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...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.

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Class 436/824 - IMMUNOLOGICAL SEPARATION TECHNIQUES


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Art collection relating to the use of an antigen, antibody
No. of patents: 359
Last issue date: 07/22/2008


1                  
NumberTitleIssue Date
7402398Measuring receptor homodimerization
The invention provides methods and kits for detecting and/or measuring receptor homodimers on a cell surface membrane. In one aspect, the methods employ pairs of probes comprising binding compounds and a cleaving probe, such that at least one binding compound binds ...
07/22/2008
7402397Detecting and profiling molecular complexes
Methods are provided for detecting the formation of complexes of molecules, especially proteins, in a sample, such as a cell or tissue lysate. In one aspect, a cleaving probe specific for a first protein in a complex and one or more binding compounds specific for on...
07/22/2008
7371584Multi-functional and configurable assay
Novel magnetic assay methods and systems. According to a preferred embodiment, a chromatographic medium is provided that is designed to be contacted with a test solution having activated magnetic particles such that the solution flows bilaterally thereacross. A magn...
05/13/2008
7368277Method for assay of antibodies and antibody assay device
The invention relates to a technology by which antibodies directed to sources of infection in body fluids can be assayed with high accuracy, expediency and specificity. More particularly, the invention provides an antibody immunoassay method in which the antigen-ant...
05/06/2008
7364921Method and apparatus for separating biological materials and other substances
A method for separating biological materials and other substances is disclosed, wherein a mixture containing desired and undesired components are exposed to magnetic particles having ligands capable of binding to the desired and/or the undesired components to form a...
04/29/2008
7358096Immobilisation of proteins
The immobilization of proteins at solid surfaces facilitated by incorporation of a polypeptide segment which is capable of adopting a folded structure is described. Materials comprising proteins so immobilized and uses thereof are also described. ...
04/15/2008
7316932Method for separating cells
The present invention is related to a method for separating a first population of cells from a second population of cells in a sample by discontinuous density gradient separation using dense particles to target the first population of cells and a density separation ...
01/08/2008
7285424Membrane-based assay devices
A membrane-based assay device for detecting the presence or quantity of an analyte residing in a test sample is provided. The device utilizes a self-calibrated magnetic binding assay format (e.g., sandwich, competitive, etc.) that includes detection probes capable o...
10/23/2007
7252961Competitive immunoassay using complexed analyte derivatives
The invention relates to a method for the detection of an analyte in a competitive immunoassay in the presence of an analyte derivative and first and second receptor molecules, and to a kit for carrying out this detection method. ...
08/07/2007
7223546Method for measuring the amount of constituent contained in a specific lipoprotein
There is provided a method and kit for measuring the amount of an objective constituent contained in a specific lipoprotein in a biological sample such as serum and plasma, specifically for measuring the amount of cholesterol contained in high density lipoprotein, w...
05/29/2007
7205157Method of separating cells from a sample
Rare cells are separated from a sample fluid by a positive selection or negative selection antibody by centrifuging in a tube containing a harvesting float. The harvesting float has an axial passage and a density to settle in the sample fluid and expand the layer of...
04/17/2007
7183119Method for sensitive detection of multiple biological analytes
The present invention relates to a method of detecting biological analytes comprising suspending a target analyte in a suspending solution containing polymeric particles marked with a probe, wherein the probe has an affinity for said target analyte; adding recogniti...
02/27/2007
7166423Direct selection of cells by secretion product
Cells can be labeled with products which they secrete and release in an efficient manner by coupling the cells at their surface to a specific binding partner for the product and allowing the product to be captured by the specific binding partner as it is secreted an...
01/23/2007
7160735Tagged microparticle compositions and methods
Compositions and methods are disclosed for detecting multiple target analytes in a sample using microparticles having molecular tags attached by cleavable linkages. Generally, an assay mixture is formed comprising a sample and a reagent comprising multiple such micr...
01/09/2007
7122382Method for detecting proteins under mutual interaction
A method for detecting proteins under mutual interaction which comprises mixing a protein having a label for detection synthesized by a cell-free protein synthesis method with another protein having a modification for separation, or synthesizing a protein having a l...
10/17/2006
7108985Methods and kits useful for the simplification of complex peptide mixtures
Methods and reagents for obtaining simplified mixtures of peptides from a sample containing a number of peptides are disclosed. The simplified sample can be easier to analyze than the original peptide sample yet it is representative of all or nearly all of the prote...
09/19/2006
7074622Method and system for sorting and separating particles
The present invention relates to a method of particle separation comprising preparing a suspension of particles containing at least one recognizable target particle in a suspending solution, labeling the target particle with a conjugate marker, wherein the conjugate...
07/11/2006
7064191Process for purifying antibody
The present invention relates to a process for purifying an antibody having a desired property, which comprises using a substance having an affinity to a carbohydrate binding to the antibody; a medicament comprising, as an active ingredient, the antibody purified by...
06/20/2006
7056657Apparatus and methods for magnetic separation
Separation apparatus and method for separating magnetic and/or magnetically-labeled particles from a test medium. Test medium within a reaction chamber is caused to flow past a collecting surface, and a high-gradient magnetic field is applied to the surface t...
06/06/2006
7045363Nucleic acid-bound polypeptide method of producing nucleic acid-bound polypeptide and immunoassay using the polypeptide
A nucleic acid-bound polypeptide produced by binding a nucleic acid to a polypeptide, a method of producing the nucleic acid-bound polypeptide, and applications of the nucleic acid-bound polypeptide, including immunoassays for an antigen or antibody, such as an aggl...
05/16/2006
7022491Method for determining molecule—molecule interaction analysis
The invention relates to a method for monitoring interactions to a target biomolecule comprising the steps of: providing a biomolecule of interest having specificity for the target biomolecule; binding the biomolecule of interest to at least one type of linker molec...
04/04/2006
7001775Assays for autoantibodies
A method and kit for screening a sample of body fluid for at least one autoantibody to at least one antigen. A source of at least one antigen to the autoantibody is provided. A substrate having immobilized thereto at least one antibody to the antigen is also provide...
02/21/2006
6991912Systems and methods for performing magnetic chromatography assays
Novel magnetic assay methods and systems. According to a preferred embodiment, a chromatographic medium, which preferably comprises a test strip, is provided that is designed to be contacted with a test solution having activated magnetic particles such that the solu...
01/31/2006
6972327Regeneration of chromatography material
The invention provides improved methods of regenerating and using affinity chromatography material, in particular Protein A affinity chromatography resins. ...
12/06/2005
6939681Method of detecting an antibody in a liquid sample
The invention relates to a method of evaluating the immunological status of a subject comprising the steps of 1) determining the content of an antibody in a liquid sample from the subject using an immunoassay, wherein the reaction between the antibody of the sample ...
09/06/2005
6932969Ig fractions having immunomodulatory activity
The invention concerns a method for preparing Ig fractions from human polyvalent intravenous Immunoglobulins (IV Ig) which are in particular likely to be responsible for the immunomodulatory effect observed during the treatment of certain autoimmune diseases. The in...
08/23/2005
6933109Rapid particle detection
Methods and reagents for rapid purification and/or identification of particles in a liquid sample are described. The technique uses centrifugation to concentrate particles against a slanted surface having an agent specifically binding to the particles. This method i...
08/23/2005
6900023Method for classifying and counting leukocytes
A method for classifying and counting leukocytes comprises the steps of: (1) adding to a hematological sample the following fluorescence-labeled antibodies labeled with fluorescent dyes which emit fluorescences distinguishable from each other; (a) a first fluorescen...
05/31/2005
6893832Method for quantifying cholesterol in high density lipoprotein
Disclosed is a method for quantifying cholesterol in HDL, which does not require complex fragmentation and separation operations, and by which the HDL cholesterol in test samples containing HDL and other lipoproteins such as low density lipoprotein (LDL), very low d...
05/17/2005
6893881Method for detection of specific target cells in specialized or mixed cell population and solutions containing mixed cell populations
The invention relates to a method for detecting specific target-cells in a simple and time saving way, using paramagnetic particles, antibodies recognizing the Fc portions of target-cell associating antibodies and target-cell associating antibodies directed to speci...
05/17/2005
6870034Protein purification
A method for purifying proteins by Protein A chromatography is described which comprises removing contaminants by washing the solid phase with various intermediate wash buffers. ...
03/22/2005
6866846Patient-specific immunoadsorbers for the extracorporeal apheresis and methods for their preparation
A process for preparing a patient-specific immunoadsorber, which comprises (i) extracting a body fluid from a patient having an immunopathological condition, the fluid containing immune complexes that are relevant to that immunopathological condition, (ii) contactin...
03/15/2005
6828157Products and methods for single parameter and multiparameter phenotyping of cells
A method of single parameter and multiparameter characterizing of cells, particularly immunophenotyping of cells, is provided. The method preferably uses antibody coated microspheres which are adapted to bind to specific types of cells. One or more sets of coated mi...
12/07/2004
6811969Retentate chromatography—profiling with biospecific interaction adsorbents
This invention provides methods of retentate chromatography for resolving analytes in a sample. The methods involve adsorbing the analytes to a substrate under a plurality of different selectivity conditions, and detecting the analytes retained on the substrate by d...
11/02/2004
6797814Protein purification
A method for purifying proteins by Protein A chromatography is described which comprises the steps of: (a) adsorbing the protein to Protein A immobilized on a solid phase comprising silica or glass; (b) removing contaminants bound to the solid phase by washing the s...
09/28/2004
6794153Helicobacter pylori antigens in blood
The present invention relates to the finding and detection of Helicobacter pylori (H. pylori) antigens in blood of infected individuals. The H. pylori antigens are components of H. pylori cells which include, but not limited to DNA, RNA, ...
09/21/2004
6770490Membrane immunobead assay for the detection of ciguatoxin and related polyether marine toxins
An immunological test kit suitable for the rapid detection of ciguatoxin and related low molecular weight lipid polyether marine toxins in fish tissues in the field, home or laboratory. The test procedure utilizes a synthetic membrane laminated onto one end of a sol...
08/03/2004
6764860Ultrasonic force differentiation assay
An ultrasonic energy source is used to provide a variable force for measuring the binding forces between molecular entities and for sensing the presence of an analyte in a test sample. The device includes a surface that has a first binding member attached thereto an...
07/20/2004
6762062Method of determining cholesterol and sensor applicable to the same
The present disclosure relates to a method for determining cholesterol in low density lipoprotein comprising the steps of (a) measuring total cholesterol level in a sample containing at least high density lipoprotein, low density lipoprotein, very low density lipopr...
07/13/2004
6753189Detection apparatus and method for the same
A catcher, having an immunological epitope, is fixed to a detection zone of a spreading layer. A marker, capable of easy detection, has an inmmunological epitope. The marker and bispecific antibodies are soluble so that they can move on the spreading layer. The bisp...
06/22/2004
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