Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7791339 | RF-switched superconducting resonators and methods of switching thereof A multimode resonator resonating at two or more frequencies is operated at cryogenic temperatures and composed of a superconducting material or a normal metal with a superconducting section serving as a RF superconducting switch. The multimode resonator is coupled t... | 09/07/2010 |
| 7749772 | Antibody and immunoassays for determining the presence of Δ-Tetrahydrocannabinol Antibodies having specific binding for the parent THC (Δ9-THC) and its major metabolites are provided which present a significant increase in sensitivity of immunoassays such as lateral flow immunoassays and ELISA for THC. The present invention also prov... | 07/06/2010 |
| 7745781 | Real-time control of ion detection with extended dynamic range In a method controlling an ion detector, one or more ion input signals are received at the ion detector. A data point indicative of an intensity of at least one of the received ion input signals is acquired. Asynchronously with acquiring the data point, a drive volt... | 06/29/2010 |
| 7743790 | Shutter and gate valve assemblies for vacuum systems A shutter and gate valve assembly includes a valve housing that defines a passage therethrough, a valve member having a valve aperture, the valve member movable between a non-operating position that seals the passage and an operating position that aligns the valve a... | 06/29/2010 |
| 7701228 | Switchable manual/motor-driven NMR tuning systems and methods According to some embodiments, motor-tuned nuclear magnetic resonance (NMR) probes may be tuned manually without overcoming the tuning motor holding force. An NMR probe includes a switchable manual-mode/motor-driven mode capacitance-adjustment assembly for adjusting... | 04/20/2010 |
| 7701219 | Capacitor switches for NMR NMR (Nuclear Magnetic Resonance) capacitor switches allow for adjusting the resonant frequency ranges of NMR measurement circuits by inserting or removing capacitors having different values into the circuits. A change of position of a single switching member is used... | 04/20/2010 |
| 7701217 | NMR spiral RF probe coil pair with low external electric field RF electric fields produced by electric potential differences in NMR probe coil windings may penetrate the NMR sample and sample tube causing sensitivity loss and noise in NMR spectroscopy. Counter-wound spiral coils placed on the opposite surfaces of a planar subst... | 04/20/2010 |
| 7701123 | Electron source for ionization with leakage current suppression An electron source includes a first electrode, a second electrode, a thermionic element interposed between and electrically isolated from the first electrode and the second electrode, and a guard electrode interposed between and electrically isolated from the first ... | 04/20/2010 |
| 7651762 | Methods and devices using a shrinkable support for porous monolithic materials Articles of manufacture and devices and methods of forming and using the same are provided, wherein the article comprises a porous inorganic substrate contained in or bounded by a support made from an inorganic material are provided, wherein said porous substrate an... | 01/26/2010 |
| 7629575 | Charge control for ionic charge accumulation devices A method for controlling charge flux into a charge accumulation device includes determining a charge accumulation time during which charges are to be accumulated in the charge accumulation device, measuring a charge flux of a first ion beam produced from an ion sour... | 12/08/2009 |
| 7628915 | Metal cyano bonded phases A composition for use in chromatography is provided comprising a substrate modified with a metal-cyano bonded phase. This novel cyano bonded phase provides superior performance in high performance liquid chromatography (HPLC) and provides superior selectivity, impro... | 12/08/2009 |
| 7598738 | Complete structure elucidation of molecules utilizing single NMR experiment The complete structure of a molecule of interest is determined from a single NMR experiment utilizing a single NMR pulse sequence. The experiment utilizes the same pulse sequence for acquiring various one-dimensional and multi-dimensional spectra, with independent r... | 10/06/2009 |
| 7595641 | Electronic NMR reference signal systems and methods According to some embodiments, a synthetic nuclear magnetic resonance (NMR) reference signal is injected into the receive path of an NMR spectrometer, after the NMR probe and before the receive amplifier. The synthetic signal is generated using a transmit path for t... | 09/29/2009 |
| 7595350 | Ultraporous sol gel monoliths Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming an ultra porous sol-gel monolith include (a) forming a solution comp... | 09/29/2009 |
| 7595026 | Solid phase extraction pipette Solid phase extraction devices for sample preparation are disclosed, comprising a hollow conical tube having one narrower opening and one broader opening, wherein the narrower opening of the tube contains a solid phase extraction material comprising a functionalized... | 09/29/2009 |
| 7564029 | Sample ionization at above-vacuum pressures Sample material ionized in a sample receiving chamber is flowed into a sample conduit. Drying gas may also flow into the sample conduit and may be heated. The pressure and length of the sample conduit may be provided according to the product 50 or greater Torr−cm.... | 07/21/2009 |
| 7560922 | Low temperature susceptibility compensation The NMR device with a magnet utilizes a composition exhibiting a desired value of magnetic susceptibility, wherein the composition comprises a metal ion selected from the group consisting of Gd+3, Fe+3 and Mn+2 and an amorphous mater... | 07/14/2009 |
| 7557578 | Low loss NMR sample holder An elongate sample volume matching an elongate region of uniform RF magnetic field established by a saddle coil, is approximated by at least one pair of cylindrical sample tubes in parallel orientation with the geometric axis of the saddle coil. The displacement of ... | 07/07/2009 |
| 7547555 | Use of temperature and flow profiles in gradient elution based analytical process A method and apparatus are provided for optimizing a liquid chromatography/mass spectrometry system for gradient elution. A temperature profile is determined according to which a gas is flowed into an atmospheric pressure ionization interface for vaporizing a matrix... | 06/16/2009 |
| 7541807 | Rotor drive apparatus and methods utilizing center-fed radial-outflow gas A rotor drive apparatus includes a rotor and a stator. The stator has a gas injection orifice located on the axis about which the rotor spins. The gas injection orifice communicates with a bearing gap formed between a tapered surface of the rotor and an axially spac... | 06/02/2009 |
| 7501828 | Switchable birdcage coil A switchable birdcage coil functioning as a transmitter coil and a separate RF surface coil functioning as the receiver coil are utilize in NMR and MRI apparatus. To prevent the switchable birdcage coil from absorbing energy by coupling to the receiver coil or by ab... | 03/10/2009 |
| 7501623 | Two-dimensional electrode constructions for ion processing An electrode for use in a device such as an ion trap has an axial length extending generally in the direction of a central axis from a first axial end to a second axial end, and an inside surface. The inside surface includes a surface profile that is uniform from th... | 03/10/2009 |
| 7500381 | Systems and methods for trace gas leak detection of large leaks at relatively high test pressures Trace gas leak detectors and methods for trace gas leak detection of large leaks at relatively high test pressures are provided. A trace gas leak detector includes a test port to receive a sample containing a trace gas, the test port connected to a test line, a mass... | 03/10/2009 |
| 7497110 | Methods and apparatus for test gas leak detection A leak detector includes a leak detector inlet to receive a test gas, a vacuum pump coupled to the leak detector inlet, a test gas sensing unit connected through a passage to the leak detector inlet, to sense the test gas, a membrane that is permeable to the test ga... | 03/03/2009 |
| 7476330 | Low temperature susceptibility compensation An composition exhibiting a desired value of magnetic susceptibility, which can be used to fabricate components in an NMR device, and method thereof, wherein the composition comprises a metal ion selected from the group consisting of Gd+3, Fe+3 | 01/13/2009 |
| 7470900 | Compensating for field imperfections in linear ion processing apparatus An electrode structure for manipulating ions includes a main electrode and a compensation electrode. An outer surface of the main electrode includes a curved section that includes an apex. An aperture is generally disposed at the apex and extends along a radial cent... | 12/30/2008 |
| 7468281 | Hollow fiber membrane sample preparation devices Simultaneous sample purification, enrichment and analysis of pharmaceuticals, illicit drugs, pollutants, biotechnological products, synthetic organic reaction products and food/flavor ingredients from complex matrices can be performed using porous hollow fiber or po... | 12/23/2008 |
