Class / Patent application number | Description | Number of patent applications / Date published |
324710400 | Particle counting | 11 |
20080315860 | DEVICE AND METHOD FOR COUNTING ELEMENTARY PARTICLES EMITTED BY A FLUID IN A CONDUIT - The invention relates to a device and a method for counting elementary particles emitted by a fluid, the device comprising a line for transferring the fluid and, outside the line, detection means ( | 12-25-2008 |
20080315861 | BIOMOLECULE DETECTOR BASED ON FIELD EFFECT TRANSISTOR ARRAYS CONTAINING REFERENCE ELECTRODES AND DETECTION METHOD FOR BIOMOLECULES USING THE SAME - A biomolecule detector and a method thereof are provided to detect the biomolecules in a liquid sample using a field effect transistor (FET) array. The FET array is characterized in that the transistor used has no gate electrode layer, a reference electrode is provided in the space between the transistors in the array instead of the gate electrode layer. Using the FET array, the existence of the biomolecules in the sample can be detected electrically and effectively under the circumstance where an external voltage is applied to flow the biomolecules. Using the FET array to detect the biomolecules, the deviation for each transistor is reduced and the multiplex processing is also possible to measure the plurality of analyzing samples at the same time. | 12-25-2008 |
20090058396 | Electrode configuration for LIMCA - The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. An first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise. | 03-05-2009 |
20090066315 | DYNAMIC MODULATION FOR MULTIPLEXATION OF MICROFLUIDIC AND NANOFLUIDIC BASED BIOSENSORS - The present invention generally relates to a method for rapidly counting micron and/or submicron particles by passing such particles through any of a plurality of microfluidic channels simultaneously with an ion current and measuring the signal generated thereby. The present invention also generally relates to a device for practicing the method of the present invention. Some embodiments can include methods and/or devices for distinguishing between and counting particles in mixtures. Still other embodiments can include methods and/or devices for identifying and/or counting bioparticles and/or bioactive particles such as pollen. | 03-12-2009 |
20090315533 | Particle Counter with Electronic Detection of Aperture Blockage - An apparatus for characterizing particles suspended in a liquid sample containing electrolyte including a sample chamber to hold the liquid sample and a collection chamber to hold an electrolyte solution. A wall separates the chambers and includes an aperture to allow passage of particles between the chambers; and a pair of electrodes are disposed on opposite sides of the aperture to induce a current through the aperture. A pressure source forces the sample to pass from the sample chamber into the collection chamber; and a processor measures a signal representative of electric resistance variation between the electrodes to enable determination of the size of the particle within the liquid passing through the aperture, wherein the processor is adapted to monitor two or more parameters characterizing the flow of particles through the aperture, and to detect a potential blockage of the aperture by detecting a change in any one of the parameters. | 12-24-2009 |
20110050200 | Apparatus and Method for Counting and Identifying Particles of Interest in a Fluid - The invention relates to an apparatus for counting particles in a fluid comprising a substrate having a first surface; a lid having a second surface facing the first; at least one spacer element interposed between the substrate and the lid so as to maintain the first and second surface spaced from one another; a partition with a plurality of through-openings having nanometric size, the partition being interposed between the spacer element and the lid so as to define at least one first chamber between the partition and the lid and at least one second chamber between the partition and the substrate, the chambers being fluidically connected with one another through at least one of the openings. According to the invention, the substrate has at least one first electrode on the first surface and the lid has a second electrode, each first electrode being configured so as to detect an electric signal associated to the passage of one of said particles through one of the through-openings of the partition. The invention further relates to a corresponding method for counting particles in a fluid. | 03-03-2011 |
20120161747 | EVAPORATION DEVICE - The present invention relates to a device for the vaporization of a liquid, said device comprising: a reservoir capable of containing a liquid to be vaporized, a heating element capable of heating the liquid in order to vaporize the liquid, a capillary pump capable of pumping the liquid contained in said reservoir to said heating element by capillary pumping, and a capillary barrier arranged along a capillary pumping direction of the liquid to be vaporized downstream from the capillary pump, said capillary barrier being capable of preventing the non-vaporized liquid from escaping from the device. | 06-28-2012 |
20120194167 | HIGH THROUGHPUT LABEL FREE NANOPARTICLE DETECTION AND SIZE ASSAY - The present invention reports a novel microfluidic analyzer for the high-throughput, label-free measurement of particles suspended in a fluid. | 08-02-2012 |
20130229168 | MICROORGANISM NUMBER MEASUREMENT DEVICE - A microorganism number-measuring apparatus includes: a container holder for holding container having an opening in the upper surface of the container, with the opening being positioned upward; and a rotary driver for rotating a liquid accommodated in container held by the holder, about the rotary axis in the up-and-down direction. Moreover, the apparatus includes: an electrode inserting part for inserting measurement chip to a position from above container held by the holder, via the opening, with the position being closer to the container's inner surface than to the container's center axis and being away from the container's inner surface with a predetermined distance; and a measurement unit for measuring microorganisms using measurement electrode of measurement chip inserted into container by the electrode inserting part. The electrode inserting part holds measurement chip, in a state of measurement electrode facing the container's inner-surface. | 09-05-2013 |
20140218006 | WATER HEATER ANODE ROD DEPLETION SENSING - The present subject matter relates to methodologies for sensing anode rod depletion. Consumers generally are not concerned with monitoring consumption of protective anode rods incorporated within water heaters. The present subject matter provides automatic monitoring of anode rod depletion and provides the consumer with notification of rod depletion beyond a predetermined amount. The principles of Faraday's Law are used to calculate anode weight loss by conversion of measured and accumulated current. | 08-07-2014 |
20150355157 | ELECTRODE CONFIGURATION FOR LIMCA - Disclosed is a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten metal. A first electrode inserted in the molten metal is electrically insulated from second and third electrodes, also inserted in the molten metal. Molten metal and particles pass between the first electrode and the second and third electrodes through a passage in the electrical insulation. The second and third electrodes have a configuration with respect to the first electrode sufficient to establish symmetrical current loops between the first electrode and the second and third electrodes when a current is supplied to the second and third electrodes. The current is supplied from an ultra-capacitor. Electromagnetic noise in the symmetrical current loops is detected and is added in opposition to reduce the amplitude of the electromagnetic noise. | 12-10-2015 |