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Class 436/529 - Polysaccharide, carrier (e.g., dextran, etc.)


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Subject matter in which the carrier is a polysaccharide.
No. of patents: 450
Last issue date: 02/10/2009


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NumberTitleIssue Date
7488608Reduction of non-specific binding in assays
Methods and compositions are disclosed for reducing non-specific binding in a binding assay for the determination of an analyte in a sample where one of the reagents for conducting the binding assay comprises a solid support comprising a polysaccharide. The method c...
02/10/2009
7485472Simple method for quantitative measuring the adhesion of platelets ex vivo
The invention relates to measuring of the adhesion of platelets ex vivo. In this method, monodisperse polymer particles are added to blood, and the number of platelets in the blood are measured before and after shaking of the sample. The level of adhesion of the pla...
02/03/2009
7439080Method for determining the glucose concentration by fluorescence polarization
The invention generally relates to a method for in vivo glucose monitoring in which the glucose concentration is measured by means of fluorescence polarization by detecting the change in viscosity, caused by changes in the glucose concentration. ...
10/21/2008
7423155N-sulfonyldicarboximide containing tethering compounds
Compounds having two reactive functional groups are described that can be used as a tethering compound to immobilize an amine-containing material to a substrate. The first reactive functional group can be used to provide attachment to a surface of a substrate. The s...
09/09/2008
7402381Method of immobilizing molecules onto a solid phase substrate and method of fabricating a biosensor using the method
Aspects of the invention can provide a method capable of easily realizing immobilization with the optimum density derived from a concentration control and without phase separation in coadsorption of a number of molecules. The immobilization method can include the st...
07/22/2008
7390677Immunoassay and immunoassay apparatus
An immunoassay comprises the steps of: (a) mixing a whole blood sample with sensitized insoluble carrier particles smaller than erythrocytes to cause an immune agglutination reaction; (b) introducing the resulting immune agglutination reaction mixture including aggl...
06/24/2008
7390674Lateral flow devices using reactive chemistry
There is provided a lateral flow assay device for detecting the presence or quantity of an analyte residing in a test sample where the lateral flow assay device has a porous membrane in communication with a wicking pad. The porous membrane has a detection zone which...
06/24/2008
7368281Label-free evanescent-field detection of biological and chemical agents
An evanescent-field sensor system and method of using the system to detect either liquid- or airborne biological pathogens, chemical agents, and other harmful or toxic species is provided. The sensor system involves 1) an evanescent-field sensor having a substrate s...
05/06/2008
7368280Detection of biospecific interactions using amplified differential time domain spectroscopy signal
A method for detecting specific associations between a tethered molecule and an untethered target molecule. The method comprises (1) selecting a tethered molecule; (2) alternately impinging THz radiation onto the tethered molecule and onto a sample including the tet...
05/06/2008
7364898Customized micro-array construction and its use for target molecule detection
The present invention relates to a detection and quantification method of different sets of target molecules (1, 3), being possibly present simultaneously in a biological sample by the use of a microarray present upon a solid support surface (6) and co...
04/29/2008
7354733Method for sorting and separating living cells
We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a...
04/08/2008
7351838N-sulfonyldicarboximide containing tethering compounds
Compounds having two reactive functional groups are described that can be used as a tethering compound to immobilize an amine-containing material to a substrate. The first reactive functional group can be used to provide attachment to a surface of a substrate. The s...
04/01/2008
7329484Retentate chromatography and protein chip arrays with applications in biology and medicine
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...
02/12/2008
7300633Specimen collection container
The present invention recognizes that sample handling devices, particularly those used for testing for substances of abuse, do not allow for a separation of the bulk sample from a sample thereof to be tested. The present invention provides such a device and methods ...
11/27/2007
7300800Analyte detection system
An analyte detection system utilizing a combination of fluorescent labels for labeling particles and an analyte specific fluorescent analyte detection dye. The particles contain a combination of fluorescent labels for coding the particles and an analyte specific flu...
11/27/2007
7288416Ionic polymers and polymer-comprising substrates
An objective of the present invention is to provide ionic polymers that can provide for polymer-comprising substrates whose surfaces can stably and easily immobilize ligands such as sugar chains interacting with biological substances, in which the ligand portion exi...
10/30/2007
7279323Method for conducting receptor-ligand association reaction and reactor used therefor
A method for conducting a receptor-ligand association reaction includes the steps of dipping a biochemical analysis unit including a substrate formed with a plurality of absorptive regions which contain receptors or ligands and are formed to be spaced apart from eac...
10/09/2007
7270959Specimen collection container
The present invention recognizes that sample handling devices, particularly those used for testing for substances of abuse, do not allow for a separation of the bulk sample from a sample thereof to be tested. The present invention provides such a device and methods ...
09/18/2007
7271008Quality control of assays
The invention relates to a device and methods for determining the quality of reagents used in an assay process, particularly a multistep immunohistochemical assay. In particular, the device comprises a substrate with a plurality of compounds affixed to a substrate, ...
09/18/2007
7267993Phage ligand sensor devices and uses thereof
Methods and compositions for identifying and characterizing one or more ligands of a peptide are provided. In particular, the invention provides a phage ligand sensor device (PLSD) comprising a sensor coupled to a binding element of interest. Binding elements of int...
09/11/2007
7256054Core-shell metal particles coated with dextran or aminodextran carrying SH groups, and use thereof
Colloidal metal particles having a coating comprising non cross-linked, SH-activated dextran or aminodextran. Biomolecules may be linked directly or indirectly to the particles, which are useful as detection reagents in immunological assays. ...
08/14/2007
7241627Wearable article with multi-level alert system
A wearable article equipped with a multi-level alert system detects and emits signals corresponding to various abnormal levels of a substance in a mammalian extract. By providing different signals corresponding to multiple abnormal levels of the substance, the weare...
07/10/2007
7229835Amine detection method and materials
A compound linked to a solid support (R) through a divalent linker moiety (X) and which is represented by the following formula: is disclosed. In particular, the 1-hydroxybenzotriazole-6-carboxylic acid is direct...
06/12/2007
7211445Conjugation of biomolecules using diels-alder cycloaddition
A method is provided for covalently linking carbohydrates, proteins, nucleic acids, and other biomolecules under neutral conditions, using a Diels-Alder cycloaddition reaction. In an example, activated carbon-carbon double bonds were attached to free amino sites of ...
05/01/2007
7208286Bioluminescent bioreporter integrated circuit devices and methods for detecting ammonia
Monolithic bioelectronic devices for the detection of ammonia includes a microorganism that metabolizes ammonia and which harbors a lux gene fused with a heterologous promoter gene stably incorporated into the chromosome of the microorganism and an Optical Applicati...
04/24/2007
7202092Indinavir derivatives useful in immunoassay
Derivatives and conjugates of indinavir for generation of antibodies and labeled conjugates for use for detection of indinavir in biological samples. The derivatives are synthesized out of the indane ring hydroxyl group or the pyridine ring nitrogen of indinavir. Al...
04/10/2007
7179660Carriers coated with polysaccharides, their preparation and use
A polysaccharide coated carrier having a coating of at least two successive layers of polysaccharide. The first polysaccharide layer spontaneously associates with a second polysaccharide layer and, optionally, the carrier. Each successive layer of polysaccharide spo...
02/20/2007
7172906Reduction of non-specific binding in assays
Methods and compositions are disclosed for reducing non-specific binding in a binding assay for the determination of an analyte in a sample where one of the reagents for conducting the binding assay comprises a solid support comprising a polysaccharide. The method c...
02/06/2007
7166458Assay and method for analyte sensing by detecting efficiency of radiation conversion
In one aspect, the present invention is a system, a device and a method for sensing the concentration of an analyte in a fluid or matrix. The analyte may be glucose or any other chemical of interest. The fluid or matrix may be, for example, the fluid in a bioreactor...
01/23/2007
7160723Cell separation compositions and methods
The invention provides compositions and methods for cell separation. These reagents and techniques specifically agglutinate cells via surface antigen recognition and can be used to recover even rare cell types in high yield. ...
01/09/2007
7144743Preparation and use of mixed mode solid substrates for chromatography adsorbents and biochip arrays
For certain mixed mode resins having anionic character, a ligand is joined to a solid support via a linkage that includes a mercapto-, ether- or amino-containing moiety. A suitable ligand comprises an aromatic group, a heteroaromatic group, or a heterocyclic group, ...
12/05/2006
7144742Quantitative lateral flow assays and devices
This invention provides solid phase specific binding lateral flow assay methods, devices and kits for quantitating high and low molecular weight analytes. The methods and devices of the invention employ labelled reagents which are either analyte analogs or complemen...
12/05/2006
7132078Assay apparatus
Assay apparatus comprising: a moulded cartridge containing a lateral flow test strip which has a label pad containing an enzyme antibody or antigen conjugate having affinity for an analyte; a capture zone having a capture antibody or antigen having affinity for said...
11/07/2006
7122381Selective affinity material, preparation thereof by molecular imprinting, and use of the same
A selective adsorption material made by the process comprising: a) non-cavalently or reversibly-covalently binding a print molecule to at least two styrene, acrylate or silica monomers, each of which monomers brinds to said print molecule by means of a different fun...
10/17/2006
7112453Retentate chromatography and protein chip arrays with applications in biology and medicine
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...
09/26/2006
7109024Biomolecule-bound substrates
This invention features a biomolecule-bound substrate that includes a support made of an organic polymer and having an unmodified surface; and a plurality of unmodified biomolecules immobilized on the unmodified surface. The organic polymer is acrylic resin, polypro...
09/19/2006
7090803Lateral flow immunoassay device
A lateral flow immunoassay test device that includes a housing with an elongated slot for holding a test sample collector; an elongated holder member for securing at least one immunoassay test strip therein; a first chamber for storing a first, pre-treatment reagent...
08/15/2006
7074586Quantitative assay for low abundance molecules
A method for quantitatively assaying one or more target molecules in a sample uses a nucleic acid aptamer that is specific for each target molecule. A quantitative replicative procedure is used to determine a quantity of aptamer specific for each molecule. ...
07/11/2006
7070941Methods and compositions for tagging via azido substrates
The invention provides methods and compositions for azide tagging of biomolecules. In one embodiment of the invention, proteins are tagged by metabolic incorporation of prenylated azido-analog substrates. Examples of such analogs are azido farnesyl diphosphate and a...
07/04/2006
7067324Photon reducing agents for fluorescence assays
The present invention provides a method for reducing undesirable light emission from a sample using at least one photon producing agent and at least one photon reducing agent (e.g. dye-based photon reducing agents). The present invention further provides a method fo...
06/27/2006
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