Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7890062 | Fast correction of power measurements of signals having a changing frequency Power measurements of a signal having a changing frequency are corrected by acquiring samples of the signal, matching the samples of the signal to a sequence of frequencies indexed to correction transforms, and applying the correction transforms to the samples of th... | 02/15/2011 |
| 7822579 | Interference rejection through circle fitting A method and apparatus for measuring electrical signals measures an electromagnetic wave having an interference component at a center frequency and at multiple times to obtain data points. The positions of the data points on a complex plane are calculated. Chords of... | 10/26/2010 |
| 7817762 | Method and apparatus for detecting leading pulse edges An apparatus and method for detecting leading pulse edges of a signal includes a controller, hysteresis threshold comparators and qualification timers. The controller uses the outputs from the timers in order to determine whether or not a transition of the input sig... | 10/19/2010 |
| 7739063 | Nonlinear measurement system error correction A method for eliminating the systematic measurement errors from a measurement system, for example a vector network analyzer, such that an accurate representation of the behavior of a nonlinear device can be measured or characterized. The cross-frequency phase and ab... | 06/15/2010 |
| 7705990 | Optical sources for SPR applications The use of a high power and an incoherent light source to reduce noise associated when investigating unknown molecules in Surface Plasmon Resonance (SPR) systems. High power and incoherent light sources can improve resolution and accuracy of SPR system measurements.... | 04/27/2010 |
| 7685866 | Leakage checking and calibrating of a liquid delivery system A liquid delivery system having at least one channel, at least one valve within that channel, at least one flow sensing device within that channel, and a pressure source downstream of the valve capable for generating variable pressures. ... | 03/30/2010 |
| 7671329 | Inductively coupled plasma mass spectrometer An inductively coupled plasma mass spectrometer comprises a control device 70 for collectively controlling each of the following factors: the amount of liquid drops in the aerosol that is to be supplied to a plasma torch 20, the flow rate of carrier ga... | 03/02/2010 |
| 7670480 | Solvent supply with correction of piston movement A supply flow path for supplying a solvent is described. The supply flow path includes metering devices each with a piston, the metering devices being adapted for metering the solvent through separate source paths feeding the supply flow path. The supply flow path f... | 03/02/2010 |
| 7661013 | System and method for error recovery An automated laboratory device that comprises a mechanism that performs operations on laboratory samples, a scheduler that causes the mechanism to process laboratory samples in accordance with programmed processes, logic that detects an error occurring in a process ... | 02/09/2010 |
| 7651280 | Coupling for conduits sealed in a recess of a housing A coupling for bringing a first conduit in communication with a second conduit. Each of the conduits comprises an end to be coupled and each of the conduits is adapted for conducting a medium. The coupling has a housing and at least one aperture in said housing. The... | 01/26/2010 |
| 7634377 | Unitary data format for measurement devices A method of processing data includes providing input data by a measurement device, converting the input data into output data provided in a unified data format, wherein the unified data format is a unique data format which is independent of individual formats of var... | 12/15/2009 |
| 7631542 | Chromatography system with fluid intake management A variety of methods for operating a chromatography system are presented. Specifically, methods for operating a pumping system within a chromatography system are presented. The methods presented are directed to pumping apparatus in which very small amounts of fluid ... | 12/15/2009 |
| 7620515 | Integrated circuit with bit error test capability An integrated circuit (10), preferably a field programmable gate array—FPGA or an application specific integrated circuit—ASIC—, comprises a level comparator (30) for comparing a level of a comparator input signal and correspondingly providing a ... | 11/17/2009 |
| 7535246 | Computing the characteristics of a field-effect-transistor (FET) A coefficient indicating the relationship between a measurement voltage of voltage measuring unit and a voltage drop in a drain bias voltage due to drain current is determined based on at least an S parameter of a measuring system and an input impedance of the measu... | 05/19/2009 |
| 7535243 | Method and program for controlling an apparatus for measurement of characteristics of a semiconductor device under test When first and second measuring equipment connected to switches are switched to measure multiple types of electronic characteristics of a device under test which is a semiconductor device, the device under test is disconnected from the second measuring equipment and... | 05/19/2009 |
| 7534352 | Reversed endcapping and bonding of chromatographic stationary phases using hydrosilanes A process for producing a chromatographic stationary phase for use in reversed-phase chromatography. Chromatographic stationary phases prepared according to the methods of the current invention and liquid chromatography columns, which include the stationary phases, ... | 05/19/2009 |
| 7533685 | Lubricant collection apparatus An apparatus for collecting lubricant, such as from a vacuum pump, is disclosed. In certain embodiments the apparatus includes a cabinet for retaining a vacuum pump and a variable depth basin beneath the cabinet for collecting lubricant from a vacuum pump. In specif... | 05/19/2009 |
| 7530366 | Vacuum pump cabinet An cabinet for retaining a vacuum pump. The cabinet includes, in certain embodiments, removable access panels that allow access to the interior of the cabinet and to a vacuum pump placed within the cabinet. In certain embodiments the cabinet includes a top surface a... | 05/12/2009 |
| 7519489 | Determination of a jitter property of a signal Determining a jitter property of a signal with a repetitive bit sequence of a plurality of bits includes setting a sample point at a first sampling position relative to a first transition within the bit pattern, assigning a set of digital values to comparison result... | 04/14/2009 |
| 7518896 | Phase control system for switching power supply pre-regulator allows increased power transformer leakage inductance A switching pre-regulator for a bulk capacitor filter followed by a series pass regulator has a switching element controller that relies upon a large desirable leakage inductance in a main secondary winding of a power transformer acting as a swinging choke input to ... | 04/14/2009 |
| 7518389 | Interface assembly and dry gas enclosing apparatus using same An interface assembly provided at a test head, for connecting a probe card to the test head. The interface assembly includes an interface comprising an interface body and a coaxial connector supported by the interface body, and a casing for enclosing a dry gas that ... | 04/14/2009 |
| 7517395 | Seal having low friction non-stick surface layer An inlet assembly for introducing a sample into a carrier gas stream for gas chromatography is disclosed including a housing having a bore that receives a liner. A sealing member having a core with a surface layer is positioned within the bore in sealing engagement ... | 04/14/2009 |
| 7507336 | Connector for analytical devices A connector element for use with analytical devices is provided. The connector element includes a cavity for receiving a sealing member, and an access element for providing access to the sealing member when disposed in the cavity, e.g., for dislodging the sealing me... | 03/24/2009 |
| 7496130 | Method and apparatus for predicting a signalling code corresponding to a code spur The existence of non-linearities in a spread-spectrum communications system can result in a transmitter generating code spurs projecting onto channels used to communicate information symbols between a transmitter and a receiver. The present invention provides a meth... | 02/24/2009 |
| 7496119 | External cavity laser with multiple stabilized modes A laser apparatus for providing a stabilized multi mode laser beam includes an external cavity for providing an optical path for generating a laser beam which is stimulated by a gain medium, where the external cavity has first spectral characteristics, and a mode-se... | 02/24/2009 |
| 7495591 | Performing a signal analysis based on digital samples in conjunction with analog samples Testing a device under test—DUT—includes providing a test signal from the DUT to a test probe, taking from the test signal being present at the test probe analog samples at a first sampling rate, taking from the test signal being present at the test probe digita... | 02/24/2009 |
| 7491326 | Apparatus for distributing liquids having an adapter An apparatus for distributing liquids to one or more receiving elements. The apparatus comprises a first element arrangement having one or more first receiving elements, a second element arrangement having one or more second receiving elements, a distributor adapted... | 02/17/2009 |
| 7479837 | Noise signal generation by mapping random words A noise signal generator includes a random word generator for generating a sequence of random words, each word representing an input value, a mapping unit for receiving the sequence of random words, mapping each input value to an output value of according to a proba... | 01/20/2009 |
| 7480053 | Position detection based on two-directional correlation A method of determining position information, the method having detecting—along a first direction—a value of a geometry parameter related to a structure formed on and/or in a substrate, and determining—with regard to a second direction—a value of a position ... | 01/20/2009 |
| 7473399 | Dispensing volumes of liquids using a flap septum For dispensing volumes of liquids, a hinged septum has a flap inclined with respect to the longitudinal axis of a liquid channel. A deposition device deposits liquid on the flap, wherein the deposition device is arranged to contact the flap. ... | 01/06/2009 |
| 7474975 | Method to verify the outcome of calibration with a network analyzer Making use of the values of error items quantified during full n-port calibration, an indicator of whether or not all calibration steps have been uniformly conducted (calibration consistency) is calculated and the result of the calibration is confirmed based on this... | 01/06/2009 |
| 7472035 | Method for analyzing measurement data of device under test, program, measurement data analyzing system An operation method for a semiconductor measurement apparatus having measuring, displaying, inputting, and storing devices, and a computing and controlling device connected to the other devices that performs computation and control. The method includes selecting, th... | 12/30/2008 |
| 7469286 | Data-transparent measurement management system A measurement management system adapted to communicate with one or more measurement instruments, comprises at least one driver, each being adapted for communicating with at least one measurement instrument, a database adapted for storing information, and a processin... | 12/23/2008 |
| 7467078 | Portable distributed application framework A portable distributed application framework that uses a definition file describing a structure of data and commands to be used by the framework to interface with an application. A proxy, responsive to a definition file, creates and receives messages based on the de... | 12/16/2008 |
| 7463114 | Radio frequency assembly and a multiport switch having the same An RF assembly of a multiport switch is disclosed. The RF assembly includes an RF cavity housing and a cover. The RF cavity housing includes a common port defined by a cavity in a surface of the RF cavity housing and at least another port defined by a trough in the ... | 12/09/2008 |
| 7430227 | Wavelength tunable laser source with parameter correction A wavelength tunable laser unit has a laser mode selection, and is adapted to provide a laser signal in accordance with one or more laser control parameters. For operating the laser unit, the laser signal is swept in a wavelength range, a laser operation signal indi... | 09/30/2008 |
| 7430488 | Method for controlling a measuring apparatus A measurement system comprising modules for receiving analog measurement signals and outputting digital data and a controller for receiving and data processing of these digital data, this measurement system, wherein these modules comprise a A/D converter for convert... | 09/30/2008 |
| 7429869 | Method for measuring FET characteristics A coefficient indicating the relationship between a measurement voltage of voltage measuring unit and a voltage drop in a drain bias voltage due to drain current is determined based on an S parameter of a bias tee and an input impedance of the measuring unit. A volt... | 09/30/2008 |
| D576897 | Gauge housing | 09/16/2008 |
| 7403031 | Measurement apparatus for FET characteristics A measurement apparatus for FET characteristics comprises a divider connected to a pulse generator for dividing pulses from the pulse generator into first and second pulses; a first SMU; a first switch for selecting pulses from the divider or voltage from the first ... | 07/22/2008 |
