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| Number | Title | Issue Date |
| 7392444 | Non-volatile memory evaluating method and non-volatile memory The present method generates a greater number of hot holes than those generated by normal write/erase operations, thereby making it possible to evaluate an operation of a non-volatile memory with respect to hot holes. The present method performs a write operation to... | 06/24/2008 |
| 7304484 | Method and device for the temperature compensation of a measuring bridge A method for the temperature compensation of a resistance measuring bridge, such as in particular a Wheatstone bridge, is characterized in that a capacitor positioned between the input circuit and a resistance switching circuit of the Wheatstone bridge is successive... | 12/04/2007 |
| 7267002 | Capacitance type physical quantity detector A capacitance type physical quantity detector includes a sensor unit of which the capacitance varies depending upon a change in the physical quantity and a C-V converter unit which converts a change in the capacitance of said sensor unit into a voltage. The C-V conv... | 09/11/2007 |
| 7176700 | Moisture sensor device and self-diagnosing method therefor A moisture sensor device includes a sensor portion having a capacitance that is varied in accordance with surrounding humidity, a signal processor for processing a detection signal of the sensor portion and outputting the signal corresponding to the humidity, a heat... | 02/13/2007 |
| 7124983 | Hybrid electrical ice protection system and method including an energy saving mode A hybrid electrical ice protection system implements three ice protection methods in various combinations. The ice protection methods include the fully-evaporative anti-ice protection method, the wet running anti-ice protection method, and the de-ice method. The par... | 10/24/2006 |
| 7100455 | System and method for pressure measurement A system and method for pressure measurement may include the ability to readily produce a pressure measurement system. In one general aspect, pressure measurement may include a signal-converting circuit that includes a coupler, a signal biaser, and a signal span adj... | 09/05/2006 |
| 6917206 | Multiple frequency grain moisture sensor for combines A grain moisture sensor having a sensor cell that includes a driven plate, a sense plate proximate to and substantially parallel with the driven plate for capacitive measurement across a spacing between the driven plate and the sense plate, and a fill plate adjacent... | 07/12/2005 |
| 6809528 | Method and apparatus for measuring water content A method and apparatus for measuring the water content of a liquid, including a method step for electrically measuring the property of the liquid for one parameter. The properties of the liquid are measured at least substantially simultaneously by another electrical... | 10/26/2004 |
| 6750664 | Apparatus for managing an intergrated circuit An apparatus for an integrated circuit comprising a thermal sensor (41-44), an A-D converter (58) coupled to the thermal sensor, wherein the thermal sensor provides an input to the A-D converter, and the A-D converter converts the input to a digital va... | 06/15/2004 |
| 6690180 | Process and apparatus for determining ratio of fluid components such as methanol and water for reforming feed A method and sensor for determining the ratio of two components in a fluid mixture comprising a test cell in open communication with the fluid mixture and a reference cell containing a desired fluid mixture not in contact with the fluid mixture being test... | 02/10/2004 |
| 6570395 | Portable grain moisture meter A portable grain moisture measurement device has an automatic grain moisture measurement actuation system whenever the compaction of the grain within a test cell of the device is at a preset value and upon such automatic actuation a visual display is acti... | 05/27/2003 |
| 6501287 | Apparatus and method for measuring thickness Apparatus are provided for measuring coating thickness. The apparatus include first and second inductors, which may be coils, and measuring the impedance of conductors by passing alternating current through the conductors. The conductors are arranged so t... | 12/31/2002 |
| 6313645 | Method of determining the volumetric proportion of liquid water and the density of snow and a device for carrying out the method In a method and apparatus for determining the volumetric proportion of water in snow and the density of snow, a probe consisting of at least three parallel, but differently spaced, electrical conductors is installed in an area so that the probe is surroun... | 11/06/2001 |
| 6035004 | Digital radio receiver An inexpensive, compact digital radio receiver corrects IQ imbalance, non-orthogonal I and Q phases, and DC offset by a DSP. The digital radio receiver is equipped with an antenna, an RF/IF converter for converting a radio frequency into an intermediate f... | 03/07/2000 |
| 5844138 | Humidity sensor A humidity sensing device comprises a sensor unit including a humidity sensitive capacitor having a capacitance which changes as a function of relative humidity, an oscillator circuit including the humidity sensitive capacitor wherein the output frequency... | 12/01/1998 |
| 5764065 | Remote contamination sensing device for determining contamination on insulation of power lines and substations A remote contamination sensing device for contamination on insulation of electric power lines and substations includes a data logger and a supporting structure to which a sensing capacitor with at least two conductors is attached such that the conductors ... | 06/09/1998 |
| 5663650 | Portable grain moisture meter A portable grain moisture meter has a large 16 character digital display allowing an alphabetical list of grain selections to be selectably displayed in full text format and subsequently tested for moisture content with the test results also displayed on ... | 09/02/1997 |
| 5296819 | Polymer capacitative moisture sensitive device comprising heating means A moisture sensitive device includes a polymer capacitive moisture sensitive element and a heater. The polymer capacitive moisture sensitive element is formed by sequentially stacking a lower electrode, a moisture sensitive film made of an organic polymer... | 03/22/1994 |
| 5012196 | Capacitance sensor arrangement A capacitance sensor arrangement is used to determine the distance of an element such as a shearing handpiece from a surface such as the skin of a sheep. The arrangement processes data from one or more sensors which include a variable capacitor dependent ... | 04/30/1991 |
| 4952882 | Capacitance sensor assembly A capacitance sensor for measuring changes in thickness of a dielectric film, such as plastic film, passed through the sensor, having an upper and lower housing projecting from a back plate, the lower housing having an upper electrode surface and the uppe... | 08/28/1990 |
| 4855667 | Parallel plate dielectric analyzer A parallel plate dielectric analyzer is disclosed including: a distance sensor for accurately measuring the varying distance between the electrodes, such as a linear voltage differential transformer (LVDT), and a motor responsive to the distance sensor fo... | 08/08/1989 |
| 4849687 | Steam quality monitoring means and method A steam quality monitor monitoring the quality of steam flowing in the pipe includes capacitance sensing apparatus which senses the capacitance of the flowing steam and provides a capacitance signal corresponding to the said capacitance. Another sensor wh... | 07/18/1989 |
| 4806847 | Dielectric liquid level sensor and method A sensor for sensing the level of oil or transmission fluid under both normal and extreme temperature conditions. The only active components of the sensor have input and leakage currents substantially lower than those of diodes and current sources under h... | 02/21/1989 |
| 4801863 | Apparatus for monitoring the mixing relationship of two liquids Apparatus for enabling continuous monitoring of a mixture ratio of two different liquids as well as to limit it to those mixture amounts which are drawn off at a particular time for the purpose of being used which includes a receptacle filled by a liquid ... | 01/31/1989 |
| 4766369 | Ice detector An ice detector 11 is provided for the determination of the thickness of ice 22 on the outer surface 12 on an object (e.g., aircraft 10) independently of temperature or the composition of the ice 22. First capacitive gauge 16, second capacitive gauge 18, ... | 08/23/1988 |
| 4748400 | Method for controlling the amount of moisture associated with a web of moving material A moisture measurement and control system controlling the amount of moisture in paper being manufactured by papermaking machinery, for example, linerboard, utilizes a standard scanning moisture sensor to calibrate a nonscanning moisture sensor to thus pro... | 05/31/1988 |
| 4621228 | Electric moisture meter A voltage signal associated with the moisture content of a sample in grain or sand form is converted into a digital signal value by an analog-to-digital converter. A programmable read-only memory capable of erasure and field rewriting has stored therein c... | 11/04/1986 |
| 4584522 | Digital direct reading grain moisture tester A direct measuring digital grain moisture meter comprises a light weight power supply, an oscillator, a two plate capacitor having a receptacle admitting a grain sample acting as the capacitor dielectric, and a detector/display measuring the dielectric co... | 04/22/1986 |
| 4580233 | Method of measuring moisture content of dielectric materials The present invention is a method for measurement of moisture in dielectric materials. It is particularly useful for lumber. In the preferred version, at least two alternating current signals whose frequencies differ by a factor of at least 10 are capacit... | 04/01/1986 |
| 4468609 | Control system for the detection of leaks in insulated pipes A control system for the detection of leaks in insulation-jacketed pipes having measuring probes, each with two electrodes, arranged at sectional intervals and connected to an evaluation circuit. The technical problem resides in the arrangement of the mea... | 08/28/1984 |
| 4468610 | Radio frequency apparatus for measuring moisture content of materials as a function of dielectric constant Apparatus for measuring moisture content of gypsum board and like products as a function of dielectric constant comprising an rf signal source, an antenna disposed for rf field coupling to a test material, first and second reference inpedances, and a cont... | 08/28/1984 |
| 4462250 | Grain moisture meter A grain moisture meter and/or a meter for measuring grain bin temperatures, comprises a half-wave pulse oscillator with pulses connecting to the outer shell of a grain container. Pulses pass through the grain and through a central electrode and the signal... | 07/31/1984 |
| 4399404 | Moisture tester with probe The tester has a probe to be inserted into granular or fluid materials for measuring instantly permittivity and temperature. The characteristics of materials are measured according to permittivity, the characteristics of moisture of grains being used as a... | 08/16/1983 |
| 4287470 | Digital humidimeter This invention relates generally to an apparatus for measuring capacitance and resistance and more particularly to a digital humidimeter, which can be used for determining the moisture content of cereals and other powdered, granular or granulated substanc... | 09/01/1981 |
| 4282480 | Apparatus for humidity detection Apparatus for humidity detection comprises a humidity sensing element, the electrostatic capacitance of which varies in accordance with the ambient humidity, a fixed capacitor, first and second pulse generating circuits respectively responsive to the sens... | 08/04/1981 |
| 4272718 | Moisture meter A moisture meter of an electrostatic type includes resonance circuits, a measuring electrode connected in parallel with the resonance circuits for measuring the capacitance of a sample, and a variable capacitance diode controlled in accordance with the ca... | 06/09/1981 |
| 4181881 | Electrical impedance measuring apparatus for providing separate measurements of the conductivity and dielectric coefficient of various materials An oscillator provides an output signal, of frequency f0, whose phase is shifted by substantially 45° to obtain a test signal which is coupled by a first cable to a bridge circuit located in proximity to a sample box and interconnected with an... | 01/01/1980 |
| 4174498 | Apparatus and method for providing separate conductivity, dielectric coefficient, and moisture measurements of particulate material A bridge circuit, interconnected with a sample box containing a sample of particulate material, is energized by a test signal and provides a bridge output signal whose phase, relative to the phase of the test signal, and whose amplitude are related to the... | 11/13/1979 |
| 4121151 | Analysis instrument An analysis instrument for measuring selected constituents present in a sample of a material such as a bulk commodity includes a test cell to receive the sample. The test cell comprises a capacitor whose electrical properties are modified in accordance wi... | 10/17/1978 |
| 4107599 | Electrode for an impedance measuring apparatus An electrode, forming a part of an apparatus for measuring the electrical impedance of a variety of sampled materials for the purpose of determining moisture content, is composed of a pair of spaced-apart conductors across which an electrical field is rad... | 08/15/1978 |
