Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7898265 | Microwave paint thickness sensor A microwave paint thickness sensor includes a single cylindrical cavity, a microwave source, and a signal detector. The cylindrical cavity is open at one end, the open end having a choke joint for interfacing with a painted surface. The cylindrical cavity is designe... | 03/01/2011 |
| 7800378 | Microwave resonator for or on a textile machine, especially a card, draw frame, combing machine or the like A microwave resonator for or on a textile machine, especially a card, draw frame, combing machine or the like, for attachment to a measuring device for measuring the mass and/or moisture content of textile fiber material conveyable continuously through a resonator c... | 09/21/2010 |
| 7532015 | Microwave spectroscopy probe A microwave spectroscopy probe has a center conductor between a first ground plane and a second ground plane. A dielectric member has fluid channel between the center conductor and the first ground plane. ... | 05/12/2009 |
| 7362108 | Method and system for measurement of sidewall damage in etched dielectric structures using a near field microwave probe By using techniques for near field probes to measure dielectric values of blanket films, the measure of the sidewall damage of the patterned structure is calculated. The interaction between the near field probe and the etched structure is modeled to obtain the model... | 04/22/2008 |
| 7351288 | Shock absorbing fluidic actuator According to one aspect of the invention, a fluidic actuator and a control system for the fluidic actuator may be provided. A first component of the actuator may have two openings interconnected by a passageway. A second component may be moveably housed within the p... | 04/01/2008 |
| 7352194 | Method for determining the thickness of a coating on a composite material The invention relates to a method for determining the thickness of a coating on a composite material by applying induced currents wherein the composite material together with its coating is placed on a conducting material, in which circulating electric currents indu... | 04/01/2008 |
| 7336590 | Dielectric reproducing apparatus, dielectric recording apparatus, and dielectric recording/reproducing apparatus A dielectric reproducing apparatus is provided with: a probe for applying an electric field to a dielectric material of a dielectric recording medium; a return electrode for returning the electric field applied from the probe; an inductor placed between the probe an... | 02/26/2008 |
| 7330271 | Electromagnetic resonant sensor with dielectric body and variable gap cavity An electromagnetic resonant sensor has a dielectric sensor body through which electromagnetic wave energy is propagated. The sensor body has a cavity, with surfaces facing one another to define a gap that varies as a function of a parameter to be measured. The reson... | 02/12/2008 |
| 7323798 | Microwave displacement measurement system for an electrodynamic direct drive An electrodynamic direct drive includes an armature that travels within a housing and a drive system for moving armature in relation to housing. The drive system has two drive means, that are moved in relation to each other in the form of a coil system with at least... | 01/29/2008 |
| 7299683 | Metal particle sensor system A metal particle sensor system for detecting metal particles in an oil line. The metal particle sensor system may include a metal particle sensor positioned about the line, an orifice positioned within the line and downstream of the metal particle sensor, a first pr... | 11/27/2007 |
| 7292045 | Detection and suppression of electrical arcing Method and apparatus for detecting or suppressing electrical arcing or other abnormal change in the electrical impedance of a load connected to a power source. Preferably the load is a plasma chamber used for manufacturing electronic components such as semiconductor... | 11/06/2007 |
| 7285963 | Method and system for measurement of dielectric constant of thin films using a near field microwave probe A measurement technique based on a microwave near-field scanning probe is developed for non-contact measurement of dielectric constant of low-k films. The technique is non-destructive, non-invasive and can be used on both porous and non-porous dielectrics. The techn... | 10/23/2007 |
| 7278186 | Ultra low frequency moisture sensor An apparatus for measuring a moisture content value within a volume. A frequency generator generates at least one source signal at frequencies of no more than about one kilohertz. Probes are disposed with surfaces in physical contact with the volume, where no direct... | 10/09/2007 |
| 7275418 | Method for the quantitative detection of two contaminants in a fluid The quantitative determination of two contaminants of a fluid is carried out in the following steps: detection of permittivity ε and viscosity v of the fluid; determination of the quantity of the first contaminant 11e on the basis of a difference betw... | 10/02/2007 |
| 7261007 | Circumferential slot virtual impactor for concentrating aerosols A circumferential slot virtual impactor includes a disk-shaped housing with an endless circumferential slot for receiving aerosols. The slot forms an acceleration nozzle, and a receiver nozzle spaced apart radially inwardly from the acceleration nozzle exit. In an a... | 08/28/2007 |
| 7239150 | Pavement material microwave density measurement methods and apparatuses A method of obtaining a material property of a pavement material from a microwave field generally includes generating a microwave frequency electromagnetic field of a first mode about the pavement material. The frequency response of the pavement material in the elec... | 07/03/2007 |
| 7236120 | Ultra-wideband detector systems for detecting moisture in building walls A non-destructive detection method and system enables detecting a moisture patch located inside a building wall or the like. A transmitter generates a series of ultra-wideband pulses while an ultra-wideband antenna unit, preferably in the form of an antenna array in... | 06/26/2007 |
| 7227434 | Tuning screw assembly The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displaced in ... | 06/05/2007 |
| 7223608 | Resonance-enhanced dielectric sensing of chemical and biological species A dielectric sensing method and apparatus are provided for detection and classification of chemical and biological materials. Resonance patterns of a sample within a resonator are detected for identifying a shift in resonance frequency and a change of line width bef... | 05/29/2007 |
| 7205782 | Scanned impedance imaging system method and apparatus The resolution and contrast of impedance measurements and scans are improved by using a non-contact impedance probe comprising an inner conductor configured to bear a measurement signal and an outer conductor configured to bear a shielding signal. The measurement si... | 04/17/2007 |
| 7199591 | Method of measuring relative dielectric constant of dielectric substance of powders, cavity resonator used in the same, and application apparatus A relative dielectric constant of a mixed substance consisting of powders and a liquid medium is calculated, and then the relative dielectric constant of the mixed substance or a relative dielectric constant of the liquid medium is calculated as a relative dielectri... | 04/03/2007 |
| 7194141 | Image resolution conversion using pixel dropping A system for generating image conversion data is provided. The system includes a numerator buffer storing numerator data of a conversion ratio, such as where the numerator of the ratio represents the relative current size of a set of image data and the denominator o... | 03/20/2007 |
| 7190177 | Method and apparatus for nondestructive sample inspection An apparatus for inspecting a sample for defects includes a signal generator for generating a signal and a device for splitting the signal into two separate signals which have substantially equal phase and magnitude. A sensor radiates the two signals on the sample a... | 03/13/2007 |
| 7173435 | Thickness measuring apparatus and method using a microwave cavity resonator A measurement device for measuring a thickness of a film layer over a substrate utilizes a microwave source and a resonant cavity having an open side. A microwave signal is introduced at a first end of the resonant cavity with the open side against a surface measure... | 02/06/2007 |
| 7149180 | Apparatus for recording information in and/or reproducing information from a ferroelectric recording medium A dielectric recording medium in a disc form is provided with: a center hole; an inner area; a recording area; and an outer area, arranged concentrically from the inside in this order. The inner area, the recording area, and the outer area contain a uniform and flat... | 12/12/2006 |
| 7135869 | Thickness measuring systems and methods using a cavity resonator Film thickness measurement systems and methods are provided that utilize a signal generator having a Gunnplexer design and a resonant frequency detector to correlate the shift in resonant frequency experienced by a resonant cavity having one face abutting a test obj... | 11/14/2006 |
| 7132836 | Microwave measuring arrangement for product density measurement The invention relates to a measuring arrangement for measuring the density of a product by means of microwaves. The measuring arrangement comprises a first microwave resonator, from which, in operation, microwaves enter a product area, and a device for compensating ... | 11/07/2006 |
| 7105787 | Reverberating adaptive microwave-stirred exposure system A method and apparatus for adaptively maintaining the power-frequency spectrum in a reverberation chamber. The invention is thus capable of maintaining a relatively constant power-frequency spectrum in the chamber even when a device under examination is placed into ... | 09/12/2006 |
| 7107165 | Markers used in the calculation and display of band functions A user interface for an electronic instrument includes a display that displays a signal and a band marker. The band marker demarks a bandwidth of the signal by marking both a start frequency of the bandwidth and a stop frequency of the bandwidth. The electronic inst... | 09/12/2006 |
| 7095944 | Distance measuring device and method for determining a distance The invention relates to a distance measuring device and a suitable method for determining a distance which provides for continuous determination of the distance—which can therefore also be made discrete—and in addition is easy to handle and provides for a large... | 08/22/2006 |
| 7091427 | Apparatus using resonance of a cavity to determine mass of a load A scale is provided, the scale including a cavity having a resonant frequency which is alterable with variations in mass of a load applied to the cavity. The scale also typically includes a comparator operatively coupled with the cavity to detect actual resonant fre... | 08/15/2006 |
| 7075314 | Method and apparatus for measuring complex dielectric constant of dielectric An electromagnetic wave is input to a resonator 14 filled with a dielectric and a gas, and a resonance frequency, an insertion loss and a half-power width in the resonance mode of the electromagnetic wave output from the resonator 14 are measured by a ... | 07/11/2006 |
| 7068048 | Microwave sensor for measuring a dielectric property of a product The application relates to a microwave sensor for measuring a dielectric property, especially the density and/or moisture content of a product, having a microwave resonator, wherein a product introduced into the resonator interacts with a resonant microwave field ge... | 06/27/2006 |
| 7061220 | Passive radio frequency power spectrum analyzer A spectrum analyzer includes a resonator board that in turn has a substrate and a plurality of resonators. Each resonator may include a first segment that includes a first segment discontinuity and that may also define a boundary and a second segment that has a seco... | 06/13/2006 |
| 7057398 | Microwave spectrometer An improved microwave spectrometer for measuring the concentration of ethylene oxide gas and the concentration of water vapor in one or more gas samples taken from an ethylene oxide sterilization chamber. ... | 06/06/2006 |
| 7034550 | Ferromagnetic resonance measurement A method of measuring ferromagnetic resonance properties of a structure including a non-ferrous material reinforced with steel members, the method includes applying a magnetic field to the structure using a magnet located adjacent the structure, directing microwave ... | 04/25/2006 |
| 7034549 | Device to detect and measure the concentration and characterization of airborne conductive or dielectric particles A measuring system is disclosed which detects and measures the volume concentration and mass flow of the airborne conductive particles, such as carbon-absorptive chaff particles. The measuring system can be used to estimate the effective conductivity of the detected... | 04/25/2006 |
| 7019654 | Contact potential difference sensor to monitor oil properties A method and system for contact potential sensing of dielectric properties of a fluid. The method and system include a contact potential sensor, an open or closed loop for passing a fluid past the sensor, measuring a contact potential to characterize dielectric prop... | 03/28/2006 |
| 6995572 | Sensor and method for detecting a superstrate Method and apparatus are provided for determining a superstrate on or near a sensor, e.g., for detecting the presence of an ice superstrate on an airplane wing or a road. In one preferred embodiment, multiple measurement cells are disposed along a transmission line.... | 02/07/2006 |
| 6989675 | Method and apparatus for precision measurement of film thickness An apparatus for measuring thickness in super-thin films consists of a special resonator unit in the form of an open-bottom cylinder which is connected to a microwave swept frequency microwave source via a decoupler and a matching unit installed in a waveguide that ... | 01/24/2006 |
