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| Number | Title | Issue Date |
| 7535232 | Field-effect device for the detection of small quantities of electric charge, such as those generated in bio-molecular process, bound in the vicinity of the surface The device (1) allows the detection of small quantities of electrical charge (Qs) utilised for recognition of the gybridisation process of a single strand of DNA. It comprises a chip (2) in which is integrated an MOS device having a floating gate (7... | 05/19/2009 |
| 7368922 | Method and device for determining parameters of fluctuating flow The invention relates to a method and a device for determining the parameters of a fluctuating flow of a fluid in a pipe, wherein at least three electrodes that are placed at a distance from one another in the direction of flow are provided in the periphery of the f... | 05/06/2008 |
| 7362105 | Integrated microstructure sensor element for detecting thermodynamic variables of a fluid An integrated microstructure sensor element is proposed for detecting thermodynamic measured variables of a fluid. To that end, a supporting body, particularly a board or a wafer having at least one microstructured heating element in contact with the fluid during op... | 04/22/2008 |
| 7322249 | Mounting for a probe sensor A robust, easy to mount probe sensor includes an elongated body enclosing a sensor element and an integral flange extending away from the body. The body and flange are formed of material having a relatively low characteristic yield point. First and second generally ... | 01/29/2008 |
| 7312611 | Apparatus and method for trapping bead based reagents within microfluidic analysis systems The present invention provides an on-chip packed reactor bed design that allows for an effective exchange of packing materials such as beads at a miniaturized level. In accordance with the present invention, there is provided a method of concentrating an analyte wit... | 12/25/2007 |
| 6992494 | Method and apparatus for monitoring the purity and/or quality of steam A method and apparatus for monitoring at least one of steam purity and steam quality for steam used in a decontamination process. A capacitor is exposed to the steam, wherein the steam acts as a dielectric between the plates of the capacitor. Permittivity of the die... | 01/31/2006 |
| 6967489 | Method and apparatus for controllably effecting samples using two signals Methods and systems for effecting a parameter and detecting a parameter using two electric signal in a conductive path are described. ... | 11/22/2005 |
| 6960921 | Method and apparatus for real time monitoring of metallic cation concentrations in a solution A method and apparatus for monitoring the concentration of metal cations in a chemical solution. In a preferred embodiment, the chemical solution is a solution for derouging or passivating stainless steel. A capacitive sensor provides data indicative of the concentr... | 11/01/2005 |
| 6946852 | Method and apparatus for measuring concentration of a chemical component in a gas mixture A chemical concentration detecting system for determining the relative concentration of a chemical component in a gas mixture. The gas mixture may include chemical components that are antimicrobial chemicals, as well as chemical components that are base chemicals, a... | 09/20/2005 |
| 6935003 | Compound fabrication process and apparatus A miniature machine tool for micro-machining is capable of performing on a workpiece at least one conventional mechanical machining operation and another micro-machining operation such as electrochemical machining (ECM), electro deposit machining (EDM), micro-millin... | 08/30/2005 |
| 6930493 | Method and apparatus for monitoring detergent concentration in a decontamination process A method and apparatus for monitoring the concentration of a detergent in a detergent solution. A capacitive sensor is exposed to the detergent solution, and electrical properties of the capacitive sensor are responsive to changes in the concentration of detergent i... | 08/16/2005 |
| 6927582 | Method and apparatus for monitoring the state of a chemical solution for decontamination of chemical and biological warfare agents A method and apparatus for monitoring the state of a chemical solution for neutralization of chemical and biological warfare agents are disclosed. A capacitor is exposed to the chemical solution, wherein the steam acts as a dielectric between the plates of the capac... | 08/09/2005 |
| 6917885 | Method and apparatus for formulating and controlling chemical concentration in a gas mixture A method and apparatus for formulating and controlling concentrations of deactivating chemicals in a gas mixture inside a chamber. The gas mixture may include chemical components that are deactivating chemicals, as well as chemical components that are base chemicals... | 07/12/2005 |
| 6909972 | Method and apparatus for formulating and controlling chemical concentrations in a solution A method and apparatus for formulating and controlling concentrations of deactivating chemicals in a solution inside a chamber. The solution may include chemical components that are deactivating chemicals, as well as chemical components that are base chemicals, acti... | 06/21/2005 |
| 6905654 | Method and apparatus for reducing static charges during polymerization of olefin polymers The present invention relates to a method and apparatus for controlling static charges in a fluidized bed olefin polymerization reactor. Static charges which develop in the polymer products are measured and, if they fall outside a predetermined range, static charge ... | 06/14/2005 |
| 6879162 | System and method of micro-fluidic handling and dispensing using micro-nozzle structures Described are a method and system for dispensing a fluid. A fluid-dispensing device includes a substrate and a plurality of nozzles formed in the substrate. Each nozzle has an open-ended tip and a fluid-conducting channel between the tip and a source of fluid. A non... | 04/12/2005 |
| 6741083 | OSCILLATING DEVICE FOR THE DETERMINATION OF THE PURITY OF SINGLE OR MULTI-COMPONENT LIQUIDS FROM THEIR DIELECTRIC PERMITTIVITY, IN A CONTINUOUS WAY AND THROUGH FREQUENCY CHANGES IN THE STATIC PERMITTIVITY REGION AND AN ASSOCIATED MEASUREMENT PROCEDURE An oscillating device to determine the purity of single or multi-component liquids on the basis of their dielectric permittivity, in a continuous procedure through the frequency change in the static permittivity region and with strict temperature control. The oscill... | 05/25/2004 |
| 6624621 | Particle counter volume sensor A particle counter volume sensor for sensing by the electrical resistance puplse method the volume of particles in a fluid suspension passing through an orifice assembly which includes an orifice member made of electrically insulating material and electri... | 09/23/2003 |
| 6614234 | Electric discharge machine An electric discharge machine for machining a workpiece by an electric discharge by supplying a machining fluid to a gap between an electrode and the workpiece and supplying pulses to the workpiece while providing the electrode with a jump motion, the jum... | 09/02/2003 |
| 6548610 | Method and apparatus for reducing static charges during polymerization of olefin polymers The present invention relates to a method and apparatus for controlling static charges in a fluidized bed olefin polymerization reactor. Static charges which develop in the polymer products are measured and, if they fall outside a predetermined range, sta... | 04/15/2003 |
| 6542100 | Apparatus and method for filtering a signal which represents a digital data stream A signal to be produced, which represents a digital data stream, is generated using the currents or voltages from current or voltage sources selected from multiple current or voltage sources. The current or voltage sources whose currents or voltages are u... | 04/01/2003 |
| 6522149 | Method and apparatus for identifying plastics Waste plastics, which contain coloring agents and are in various forms, are heated and electrified to divide into three groups in order to collect them without crushing while maintaining their product forms. Each group consists of high exothermic plastics... | 02/18/2003 |
| 6515481 | Streaming current detector with easily removable matched sleeve and piston set A streaming current detector having a probe in which dielectric elements used to generate the streaming current--specifically, a sleeve for slideably receiving a reciprocating piston and the piston itself--can be replaced independently of the electrodes. ... | 02/04/2003 |
| 6204668 | DC/RF blood cell detector using isolated bridge circuit having automatic amplitude and phase balance components A differential DC/RF bridge-configured flowcell particle detector includes a flowcell and an adjustable circuit model of the flowcell, which are differentially coupled through output amplifier circuits and galvanically isolated from sources of signal degr... | 03/20/2001 |
| 6107803 | Streaming current sensor A streaming current sensor on which the placement of the sample outlet lower on the vertical axis than the sample inlet so as to increase the accuracy, reliability, and sensitivity of the sensor in comparison to those of the prior art, by enabling contami... | 08/22/2000 |
| 5760298 | System and method for monitoring debris in a fluid A system for monitoring debris in a fluid by detecting electrostatic charges associated with the fluid. Both the electrostatic characteristic of the fluid and of the debris are sensed and then separated by a processor that compares their mobility. The mon... | 06/02/1998 |
| 5747992 | Materials characterization cell for polarization spectrum and streaming electrification measurements A materials characterization test cell is disclosed. The test cell includes a housing including spacers for supporting sample insulation materials, and a channel disposed in the housing to permit the passage of oil through the housing. A pair of electrode... | 05/05/1998 |
| 5705930 | Gas path electrostatic sensor A sensor installable within a gas turbine engine for sensing electrostatic charge therein. The sensor comprises a sensing plate and first and second shielding plates. The sensing plate has a first face with a first peripheral portion, and a second face wi... | 01/06/1998 |
| 5616872 | Particle size and charge measurement in multi-component colloids A method and device is disclosed for determining the distribution of charge and size in a colloidal system. The arrangement disclosed is adapted to measure these characteristics in an inhomogeneous colloid. A colloid is subjected to a steady or slowly var... | 04/01/1997 |
| 5598099 | System and method for coincidence detection of ungrounded parts with detectors located within and outside a production coating area A system and method for coincidence detection of ungrounded or inadequately grounded parts during the electrostatic coating process in order to improve production flow, provide an overall cost saving by efficient use of the coating material and prevention... | 01/28/1997 |
| 5591896 | Solid-state gas sensors Solid state gas sensors are provided, the use of which permits quantitative measurement of gaseous contaminants or change of composition of a gas or atmosphere being monitored. The gas sensor comprises at least a base, a first electrode, a second electrod... | 01/07/1997 |
| 5540845 | Method of and apparatus for monitoring aqueous streams A metallic indicator electrode senses the anionic charge per unit time borne by the dispersed phase of a stream of an aqueous dispersion of negatively charged particles by virtue of the potential developed by the electrode as measured by a voltmeter. The ... | 07/30/1996 |
| 5529675 | Electrostatic coalescer testing apparatus The invention is an electrostatic coalescer testing apparatus for testing the ability of chemical additives to facilitate electrostatic coalescence of water in a water hydrocarbon-containing mixture. The apparatus includes: (a) a plurality of tubular cont... | 06/25/1996 |
| 5502389 | Apparatus for polyelectrolyte measurement with an ultrasonically driven liner An apparatus for automated polyelectrolyte measurement in process materials comprises a sample vessel with an outer wall defining a cylindrical cavity and with a reservoir of larger diameter above and in communication with the cavity. A liner for the cavi... | 03/26/1996 |
| 5480511 | Method for contactless real-time in-situ monitoring of a chemical etching process A contactless method and apparatus for in-situ chemical etch monitoring of an etching process during etching of a workpiece with a wet chemical etchant are disclosed. The method comprises steps of providing at least two toroidal windings in the wet chemic... | 01/02/1996 |
| 5450744 | Contamination monitoring system A contamination monitoring system for monitoring contaminants in a liquid, comprising a first electrical conductivity sensor, a second electrical conductivity sensor, a filter and a pump, the filter being disposed between the first sensor and the second s... | 09/19/1995 |
| 5408185 | Apparatus for automated polyelectrolyte measurement Apparatus for automated polyelectrolyte measurement of liquid process materials including a sample vessel which defines an electrically insulating, cylindrical cavity below a larger-diameter reservoir. Electrodes are located at the ends of the cylindrical... | 04/18/1995 |
| 5361034 | Apparatus for measuring the conductivity of a fluid An apparatus for measuring the conductivity of a fluid is disclosed. The invention 10 provides both a contact and non-contact monitoring of fluid conductivity by measuring the A.C. dielectric properties of the fluid. The invention 10 transmits an electrom... | 11/01/1994 |
| 5329236 | Apparatus for estimating charged and polarized states of functional groups in a solution An apparatus for detecting an electrostatic force in a solution includes a sample and a cantilever. An end of the cantilever is conductive and has voltage applied to it. The apparatus detects electrostatic interaction caused by functional groups of target... | 07/12/1994 |
| 5280250 | Method and apparatus for measuring .zeta. potential of a substance at high temperature The invention describes a novel device to measure .zeta.-potentials of substances at high temperatures. The device involves packing the substance to be measured into a "RULON" (polytetrafluoroethylene including a heat resistant filler, e.g., fiberglass, q... | 01/18/1994 |
