Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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 |
| 7978823 | Cascade voltage amplifier and method of activating cascaded electron tubes Disclosed is a cascade voltage amplifier for producing an amplified output in pulse or continuous wave form comprises at least one non-final stage with an electron tube configured as a switching and Class A or C amplifying structure. A final stage comprises an elect... | 07/12/2011 |
| 7852986 | Power supply for an X-ray generator system A power supply for generating a high output voltage for supplying an X-ray generator system with at least one X-ray source (17), especially for computer tomography (CT) applications is disclosed, wherein the high output voltage comprises at least two differen... | 12/14/2010 |
| 7844030 | System and method of fast switching for spectral imaging A system includes a generator configured to output at least one voltage level and an x-ray source configured to generate x-rays directed toward an object. The system includes a module coupled to the output of the generator and to an input of the x-ray source and con... | 11/30/2010 |
| 7742573 | Fast switching circuit for x-ray imaging applications A system is provided, which includes a rotatable gantry for receiving an object to be scanned. The system includes an x-ray source for projecting x-rays of two different energy levels towards the object and also a power supply, which energizes the x-ray source to tw... | 06/22/2010 |
| 7577235 | Voltage generator of a radiation generator A voltage divider of a voltage generator is provided. The divider comprises an input terminal opposite an output terminal, a measurement resistor electrically connected in series between the input terminal and the output terminal, a footer resistor electrically conn... | 08/18/2009 |
| 7431500 | Dynamic exposure control in radiography A method and system is presented in radiography for optimizing image quality of an object (e.g. an anatomical region of a patient), while minimizing the radiation dose to the patient. X-ray exposure parameters, such as operating voltage (kVp), operating current (mA)... | 10/07/2008 |
| 7397896 | X-ray device An X-ray device having an X-ray source, a high voltage generator supplying power to the X-ray tube and an inverter to generate, at the output end, an AC input voltage for the high voltage generator is disclosed. Provision is made therein for a resonance network to b... | 07/08/2008 |
| 7362844 | Tomography appliance, and method for a tomography appliance A tomography appliance and method for a tomography appliance make it possible to calculate, in a simple and efficient manner, detector-element-related coefficients of an intensity function dependent on the detector output signal and to calculate the X-ray-emitter-re... | 04/22/2008 |
| 7340035 | X-ray tube cathode overvoltage transient supression apparatus An imaging tube (30) includes multiple high voltage elements (64). A voltage-clamping device (70) is coupled between the high voltage elements (64) and prevents the occurrence of overvoltage transients in the minor insulation of an imagin... | 03/04/2008 |
| 7298826 | X-ray generator An X-ray generator of this invention has an X-ray monitor that monitors a state of an X-ray emitted from a target. Hence the state of the X-ray can be monitored in real time to maintain the X-ray in a constant state. The X-ray monitor is positioned off the path on w... | 11/20/2007 |
| 7286642 | X-ray tube control apparatus and x-ray tube control method A maximum tube voltage value setting module 240a, a warming-up module 240b, a limit tube voltage control module 240c, a limit tube current control module 240d and a focus grid electrode control module 240 | 10/23/2007 |
| 7286641 | Method and device for exposing x-ray images The invention relates to a method of controlling the exposure of an X-ray image. Starting values for the tube current, the tube voltage and the exposure duration are hereby set on the X-ray tube (10). Following the start of the exposure, the resultant dose ra... | 10/23/2007 |
| 7151818 | X-Ray tube driver using AM and FM modulation Circuit arrangements and methods are disclosed for providing means of driving a grounded anode triode X-Ray tube using one isolation transformer, providing both filament power and controllable grid drive without the need for optical isolation devices. Applications o... | 12/19/2006 |
| 7145988 | Sealed electron beam source A sealed electron beam source (12) for an imaging tube (16) is provided. The beam source (12) includes a source housing (50) with a source window (54) having a first voltage potential and a source electrode (52) having a sec... | 12/05/2006 |
| 7127031 | Radiation imaging apparatus, radiation imaging system and radiation imaging method A radiation detector includes radiation detection elements for detecting radiations which have penetrated an object as electric signals, with the elements arranged in a two-dimensional array, and an image display controller for producing a radiation image of the obj... | 10/24/2006 |
| 7110500 | Multiple energy x-ray source and inspection apparatus employing same A multiple energy x-ray source capable of rapidly generating and delivering x-rays in the form of successive pulses that alternate between at least two different energy levels, as well as a multiple energy x-ray inspection apparatus for inspecting moving objects tha... | 09/19/2006 |
| 7079623 | X-ray unit for the generation of brief X-ray pulses and inspection device operating with such an X-ray unit An invention related to an X-ray device for the generation of brief X-ray pulses comprising an X-ray tube having a thermionic cathode and an anode and an X-ray generator having a first circuit for the generation of a high-voltage pulse which is applied to the anode ... | 07/18/2006 |
| 7016468 | X-ray tube preheat control A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and ... | 03/21/2006 |
| 7012988 | Method of controlling X-ray and X-ray apparatus therefor The invention relates to a method of controlling an X-ray apparatus containing an X-ray emitter. Control means for the X-ray apparatus are provided with exposure time correction data for given mains voltages and the current mains voltage is measured before and/or du... | 03/14/2006 |
| 6961407 | Device to detect pressure in an x-ray tube In a method to detect the pressure in an x-ray tube having a cathode of the x-ray tube that is heated with a heater current, and wherein electrons are accelerated between the cathode and an anode by an applied x-ray tube voltage, the heater current is measured, a tu... | 11/01/2005 |
| 6944268 | X-ray generator An X-ray generator comprises a cathode electrode (15), a grid electrode (17) for controlling an electron beam (e) generated by the cathode electrode (15), a focus electrode (18) for focusing the electron beam (e), and an anode target (... | 09/13/2005 |
| 6836529 | Method and apparatus of CT imaging with voltage modulation A system and method of diagnostic imaging with reduced x-ray exposure to the scan subject during scanning includes acquiring a set of cardiac signals or other motion (cardiac mechanical motion or respiratory motion) related signals and determining and imaging profil... | 12/28/2004 |
| 6836534 | High voltage transformer The conventional high voltage elements (1, 8) constituting it are located in such a way that the ground level (2) is situated in the central zone and from this zone the negative potential progressively increases towards one of the ends (3) while... | 12/28/2004 |
| 6816573 | X-ray generating apparatus, X-ray imaging apparatus, and X-ray inspection system The voltage applied to a first grid electrode 71 of an X-ray tube 11 by a grid voltage control section 110 is controlled with reference to a predetermined negative voltage from a negative voltage generating section 112 when an object 5... | 11/09/2004 |
| 6768786 | Circuit arrangement and method for generating an x-ray tube voltage A circuit arrangement for generating an X-ray tube voltage is described, wherein a switching device, connected downstream of a voltage controller (Gsu) and a oscillating current controller (Gri), operable to compare a first controlling variable... | 07/27/2004 |
| 6473491 | Method and x-ray device using adaptable power source A method described includes positioning an x-ray emitter at a treatment area, where the x-ray emitter is connected to a cable, setting a voltage source at a source voltage, and measuring a current through the x-ray emitter. The method may include comparin... | 10/29/2002 |
| 6215850 | X-ray beam control for an imaging system The present invention, in one form, includes methods and apparatus for reducing the x-ray dosage to a patient in a medical imaging system. In accordance with one embodiment of the present invention, a switching unit, or circuit, is coupled to a x-ray tube... | 04/10/2001 |
| 6198802 | Scanning beam x-ray source and assembly A compact x-ray source and assembly is disclosed. The x-ray source is configured to operate without the need of a transformer within the x-ray source. Due in part to the elimination of components, and further due to the unique assembly of the x-ray source... | 03/06/2001 |
| 5731968 | X-ray apparatus comprising a power supply section for powering an X-ray tube An X-ray apparatus, includes a power supply section for powering an X-ray tube (4) with a high-voltage transformer (3) which has two groups of primary and secondary windings provided on the same transformer core, the coupling between the primary windings ... | 03/24/1998 |
| 5602897 | High-voltage power supply for x-ray tubes An x-ray tube of a CT scanner is powered by a high-voltage power supply (26). The high-voltage power supply includes a plurality of sections (102) each having three straight-up transformers (48) which receive three 120° phase shifted alternating current ... | 02/11/1997 |
| 5567997 | Three-value power supply device and image forming apparatus utilizing the same Disclosed is a three-value power supply device, adapted for supplying developing bias voltages to a copying machine. The device comprises a positive high voltage source, a negative high voltage source, first and second high voltage transistors serially co... | 10/22/1996 |
| 5517545 | X-ray apparatus This invention aims at providing an X-ray apparatus having a stable X-ray output. Since the focus electrode of the X-ray tube of the X-ray apparatus according to this invention maintains a ground potential, the focus diameter of electrons bombarded agains... | 05/14/1996 |
| 5495165 | High-voltage power supply and regulator circuit for an x-ray tube with transient voltage protection A high-voltage power supply and regulator circuit for an X-ray tube which utilizes solid state switching devices and provides protection against failure of the switching devices due to transient voltage spikes. The high-voltage protection circuit includes... | 02/27/1996 |
| 5402461 | X-ray computed tomography apparatus An X-ray computed tomography apparatus includes a rotating frame section, an X-ray generating system mounted on the rotating frame section, electric power transmission means constituted by a slip ring and a brush and designed to supply electric power to t... | 03/28/1995 |
| 5400387 | Indirect measurement of voltage applied to diagnostic x-ray tubes A CT system includes a pair of detectors in its detector array which measure x-ray intensity from a source after passing through a differential x-ray filter. The ratio of the signals produced by these two detector elements are input to a KV calculator whi... | 03/21/1995 |
| 5396532 | X-ray diagnostics installation having means for forming a transparency signal In an x-ray diagnostics installation for mammography, an automatic setting of the optimum beam quality ensues in combination with transparency matching. A set of exposure parameters corresponding to different thicknesses of the examination subject is stor... | 03/07/1995 |
| 5388139 | High-voltage power supply and regulator circuit for an X-ray tube with closed-loop feedback for controlling X-ray exposure Apparatus for supplying operating power to an X-ray generating source, wherein the source sends a radiation signal to a patient and a portion of the signal which passes through the patient is utilized to produce an image of the patient, the apparatus comp... | 02/07/1995 |
| 5319696 | X-ray dose reduction in pulsed systems by adaptive X-ray pulse adjustment An interactive system for producing acceptable quality fluoroscopy images determines X-ray tube photon count and voltage while minimizing X-ray radiation dosage to a subject. Parameters of the subject and the type of image to be produced are provided to t... | 06/07/1994 |
| 5241260 | High voltage power supply and regulator circuit for an X-ray tube with transient voltage protection A high-voltage power supply and regulator circuit for an X-ray tube which utilizes solid-state switching devices with feedback control for real time monitoring and protection against failure due to excess current or voltage spikes. The apparatus includes ... | 08/31/1993 |
| 5159697 | X-ray tube transient noise suppression system An X-ray imaging apparatus has a vacuum tube with an envelope that contains an anode, a cathode and a filament. A motor has a rotor mechanically connected to the anode inside the envelope and a stator on the exterior of the envelope. The vacuum tube and t... | 10/27/1992 |
