Patent application number | Description | Published |
20090075389 | Method for determining an analyte in a fluid - A reagent strip for measuring the concentration of glucose in whole blood has a polymer on at least one side thereof to increase the opacity thereof, thereby reducing the effect of hematocrit on the glucose determination. | 03-19-2009 |
20090123955 | Size Self-Limiting Compositions and Test Devices for Measuring Analytes in Biological Fluids - A test strip or electrochemical sensor for measuring the amount of an analyte in a hiological fluid, e.g., the glucose content of whole blood, includes a size self-limiting reagent formulation employing an enzyme system for reaction with the analyte, the reactive system mixed into a water-soluble swellable polymer matrix containing small water-insoluble particles having a nominal size of about 0.05 to 20 μm, preferably about 1 to 10 μm. The weight ratio of the water-insoluble particles to the water-soluble swellable polymer matrix is about 1/2 to 2/1. The reagent formulation is deposited onto a non-porous substrate to form a thin layer about 6-16 μm thick, providing a rapid and stable response to application of a sample, while being insensitive to the amount of the sample. | 05-14-2009 |
20090145775 | Reagents and methods for detecting analytes - A reagent for detecting an analyte comprises a flavoprotein enzyme, a mediator such as a phenothiazine mediator, at least one surfactant, a polymer and a buffer. The reagent may be used with an electrochemical test sensor that includes a plurality of electrodes. | 06-11-2009 |
20100255506 | PROCESS OF USING A TETRAZOLIUM SALT - Thiazolyl tetrazolium salts with increased solubility in aqueous solutions have alkylammonium alkoxy substituents, preferably trimethyl ammonium propoxy groups substituents, on phenyl rings attached to the tetrazolium ring. | 10-07-2010 |
20100329951 | Test Sensor Package - A fluid sensor comprises a formed plastic body and a reagent. The body has a top face with an integral first surface. The body also has a bottom face opposed to the first surface and a sidewall that extends from the periphery of the top face. The first surface is adapted to accept a fluid sample. The reagent is disposed on the integral first surface and causes a color change detectable on the bottom face when the reagent reacts with an analyte in the fluid sample. | 12-30-2010 |
20110281287 | SIZE SELF-LIMITING COMPOSITIONS AND TEST DEVICES FOR MEASURING ANALYTES IN BIOLOGICAL FLUIDS - A test strip or electrochemical sensor for measuring the amount of an analyte in a biological fluid, e.g. the glucose content of whole blood, includes a size self-limiting reagent formulation employing an enzyme system for reaction with the analyte, the reactive system mixed into a water-soluble swellable polymer matrix containing small water-insoluble particles having a nominal size of about 0.05 to 20 μm, preferably about 1 to 10 μm. The weight ratio of the water-insoluble particles to the water-soluble swellable polymer matrix is about 1/2 to 2/1. The reagent formulation is deposited onto a non-porous substrate to form a thin layer about 6-16 μm thick, providing a rapid and stable response to application of a sample, while being insensitive to the amount of the sample. | 11-17-2011 |
20110313155 | PROCESS OF MAKING 3-PHENYLIMINO-3H-PHENOXAZINE MEDIATOR - A method of forming a 3-phenylimino-3H-phenothiazine or a 3-phenylimino-3H-phenoxazine mediator includes providing a first reactant including phenothiazine or phenoxazine, providing a first solvent, providing a second reactant and providing a second solvent. The first reactant, first solvent, second reactant and second solvent are combined to form a reactants solution. Sodium persulfate is added to the reactants solution to couple the first and second reactants resulting in a reaction solution including the 3-phenylimino-3H-phenothiazine or the 3-phenylimino-3H-phenoxazine mediator. | 12-22-2011 |
20120149048 | METHOD OF DIFFERENTIATING BETWEEN BLOOD AND CONTROL SOLUTIONS CONTAINING A COMMON ANALYTE - Glucose measured in blood samples is distinguished from glucose measured in the control solutions used to test the optical instruments which make such measurements. The control solutions contain a labeling substance recognized by the optical instrument to distinguish glucose measurements made of control solutions from those made of blood samples. | 06-14-2012 |
20130126350 | Mediator For Test Sensor - A method of forming a 3-phenylimino-3H-phenothiazine or a 3-phenylimino-3H-phenoxazine mediator includes providing a first reactant including phenothiazine or phenoxazine, providing a first solvent, providing a second reactant and providing a second solvent. The first reactant, first solvent, second reactant and second solvent are combined to form a reactants solution. Sodium persulfate is added to the reactants solution to couple the first and second reactants resulting in a reaction solution including the 3-phenylimino-3H-phenothiazine or the 3-phenylimino-3H-phenoxazine mediator. | 05-23-2013 |
20130343963 | TEST SENSOR PACKAGE - A fluid sensor comprises a formed plastic body and a reagent. The body has a top face with an integral first surface. The body also has a bottom face opposed to the first surface and a sidewall that extends from the periphery of the top face. The first surface is adapted to accept a fluid sample. The reagent is disposed on the integral first surface and causes a color change detectable on the bottom face when the reagent reacts with an analyte in the fluid sample. | 12-26-2013 |
20140154719 | METHOD OF DIFFERENTIATING BETWEEN BLOOD AND CONTROL SOLUTIONS CONTAINING A COMMON ANALYTE - Glucose measured in blood samples is distinguished from glucose measured in the control solutions used to test the optical instruments which make such measurements. The control solutions contain a labeling substance recognized by the optical instrument to distinguish glucose measurements made of control solutions from those made of blood samples. | 06-05-2014 |
20140193894 | SENSOR AND PACKAGE - A fluid sensor comprises a formed plastic body and a reagent. The body has a top face with an integral first surface. The body also has a bottom face opposed to the first surface and a sidewall that extends from the periphery of the top face. The first surface is adapted to accept a fluid sample. The reagent is disposed on the integral first surface and causes a color change detectable on the bottom face when the reagent reacts with an analyte in the fluid sample. | 07-10-2014 |