for four-part differentiation of white blood cells is provided. In one embodiment the reagent has an osmolality below 50 mOsm/kg H2O. A method for differentiating white blood cells using the reagent is also provided. The disclosure provides for a rapid lysis of red blood cells and four-part differentiation of white blood cells. The reagent may be simple in components and a surfactant is not necessary, but optional. A wide range of pH values may be suitable for the reagent.Type: ApplicationFiled: January 28, 2011Publication date: June 23, 2011Applicant: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.Inventors: Yanmei Qiao, Bing Liu, Xiangping Meng, Wenjuan Xu, Mulong Liu
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Publication number: 20100121927Abstract: Techniques for Inter-Process Communication (IPC) in a more secure manner are disclosed. A communication component operating outside of an operating system can obtain operating-system data pertaining to processes that also operate outside of the operating system. The operating-system data can be more reliable than information that may have been provided by the processes, thereby allowing more secure IPC and consequently a more secure computing environment and/or system. A communication component can also be operable to make control decisions regarding the IPC data (e.g., IPC messages) based on the information provided and/or originated by the operating system (or operating-system data) and/or effectively provide the operating-system data pertaining to a sender process to its intended recipient process. A recipient process can also be operable to obtain the operating-system data pertaining to a sender process.Type: ApplicationFiled: February 2, 2009Publication date: May 13, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Xinwen Zhang, Wenjuan Xu, Onur Aciicmez, Jean-Pierre Seifert
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Publication number: 20090170740Abstract: A cleaning solution for automatic biochemical analyzers includes: at least one anionic surfactant, at least one nonionic surfactant, an alkali metal hydroxide, an alkali metal citrate, and a buffering agent stabilizing the pH value above 13.0. In some embodiments, the cleaning solution provides low residual rate of proteins, low residual rate of lipids, desirable within-batch repeatability in clinical testing, low level of cross-contamination, and low level of reactant deposit after cleaning, without affecting test results of the biochemical analyzer. In some embodiments, the cleaning solution has no corrosive effects on the liquid path and reaction cup of the analyzer. The ingredients of the cleaning solution may also be biodegradable.Type: ApplicationFiled: October 21, 2008Publication date: July 2, 2009Applicant: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Inventors: Yuping ZHANG, Mulong LIU, Wenjuan XU, Jun CHENG
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Publication number: 20090162830Abstract: A reagent for classification of leukocytes includes (a) at least two cationic surfactants; (b) at least one organic compound bearing a hydrophobic group and an anionic group; (c) a buffer for adjusting pH into a range of approximately 2-8. Also disclosed is a method for classifying leukocytes with the reagent. With the reagent and method, erythrocytes are lysed rapidly and classification of leukocytes into five groups is achieved in the same channel. The reaction may be carried out at approximately between 10-40° C. and scattered light signals may be detected at two angles for measuring the classification of leukocytes into five groups.Type: ApplicationFiled: November 5, 2008Publication date: June 25, 2009Applicant: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.Inventors: Bing LIU, Wenjuan XU, Xiangping MENG, Yanmei QIAO, Mulong LIU
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Publication number: 20090155764Abstract: A reagent for four-part differentiation of white blood cells is provided. In one embodiment the reagent has an osmolarity below 50 mOsm/kg H2O. A method for differentiating white blood cells using the reagent is also provided. The disclosure provides for a rapid lysis of red blood cells and four-part differentiation of white blood cells. The reagent may be simple in components and a surfactant is not necessary, but optional. A wide range of pH values may be suitable for the reagent.Type: ApplicationFiled: December 17, 2008Publication date: June 18, 2009Applicant: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.Inventors: Yanmei Qiao, Bing Liu, Xiangping Meng, Wenjuan Xu, Mulong Liu
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Publication number: 20090142797Abstract: Blood diluent for use in the analysis of blood components may include at least one purine compound or salt thereof. The blood diluent may also include at least one of alkali metal salt and/or at least one organic buffers and/or inorganic buffer. The blood diluent may be utilized to stabilize blood cells during storage and facilitate the analysis thereof.Type: ApplicationFiled: December 28, 2007Publication date: June 4, 2009Applicant: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.Inventors: Lina Zhang, Dan Liu, Wenjuan Xu, Mulong Liu
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Patent number: 7416891Abstract: A reagent for classifying leucocytes, including: a) at least one of surfactant selected from a cationic surfactant, an amphoteric surfactant, and the combination thereof; b) an organic compound having phenyl or heterocyclic group, wherein when the surfactant is a cationic surfactant, the organic compound is an organic compound having an anionic group; when the surfactant is an amphoteric surfactant or a combination of amphotheric and cationic surfactant, the organic compound is an organic compound having an anionic or cationic group; c) a buffer for adjusting pH.Type: GrantFiled: September 7, 2006Date of Patent: August 26, 2008Assignee: Shenzhen Mindray Bio-Medical Electronics Co., LtdInventors: Wenjuan Xu, Mulong Liu
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Patent number: 7413905Abstract: The present invention relates to a reagent for classifying leukocytes including (a) at least one surfactant capable of lysing erythrocytes and partly damaging the cell membrane of leukocytes, (b) at least one organic compound bearing an anionic group capable of binding to the cationic component present in the leukocytes to provide morphological differences between the leukocytes, and (c) a buffer for adjusting pH to 2˜8. Also disclosed is a method for classifying leukocytes into four groups.Type: GrantFiled: September 7, 2006Date of Patent: August 19, 2008Assignee: Shenzhen Mindray Biomedical Electronics Co., Ltd.Inventors: Wenjuan Xu, Lina Zhang, Bing Liu
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Publication number: 20070275469Abstract: The present invention relates to a reagent for classifying leukocytes comprising (a) at least one surfactant capable of lysing erythrocytes and partly damaging the cell membrane of leukocytes, (b) at least one organic compound bearing an anionic group capable of binding to the cationic component present in the leukocytes to provide morphological differences between the leukocytes, (c) a buffer for adjusting pH to 2-8. Also disclosed is a method for classifying leukocytes into four groups.Type: ApplicationFiled: September 7, 2006Publication date: November 29, 2007Inventors: Wenjuan Xu, Lina Zhang, Bing Liu
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Publication number: 20070269896Abstract: A reagent for classifying leucocytes including: a) at least one of surfactant selected from a cationic surfactant, an amphoteric surfactant, and the combination thereof; b) an organic compound having phenyl or heterocyclic group, wherein when the surfactant is a cationic surfactant, the organic compound is an organic compound having an anionic group; when the surfactant is an amphoteric surfactant or a combination of amphotheric and cationic surfactant, the organic compound is an organic compound having an anionic or cationic group; c) a buffer for adjusting pH.Type: ApplicationFiled: September 7, 2006Publication date: November 22, 2007Inventors: Wenjuan Xu, Mulong Liu