Celebrity Inventors
Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7411514 | Failure detecting apparatus The failure detecting apparatus includes an input circuit 13 connected to a temperature sensor 53 to detect various changes, for detecting the resistance of the temperature sensor 53, a monitor circuit 14 connected in parallel to the inpu... | 08/12/2008 |
| 7312615 | System and method for communicating calibration data A Force/Torque (FT) sensor includes memory for storing calibration data associated with the FT sensor. Force and torque analog signals are output to a data acquisition (DAQ) system. The digital calibration data is output to the DAQ system as a digital bitstream comp... | 12/25/2007 |
| 7309994 | Integrated directional bridge A directional bridge for measuring propagated signals to and from a source device to a load device where both the source device and load device are in signal communication with the directional bridge is disclosed. The directional bridge may include a first bridge ci... | 12/18/2007 |
| 7279908 | Dynamically switched line and fault detection for differential signaling systems A differential signaling system is provided. The differential signaling system comprises one or more cable pairs for carrying signals, one or more differential drivers for providing signals to the one or more cable pairs, and one or more differential receivers, the ... | 10/09/2007 |
| 7253671 | Apparatus and method for compensating for clock drift in downhole drilling components A precise downhole clock that compensates for drift includes a prescaler configured to receive electrical pulses from an oscillator. The prescaler is configured to output a series of clock pulses. The prescaler outputs each clock pulse after counting a preloaded num... | 08/07/2007 |
| 7216051 | Power short circuit testing of an electronics assembly employing pre-characterized power off resistance of an electronic component thereof from a power boundary A technique for testing an electronics assembly for a power short circuit is provided. The technique includes pre-characterizing power off resistance of an electronic component(s) of a first packaging level from at least one power boundary of the electronic componen... | 05/08/2007 |
| 7123025 | Differential comparator circuit, test head, and test apparatus There is provided a differential comparator circuit that is mounted on a test apparatus for testing a device under test outputting differential signals including noninverted signals and inverted signals. The differential comparator circuit includes: a difference sig... | 10/17/2006 |
| 7113678 | Detector detecting transmission performance of optical composite cable The detector comprises a loopback unit 10 which is connected to a connector formed at one end of an optical camera cable, an optical loop fiber 11 connecting a first optical fiber 31 and a second optical fiber 32, and a short-circuit wiri... | 09/26/2006 |
| 7016423 | Driver circuit and data communication device The driver circuit of the present invention includes: a drive section for generating a differential signal according to an input signal and outputting the signal to an electric cable or an optical transceiver; and a control section receiving a selection signal based... | 03/21/2006 |
| 6967612 | System and method for standoff detection of human carried explosives The system and method for standoff detection of human carried explosives (HCE) is a portable system that automatically detects HCE up to a range of 200 meters and within seconds alerts an operator to HCE threats. The system has radar only, or both radar and video se... | 11/22/2005 |
| 6940293 | Modeling miller effect in static timing analysis A method is contemplated. According to the method, capacitances in a first resistance/capacitance (RC) extraction corresponding to a circuit are modified. Each capacitance is modified to estimate Miller effect on that capacitance. A ratio of a total capacitance on a... | 09/06/2005 |
| 6914555 | Method of detecting a fluid surface A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second electrode longi... | 07/05/2005 |
| 6851453 | Fluid dispense verification system A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second electrode longi... | 02/08/2005 |
| 6801043 | Time domain reflectometry based transmitter equalization According to some embodiments, time domain reflectometry based transmitter equalization is provided. For example, a reflection detector in a transmitter may detect a reflection signal associated with a calibration signal that was transmitted via an interconnect. The... | 10/05/2004 |
| 6791340 | Device for the comparison of two resistors, and integrated resistor compensation system incorporating this device A device for the comparison of two resistors is based upon analog information carried by currents. The device includes a measurement circuit for extracting the currents from the two resistors to be compared, and copies the currents to a parallel analog-digital conve... | 09/14/2004 |
| 6633171 | Electronic component desired voltage level comparison A comparison circuit for comparing the desired voltage levels of electronic components and for disabling the supply of power to those components if the desired voltage levels are not equivalent. The comparison circuit receives the desired voltage level in... | 10/14/2003 |
| 6630833 | Measurement by concentration of a material within a structure Systems, methods, and probe devices for electronic monitoring and characterization using absorbent media confined by a metallic mesh. The mesh allows a stream of liquid or gas to pass through the structure, so that the media will adsorb the material to wh... | 10/07/2003 |
| 6614240 | Microwave determination related to a material such as chloride found in a cement based composition Determinations are made related to the presence of a predetermined material in concrete under test using previously obtained model information. In one embodiment, the predetermined material includes a chloride material and the model information is obtaine... | 09/02/2003 |
| 6604054 | Method of detecting fluid flow through a conduit A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe upstream from a distal tip of the probe and a second elec... | 08/05/2003 |
| 6573731 | Electron density measurement and control system using plasma-induced changes in the frequency of a microwave oscillator A method and system for measuring at least one of a plasma density and an electron density (e.g., in a range of 1010 to 1012 electrons/cm-3) using plasma induced changes in the frequency of a microwave oscillator. Measurem... | 06/03/2003 |
| 6535785 | System and method for monitoring and controlling gas plasma processes A system and method for monitoring the conditions in a gas plasma processing system while varying or modulating the RF power supplied to the system, so that resulting signals of the electrical circuits of the system provide information regarding operation... | 03/18/2003 |
| 6512380 | Contactor and trip circuit therefor A contactor includes a switching circuit for switching a load between one or more electrical supplies, a current detector for detecting the current flowing through the load, a trip circuit for tripping the current after an interval of time which depends u... | 01/28/2003 |
| 6384590 | Light receiving circuit for use in electro-optic sampling oscilloscope In a light receiving circuit for use in electro-optic sampling oscilloscope which receives first and second optical, photodiodes 51 and 52 are connected in series between a positive bias power supply 50P and a negative bias power supply 50N. The photodiod... | 05/07/2002 |
| 6373262 | Method and apparatus for testing a signal line A transmission line for carrying digital signals is provided with auxiliary line drivers at the receiver end, which are used in combination with the data line driver at the transmitting end to apply a sequence of sets of test voltages onto the line. The v... | 04/16/2002 |
| 6351683 | System and method for monitoring and controlling gas plasma processes A system and method for monitoring the conditions in a gas plasma processing system while varying or modulating the RF power supplied to the system, so that resulting signals of the electrical circuits of the system provide information regarding operation... | 02/26/2002 |
| 6348801 | Fault isolation of an antenna path for a radio telephone A method and a communications device are described, comprising a radio telephone (5) with connected antenna path (1) which can be used to locate precisely a defective area (F) in the antenna path (1) in order to be able to repair the antenna path (1) in a... | 02/19/2002 |
| 6339702 | Output power detection circuit of transmitter An output power detection circuit of a transmitter, which can accurately detect a power outputted from a power amplifier without depending on a change in ambient temperature is realized. The circuit comprises: a first diode to which a first bias direct cu... | 01/15/2002 |
| 6175239 | Process and apparatus for determining transmission line characteristic impedance A process and apparatus are provided to determine the characteristic impedance of a transmission line coupled to the output of a buffer. To achieve this, an output resistance of the buffer is initially set to a relatively high value to underdrive the tran... | 01/16/2001 |
| 6104200 | Apparatus and methods for generating unambiguous large amplitude timing makers in time domain reflectometry systems for measuring propagation velocities of RF pulses to determine material liquid contents moisture Time Domain Reflectometry ("TDR") methods and apparatus for measuring propagation velocities of RF pulses to determine material liquid contents, moisture profiles, material levels and dielectric constants including: i) TDR probes and/or probe adaptors, in... | 08/15/2000 |
| 5939889 | Strength-related testing of concrete using microwave signals An apparatus is disclosed for testing concrete having an unknown water/cement ratio and an unknown compressive strength. The apparatus includes a transmitter assembly for transmitting microwave signals at one or more predetermined frequencies. A receiver ... | 08/17/1999 |
| 5861757 | Dynamic solvent permittivity instrument An instrument for measuring the dielectric constant of samples with complex or uncertain geometries that can include unusually shaped single sample pieces or collections of differently shaped sample pieces such as powders. The premise of the measurement t... | 01/19/1999 |
| 5726578 | Apparatus and methods for time domain reflectometry Time Domain Reflectometry ("TDR") methods and apparatus for measuring propagation velocities of RF pulses to determine material liquid contents, moisture profiles, material levels and dielectric constants including: i) TDR probes and/or probe adaptors, in... | 03/10/1998 |
| 5619143 | Microwave scanning apparatus A method and apparatus for detecting grain direction in wood by means of microwave radiation. A sample of timber is exposed to a polarized microwave beam emitted by a transmitter (11). A polarized receiver (12) evaluates the microwave energy that has been... | 04/08/1997 |
| 5602484 | Delay-spread sensor and detection switching circuit using the same A multipath component detector detects the correlation between a received signal and a reference signal in a training period of the received signal and estimates and outputs the multipath received component levels at a plurality of timing points. A compon... | 02/11/1997 |
| 5559441 | Transmission line driver with self adjusting output impedance A flexible and efficient integrated circuit chip that includes pad drivers for driving an impedance of a transmission line, wherein the integrated circuit further includes all additional circuitry to automatically adjust a matching impedance of the pad dr... | 09/24/1996 |
| 5546007 | Microwave water cut monitoring means and method Apparatus which determines the water cut of a sample petroleum stream irradiates the sample stream at two different locations with microwave energy. The distance that the microwave energies pass through the sample stream are also different. A receiver rec... | 08/13/1996 |
| 5543721 | Method and device for extending the dynamic range in measurements c arried out with a directional coupler For extending the dynamic range in measurements carried out with a directional coupler, such as antenna measurements, a signal is supplied to the object under analysis, such as an antenna, through a first port of the measuring directional coupler, part of... | 08/06/1996 |
| 5502392 | Methods for the measurement of the frequency dependent complex propagation matrix, impedance matrix and admittance matrix of coupled transmission lines A method for completely characterizing coupled transmission lines by short-pulse propagation is described. The complex frequency-dependent propagation matrix, impedance matrix and admittance matrix for a set of n parallel transmission lines can be determi... | 03/26/1996 |
| 5500599 | Method and apparatus for the measurement of the dielectric constant of sample materials An apparatus and a method for the measurement of the complex dielectric constant of a material by evaluating the amount of detuning introduced by the presence of the material. In order to simplify the circuitry required for measurement and evaluation acco... | 03/19/1996 |
| 5497098 | Microwave sensor for identifying the surface properties of a workpiece and associated method A sensor and method for identifying the surface properties of a workpiece includes a microstrip sensor for transmitting and receiving microwave signals and surface properties determining means for determining the surface properties of the workpiece, inclu... | 03/05/1996 |
