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Class 501/31 - Uncombined silica containing (e.g., sand)


Subclass of Class 501 - Compositions: ceramic
Definition: Compositions which contain uncombined silica as an ingredient
No. of patents: 55
Last issue date: 02/05/2008


1    
NumberTitleIssue Date
7325417Glass composition with low visible and IR transmission
A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: ...
02/05/2008
7260960Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components
A method of controlling reaction paths of glass batch components added to a resident glass melt is provided, including the steps of providing a plurality of raw material batch components according to a batch recipe, selectively combining a portion of the batch compo...
08/28/2007
7153754Methods for forming porous insulators from “void” creating materials and structures and semiconductor devices including same
Methods for forming porous insulative materials for use in forming dielectric structures of semiconductor devices are disclosed. Each insulative material may include a first, substantially nonporous state and a second, porous state. When in the first state, the insu...
12/26/2006
6893991High silver borosilicate glasses
The invention relates to a melt-formed, high-silver, alkali-free, borosilicate glass that can be used for fabricating optical devices. For gradient index lenses, the glass can be subjected to an ion exchange process in order to introduce a less polarizable ion onto ...
05/17/2005
6679945Pyrogenically prepared silicon dioxide
Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value)D50ࣙ150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) ηࣘ100 m.multidot.Pas 3...
01/20/2004
6605555Methods of increasing the redox ratio of iron in a glass article
Glass is made from batch components having a source of ferrous iron to increase the starting amount of ferrous iron in the glass batch. The ferrous iron source is an iron silicate material, such as fayalite (2FeO.SiO2), iron garnet (3FeO.Fe
08/12/2003
6455107Prevention of oxidation of carbonaceous and other materials at high temperatures
A body of carbonaceous or other material for use in corrosive environments such as oxidising media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating ...
09/24/2002
6358870Method for preparing pre-reacted batches of raw materials for the production of glass formulas
A method for preparing pre-reacted batches of raw materials substantially free from carbon dioxide for the production of glass formulas, comprising: mixing stoichiometric amounts of substances containing molecular systems of silica-sodium, silica-sodium-c...
03/19/2002
6235666Grey glass composition and method of making same
A high LTa, low UV and IR transmittance grey glass employing as its colorant portion iron (Fe2 O3 /FeO), erbium (Er2 O3) and, optionally, titanium (TiO2). Enhanced effects are achieved by forming sepa...
05/22/2001
6196027Method 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
6110583Glass 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
6001753Spectral 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
5928974Glass production method using wuestite
A process and glass batch composition are provided for producing a soda-lime-silica glass containing oxides of iron. The process includes admixing, heating and melting a soda-lime-silica float glass batch mixture in which wuestite is included as at least ...
07/27/1999
5641716Glass production method using ilmenite
A neutral, generally green colored, infrared energy and ultraviolet radiation absorbing glass composition comprises conventional soda-lime-silica float glass ingredients, a relatively high concentration of moderately reduced iron, and titanium oxide(s). T...
06/24/1997
5523263Glass production method using ilmenite
A neutral, generally green colored, infrared energy and ultraviolet radiation absorbing glass composition comprises conventional soda-lime-silica float glass ingredients, a relatively high concentration of moderately reduced iron, and titanium oxide(s). T...
06/04/1996
5521128Neutral gray absorbing glass comprising manganese oxide for selenium retention during processing
A neutral gray, heat absorbing soda-lime-silica glass having at 4 mm. control thickness a light transmittance using illuminant A of 10.0% to 55.0%, ultra violet transmittance less than 25.0%, and infra red transmittance is less than about 50.0% produced w...
05/28/1996
5478783Glass compositions
An infrared and ultraviolet absorbing soda-lime-silica glass of a neutral tint containing 0.3% to 0.7% by weight total iron expressed as Fe2 O3, together with amounts of Se, Co3 O4 and a ferrous iron content to ...
12/26/1995
5462570Process for producing an environmentally acceptable abrasive product from hazardous wastes
A method and apparatus of reclaiming hazardous inorganic wastes to produce an environmentally benign abrasive for use in loose grain processes, as a coated or bonded abrasive, or as a polishing grain. A tough and useful abrasive, with a MOH hardness of 7 ...
10/31/1995
5112778Batch composition for making infrared and ultraviolet radiation absorbing green glass
An infrared energy and ultraviolet radiation absorbing green-colored high total iron containing soda-lime-silica glass batch includes typical soda-lime-silica glass batch ingredients, an ultraviolet radiation absorbing quantity of a cerium containing comp...
05/12/1992
5100840Method of preparing a briquette batch
A briquette batch is prepared from a mixture of glass raw materials containing not only sodium hydroxide as a binder, but also calcined plaster....
03/31/1992
5004706Producing molten glass and batch components therefor
A method of producing molten glass wherein silica is heated with a batch component comprising a sodium alkaline earth silicate which includes a major portion of the sodium in the resultant molten glass. There is also disclosed a batch component for use in...
04/02/1991
4931413Glass ceramic precursor compositions containing titanium diboride
Glass ceramic precursor compositions comprise from about 15 to about 75 percent by weight of titanium diboride and from about 10 to about 85 percent by weight of a silica compound, such as colloidal silica. The glass ceramic precursor compositions may als...
06/05/1990
4920080Method of making glass with preliminary reaction of batch materials
Silica is reacted with sodium carbonate to form sodium silicate as a preliminary step in a glass melting process. Preferably, calcium carbonate-containing batch materials are calcined separately and then combined with the sodium silicate as liquefying is ...
04/24/1990
4810675Process for making lightweight body suitable for use as an additive in an article of manufacture
A process for making a body suitable for use as an additive for incorporation in a plastic, which comprises the steps of forming a blend of glass-forming materials, converting the blend of glass-forming materials into a solidified porous form, and heating...
03/07/1989
4608352Neutron-absorbent glasses containing gadolinium and process for their preparation
The present invention relates to neutron-absorbent oxide or oxynitride glasses containing gadolinium and a process for their preparation. The glasses according to the invention, which incorporate silicon, aluminum, oxygen or oxygen and nitrogen, additionally c...
08/26/1986
4588700Coating to prevent the oxidation of electrodes during electric furnace steel making
A coating is provided whih substantially lengthens the life of carbon and graphite electrodes used in electrical arc processes for the manufacture of ferrous metals. The coating forms a silica-phosphorus glass upon the electrodes....
05/13/1986
4558015Chemically resistant refractory fiber
A composition for forming a high temperature, acid and alkali resistant refractory fiber. The compositional formulation, by weight, is 56-76% silica, 12-33% alumina, and 3-22% zirconia. These fibers are chemically resistant in both acidic and alkaline env...
12/10/1985
4555492High temperature refractory fiber
A composition for forming a high temperature, alkali resistant refractory fiber. The compositional formulation, by weight, is 46-52% silica, 32-38% alumina, 13-18% zirconia with a silica to zirconia ratio in the range from 2.6 to 3.8. These fibers have a ...
11/26/1985
4537862Lead-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
4526603Method for manufacturing an opal borosilicate glass
The dusting and segregation of the glass batch during the manufacture of opal borosilicate glass can be reduced by adding the phosphorus values to the glass batch as phosphoric acid, and calcium values as limestone, calcium carbonate or calcium oxide....
07/02/1985
4525462Dark blue dyed furnace sight glass with high infrared absorption
Dark blue dyed furnace sight glass of soda-lime-silica further containing carbon and oxides of iron and cobalt with substantially no infrared transmission and which sight glass affords a view of details in the melting operation. Other ingredients may incl...
06/25/1985
4503158Double 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
4500642Infrared absorbing quartz glass with iron and aluminum
Quartz glass includes iron and aluminum. The total iron content ranges from 0.01 to 5% by weight, and the total aluminum content ranges from 0.01 to 10% by weight. The quartz glass exhibits infrared rays-absorbing ability and visible light-transmitting ab...
02/19/1985
4401638Process for purifying silica sand
A process of purifying silica sand comprises grinding sandstone, washing and desliming the ground sandstone to remove the major part of the clay-type binder, attrition-scrubbing the deslimed sand particles to release further amounts of binder therefrom, w...
08/30/1983
4401766Ceramic seal between spaced members such as a terminal pin and a ferrule
Acid and alkali oxides are smelted for an extended period of time at a first elevated temperature above their melting temperatures. The smelted mixture is then quenched in water and fritted. The fritted mixture is then disposed between a pair of members w...
08/30/1983
4387180Glass compositions
A glass batch, and a fiberizable glass composition, comprising 2 percent B2 O3 is disclosed. The glass fibers have improved dry strength and water durability and have a surface boron concentration, in weight percent, of about 2.5....
06/07/1983
4349366Glass batch pellet production and drying process
In a rotary apparatus and a process for the production of layered glass batch pellets there is provided a drying process and a dryer for final drying of the pellets prior to their being fed to a melting furnace. Relatively cool moist pellets are fed into ...
09/14/1982
4339254Glass manufacture employing a silicon carbide refining agent
A method of rendering substantially seed-free glass is disclosed by incorporating into glass batch materials a carbide compound, such as silicon carbide. The compound may be present in concentrations as low as about 0.001 weight percent and as high as 0.0...
07/13/1982
4313747Process for making glass with agglomerated refining agents
Refining agents comprising intimate mixtures of finely-divided sulfates and reducing agents are added to vitrifiable charges of glassmaking raw materials prior to melting the raw materials so that, when the charge is melted, the refining agent will evolve...
02/02/1982
4277274Process 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
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