Vapor Deposition Patents (Class 427/107)
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Patent number: 8980114Abstract: A film in a dry state is efficiently dissolved and removed. A film removing method includes steps of moving a nozzle head (10B) close to a soluble film (201) formed on a substrate (200), forming a liquid pool (302) of chemical liquid (300) between the nozzle head (10B) and the film (201) by continuously and simultaneously discharging and sucking the chemical liquid (300) from the nozzle head (10B), and horizontally moving the substrate (100) in a state in which the nozzle head (10B) and the surface of the film (201) are not contacted so as to relatively move the liquid pool (302) of the chemical liquid on the substrate (100).Type: GrantFiled: April 11, 2012Date of Patent: March 17, 2015Assignee: Tazmo Co., Ltd.Inventor: Yoshinori Ikagawa
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Patent number: 8252382Abstract: The present invention relates to an aluminum wheel having high gloss and a method for manufacturing the same, and the method for manufacturing an aluminum wheel having high gloss includes the steps of: (i) coating a primary coating powder paints for increasing a flatness of an aluminum wheel having a rough surface and improving an adhesive force to a silver mirror coating surface, (ii) forming of silver coating layer forming a mirror surface having a high gloss and high reflectivity on the powder paints coated surface using a silver coating solution, and (iii) forming at least one transparent top coating for protecting the silver mirror surface and increasing an abrasion resistance and a saltwater resistance after the step (ii). In accordance with the present in an aluminum wheel having high gloss and high reflectivity can be manufactured in a simple processes and relative inexpensive cost.Type: GrantFiled: April 28, 2007Date of Patent: August 28, 2012Assignee: Inktec Co., Ltd.Inventors: Kwang-Choon Chung, Hyun-Nam Cho, Seong-Yong Uhm
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Patent number: 7238262Abstract: A system and method of coating curved substrates and assembling devices having coated elements. The system and method are of particular utility in the manufacture of lamps having a coating formed on the hermetically sealed light emitting chamber of the lamp. The system and method includes, inter alia, an improved uniform coating process and apparatus, improved throughput in the coating process, a reduction in bad coating losses, improved baking processes, and an improved method and apparatus for aligning the filament of a halogen lamp achieved by performing the step of coating of the light emitting chamber prior to the step of sealing the chamber.Type: GrantFiled: March 29, 2000Date of Patent: July 3, 2007Assignee: Deposition Sciences, Inc.Inventors: Leroy A. Bartolomei, H. Robert Gray
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Patent number: 6887354Abstract: A method for applying a coating (23) to a part of a surface of a lamp (20). The aim is to provide a simple manner of applying exact coatings to parts of surfaces with complicated designs. To this end, the lamp is vacuum-coated. The parts of the surface of the lamp (20) that are not to be coated are covered by a mask (3) and at least one coat is applied to the non-covered parts of the surface. The mask (3) is located at a predetermined distance (d) from the part of the surface of the lamp (20) and the mask (3) is oriented in relation to an illumination element (2) or a base (21) of the lamp (20). The invention also relates to a coated lamp that is produced according to a method of this type.Type: GrantFiled: September 7, 2001Date of Patent: May 3, 2005Assignee: SIEMENS AktiengesellschaftInventors: Bernd Karras, Ursus Krüger, Uwe Pyritz, Raymond Ullrich
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Patent number: 6440284Abstract: The present invention provides methods of electrophoretically separating macromolecular species, as well as compositions and systems useful in carrying out such methods. Specifically, the methods of the present invention comprise providing a substrate that has at least a first capillary channel disposed therein. The surface of the channel has a first surface charge associated therewith, and is filled with a water soluble surface adsorbing polymer solution that bears a net charge that is the same as the charge on the capillary surface.Type: GrantFiled: December 17, 1999Date of Patent: August 27, 2002Assignee: Caliper Technologies Corp.Inventor: Robert S. Dubrow
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Patent number: 6042710Abstract: The present invention provides methods of electrophoretically separating macromolecular species, as well as compositions and systems useful in carrying out such methods. Specifically, the methods of the present invention comprise providing a substrate that has at least a first capillary channel disposed therein. The surface of the channel has a first surface charge associated therewith, and is filled with a water soluble surface adsorbing polymer solution that bears a net charge that is the same as the charge on the capillary surface.Type: GrantFiled: May 11, 1999Date of Patent: March 28, 2000Assignee: Caliper Technologies Corp.Inventor: Robert S. Dubrow
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Patent number: 5863596Abstract: A method of manufacturing the cathode ray tube comprises, cleaning the front panel, heating for drying the front panel, forming an visible light absorbing layer on the front panel by spraying a first ethyl silicate solution, forming the antistatic layer on the front panel by spraying a second ethyl solution, and baking the front panel to harden the nonglare film.Type: GrantFiled: February 21, 1996Date of Patent: January 26, 1999Assignee: Sony CorporationInventors: Kunio Kojima, Takashi Setsuda, Takumi Takamura, Kouichi Kaneko, Hideo Kusama
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Patent number: 5843518Abstract: A method for making a tantala/silica interference filter on a vitreous substrate, which filter retains integrity at temperatures in excess of 600.degree. C., includes the steps of depositing by low pressure chemical vapor deposition a first coating of tantala/silica on the substrate, heat treating the first coating, and depositing by low pressure chemical vapor deposition a second coating of tantala/silica, the first and second coatings in combination providing a tantala/silica interference filter with a thickness of at least 3.5 microns on the vitreous substrate. There is further presented an electric lamp having an envelope and an interference filter applied thereto, in accordance with the above method.Type: GrantFiled: January 9, 1997Date of Patent: December 1, 1998Assignee: Osram Sylvania Inc.Inventors: Hongwen Li, Gautam Bandyopadhyay, Keith A. Klinedinst, Joseph E. Lester
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Patent number: 5667607Abstract: A process for fabricating a blue-emitting SrS:Ce based electroluminescent device, which improves in brightness and blue color purity of the electroluminescent device, is disclosed. The blue-emitting luminescent layer of the device is formed as follows: a luminescent layer based on strontium sulfide (SrS) with cerium (Ce) doped at a concentration in a range of 0.01% by atomic or higher but less than 0.3% by atomic is deposited; and then heat treatment is applied thereto at a temperature in a range of 400.degree. C. or higher but 550.degree. C. or lower before forming any other layer thereon.Type: GrantFiled: August 1, 1995Date of Patent: September 16, 1997Assignee: Nippondenso Co., Ltd.Inventors: Kazuhiko Sugiura, Masayuki Katayama, Nobuei Ito, Tadashi Hattori
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Patent number: 5658612Abstract: A method for making a tantala/silica interference filter on the surface of a tungsten-halogen incandescent lamp having molybdenum leads includes depositing on the lamp surface by low pressure chemical vapor deposition the interference filter comprising alternating layers of tantala and silica. Thereafter, the filter is heat treated in an atmosphere of humidified inert gas containing less than 1% oxygen.Type: GrantFiled: September 29, 1995Date of Patent: August 19, 1997Assignee: Osram Sylvania Inc.Inventors: Hongwen Li, Keith A. Klinedinst
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Patent number: 5648115Abstract: A method for making a tantala/silica interference filter on a vitreous substrate, the filter retaining integrity at temperatures in excess of 600.degree. C., includes the steps of applying to the vitreous substrate a first coating of vitreous silica doped with submicron-sized particles, depositing on the first coating by low pressure chemical vapor deposition the filter which comprises a second coating comprising alternating layers of tantala and silica, and heat treating the substrate and first and second coatings to bond the filter to the substrate. There is further provided an electric lamp having an envelope made in accordance with the above method.Type: GrantFiled: August 23, 1995Date of Patent: July 15, 1997Assignee: Osram Sylvania Inc.Inventors: Gautam Bandyopadhyay, Keith A. Klinedinst, Silvia E. Lichtensteiger
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Patent number: 5382205Abstract: A control device for an internal combustion engine (E) and a continuous variable transmission (35) according to the present invention is disposed in a power transmission method (P) between the internal combustion engine (E) mounted on a vehicle and driving wheels (32) and of which transmission ratio can be continuously changed at a predetermined transmission speed Vm so as to maintain the transmission ratio i suitable for engine speed .omega.e and vehicle speed Vc. In addition, the device controls power of the internal combustion engine (E).The control device for an internal combustion engine (E) and a continuous variable transmission (35) sets the transmission speed Vm according to a deviation .DELTA.i between an objective transmission ratio io and an actual transmission ratio in to control the continuous variable transmission (35) at the transmission speed Vm. On the other hand, it controls the power of the internal combustion engine (E) by means of transmission auxiliary torque .DELTA.Type: GrantFiled: January 7, 1993Date of Patent: January 17, 1995Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Kazuhide Togai, Takashi Takatsuka, Makoto Shimada, Junji Kawai, Kazuya Hayafune
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Patent number: 5098326Abstract: A method for applying a protective coating to the inner surface of the arc tube of a high-intensity metal halide discharge lamp involves dosing the arc tube with an inert gas that is doped with a metal hydride gas. Preferably, the metal hydride gas comprises silane. The arc tube is heated to a sufficiently high temperature to decompose the silane gas. As a result, silicon is deposited as a protective coating on the inner surface of the arc tube wall. The hydrogen gas that is generated by the silane decomposition is removed from the system either by pumping it out before dosing the arc tube with the final arc tube fill, or by diffusion through the arc tube wall during operation of the lamp.Type: GrantFiled: December 13, 1990Date of Patent: March 24, 1992Assignee: General Electric CompanyInventors: Thomas Gorczyca, Harald L. Witting
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Patent number: 5032762Abstract: A protective beryllium oxide coating of suitable thickness is applied to the inner surface of the arc tube of a high-intensity, metal halide discharge lamp in order to avoid a substantial loss of the metallic portion of the metal halide fill and hence a substantial buildup of free halogen, thereby extending the useful life of the lamp. A preferred lamp structure includes a fused silica arc tube. The beryllium oxide coating is preferably applied to the arc tube by evaporating beryllium in the arc tube under non-oxidizing conditions, and then heating in an oxidizing atmosphere.Type: GrantFiled: July 16, 1990Date of Patent: July 16, 1991Assignee: General Electric CompanyInventors: Henry S. Spacil, Ronald H. Wilson
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Patent number: 4952422Abstract: A fluorescent lamp containing a Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 coating on a layer of yttrium vanadate phosphor and a method of coating the layer of the yttrium vanadate phosphor with a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 is described. The method comprises applying a coating of a metal, such as yttrium or aluminum, on the yttrium vanadate phosphor then lehring the metallic coating at about 500.degree. C. to about 625.degree. C. to form a continuous protective coating of Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 overlaying the layer of phosphor.Type: GrantFiled: February 29, 1988Date of Patent: August 28, 1990Assignee: GTE Laboratories IncorporatedInventors: Romano G. Pappalardo, Thomas E. Peters, Roger B. Hunt, Jr.
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Patent number: 4949005Abstract: Thin film interference filters consisting of alternating layers of tantala and silica suitable for high temperature use on electric lamps have been made by heat treating at 550.degree.-675.degree. C. before using the filters at high temperature. Tungsten halogen lamps made with such heat treated filters have been thermally cycled for thousands of cycles at 900.degree. C. with no film loss and with satisfactory optical performance.Type: GrantFiled: November 14, 1988Date of Patent: August 14, 1990Assignee: General Electric CompanyInventors: Thomas G. Parham, Seshu Desu, Charles D. Tschetter
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Patent number: 4797302Abstract: The electric lamp has a lamp vessel (1) of which a wall portion (4) is mirror-coated at its inner surface with an aluminum layer. This wall portion (4) has a boundary (5) near the largest diameter (2) of the lamp vessel (1). This boundary (5) is adjoined by a zone (10) coated with a transparent aluminum oxide layer. In the lamp, a dark zone caused by a very thin aluminum layer adjoining the boundary (5) is avoided.Type: GrantFiled: December 23, 1987Date of Patent: January 10, 1989Assignee: U.S. Philips Corp.Inventors: Johannes W. Ingeveld, Albert J. Westerhof
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Patent number: 4713259Abstract: For the reactive deposition of tubular bodies of electrically conductive material from a flowing gas phase on a tubular substrate, a glow discharge 11 is produced between an inner electrode 6 and an outer electrode 2, one of which is constructed so as to be tubular and serves as a substrate. It is ensured that the electrodes 2, 6 are not short-circuited by growing conductive surface layers so that the glow discharge 11 extinguishes. Furthermore, the electrically conductive coating on the electrode 6 which does not function as the substrate electrode is interrupted in an insulating manner to locally limit the glow discharge 11. For example, by a gas barrier the deposit of an electrically conducting material on the insulation can be avoided. The glow discharge 11 is reciprocated during the deposition process.Type: GrantFiled: April 28, 1986Date of Patent: December 15, 1987Assignee: U.S. Philips CorporationInventors: Georg F. Gartner, Peter A. Janiel, Hans-Jurgen Lydtin
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Patent number: 4508991Abstract: A halogen cycle incandescent lamp with a bulb of soft glass, the inner suce of the bulb being depleted of alkali ions to avoid a reaction between the halogen constituents of the filling gas and the alkali constituents of the bulb glass. The vacancies thus generated in the glass lattice may be filled by replacement ions such as Li, Mg, Ca and/or the bulb may be coated with a protective layer of a metal and/or semi-metal oxide such as SiO.sub.2, TiO.sub.2, B.sub.2 O.sub.3. The sodium ions are removed from the bulb glass by preferably hydrogen chloride or hydrogen bromide gas which acts on the bulb at a temperature between 500.degree. C. and the softening point of the glass. The vacancies are filled by bringing the inner surface of the bulb in contact with molten salts or solutions of salts of Li, Mg or Ca. The protective layer is applied by introducing a metal halide and/or semi-metal halide e.g., TiCl.sub.4 or SiCl.sub.4 into the bulb which forms metal oxide and/or semi-metal oxide e.g., TiO.sub.2 or SiO.sub.Type: GrantFiled: September 14, 1982Date of Patent: April 2, 1985Assignee: Patent Treuhand-Gesellschaft fur elektrische Gluhlampen mbHInventors: Ewald Wurster, Albert Heidemann
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Patent number: 4438152Abstract: In a process of gaseous opalization a film of silica is formed by an oxidation reaction with a dry gas containing oxygen. Pure oxygen or oxygen diluted in an inert gas, other than nitrogen, may be used. An electric arc is generated by an alternating voltage between 5,000 and 10,000 volts and is directed at a chlorinated silicon compound, entrained by the dry gas containing oxygen, the feeding of which gas carrier does not form silica on the electrodes which generate the arc. This process may be applied to the opalization of incandescent and discharge bulbs of various sizes including tubes and globes of lighting apparatus.Type: GrantFiled: May 5, 1982Date of Patent: March 20, 1984Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jean-Paul Barbier, Gilbert Lerouyer
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Patent number: 4436762Abstract: A protective refractory metal oxide coating of 3Al.sub.2 O.sub.3.2SiO.sub.2 or 3B.sub.2 O.sub.3.2SiO.sub.2 is coated on the internal surface of a vessel by low pressure plasma induced chemical reactions. The source of the SiO.sub.2 required for the reaction can either be from the internal surface of the vessel (e.g., glass, quartz) or it can be introduced into the vessel.Type: GrantFiled: July 26, 1982Date of Patent: March 13, 1984Assignee: GTE Laboratories IncorporatedInventors: Walter P. Lapatovich, Joseph M. Proud, Leslie A. Riseberg
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Patent number: 4401693Abstract: A method of making a heat-reflecting filter consisting of a tin-doped indium oxide layer on a carrier. A tin-doped indium oxide layer is provided on a carrier by spraying a heated carrier with a solution of an indium salt and a tin salt. The layer is then reduced at 350.degree.-400.degree. C. by means of a gas flow of hydrogen, nitrogen together with oxygen or air.Type: GrantFiled: November 16, 1981Date of Patent: August 30, 1983Assignee: U.S. Philips CorporationInventors: Gunter Frank, Heiner Kostlin, Leo M. Sprengers, Ronald J. Campbell
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Patent number: 4385645Abstract: An apparatus for use in selectively coating all or a portion of the interior surface of a tubular article, the apparatus including a plurality of axially spaced apart masks adapted to fit within the tubular article, support structure spacing apart the masks, and an electrically conductive coating means between the masks. The coating means may be electrically activated to spray the unmasked portion of the inside surface of the tubular article.The apparatus is useful in making tubular articles which are coated on their interior surfaces at selective locations. An alternative embodiment of the apparatus includes masks which have been chamfered. When this alternative apparatus is used to coat the interior surface of the interconnect, a non-uniform coating is delivered to the ends of the area which are coated. Using this alternative apparatus, a stress graded coating may be applied to the selectively coated interior surface.Type: GrantFiled: July 6, 1982Date of Patent: May 31, 1983Assignee: Raychem CorporationInventors: Bruce D. Campbell, Lynn O. Chapman
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Patent number: 4374157Abstract: Glass bulbs are given a deposit of silica by oxidation of silane with oxygen on the inside of the bulb. The silica deposit is formed by oxidation, with oxygen through an electric arc, of silane diluted to a slight concentration of 0.1 to 3% by volume in a gas inert in regard to silane. The process applies to opalizing, i.e. providing a light diffusing layer, incandescent and discharge bulbs of different sizes, including tubes, and globes of lighting fixtures.Type: GrantFiled: August 28, 1981Date of Patent: February 15, 1983Assignee: L'Air LiquideInventors: Jean-Paul Barbier, Gilbert Lerouyer
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Patent number: 4360546Abstract: A lamp envelope comprised of silica glass having a SiO.sub.2 --B.sub.2 O.sub.3 glass layer on an inner surface thereof is coated on the free surface of such SiO.sub.2 --B.sub.2 O.sub.3 glass layer with a protective layer comprised of a silica glass having a lower B.sub.2 O.sub.3 amount relative to the B.sub.2 O.sub.3 amount in the SiO.sub.2 --B.sub.2 O.sub.3 glass layer.Type: GrantFiled: March 29, 1982Date of Patent: November 23, 1982Assignee: Siemens AktiengesellschaftInventors: Hartmut Schneider, Josef Grabmaier
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Patent number: 4357368Abstract: A film of photoemissive material, such as antimony, is vaporized from a platinum-antimony source onto a substrate in an enclosure. The source is preferably a plurality of beads formed by attaching substantially spherical particles of platinum-antimony (50--50 by atomic volume) to a platinum-clad molybdenum wire. The spherical particles are accurately sized so that each bead comprises substantially the same amount of antimony. The beads are symmetrically arranged about the substrate so that upon evaporation a substantially uniform film of photoemissive material is deposited on the substrate.Type: GrantFiled: December 26, 1978Date of Patent: November 2, 1982Assignee: RCA CorporationInventors: Richard W. Longsderff, Dale V. Henry
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Patent number: 4293593Abstract: Energy-conserving incandescent lamp wherein the envelope has provided on the interior surface thereof a very efficient and economically applied heat mirror which is highly transmissive for visible radiations and highly reflective for infrared radiations, thereby to enhance the conversion of electric energy to visible energy. The heat-mirror coating comprises a two layer Ag/TiO.sub.2 or a three layer TiO.sub.2 /Ag/TiO.sub.2 coating of predetermined thickness. The three layer coating is formed by first applying to the envelope interior surface a thin layer of clear aliphatic alcohol solution having contained therein partially hydrolyzed metallic alkoxide which substantially comprises titanium alkoxide, and which solution contains at most only a limited amount of selected mineral acid. The applied clear solution layer is heat treated to convert same to a thin continuous layer substantially comprising titania.Type: GrantFiled: October 12, 1979Date of Patent: October 6, 1981Assignee: Westinghouse Electric Corp.Inventor: Bulent E. Yoldas
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Patent number: 4293594Abstract: Method for forming conductive, transparent coating such as may be used on the interior surface of a vitreous tubular member. In a carrier gas and exterior to the member to be coated, there is formed a vapor from a material substantially comprising organic tin halide compound having a predetermined condensation temperature and a predetermined decomposition temperature, with the temperature of the carrier gas and the formed vapor maintained between these temperatures. The member to be coated is heated to a temperature greater than the decomposition temperature of the organic tin halide compound and the heated carrier gas and formed vapor are longitudinally flowed through the heated tubular member. Upon contact with the heated tubular member, the vapor breaks down to form the transparent conducting coating. The carrier gas and residual heated vapor are flowed out of the member being coated and are cooled to condense and collect the residual material.Type: GrantFiled: August 22, 1980Date of Patent: October 6, 1981Assignee: Westinghouse Electric Corp.Inventors: Bulent E. Yoldas, Douglas M. Mattox
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Patent number: 4277761Abstract: In glass bodied gas lasers which use helium as a constituent gas, the leakage of helium through the laser walls is controlled by a specially applied external sealed metal coating. The glass body of the laser is then used as a solid state helium reservoir. In addition, in all lasers with thermal problems, such as distortion and the like, this same specially applied metal coating serves to distribute the temperature evenly over the laser minimizing those thermal distortions.Type: GrantFiled: May 21, 1979Date of Patent: July 7, 1981Assignee: VTI, Inc.Inventors: Robert M. Silva, Fred D. Orazio, Jr.
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Patent number: 4265950Abstract: Improved adhesion of the phosphor coating in a fluorescent lamp having a transparent film of conductive material (such as tin oxide) on the inner surface of the bulb is obtained by adding small but correlated amounts of finely-divided aluminum oxide, calcium nitrate, and ammonium nitrate to the water-base phosphor-coating composition. The combination of additives bonds the phosphor particles to the bulb despite the intervening layer of tin oxide and the lower lehring temperature required to preserve its conductivity. When the conductive film is composed of a material which can tolerate higher lehring temperatures, other additives such as barium nitrate, cadmium nitrate and strontium nitrate can be substituted for or admixed with the calcium nitrate.Type: GrantFiled: November 27, 1979Date of Patent: May 5, 1981Assignee: Westinghouse Electric Corp.Inventor: Eugene A. Graff
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Patent number: 4198585Abstract: The gas discharge panel described here is an AC plasma display panel with electrodes arranged on a substrate, and the electrodes and substrate are coated with a dielectric layer for insulation from the gas filled discharge space, with an improvement in the dielectric layer surface. The improvement being an overcoat layer of at least two alkaline earth compounds, especially CaO and SrO, provided on the dielectric layer surface of this display panel. This overcoat layer significantly lowers the operating voltages of the panel.Type: GrantFiled: November 18, 1976Date of Patent: April 15, 1980Assignee: Fujitsu LimitedInventors: Hideo Yamashita, Shizuo Andoh, Tsutae Shinoda
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Patent number: 4192902Abstract: A method of toner formation wherein a dispersion of magnetic pigment, resin, solvent and surfactant is spray dried to form the toner particles. Two preferred processes are disclosed: (1) A dispersion of magnetite, resin, fatty acid, and solvent is prepared by high speed agitation. The dispersion is then spray dried to form toner particles. (2) A dispersion of magnetite, fatty acid and solvent is subject to reflux heating, followed by addition of resin solution prior to spray drying to form toner particles.Type: GrantFiled: May 2, 1977Date of Patent: March 11, 1980Assignee: Xerox CorporationInventor: Chin H. Lu
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Patent number: 4156558Abstract: A liquid crystal device comprising a liquid crystal layer intermediate a substrate coated by a surfactant and another substrate coated by a photoconductive and a surfactant thereover that is manufactured by taking cleaned electrically conductive transparent substrates and depositing a photoconductor such as cadmium sulfide to one with thereafter treating that one so as to coat it with a surfactant and at the same time coat the other substrate with a surfactant before joining the substrates with a liquid crystal therebetween whose molecules are oriented by the said surfactant.Type: GrantFiled: August 4, 1977Date of Patent: May 29, 1979Assignee: Grumman Aerospace CorporationInventor: Alex Grumet
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Patent number: 4089991Abstract: An improved method for providing electrical conductive paths in a Dewar flask is disclosed. A thin metal film is deposited over the side and top of the inner flask of the Dewar. Portions of the metal film are then selectively removed to provide electrical conductive paths which extend from the side on to the top of the inner flask.Type: GrantFiled: April 7, 1977Date of Patent: May 16, 1978Assignee: Honeywell Inc.Inventor: Gene A. Robillard
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Patent number: 4042006Abstract: A band-shaped metal layer useful as a resistance layer and/or a contact layer is pyrolytically deposited onto a cylindrical substrate by surrounding the surface of the substrate with a mixture of a thermally decomposable metal compound and a carrier therefor and substantially simultaneously heating only precise surface areas of the substrate, as by a laser beam, to a temperature slightly above the thermal decomposition temperature of the metal compound and moving the substrate in a rotational and/or axial manner so that a band-shaped metal layer forms only at the heated surface areas of the substrate.Type: GrantFiled: October 22, 1975Date of Patent: August 16, 1977Assignee: Siemens AktiengesellschaftInventors: Alfred Engl, Guenther Heim
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Patent number: 4042727Abstract: A light diffusion coating for an electric lamp is described which comprises a thin layer of spherical alumina particles that have been vapor-deposited in a certain particle size range to provide more effective light scattering. The coatings are deposited upon the interior surface of the sealed glass envelope and have been found especially useful for incandescent lamps as well as for such other lamps as electric discharge lamps.Type: GrantFiled: September 29, 1975Date of Patent: August 16, 1977Assignee: General Electric CompanyInventors: David C. Henderson, Kenneth M. Maloney
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Patent number: 4022929Abstract: The invention relates to a method of aluminizing the inside of the panel of a television picture tube. When aluminizing the inside of the panel, blisters caused by the vaporizing lacquer, are likely to develop in the layer of aluminum, especially on the side walls of the panel portion. When taking care in accordance with the invention, that the coat of lacquer is roughened prior to the performance of the aluminizing process, these blisters are avoided.Type: GrantFiled: October 6, 1975Date of Patent: May 10, 1977Assignee: International Standard Electric CorporationInventors: Eberhard Nill, Peter Schmidt
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Patent number: 4021218Abstract: This invention relates to a chemical method of strengthening glass articles subjected to abrasion resistance treatment, which comprises (1) a first step of applying a metal oxide-forming compound to the surface of a heated glass article to form the corresponding metal oxide coating having a thickness of 50 to 130 Angstrom on the surface of the glass article, (2) a second step of causing to adhere, to the outer and inner surfaces of the glass article, a mixed solution of potassium chloride and potassium nitrate, having a potassium chloride to potassium nitrate ratio by weight of 85 to 45:15 to 55, or a mixed solution of potassium sulfate and potassium nitrate, having a potassium sulfate to potassium nitrate ratio by weight of 30 to 100:70 to 0, (3) a third step of holding the glass article at an elevated temperature below the strain point of the glass but as near the strain point as possible for a period of time sufficient to obtain a compressive stress layer having a depth of at least 10 microns and a compresType: GrantFiled: November 13, 1975Date of Patent: May 3, 1977Assignee: Yamamura Glass Kabushiki KaishaInventor: Muneo Watanabe
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Patent number: 3984590Abstract: Electric discharge lamps of extended life can be produced or cheaper materials used in their manufacture by providing on the internal surface of the envelope and on the exposed surfaces of internal components a protective coating of a metal phosphate or arsenate glass. External surfaces can also be protected against corrosion in air or in the atmosphere within an outer jacket, where this is employed. The coating may be applied in a liquid medium which, preferably after draining, is warmed to evaporate the medium and thereafter baked to form the vitreous coating.Type: GrantFiled: April 3, 1975Date of Patent: October 5, 1976Assignee: Thorn Lighting LimitedInventors: David Robert Mason, Susan Margaret Cole, Maurice Arthur Cayless, David Osborn Wharmby
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Patent number: 3982046Abstract: Tungsten-halogen lamps of extended life are obtained by coating internal surfaces of the discharge tube and exposed surfaces of internal components with metal phosphate or arsenate glasses. The preferred glass is aluminium titanium phosphate. The coatings may be formed by applying a liquid composition capable of generating the desired phosphate or arsenate to the surfaces to be coated, and subsequently heating them to remove the liquid medium and form a vitreous coating. The medium may be water or an organic solvent such as an alcohol, and may contain a dissolved compound of the metal and an oxyacid of phosphorus or arsenic.Type: GrantFiled: April 3, 1975Date of Patent: September 21, 1976Assignee: Thorn Lighting LimitedInventors: David Robert Mason, Susan Margaret Cole, John Michael Rees, James Richard Coaton
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Patent number: 3961926Abstract: A method for forming optical fibers reduces losses of germania dopant due to evaporation during chemical vapor deposition. After deposition of a high purity silica layer on the inner surface of a hollow silica tube, the tube is closed at one end and loaded with a small amount of crystalline germanium compound, such as germanium iodide. The other end is then also sealed and the tube is heated to vaporize the GeI.sub.4 and deposit a coating of germanium. This process may be repeated to build up the Ge layer. The tube is then broken open at both ends and the iodine vapor removed. The germanium layer is oxidized and heated to diffuse germania into the silica layer to provide a doped high index of refraction core layer on a lower index cladding layer. The tube and layers are then collapsed to form a preform which is later drawn into the optical fiber.Type: GrantFiled: December 27, 1974Date of Patent: June 8, 1976Assignee: International Telephone and Telegraph CorporationInventor: Adolf R. Asam