Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8156792 | Method and apparatus for ascertaining and/or monitoring a process variable A method for ascertaining and/or monitoring a process variable, wherein a time-limited, exciting signal, which is described by at least one desired quantity, or by a desired signal form, is applied to a first piezoelectric element, or to a first polarized zone of a ... | 04/17/2012 |
| 8065907 | Apparatus and method for continuous measurement of a physical property of a drilling fluid A testing apparatus comprising a chamber having an inlet and an outlet (16); a measuring device, at least a part of which is provided within the chamber; where the inlet is arranged to direct fluid onto the part of the measuring device within the chamber in o... | 11/29/2011 |
| 7900505 | Acoustic assessment of fluids in a plurality of reservoirs The invention provides devices and methods for acoustically assessing the contents in a plurality of reservoirs. Each reservoir has a portion adapted to contain a fluid, and an acoustic radiation generator is positioned in acoustic coupling relationship to each of t... | 03/08/2011 |
| 7765854 | Microcantilever stress sensor for fluid analysis This invention relates to a microcantilever stress sensor for detecting and quantifying low levels of contaminants in liquids and gases. The invention uses a chemical agent to impart chemical specificity to the microcantilever stress sensor. The microcantilever defl... | 08/03/2010 |
| 7694552 | High quality factor resonators for liquid immersion biological and chemical sensors A mechanical resonator capable of providing an intrinsically high mechanical quality factor in immersion is provided. The resonator includes a membrane attached at its perimeter to a frame, such that a front side of the membrane is in contact with the liquid, and th... | 04/13/2010 |
| 7677087 | Quartz sensor and sensing device Provided is a Angevin type quartz sensor which is high in measurement sensitivity, suppresses the influence of the surface tension of a sample solution during measurement, and enables an installed quartz resonator to stable oscillate. An opposing surface portion opp... | 03/16/2010 |
| 7665348 | System and method for determining atomization characteristics of spray liquids A system and method for determining the atomization characteristics of fluids being emitted by a nozzle is disclosed. In one embodiment, a fluid is emitted through a nozzle while simultaneously sensing vibrations occurring within the nozzle. The vibrations provide i... | 02/23/2010 |
| 7631544 | Flow analysis system A flow analysis flow analysis system having a deaerator for removing gas bubbles in a liquid upstream an analysis section. The deaerator comprises a liquid-containing means variable in internal volume for containing the liquid together with gas bubbles included in t... | 12/15/2009 |
| 7603889 | System for monitoring and controlling unit operations that include distillation Fluid sensor methods and systems adapted for monitoring and/or controlling distillation operations in fluidic systems, such as batch distillation operations or continuous distillation operations, are disclosed. Preferred embodiments are directed to process monitorin... | 10/20/2009 |
| 7555938 | Thermoelastic self-actuation in piezoresistive resonators Systems and methods for thermally actuating piezoresistive cantilevers are described. One embodiment includes a nanoelectromechanical resonator connected in at least one location to a substrate, an electrically conductive path formed on the resonator and a signal so... | 07/07/2009 |
| 7437914 | Microfluidic test systems with gas bubble reduction A reservoir for use in testing a liquid as part of a microfluidic testing system, includes a testing chamber configured to receive the liquid to be tested. A liquid inlet is fluidly coupled to the testing chamber to allow ingress of the liquid into the testing chamb... | 10/21/2008 |
| 7437907 | Sensor for detecting substance in liquid and apparatus for detecting substance in liquid using the same In a sensor for detecting a substance in liquid, recesses are provided in the upper surface of a base substrate. The recesses respectively accommodate SAW elements. A resin layer having openings is arranged such that the sensing portions at the upper surfaces of the... | 10/21/2008 |
| 7426853 | Apparatus for measuring concentration A concentration measuring apparatus includes a vibration member; a shielding unit that limits a flowable area of a solution to be measured close to the vibration member; a vibration control unit that vibrates the vibration member at a frequency; a variation measurin... | 09/23/2008 |
| 7426866 | Acoustic liquid dispensing apparatus A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a container having a chamber for holding a liquid. An orifice is positioned a... | 09/23/2008 |
| 7409851 | Detection of small bound mass Prefabricated catalyzing adsorption sites are incorporated into small oscillators. In one embodiment, the sites are formed of precisely positioned gold anchors on surface micromachined oscillators. The micromachined oscillators may be formed of silicon, such as poly... | 08/12/2008 |
| 7395712 | Testing of bottomhole samplers using acoustics A method and apparatus for testing a hydrocarbon sample. The apparatus includes a sheath disposed about the hydrocarbon sample container and at least one set of acoustic sensors, wherein the at least one set of acoustic sensors is secured to the sheath, and further ... | 07/08/2008 |
| 7389673 | Sensor for detecting analyte in liquid and device for detecting analyte in liquid using the same A sensor for detecting an analyte in liquid includes a base substrate provided with openings and electrode lands on one surface thereof and SAW elements each provided with a sensing portion having at least one IDT electrode on one side. The SAW elements are mounted ... | 06/24/2008 |
| 7383731 | Deep-fry oil quality sensor A cooking oil quality sensing apparatus and system includes an acoustic wave sensor composed of one or more acoustic wave transducers configured upon a piezoelectric substrate such that when the acoustic wave sensor is in contact with cooking oil, the sensor generat... | 06/10/2008 |
| 7360403 | Measurement and control of asphaltene agglomeration in hydrocarbon liquids A method is provided for measuring the agglomerative state of asphaltenes in oil by applying an acoustic signal to the oil, detecting the scattered acoustic energy and using this detected signal to determine the relative particle size distribution of the asphaltene ... | 04/22/2008 |
| 7359803 | Apparatus and method for measuring parameters of a mixture having solid particles suspended in a fluid flowing in a pipe An apparatus 10,70 and method is provided that includes a spatial array of unsteady pressure sensors 15-18 placed at predetermined axial locations X1-XN disposed axially along a pipe 14 for measuring at least one par... | 04/15/2008 |
| 7353695 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 04/08/2008 |
| 7350402 | Method and apparatus for determination of medical diagnostics utilizing biological fluids A method for measuring changes in the composition of fluids, for medical diagnostics or quality control of fluids, comprising: One) placing a drop of fluid upon a quartz crystal; Two) generating ultrasonic vibratio... | 04/01/2008 |
| 7352107 | Transconductance circuit for piezoelectric transducer A transconductance monitoring and amplifying circuit for a piezoelectric transducer that may be used in, e.g., a motion detector system includes a FET, with the transducer (and, hence, the signal voltage reference) floating between the gate and source of the FET, as... | 04/01/2008 |
| 7350403 | Method and apparatus for determination of food quality and authenticity A method for analysis of a multi-component fluid is provided based on the features of the dynamics of the self-organization processes in drying drops. An electro-acoustic resonator is utilized, with a drop of multi-component fluid placed on one end of the resonator.... | 04/01/2008 |
| 7331232 | Measurement method and biosensor apparatus using resonator A measurement method and a biosensor apparatus using a resonator with which it is not necessary to agitate a sample solution in a cell and even if the amount of the sample solution is very small the influence of pressure waves is greatly reduced and extremely easy a... | 02/19/2008 |
| 7311004 | Flow control and operation monitoring system for individual spray nozzles An apparatus and process for monitoring fluid flow through a nozzle is disclosed. A vibration sensor, such as an accelerometer, is mounted to a nozzle. The vibration output received from the sensor is then analyzed to determine whether or not the nozzle is operating... | 12/25/2007 |
| 7281414 | Apparatus, a method, and measuring sensors for scanning states of engine oil The present invention relates to an apparatus, a method, and a sensor for scanning engine oil of a vehicle. An apparatus for scanning engine oil according to an exemplary embodiment of the present invention includes an oil property measuring part for measuring physi... | 10/16/2007 |
| 7278294 | System and method for determining atomization characteristics of spray liquids A system and method for determining the atomization characteristics of fluids being emitted by a nozzle is disclosed. In one embodiment, a fluid is emitted through a nozzle while simultaneously sensing vibrations occurring within the nozzle. The vibrations provide i... | 10/09/2007 |
| 7270004 | Method and apparatus for carrying out non-destructive testing of materials A method of testing a material sample for defects, comprising the steps of applying a test signal to the material sample, receiving a return signal from the material sample and analysing the return signal to determine whether the material sample is defective. In one... | 09/18/2007 |
| 7267009 | Multiple-mode acoustic wave sensor A multiple-mode acoustic wave sensor apparatus includes an acoustic wave device comprising a piezoelectric substrate and at least one electrode on the substrate. When such sensor is used in a wireless configuration, a plurality of antennas can be configured on the s... | 09/11/2007 |
| 7263874 | Methods and apparatus for determining properties of a fluid A method and system for determining properties of a fluid involves interacting the fluid with a standing wave in a first state to establish the standing wave in a second state, analyzing an electric signal associated with the standing wave to determine a characteris... | 09/04/2007 |
| 7260980 | Liquid cell and passivated probe for atomic force microscopy and chemical sensing The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and ... | 08/28/2007 |
| 7257984 | Miniaturized sensor device for detecting characteristics of a fluid, in particular a lubricating oil A miniaturized sensor device comprises at least one pair of active projecting elements or cantilevers, which are set parallel to one another and at a micrometric or sub-micrometric distance apart and are designed to be submerged at least partially in a fluid. Each p... | 08/21/2007 |
| 7254990 | Machine fluid sensor A sensor for sensing one or more properties of a vehicle fluid has a tuning fork resonator adapted to contact the fluid. The tuning fork resonator comprises two tines and is operable to oscillate so that the two tines move in opposite phase at a frequency of less th... | 08/14/2007 |
| 7253644 | Apparatus and method for measuring electrochemical and viscoelastic properties of a liquid An apparatus for measuring electrochemical and viscoelastic properties of a liquid includes two sensing components, an electrochemical impediance spectroscopy component and a quartz crystal microbalance component positioned within a housing for receiving a liquid fo... | 08/07/2007 |
| 7246522 | Methods and apparatus for multi-parameter acoustic signature inspection A multiparameter acoustic signature inspection device and method are described for non-invasive inspection of containers. Dual acoustic signatures discriminate between various fluids and materials for identification of the same. ... | 07/24/2007 |
| 7240553 | Non-invasive detection and analysis of microorganisms in diary products packaged in paper or paperboard based laminated recipients using dry coupling elastic waves The invention relates to a method and a device for the early detection of the presence of micro-organisms in food, particularly in milk and derivatives thereof. One of the main advantages of the invention lies in the fact that the aforementioned detection method can... | 07/10/2007 |
| 7238085 | Method and apparatus to process substrates with megasonic energy A variety of techniques may be employed, alone or in combination, to enhance contact between a processed substrate and applied megasonic energy. In accordance with one embodiment of the new invention, the vibration plate is brought into intimate contact with one sur... | 07/03/2007 |
| 7231805 | Bubble detection with temperature compensation Bubble detection apparatus and method for a liquid dispensing system includes temperature compensation for increasing accuracy of the bubble detection as temperature of the liquid varies. In one embodiment, temperature changes cause corresponding changes in the liqu... | 06/19/2007 |
| 7228740 | Noninvasive characterization of a flowing multiphase fluid using ultrasonic interferometry An apparatus for noninvasively monitoring the flow and/or the composition of a flowing liquid using ultrasound is described. The position of the resonance peaks for a fluid excited by a swept-frequency ultrasonic signal have been found to change frequency both in re... | 06/12/2007 |
