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| Number | Title | Issue Date |
| 7397190 | Gas discharge lamp for extreme UV radiation The invention relates to a gas discharge lamp for EUV radiation with an anode (1) and a hollow cathode (2), wherein the hollow cathode (2) has at least two openings (3, 3′) and the anode (1) has a through hole (4), which i... | 07/08/2008 |
| 7319287 | Electron emission device with grid electrode The present invention relates to an electron emission device in which a high voltage can be properly applied to anode electrodes by improving a pattern of apertures of a grid electrode to reduce a diode emission. In an exemplary embodiment of the present invention, ... | 01/15/2008 |
| 7095169 | Flat panel display device A flat panel display device capable of reducing charging of phosphors and disposing spacers easily and accurately. The flat panel display device has a rear substrate including an insulating substrate provided with many cold cathode elements for emitting electrons, a... | 08/22/2006 |
| 6774550 | Charged particle beam extraction and formation apparatus A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputter deposits ... | 08/10/2004 |
| 6590324 | Charged particle beam extraction and formation apparatus A charged particle apparatus, with multiple electrically conducting semispheric grid electrodes, the grid electrodes mounted in a dielectric mounting ring, with hidden areas or regions to maintain electrical isolation between the grid electrodes as sputte... | 07/08/2003 |
| 6534923 | Electron source An electron source including a nanostructured carbon electron-emitting film and an electron extraction grid spaced closely adjacent the surface of said film.... | 03/18/2003 |
| 5914067 | Microwave oven equipped with a structurally simple microwave generating apparatus A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode, the first grid having holes for converting electrons from the cathode to the electron beams, a choke structur... | 06/22/1999 |
| 5883368 | Microwave frequency energy generating apparatus provided with a voltage converting means An apparatus for generating a microwave frequency energy includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the cathode, a choke structure for serving as a capacitor, wherein the cathode, the fi... | 03/16/1999 |
| 5883367 | Microwave oven equipped with a structurally simple apparatus for generating a microwave frequency energy A microwave oven includes a cooking chamber, a waveguide, and an apparatus for generating a microwave frequency energy. The apparatus includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the catho... | 03/16/1999 |
| 5883369 | Structurally simple apparatus for generating a microwave frequency energy An apparatus for generating a microwave frequency energy includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the cathode, a choke structure for serving as a capacitor, wherein the cathode, the fi... | 03/16/1999 |
| 5850074 | Microwave oven equipped with a microwave generating apparatus designed to reduce secondary electron emission A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode. The first grid has holes for converting electrons from the cathode to the electron beams and a metal film for... | 12/15/1998 |
| 5841114 | Microwave oven equipped with a microwave output controlling apparatus A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode, the first grid having holes for converting electrons from the cathode to the electron beams, a choke structur... | 11/24/1998 |
| 5783900 | Large-area electron irradiator with improved electron injection A broad-beam high energy electron accelerator has an electron injection section arranged for increased current density with greater uniformity and higher transmission through the foil exit window. A plurality of cathode rods are disposed in a transverse p... | 07/21/1998 |
| 5465023 | Carbon-carbon grid for ion engines A method and apparatus of manufacturing a grid member for use in an ion discharge apparatus provides a woven carbon fiber in a matrix of carbon. The carbon fibers are orientated to provide a negative coefficient of thermal expansion for at least a portion... | 11/07/1995 |
| 5448883 | Ion thruster with ion optics having carbon-carbon composite elements Carbon-carbon elements for ion optics sets are thermomechanically stable under the extreme temperature changes that are experienced in ion thrusters. The elements described include screen and accelerator grids and methods of producing such grids. The desc... | 09/12/1995 |
| 5332945 | Pierce gun with grading electrode A Pierce electron gun is provided having a cathode, a focusing electrode surrounding the cathode, and an anode disposed a fixed distance from the cathode and having an opening therethrough. The electron gun has at least one grading electrode disposed betw... | 07/26/1994 |
| 5126633 | Method of and apparatus for generating uniform elongated electron beam with the aid of multiple filaments A novel electron beam apparatus and technique wherein a plurality of longitudinally extending heated filaments is employed, each similarly offset laterally of a central longitudinal axis, but with successive filaments alternately disposed on opposite side... | 06/30/1992 |
| 4994709 | Method for making a cathader with integral shadow grid A very fine-mesh, non-emissive shadow grid is formed on the smooth emissive surface 16 of a thermionic cathode 12 by deposition from a vapor a continuous layer 22 of non-emissive conductive material. Between the elements 24 of the grid the non-emissive ma... | 02/19/1991 |
| 4745326 | Method of manufacturing integral shadow gridded controlled porosity, dispenser cathodes A controlled porosity dispenser cathode and method of manufacture therefo using chemical vapor deposition and laser drilling, ion milling, or electron discharge machining for consistent and economical manufacturing a cathode with pores on the order of 0.... | 05/17/1988 |
| 4745324 | High power switch tube with Faraday cage cavity anode A high-power switch tube is shown constructed from a plurality of electron guns each gun having a cathode and an anode. Between the cathode and anode is mounted a shadow grid closest to the cathode beyond which is mounted a control grid, a screen grid, an... | 05/17/1988 |
| 4503357 | Cathode-ray tube A cathode-ray tube has in a neck section of a hermetically sealed, evacuated envelope an electron-gun mount assembly in which of a cathode for emitting an electron beam, a first grid electrode section for forming a crossover point and for accelerating the... | 03/05/1985 |
| 4501990 | Electron tube, especially transmitting tube, with a device for eliminating interfering retarding-field effects Electron tube assemble having coaxial electrodes and grids, including a tube with given electrode trajectories and oscillation period, and interfering retarding-field effect elimination means disposed around the tube for generating a magnetic field having... | 02/26/1985 |
| 4405878 | Bonded grid-cathode electrode structure A variety of technologies have been applied in the development of a bonded rid cathode. Erosion lithography is used for making the fine-detail grid structure, combining air erosion and lithographic techniques. To obtain openings of the order of 0.001 inch ... | 09/20/1983 |
| 4302701 | Directly heated cathode for an electron tube with coaxial electrode design In an exemplary embodiment, a transmitting tube has a coaxial design of the electrodes and their lead-ins and includes a cathode formed of a hollow cylinder which is secured at one end to an annular cathode lead, and at the other end is secured to a catho... | 11/24/1981 |
| 4302702 | Thermionic cathode having an embedded grid, process for its fabrication, and high frequency electron tubes using such a cathode The invention relates to metal oxide activated porous tungsten cathodes and methods of their manufacture. A cathode 1 of porous tungsten activated by metal oxides is mounted on a housing 2 which has a heating filament 3. On the outer face of the cathode t... | 11/24/1981 |
| 4295077 | Circumferentially apertured cylindrical grid for electron tube An improved high power electron tube has at least one grid electrode. The grid electrode is formed from a one piece cylindrical member, closed at one end, having an outside diameter, D. The cylindrical member has a plurality of arcuate, circumferentially ... | 10/13/1981 |
| 4147953 | Cathode construction for linear beam tubes A linear beam tube is provided with a gridded electron gun in which a concave cathode surface is provided with concave channels from which electrons are emitted. The channels may be arranged as concentric annuli. In a preferred embodiment the channels ext... | 04/03/1979 |
| 4145635 | Electron emitter with focussing arrangement An electron emitter comprises field emitter zones formed by projections of field emissive material separated by regions which are not field emissive. An extractor electrode for applying an electric field to the projections and a focus electrode have openi... | 03/20/1979 |
| 4100450 | Method of and apparatus for generating longitudinal strips of energetic electron beams This disclosure deals with novel techniques for generating longitudinal strips of energetic electron beams through concentric slotted constructions, being quite adaptable for the generation of multiple beams in different directions that are of very narrow... | 07/11/1978 |
| 4076992 | Vacuum tube grid structures of phosmic bronze having copper and copper alloy conical supports A vacuum tube includes a cylindrical cathode around which a frusto-conical control grid extends. The control grid, which is made out of Phosnic bronze, has its larger diameter end attached to the smaller end of a first hollow truncated copper cone. A cyli... | 02/28/1978 |
| 4059784 | Electron-beam converter The electron-beam converter comprises at least one of each of the following components: a cathode, an anode and, accelerating and control electrodes. The anode has a surface orthogonal with respect to a diverging electron flow and is arranged with respect... | 11/22/1977 |
