Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7288495 | Photorefractive glass and optical elements made therefrom The present invention provides an alkali alumino-silicate Na—F-containing glass material and a method of making the alkali alumino-silicate Na—F-containing glass material, with the glass material capable of being made photosensitive and thus formed into optical ... | 10/30/2007 |
| 7265069 | Forehearth concentrate and method for opalization of glass The invention provides an opalescent forehearth color concentrate comprising a non-smelted agglomerated interspersion of particles for use in coloring glass, said concentrate comprising by weight from about 10% to about 70% of a glass component and from about 30% to... | 09/04/2007 |
| 6938968 | Vacuum insulating material and device using the same Vacuum heat insulator comprising a laminated core made of a plurality of sheets of inorganic fibers having 10 μm or smaller in diameter and a certain composition including SiO2 as a main component, Al2O3, CaO, and MgO, a gas barrier... | 09/06/2005 |
| 6698245 | Production of vitreous fibres using high halogen mineral waste as an ingredient Rock fibres are made from a melt formed from a blend of low and high halogen waste materials. 80 to 98% are low halogen materials (containing less than 0.5 wt. % halogen) and 2 to 20% are high halogen materials (containing at least 1 wt. % halogen).... | 03/02/2004 |
| 6563639 | Polarizing glasses Polarized glass articles and method of manufacturing polarizing glass articles are disclosed. Optical isolators using the polarizing glass articles have reduced coupling and surface losses when compared with conventional optical isolators.... | 05/13/2003 |
| 6499317 | Synthetic quartz glass and method for production thereof A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm-1 | 12/31/2002 |
| 6196027 | Method of making glasses containing spectral modifiers The invention is a method of making silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties. The phosphorus compound is generally a m... | 03/06/2001 |
| 6110583 | Glass article made from compositions containing spectral modifiers Silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties are disclosed. The phosphorus compound is generally a metal phosphide which i... | 08/29/2000 |
| 6107229 | Aluminofluorosilicate glass The invention relates to an aluminofluorosilicate glass for use in a material for dental restoration, which has the following features: a) a ratio of Al (calculated as Al2 O3) to Si (calculated as SiO2) of 0.57-1.12 by mass; b)... | 08/22/2000 |
| 6001753 | Spectral modifiers for glass compositions Silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties. The phosphorus compound is generally a metal phosphide which is added to the... | 12/14/1999 |
| 5709725 | Process for producing a glass melt A process for producing a glass melt by heating stock for glass comprising as the main ingredients oxides from which oxide glasses are to be formed into a melt, characterized in that said ingredients are formed into a homogeneous melt in the presence of a... | 01/20/1998 |
| 5639702 | Yellow colored glasses and methods of making same Glass colored in yellow, having transmission in the visible light range of the spectrum, which is produced by blending or adding an iodine compound to a matrix of glass having transmission in the visible light range of the spectrum or to the raw materials... | 06/17/1997 |
| 5420082 | Process of production of a glass intended to be transformed into continuous or staple fibers The invention provides a process which makes it possible to regulate the degree of oxidation-reduction of a glass during its production. According to the invention, which relates to glasses intended to be transformed into continuous or staple fibers conta... | 05/30/1995 |
| 5360770 | Fluoride ion-leachable glasses and dental cement compositions containing them A glass composition, containing barium oxide, which provides a source of leachable fluoride and which can be incorporated into a dental cement composition which, when cured, is radiopaque and translucent.... | 11/01/1994 |
| 5068209 | Optical fluorophosphate glass with anomalous positive incremental dispersion and process for making it An optical fluorophosphate glass with an anomalous positive incremental dispersion +Ɗ.nu.e between 11.8 and 12.5, a refractive index ne between 1.53 and 1.55 and an Abbe coefficient .nu.e between 72.8 and 73.5 has the fol... | 11/26/1991 |
| 4885019 | Process for making bulk heavy metal fluoride glasses Heavy metal fluoride glasses are made by a process that requires high purity fluoride constituent compounds fluorinated oxides, or premelted glass cullet. The charge is placed in an enclosed furnace chamber having the ability of atmosphere control, heat c... | 12/05/1989 |
| 4859634 | Process for production of vitreous ceramics and product thereof A complex oxide comprising zirconium oxide and an oxide of at least one metal selected from the group consisting of an alkali metals, alkaline earth metals, silicon and lead is mixed with pottery stone, magnesium fluoride, a compound capable of forming ma... | 08/22/1989 |
| 4842631 | Method of making carbon dioxide and chlorine free fluoride-based glass An improved method of making carbon dioxide and chlorine free fluoride-based glass wherein the atmosphere in the furnace enclosure is sulphur hexafluoride gas at a positive over pressure.... | 06/27/1989 |
| 4717691 | Fluoride glass compositions based on actinides or yttrium Fluoroglasses, their preparation and intermediate products obtained. These glasses are characterized by containing as the forming element at least about 10% by moles of a metal fluoride or mixture of metal fluorides of the formula MFn, n being ... | 01/05/1988 |
| 4717690 | Overglaze inks An overglaze ink comprising (a) 55 to 70 weight % of a glass composition, the glass composition comprising (1) 15 to 43 weight % of a main glass component selected from the group consisting of BaO, SrO and SrO+BaO, (2) a glass forming component comprising 34 t... | 01/05/1988 |
| 4680044 | Method of modifying the refractive index of fluoride glass The present invention relates to a method of producing a fluoride glass preform and/or fiber having a modified refractive index by heating the fluoride glass preform to a temperature that is above its glass transition temperature, but below its devitrific... | 07/14/1987 |
| 4666486 | Process for making bulk heavy metal fluoride glasses Heavy metal fluoride glasses are made by a process that requires high purity fluoride constituent compounds, some of which are further refined by sublimation. Handling occurs in a protective atmosphere such as argon. The charge is placed in a sealed modif... | 05/19/1987 |
| 4666870 | Fluoride glasses The invention relates to a beryllium free fluoride glass composition used to prepare fluoride glass and the fluoride glass prepared by the composition. The fluoride composition contains only fluoride compounds and does not contain any oxygen atoms.... | 05/19/1987 |
| 4647545 | Halogenated glasses Halogenated glass comprising 20 to 90 mole percent of at least one of cadmium, manganese and zinc halide and a process for the preparation thereof.... | 03/03/1987 |
| 4615988 | Glass fibers and a composition for manufacturing the same Glass fibers having the following constituents in the ranges of proportions indicated: SiO2, 57-70 wt. %; Al2 O3, 2-7 wt. %; CaO, 5-10 wt. %; MgO, 0-4 wt. %; B2 O3, 0-4.5 wt. %; and F, 0.5-4 wt. %; an... | 10/07/1986 |
| 4605632 | Glass for tungsten-halogen lamps This invention relates to the production of transparent, high silica glass envelopes for tungsten-halogen lamps consisting essentially, by weight, of 1-2.5% Al2 O3, 0.25-1% CaO, 0.1-0.25 Na2 O and/or K2 O, 2.5-3... | 08/12/1986 |
| 4597786 | Purifying process of fluoride glass A fluoride glass for infrared optical transmission fiber is purified for dehydration and deoxidation to reduce transmission loss by reacting melted fluoride glass with NF3 gas at temperature between 500° C. and 800° C. No scattering loss is i... | 07/01/1986 |
| 4560667 | Halogen glasses modified with carbon disulphide and process of preparation Halogen glass is treated, while heated above its fusion temperature, with carbon disulphide. The resulting halogen glass is essentially free of parasitic absorption bands in the infra-red spectrum. The treatment with carbon disulphide apparently lowers th... | 12/24/1985 |
| 4537864 | Metal fluoride glasses in the CdF2 -PbF2 -AlF3 -(LiF) system Novel halide glass-forming compositions in the CdF2 -AlF3 -PbF2 and CdF2 -AlF3 -PbF2 -LiF composition fields are disclosed which exhibit unusual glass stability. The constituents of these g... | 08/27/1985 |
| 4537862 | Lead-free and cadmium-free glass frit compositions for glazing, enameling and decorating Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1.9% by weight. The compositions conta... | 08/27/1985 |
| 4521523 | Methods of introducing fluorine into glasses A method of introducing fluorine into glasses characterized by high fluorine retention and low processing costs which involves introducing the fluorine into the glass batch as a fluorine-containing frit comprising an inorganic fluoride and containing from... | 06/04/1985 |
| 4521250 | Mixture for preparation of protective and insulating coatings on metals A mixture for preparation of protective and insulating coatings on metals and metal products which sticks well to metal surfaces, is resistant to high temperatures, has good electrical properties, and provides good heat removal. The mixture includes alumi... | 06/04/1985 |
| 4503158 | Double or mixed silicates of alkali metal and other glass modifier metal(s) used to prepare glass compositions An at least double silicate of an alkali metal and at least one other metal is prepared by interreacting (i) an aqueous solution of an alkali metal silicate and (ii) a solution of an oxide of such at least one other metal, or salt thereof, in the presence... | 03/05/1985 |
| 4483931 | Lead gallate glasses This invention is directed to the preparation of glasses in the PbO--Ga2 O3 field exhibiting good infrared transmitting characteristics out to wavelengths of 8 microns. The binary glasses consist essentially, by weight, of about 15-2... | 11/20/1984 |
| 4477579 | Electrode coating and coated electrodes Coating for carbon electrodes used as anodes in the electrolysis of alumina to produce aluminum are disclosed. The coatings are aqueous and contain zinc chloride and powdered alumina.... | 10/16/1984 |
| 4420569 | Alkali metal zirconofluorophosphate glasses This invention is directed to the production of glasses within the Li2 O-K2 O-ZrO2 -F-P2 O5 system having batch compositions as generally depicted in terms of mole percent in FIG. 2.... | 12/13/1983 |
| 4363879 | Alkaline fluoroborate in fluorophosphate glass free of beryllium Fluorophosphate glass free of beryllium with a refractive index ne between 1.40 and 1.46, an Abbe value ve between 85 and 94 and a high positive anomalous partial dispersion value +Ɗve between 19 and 28 is described. The ... | 12/14/1982 |
| 4362819 | Moldable fluoroaluminophosphate glasses The present invention is directed to the production of essentially dry alkali metal (R1) aluminofluorophosphate glasses optionally containing at least one divalent metal (R2) which exhibits a transition temperature below about 350° ... | 12/07/1982 |
| 4282019 | Glass manufacturing process with in-situ colemanite calcination and pollution abatement features Raw colemanite is introduced into the flue gas stream emanating in a combustion-fired furnace, which flue gas stream will contain boron values and if the glass being manufactured contains fluorine, will also containe fluorine values. This introduction pro... | 08/04/1981 |
| 4277274 | Process for controlling molten glass variables A process for controlling the composition, viscosity, resistivity or other variables of a molten glass by sensing temperature and resistivity or viscosity and making corrections in accordance with the deviation of the sensed properties and desired propert... | 07/07/1981 |
