Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 8187988 | Blue glass composition intended for the manufacture of windows The invention relates to a glass composition of silica-soda-lime type colored blue which comprises the coloring agents below in a content varying within the following limits, by weight: | 05/29/2012 |
| 8187986 | Optical glass The invention provides a novel optical glass which has a refractive index (nd) of 1.78 to 2.2 and an Abbe value (νd) of 16 to less than 40 and is suitable for precision mold press molding by virtue of its having a low glass transition temperature, namely, an optica... | 05/29/2012 |
| 8183169 | Phosphate glass, fluorophosphate glass, preform for precision press-molding, optical element and process for the production of thereof A fluorophosphate glass having a fluorine content of 25% or more by anionic %, which is produced from a glass raw material containing 0.1 to 0.5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine, and a phosphate glass... | 05/22/2012 |
| 8183168 | Process for producing electrode-formed glass substrate A lead-free glass for covering electrodes including, as represented by mass % based on the following oxides, from 30 to 50% of B2O3, from 21 to 25% of SiO2, from 10 to 35% of ZnO, from 7 to 14% in total of K2O and either o... | 05/22/2012 |
| 8184427 | Multilayer ceramic capacitor and method for production thereof Disclosed is a multilayer ceramic capacitor which has a dielectric ceramic having a dielectric layer, wherein the dielectric layer mainly comprises barium titanate, contains a crystalline particle having an average crystal diameter of 0.15 to 0.3 μm, and contains M... | 05/22/2012 |
| 8183171 | Dielectric ceramic composition To provide a dielectric ceramic composition which is free from variation in breakdown voltage, and has excellent electric properties. The dielectric ceramic composition according the present invention includes: as a main component, a component represented by a compo... | 05/22/2012 |
| 8183170 | Contrast-enhancing UV-absorbing glass and articles containing same Disclosed are CuX-containing, Nd2O3-containing, UV-absorbing and contrast-enhancing glasses and article comprising the same. The glass has improved UV-absorption and color enhancing capabilities compared to glasses described in the prior art. T... | 05/22/2012 |
| 8178454 | Optical glass and optical apparatus using the same An optical glass includes a substance A generating light of a wavelength λ2 when irradiated with light of a wavelength λ1 and a substance B generating light of a wavelength λ3 when irradiated with light of the wavelength λ1 in the case where the optical glass in... | 05/15/2012 |
| 8178453 | Non-lead glass To provide a glass containing little B2O3, whereby when its powder is fired, its thermal expansion curve does not have an inflection point, a non-lead glass is provided containing, as represented by mol % based on the following oxides, from 35 ... | 05/15/2012 |
| 8178459 | Corrosion-resistant member and method of manufacturing same A corrosion-resistant member includes a ceramic member containing yttrium oxide as a main component, containing cerium element, and obtained by firing under a nonoxidizing atmosphere. The corrosion-resistant member that has high corrosion-resistant characteristics a... | 05/15/2012 |
| 8178458 | Dielectric ceramic composition A dielectric ceramic composition is disclosed. The dielectric ceramic composition of the present invention comprises BaTiO3 as the main component and one or more subcomponents. The one or more subcomponents include Sc2O3, MgCO3 | 05/15/2012 |
| 8178456 | Sintered dielectric ceramic, composition for making, and use thereof in multilayer capacitor and energy storage device A batch powder composition for preparing a non-ferroelectric, sintered dielectric ceramic; a multilayer ceramic capacitor thereof; and an energy storage device. The batch powder contains a titanate powder of at least one of CaTiO3, SrTiO3, or C... | 05/15/2012 |
| 8178455 | Alumina sintered body, method for manufacturing the same, and semiconductor manufacturing apparatus member A method for manufacturing an alumina sintered body of the present invention comprises: (a) forming a mixed powder containing at least Al2O3 and MgF2 or a mixed powder containing Al2O3, MgF2, and MgO ... | 05/15/2012 |
| 8178452 | Optical glass An optical glass having a refractive index (nd) within a range from 1.825 to 1.870, an Abbe number (νd) within a range from 22 to less than 27, a transformation temperature (Tg) within a range from 530° C. to 585° C. and an mean coefficient of linear thermal expa... | 05/15/2012 |
| 8173563 | Sintered body and production method thereof An object is to provide a sintered body causing less chipping and having a sufficiently higher polishing rate than a conventional AlTiC sintered body, and providing a sufficiently smooth air bearing surface. The sintered body according to the present invention consi... | 05/08/2012 |
| 8173281 | Ceramic sinter, magnetic head substrate using the same, magnetic head and recording medium drive unit A ceramic sintered body contains Al2O3 crystal grains, internal TiC crystal grains existing in the Al2O3 crystal grains and external TiC crystal grains other than the internal TiC crystal grains. The Al2O3 ... | 05/08/2012 |
| 8173560 | Glass yarns capable of reinforcing organic and/or inorganic materials The invention relates to a glass strand, the chemical composition of which is substantially free of boron oxide and comprises the following constituents, in the limits defined below expressed as percentages by weight: | 05/08/2012 |
| 8168552 | Method of refining glass and product obtained The subject of the invention is a method of refining glass for which the temperature (T log 2) corresponding to a viscosity of 100 poise (10 Pa·s) is greater than or equal to 1480° C., characterized in that sulfides are used as a refining agent. It also relates to... | 05/01/2012 |
| 8168555 | Ceramic substrate, process for producing the same, and dielectric-porcelain composition A ceramic substrate is provided as one having a large coefficient of thermal expansion α, having properties suitable for use as a high-frequency substrate, being capable of being fired at a low temperature, and having an excellent substrate strength. The ceramic su... | 05/01/2012 |
| 8168553 | Optical glass, method of making the optical glass, optical elements made with the optical glass and uses thereof The lead- and arsenic-free optical glass has a refractive index nd of 1.55≦nd≦1.64, an Abbe number νd of 42≦νd≦65, and a low transition temperature Tg≦460° C., good producibility and processability, and crystallization stability. The optical glass has a... | 05/01/2012 |
| 8163665 | Optical glass An optical glass having refractive index (nd) exceeding 1.85, Abbe number (νd) of 36 or over, comprising SiO2, B2O3, La2O3, Gd2O3, Ta2O5 and Li2O as essent... | 04/24/2012 |
| 8163666 | Taphole mix It is intended to provide a taphole mix capable of forming SiC bonds with minimum of an excess and a deficiency in components thereof, and excellent in drillability. A fine particle fraction having a particle diameter of 75 μm or less is comprised of three componen... | 04/24/2012 |
| 8158543 | Fining agents for silicate glasses A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at... | 04/17/2012 |
| 8156763 | Method of producing glass Provided is a method of producing a glass, including, in order to obtain an excellent refining effect: preparing a raw glass batch including: an antimony compound containing pentavalent antimony; and an oxidizing agent (a cerium oxide, a sulfate, a nitrate); and mel... | 04/17/2012 |
| 8153540 | Soda-lime-silica glass composition for a display screen The invention relates to the field of display screens, especially plasma screens. One subject of the invention is a glass composition which comprises the constituents below in the following weight proportions: | 04/10/2012 |
| 8148280 | Optical glass An optical glass of the present invention has optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (νd) within a range from 35 to 45, comprises SiO2 and B2O3 as essential components and on... | 04/03/2012 |
| 8148283 | Aluminum nitride sintered body A high-purity aluminum nitride sintered body is provided by efficiently removing oxides contained in a raw material powder in producing an aluminum nitride sintered body and preventing composite oxide produced by reaction of oxides contained in the raw material powd... | 04/03/2012 |
| 8148282 | Method of solid PCBN sythesis The invention generally relates to a sintered CBN composite compact having a non-CBN portion. The compact includes about 86 to about 90% CBN and the non CBN portion contains borides and nitrides of Al. The compact is for use as a cutting tool insert in continuous ma... | 04/03/2012 |
| 8143181 | Nonlinear optic glassy fiber, methods of making and applications of the same A process for producing an optical glass fiber from crystal-glass phase material. In one embodiment, the process includes the step of providing a molten crystal-glass phase material in a container, wherein the temperature of the molten crystal-glass phase material i... | 03/27/2012 |
| 8143178 | Blue beta-quartz glass-ceramic materials, articles made thereof, and fabrication process The present invention discloses a blue transparent glass-ceramic material comprising β-quartz solid solution as a predominant crystalline phase and process for making same. The glass-ceramic comprises TiO2 as a nucleating agent, sulphur and at least one ... | 03/27/2012 |
| 8142565 | Vitreous silica crucible for pulling single-crystal silicon A vitreous silica crucible for pulling single-crystal silicon, which is formed of vitreous silica and has a bottomed cylindrical shape, wherein, in a liquid-level movement range in the inner surface of the crucible, ranging from a position corresponding to the liqui... | 03/27/2012 |
| 8143179 | Transparent, colorless titania-free beta-quartz glass-ceramic The invention relates to a transparent and essentially colorless β-quartz glass-ceramic material which is free of TiO2, As2O3, Sb2O3 and phosphates; articles formed from said glass-ceramic material; lithium alu... | 03/27/2012 |
| 8143180 | Honeycomb cement with ceramic-forming crystallizable glass and method therefor Disclosed are cements for ceramic honeycomb bodies. Such cements can be applied to a fired ceramic honeycomb body then fired, or can be applied to an unfired (green) honeycomb body and co-fired with the green honeycomb body. The cement can also be used to plug one o... | 03/27/2012 |
| 8138109 | Zirconia-mullite refractory raw material and a plate brick Provided is a zirconia-mullite refractory raw material which is less likely to undergo alternation and microstructural degradation under high-temperature conditions, and low in thermal expansion rate, so as to have thermal shock resistance and corrosion resistance. ... | 03/20/2012 |
| 8137610 | Molding compound for producing a fireproof lining Disclosed is a molding compound for producing a fireproof lining, especially for a combustion chamber of a stationary gas turbine. The molding compound is characterized particularly by the fact that the molding compound is formed from more than about 50 percent by w... | 03/20/2012 |
| 8138110 | Fireproof ceramic mix, fireproof ceramic molded body formed of said mix and use thereof The invention relates to a refractory ceramic batch made of 30 to 95% by mass of a synthetically manufactured fine component selected from the group consisting of: fused forsterite, sintered forsterite, each in a grain size | 03/20/2012 |
| 8133830 | Silicon nitride sintered compact and sliding member using the same A silicon nitride sintered compact contains silicon nitride grains, and a sintering aid component in a range of 2 to 15 mass %. The silicon nitride grains include needle crystal grains each having a long diameter L of 10 μm or less and a ratio (L/S) of the long dia... | 03/13/2012 |
| 8129301 | Molding compound for producing a fireproof lining Disclosed is a molding compound for producing a fireproof lining, especially for a combustion chamber of a stationary gas turbine. Said molding compound is characterized particularly by the fact that the molding compound is formed from more than about 50 percent by ... | 03/06/2012 |
| 8127570 | Optical glass A high-refractivity low-dispersion optical glass that can be stably supplied and has excellent glass stability and that has coloring reduced, comprises, by mass %, 5 to 32% of total of SiO2 and B2O3... | 03/06/2012 |
| 8127571 | Method of refining a lithium aluminosilicate glass and glass-ceramic obtained The present invention relates to a method of refining lithium aluminosilicate glass capable of being controllably ceramized and free of arsenic oxide, antimony oxide and tin oxide, in which at least 0.05% by weight of at least one sulfide is added to the glass batch... | 03/06/2012 |