Halogen Containing Patents (Class 501/25)
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Patent number: 9302932Abstract: Provided are a glass composition, preparation method thereof, and cooking appliance including the glass composition. The glass composition includes a glass frit containing P2O5, a Group I-based oxide, and a Group III-based oxide. The Group I-based oxide is selected from Na2O, K2O, and Li2O, the Group III-based oxide is selected from Al2O3 and B2O3, and the glass frit contains about 40 wt % to about 75 wt % of P2O5.Type: GrantFiled: May 8, 2013Date of Patent: April 5, 2016Assignee: LG Electronics Inc.Inventors: Youngseok Kim, Yongsoo Lee, Namjin Kim, Youngjun Lee
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Patent number: 9296642Abstract: Provided are an enamel composition, a preparation method thereof, and a cooking appliance including the same. The enamel composition includes a glass frit containing P2O5, SiO2, TiO2, Na2O, and Al2O3. The glass frit contains about 10 wt % to about 25 wt % of SiO2, about 5 wt % to about 20 wt % of TiO2, about 5 wt % to about 15 wt % of Na2O, and about 9 wt % to about 20 wt % of Al2O3, and the glass frit has a glass deformation temperature of about 500° C. or more, and a reflectivity of about 70% or more.Type: GrantFiled: May 8, 2013Date of Patent: March 29, 2016Assignee: LG Electronics Inc.Inventors: Youngjun Lee, Namjin Kim, Yongsoo Lee, Youngseok Kim
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Patent number: 9296643Abstract: Provided are a enamel composition, a preparation method thereof, and a cooking appliance. The enamel composition includes a glass frit comprising P2O5, SiO2, B2O3, Al2O3, R2O (where R is an alkali metal), a chemical property enhancement component, and an adhesion enhancement component. The chemical property enhancement component includes at least one of ZrO2 and TiO2, and the adhesion enhancement component includes at least one of CoO, NiO, MnO2 and Fe2O3.Type: GrantFiled: May 8, 2013Date of Patent: March 29, 2016Assignee: LG Electronics Inc.Inventors: Youngseok Kim, Yongsoo Lee, Namjin Kim, Youngjin Lee
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Patent number: 9084505Abstract: The present invention relates to enameled-heated cooking utensils with a non-stick ceramic coating layer, and a preparation method thereof, wherein enamel layers are formed on both sides of a main body of heating cooking utensils which is made by using an iron and steel material such as cast ion, steel, cold rolled steel plate and the like, and a non-stick ceramic coating layer which emits anions, radiates far infrared rays, is nonadhesive and does not harm the human body, is formed on the outer surface of the enamel layers. The inventive enameled heating cooking utensils has excellent corrosion resistance, abrasion resistance, heat resistance and the like, prevents food from sticking when heating food, and is environmentally-friendly by forming a non-stick ceramic coating layer which does not harm human body, and thus the demand of the enameled-heated cooking utensils according to the present invention is expected to remarkably increase hereafter.Type: GrantFiled: February 5, 2010Date of Patent: July 21, 2015Inventor: Chung Kwon Park
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Publication number: 20140326393Abstract: Certain example embodiments relate to improved seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that includes the above-described composition.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventor: Timothy A. DENNIS
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Patent number: 8778455Abstract: A composition that upon firing, forms a non-stick enamel layer is disclosed. The composition can be applied to a metal substrate to provide a non-stick, durable coating for cooking surfaces. Also disclosed are methods of forming enamel layers and corresponding coated substrates. Various ground coats and related methods are also described. Furthermore, various multilayer coatings and structures are disclosed that include an enamel layer and a ground coat layer.Type: GrantFiled: April 27, 2010Date of Patent: July 15, 2014Assignee: Ferro CorporationInventors: Albert L. Benford, Jr., Andrew Gorecki, Louis J. Gazo, Charles A. Baldwin
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Patent number: 8772189Abstract: This invention relates to glass and enamel compositions. The glass compositions comprise SiO2, Cs2O, Na2O, ZnO, B2O3, and TiO2, and optionally Bi2O3 and F. The resulting compositions can be used to form an enamel on a substrate, for example, to decorate and/or protect the substrate.Type: GrantFiled: May 4, 2011Date of Patent: July 8, 2014Assignee: Ferro CorporationInventors: Sandeep K. Singh, George E. Sakoske, David A. Klimas
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Publication number: 20120282407Abstract: This invention relates to glass and enamel compositions. The glass compositions comprise SiO2, Cs2O, Na2O, ZnO, B2O3, and TiO2, and optionally Bi2O3 and F. The resulting compositions can be used to form an enamel on a substrate, for example, to decorate and/or protect the substrate.Type: ApplicationFiled: May 4, 2011Publication date: November 8, 2012Applicant: FERRO CORPORATIONInventors: Sandeep K. Singh, George E. Sakoske, David A. Klimas
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Patent number: 8298971Abstract: The present invention relates to a ceramic powder and special raw material and use thereof. The raw material of the ceramic powder comprises 20-80 mass parts of SiO2, 10-50 mass parts of AlF3 and 0-30 mass parts of regulator. The raw material for preparing the ceramic powder is mixed and crushed, followed by melted into liquid glass at 1200-1400° C., quenched to obtain the ceramic powder. The low temperature co-fired ceramic powder has the following advantages: low sintering temperature (750-850° C.) and controllable sintering shrinkage rate; the dielectric constant of the ceramic block prepared with the ceramic powder is adjustable between 4.5 and 10 (1 MHz), the dielectric loss is less than 0.002, the mechanical strength is high and the preparation process is simple. The ceramic powder may be used for electric devices such as ceramic substrate, resonator, etc. as well as in other microelectronic packaging.Type: GrantFiled: November 4, 2008Date of Patent: October 30, 2012Assignee: Tsinghua UniversityInventors: Ji Zhou, Rui Wang, Hongjie Zhao
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Patent number: 8252708Abstract: A borosilicate glass composition suitable for manufacturing microreactor glass frits includes 12-22 mol % B2O3=12-22; 68-80 mol % SiO2; 3-8 mol % Al2O3, 1-8 mol % Li2O, and one of 0.5±0.1 mol % ZrO2 and 1.1±0.5 mol % F. After sintering a glass frit having the borosilicate glass composition, the glass frit has a surface crystalline layer of 30 ?m or less or is amorphous throughout.Type: GrantFiled: March 8, 2012Date of Patent: August 28, 2012Assignee: Corning IncorporatedInventors: Robert Michael Morena, Paulo Jorge Marques, Henry Edwin Hagy
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Publication number: 20120213952Abstract: Certain example embodiments relate to improved seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that includes the above-described composition.Type: ApplicationFiled: September 21, 2011Publication date: August 23, 2012Applicant: Guardan Industries Corp.Inventor: Timothy Alan DENNIS
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Publication number: 20120213951Abstract: Certain example embodiments relate to improved seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that includes the above-described composition.Type: ApplicationFiled: February 22, 2011Publication date: August 23, 2012Applicant: Guardian Industries Corp.Inventor: Timothy A. Dennis
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Patent number: 8202812Abstract: This invention relates to lead free, cadmium free, bismuth free low melting high durability glass and enamel compositions. The compositions comprise silica, zinc, titanium, and boron oxide based glass frits. The resulting compositions can be used to decorate and protect automotive, beverage, architectural, pharmaceutical and other glass substrates.Type: GrantFiled: July 1, 2011Date of Patent: June 19, 2012Assignee: Ferro CorporationInventor: George E. Sakoske
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Patent number: 8080490Abstract: The invention relates to an antimicrobial phosphate glass having the following composition in percent by weight on an oxide basis: P2O5>66-80 percent by weight; SO30-40 percent by weight; B203 0-1 percent by weight; Al2O3>6.2-10 percent by weight; SiO2 0-10 percent by weight; Na2O>9-20 percent by weight; CaO 0-25 percent by weight; MgO 0-15 percent by weight; SrO 0-15 percent by weight; BaO 0-15 percent by weight; ZnO>0-25 percent by weight; Ag2O 0-5 percent by weight; CuO 0-10 percent by weight; GeO2 0-10 percent by weight; TeO2 0-15 percent by weight; Cr2O3 0-10 percent by weight; J 0-10 percent by weight; F 0-3 percent by weight.Type: GrantFiled: February 20, 2004Date of Patent: December 20, 2011Assignee: Schott AGInventors: Jörg Hinrich Fechner, José Zimmer, Karine Seneschal
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Patent number: 8042363Abstract: The invention relates to producing continuous organic fibers by stretching from molten minerals. These fibers can be used for producing heat resistant threads, rovings, cut fibers, fabrics, composite materials and products based thereon. The inventive glass has the following chemical composition in mass percentage: 15.9-18.1 Al2O3, 0.75-1.2 TiO2, 7.51-9.53 Fe2O3+FeO, 6.41-8.95 CaO, 2.5-6.4 MgO, 1.6-2.72 K2O, 3.3-4.1 Na2O, 0.23-0.5 P2O5, 0.02-0.15 SO3, 0.12-0.21 MnO, 0.05-0.19 BaO, impurities up to 1.0, the rest being SiO2. The inventive method consists in loading a ground composition in a melting furnace, in melting said composition, in homogenizing a melt, in consequently stabilizing the melt in the melting furnace feeder, in drawing and oiling the fiber and in winding it on a spool. Prior to loading, the composition is held in an alkali solution for 15-20 minutes, and is then washed with flowing water for 20-30 minutes and dried.Type: GrantFiled: December 25, 2006Date of Patent: October 25, 2011Inventors: Viktor F. Kibol, Sunao Nakanoo, Alexandr B. Biland, Roman V. Kibol
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Patent number: 7964294Abstract: An easy to clean and stain resistant coating for a cooking product includes an oxycarbofluoride coating. The oxycarbofluoride coating has a composition comprising at least one metal oxide, carbon and fluorine and can be applied to a substrate using a sol-gel process.Type: GrantFiled: July 8, 2008Date of Patent: June 21, 2011Assignee: General Electric CompanyInventors: Venkat Subramaniam Venkataramani, Salil Mohan Joshi, Nagaveni Karkada, Sundeep Kumar
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Patent number: 7767603Abstract: A network former and a glass modifier are formed and maintained by using basalt rock ore, and the crystallization and binding of basalt fiber are inhibited The heat-resistance property of basalt fiber is greatly improved from the conventional 750° C. to 850 or 900° C., and significant cost reduction is achieved over conventional products. Basalt fiber material having basalt rock as a raw material to which one or more kinds of oxide selected from Al2O3, SiO2, CaO, and MgO is added, and basalt fiber material having two kinds of basalt rock containing different amounts of elements as raw materials are provided.Type: GrantFiled: June 5, 2006Date of Patent: August 3, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Nakagawa Sangyo Co., Ltd.Inventors: Sumio Kamiya, Isao Tanaka, Kazumi Imamura, Hironori Sasaki, Noriaki Nakagawa
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Patent number: 7763557Abstract: A porcelain enamel composition having a metallic appearance is disclosed. The composition comprises about 45% to about 55% SiO2, about 4 to about 20% R2O, about 9 to about 15% B2O3, about 4 to about 12% MnO2, about 1.5 to about 7% F2, about 0% to about 20% MO2, about 0% to about 10% RO, about 0% to about 6% NO2, about 0% to about 2% P2O5, about 0% to about 3% CoO, about 0% to about 3% NiO, about 0% to about 3% Al2O3, about 0% to about 3% Fe2O3, about 0% to about 3% CuO, about 0% to about 4% ZrO2, about 0% to about 2% Nb2O5, and about 0% to about 5% Sb2O3, wherein R2O represents at least one alkali oxide, wherein RO represents at least one alkaline earth oxide and wherein MO2 represents at least one opacifying pigment selected from the group consisting of ZrO2, TiO2, CeO2, SnO2 and La2O3.Type: GrantFiled: May 10, 2006Date of Patent: July 27, 2010Assignee: Ferro CorporationInventors: Charles A. Baldwin, David P. Fedak, Bradley E. Devine
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Publication number: 20100050693Abstract: lead-free crystal ice that can be melt-adhered to a plate glass, has an average particle diameter (ø) of 0.2 mm to 1.0 mm, can be melted at a firing temperature (i.e. an internal temperature of a heating furnace) of 650 to 710° C., contains no heavy metals, and consists of optimal components present in optimal amounts. The lead-free crystal ice has the highest melting point within the range of 650 to 710° C. In addition, the surface of the lead-free crystal ice is not deformed or discolored in the atmosphere after the crystal ice is melt-adhered to the surface of a plate glass.Type: ApplicationFiled: November 24, 2006Publication date: March 4, 2010Inventor: Jae Seok Jeon
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Publication number: 20100009837Abstract: This invention relates to lead free, cadmium free, bismuth free low melting high durability glass and enamel compositions. The compositions comprise silica, zinc, titanium, and boron oxide based glass frits. The resulting compositions can be used to decorate and protect automotive, beverage, architectural, pharmaceutical and other glass substrates.Type: ApplicationFiled: February 10, 2009Publication date: January 14, 2010Applicant: FERRO CORPORATIONInventor: George E. Sakoske
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Patent number: 7611774Abstract: The glass ceramic or glass element that can be subjected to high thermal loads is decorated with a metallic colorant. The metallic colorant consists of a melted silicate and at least one effect pigment, which is included in a specified proportion in a melt of the silicate glass to form the metallic colorant. The at least one effect pigment is in the form of platelets of synthetic aluminum oxide (Al2O3) coated with at least one metal oxide. Preferably the at least one effect pigment is a XIRALLIC® high chroma sparkle pigment supplied commercially by Merck and the metallic colorant has a pigment content of from 1 to 30 wt. %.Type: GrantFiled: May 3, 2005Date of Patent: November 3, 2009Assignee: Schott AGInventors: Monica Cotlear De Witzmann, Dietmar Wennemann, Angelina Milanovska, Ella Ruhl, Eva Lauterbach, Ioannis Kosmas
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Patent number: 7323160Abstract: A method of treating sensitive teeth includes (1) attaching a fluoride releasing glass composition to a person's tooth, and (2) allowing fluoride to be slowly released over time in order to reduce chronic and/or acute tooth sensitivity. A preferred glass composition comprises the general empirical formula given below, expressed in approximate weight percent of the element: P: 16-24, F: 5-30, O: 20-40 and at least one of Na, K, Li, or Al in an amount up to a total of about 40 weight percent and optionally, up to about 5 weight percent of boron and/or silicon.Type: GrantFiled: December 2, 2003Date of Patent: January 29, 2008Assignee: Teldent Ltd.Inventors: Brian Algar, Jack Toumba, Martin Curzon
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Patent number: 7175833Abstract: A glass composition having the general empirical formula given below, expressed in weight percent of the element: P: 16–24, F: 5–30, O: 20–40 and at least one of Na, K, Li or Al in an amount up to a total of 40 wt. % and optionally, up to 5 wt. % of boron and/or silicon. The composition may be used for the treatment and/or prevention of dental caries by providing a slow fluoride releasing device that may be attached to a tooth to release fluoride into the saliva or an individual.Type: GrantFiled: August 14, 2000Date of Patent: February 13, 2007Assignee: Teldent LtdInventor: Brian Algar
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Patent number: 6837075Abstract: A glass fixative composition for bonding glass materials to non-glass materials is provided. The fixative composition is selected for its thermal expansion coefficient, its viscosity, its adhesion to glass, melting point, and bond strength. The glass fixative is in particular useful for bonding optical fibers to metallic materials such as Kovar. The low melting point of the glass fixative enables localized heating methods to be used, in particular, as Kovar is a ferromagnetic material, induction heating can be used to form a bond. The bond formed provides a compressive joint which enables the fiber to be hermetically fixed in position.Type: GrantFiled: October 27, 2000Date of Patent: January 4, 2005Assignee: Bookham Technology, plc.Inventors: Kenneth Snowdon, Timothy J Durrant, Richard Wilmshurst, Christopher G Tanner
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Patent number: 6777358Abstract: A glass composition for a seal consists essentially of 70-75 wt % of PbO, 3-7 wt % of PbF2, 5-8 wt % of Bi2O3, 5-7 wt % of B203, 2-5 wt % of ZnO, 1-3 wt % of Fe2O3, 0-2 wt % of CuO, 0-2% of TeO2, and a trace <0.2% of MnO2, the composition having a flow temperature of <350° C. Such seals can be flowed at low temperatures, using different and less environmentally damaging constituents to those used before. Damage to temperature sensitive materials near the seals, can be reduced. Low flow temperatures can be achieved without excessive degradation of properties such as low viscosity, low expansion coefficient, good adhesion to glass and metals, low permeability of air, good long term hydrolytic stability. A filler such as a ceramic powder, is added to match the temperature expansion coefficient to the materials being sealed. It can be used to fix silica fiber into electro-optic devices to achieve hermetic joints with high mechanical stability.Type: GrantFiled: July 25, 2002Date of Patent: August 17, 2004Assignee: Nortel Networks LimitedInventors: Kenneth Snowdon, Christopher Tanner, Timothy Durrant, Christopher Woodend
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Publication number: 20040018932Abstract: A composition for producing a porcelain enamel having a metallic appearance includes a first mixture which forms a polyoxide surface crystal having a metallic appearance when the composition is heated to a temperature ranging from 700 to 1,000° C. and which is composed of from about 0.7 to about 2 wt. % of NiO; from about 2.5 to about 8 wt. % of MnO2; and from about 5 to about 11 wt. % of TiO2; and remainder a second mixture which is a porcelain enamel forming mixture. Advantageously, the composition additionally includes at least one of from about 0.2 to about 0.8 wt. % of CuO, from about 0.05 to about 0.3 wt. % of CoO, and/or from about 0.2 to about 0.6 wt. % of Fe2O3.Type: ApplicationFiled: June 30, 2003Publication date: January 29, 2004Inventors: Boris Yuriditsky, Vincent Duchamp
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Patent number: 6660073Abstract: A porcelain composition for dental restorations comprising a leucite crystallite phase and a glass matrix phase, wherein the leucite crystallites possess diameters not exceeding about 10 micron. Preferably, the porcelain composition has a maturing temperature from about 750° to about 1050° C. and a coefficient of thermal expansion from about 12×10−6/° C. to about 17.5×10−6/° C., and comprises: Component Amount (wt. %) SiO2 57-66 Al2O3 7-15 K2O 7-15 Na2O 7-12 Li2O 0.5-3.Type: GrantFiled: August 8, 2000Date of Patent: December 9, 2003Assignee: Jeneric/Pentron IncorporatedInventors: Carlino Panzera, Lisa M. Kaiser
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Patent number: 6624104Abstract: Low temperature melting lead-free glass and enamel compositions are provided which have low boron content and possess high durability properties. Enamel pastes containing frits of the glass compositions are particularly useful in forming colored borders in automotive glass.Type: GrantFiled: July 30, 2001Date of Patent: September 23, 2003Assignee: Ferro Glass & Color CorporationInventors: George E. Sakoske, Gerhard Tünker
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Patent number: 6428614Abstract: Opaque porcelains for use with metal cores in the manufacture of PFM restorations. The porcelains exhibit a coefficient of thermal expansion (CTE) substantially equal to or slightly above the CTE of the metal to which it is applied. The porcelains exhibit a CTE equal to or up to about 1.5×10−6/° C. higher than the dental alloys to which they are applied as the opaque. The porcelains are fabricated from a mixture of two frit compositions. A high expansion, leucite containing frit is combined with a low melting glass frit to provide a porcelain having an expansion in the range of 16.9 to about 18×10−6/° C. in the temperature range of 25°-500° C.Type: GrantFiled: June 29, 2000Date of Patent: August 6, 2002Assignee: Jeneric/Pentron, Inc.Inventors: Dmitri Brodkin, Carlino Panzera, Paul Panzera
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Patent number: 6403506Abstract: The invention relates to a glass powder, where at least one oxidizing agent or one reducing agent is added to the glass powder. The glass powder is preferably used as dental glass powder.Type: GrantFiled: July 31, 2000Date of Patent: June 11, 2002Assignee: Schott GlasInventors: Susanne Kessler, Hartmut Paschke, Hans-Werner Beudt, Susanne Kiermayer
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Patent number: 6387832Abstract: Transition metal NZP type compounds are synthesized. Examples of these compounds include MnZr4(PO4)6, FeZr4(PO4)6, CoZr4(PO4)6, NiZr4(PO4)6, and CuZr4(PO4)6. These compounds are synthesized by the Xerogel process. These transition metal NZP type compounds can be used as colorants in applications such as ceramic glazes where high thermal stability of the colorant is important.Type: GrantFiled: July 31, 2000Date of Patent: May 14, 2002Assignee: The Penn State Research FoundationInventors: Sridhar Komarneni, William W. Gould
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Patent number: 6346493Abstract: The present invention provides a new and improved lead-free and cadmium-free glass enamel composition that displays good flow at traditional glass enamel firing temperatures and upon firing produces an enamel finish that displays no cracking, good chemical resistance, good weatherability, and improved color values. The glass enamel composition of the present invention includes a glass component, an oxidizer, a pigment system, and optional vehicles and fillers. The presence of the oxidizer in the composition, which can be included as part of the glass component, as a separately added material, or both, improves the color values of the fired enamel as compared to enamels formed using similar glass enamel compositions having no oxidizer present.Type: GrantFiled: October 27, 1999Date of Patent: February 12, 2002Assignee: Ferro CorporationInventors: Galina Kniajer, Jeffrey David Cosby, Ivan H. Joyce, Srinivasan Sridharan, John J. Maloney
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Patent number: 6306783Abstract: A tin borophosphate glass for use in sealing materials includes, by mole, 30 to 80% of SnO, 5 to 60% of B2O3, and 5 to 24% of P2O5 as main components. The glass is free of lead but is of equal quality to those of conventional lead-containing sealing glasses. The glass can provide a satisfactory sealing material.Type: GrantFiled: February 2, 2000Date of Patent: October 23, 2001Assignee: Nippon Electric Glass Co., Ltd.Inventor: Toshio Yamanaka
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Patent number: 6306784Abstract: Alkali silicate glasses are described which, in view of their good chemical stability and their optical properties and processing properties, are particularly suitable as a coating or veneering material for ceramic dental frameworks and hence for the production of all-ceramic dental restorations such as crowns or bridges.Type: GrantFiled: June 9, 2000Date of Patent: October 23, 2001Assignee: Ivoclar AGInventors: Helga Drescher, Martin Frank, Volker Rheinberger, Wolfram Höland
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Patent number: 6287996Abstract: A ceramic color composition which comprises from 5 to 40 wt % of a heat-resistant color pigment powder, from 50 to 94.5 wt % of a glass powder, from 0 to 25 wt % of a refractory filler, and from 0.1 to 40 wt % of at least one whisker-like refractory filler selected from the group consisting of aluminum borate whiskers, &agr;-alumina whiskers, potassium titanate whiskers, zinc oxide whiskers, Na2Ca2P2O18 whiskers, magnesium oxide whiskers, magnesium borate whiskers, basic magnesium sulfate (MgSO4.5MgO.8H2O) whiskers and titanium diboride whiskers.Type: GrantFiled: September 10, 1999Date of Patent: September 11, 2001Assignee: Asahi Glass Company Ltd.Inventors: Jiro Chiba, Takaji Shimosaka, Kenji Mukai, Shuji Taguchi, Mineyuki Ishida, Hitoshi Onoda, Hiroshi Usui, Tsuneo Manabe
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Patent number: 6255239Abstract: Lead-free alkali metal-free bismuth-borosilicate glass compositions are disclosed. These compositions are useful in preparing glass frits which are employed in glass enamel compositions which, in turn, are used to prepare glass enamel pastes. The glass enamel pastes can be coated on non-porous substrates and fused to form decorative and functional coatings on the substrates.Type: GrantFiled: December 4, 1998Date of Patent: July 3, 2001Assignee: Cerdec CorporationInventor: George E. Sakoske
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Patent number: 6206958Abstract: Porcelain compositions of the present invention comprises particulate of one or more glass or glass-ceramic powder components. Additionally, one or more opacifing agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, the particulate has a d10 of from about 1.1 and about 1.8 microns; a d50 of from about 3 to about 6 microns; a d90 of from about 8 to about 16 microns; and about 1.0 to about 4.0% by volume of the particulate has a particle size greater than or equal to about 20 microns. The mean particle size is preferably in the range of about 3.0 microns to about 7.5 microns.Type: GrantFiled: July 15, 1999Date of Patent: March 27, 2001Assignee: Jeneric/Pentron, IncorporatedInventors: Paul Panzera, Jana N. Pruden, Dmitri Brodkin, Lisa M. Kaiser, Richard A. Brightly, Carlino Panzera
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Patent number: 6171987Abstract: A glass composition comprising, in mole percent of the total composition: glass-forming compounds in a total amount of 75 to 85%, wherein said glass forming compounds comprise 40 to 65% SiO2, 10 to 20% Bi2O3 and 0.1 to 3% Al2O3, and glass modifiers in a total amount of 15 to 25%, wherein said glass modifiers comprise 1 to 23 % ZnO, 0.1 to 5% CuO, 0.1 to 5 CaO and 0.1 to 2% MgO, thick film formulations containing said composition and uses thereof.Type: GrantFiled: August 28, 1998Date of Patent: January 9, 2001Assignee: Ben-Gurion University of the NegevInventor: Jacob Hormadaly
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Patent number: 6121175Abstract: Alkali silicate glasses are described which, in view of their good chemical stability and their optical properties and processing properties, are particularly suitable as a coating or veneering material for ceramic dental frameworks and hence for the production of all-ceramic dental restorations such as crowns or bridges.Type: GrantFiled: June 12, 1998Date of Patent: September 19, 2000Assignee: Ivoclar AGInventors: Helga Drescher, Frank Martin, Volker Rheinberger, Wolfram Holand
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Patent number: 6083858Abstract: The present invention relates to a sealing glass composition, which is able to seal a panel and funnel of a color TV at low temperature for a short time by adding Garnet(Fe.sub.3 Al.sub.2 Si.sub.3 O.sub.12) as a nucleating agent and filler component to control the thermal expansion coefficient.Type: GrantFiled: March 8, 1999Date of Patent: July 4, 2000Assignee: Samsung Corning Co., Ltd.Inventors: Tae Ho Park, Sung Hoon Moon, Young Gil Nam
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Patent number: 6043171Abstract: The lead- and cadmium-free glass composition for glazing, enameling and decorating glass or glass-ceramic articles contains high quartz and/or keatite solid solution crystals as principal crystalline phases after crystallization and a low thermal expansion coefficient of less than 2.times.10.sup.-6 /K at temperatures between 20 and 700.degree. C. This glass composition contains Li.sub.2 O, 0 to 5% by weight; Na.sub.2 O, 0 to 5% by weight; K.sub.2 O, less than 2% by weight; MgO, 0 to 3% by weight; CaO, 0 to 4% by weight; SrO, 0 to 4% by weight; BaO, 0 to 4% by weight; ZnO, 0 to 4% by weight; B.sub.2 O.sub.3, 15 to 27% by weight; Al.sub.2 O.sub.3, 10 to 20% by weight; SiO.sub.2, 43 to 58% by weight; TiO.sub.2, 0 to 3% by weight and ZrO.sub.2, 0 to 4% by weight, Sb.sub.2 O.sub.3, 0 to 2% by weight; F, 0 to 3% by weight in exchange for oxygen and up to 30% by weight of at least one inorganic pigment resistant to a burning-in temperature on the glass or the glass-ceramics. The sum total amount of Li.sub.2 O, Na.Type: GrantFiled: May 19, 1998Date of Patent: March 28, 2000Assignee: Schott GlasInventors: Friedrich Siebers, Ottmar Becker, Waldemar Weinberg, Petra Auchter-Krummel
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Patent number: 6022819Abstract: Porcelain compositions of the present invention comprise one or more glass or glass-ceramic powder components. Additionally, one or more opacifying agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, 10% of the particulate in the porcelain has a particle size of less than between about 1.1 microns and about 1.5 microns, 50% of the particulate in the porcelain has a particle size of less than between about 3 and about 6 microns, 90% of the particulate in the porcelain has a particle size of less than between about 8 and about 13.5 microns, and the maximum particle size of the particulate is greater than about 20 microns and less than about 60 microns. The mean particle size is preferably in the range of about 3.0 microns to about 6.5 microns.Type: GrantFiled: July 17, 1998Date of Patent: February 8, 2000Assignee: Jeneric/Pentron IncorporatedInventors: Paul Panzera, Jana Pruden, Dmitri Brodkin, Lisa M. Kaiser, Richard A. Brightly, Carlino Panzera
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Patent number: 6010973Abstract: A dielectric forming material for a plasma display panel enables to form a dielectric layer having a high dielectric strength and good transparency. The dielectric forming material is provided with a green sheet in form that comprises, as a component, glass powder having a 50% particle diameter D.sub.50 which is not more than 2.8 .mu.m. Preferably, the glass powder preferably may have the maximum particle diameter D.sub.MAX which is not more than 18 .mu.m. Desirably, the green sheet essentially may consist by weight of 60-80% the glass powder, 0-10% ceramic powder, 5-30% thermoplastic resin, and 0-10% plasticizer.Type: GrantFiled: July 28, 1998Date of Patent: January 4, 2000Assignee: Nippon Electric Glass, Co., Ltd.Inventors: Hiromitsu Watanabe, Hiroyuki Oshita, Masahiko Ohji, Kazuo Hadano
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Patent number: 6004894Abstract: The present invention provides a porcelain enamel coating composition for use in forming a coating composition upon a metal substrate having an infrared reflectivity of at least 50% at 2.5 .mu.-microns measured with a Perkin Elmer Lambda 19 UV/VIS/NIR spectrometer with a labsphere RSA-PE 19 reflectance spectroscopy accessory. The coating composition comprises a glass component and a separate and distinct addition of cerium oxide. Preferably, the coating composition comprises from about 0.20% to about 3.0% by weight of the cerium oxide.Type: GrantFiled: October 28, 1998Date of Patent: December 21, 1999Assignee: Ferro CorporationInventors: William D. Faust, Holger F. Evele
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Patent number: 5944884Abstract: A porcelain composition for dental restorations comprising a leucite crystallite phase and a glass matrix phase, wherein the leucite crystallites possess diameters not exceeding about 10 micron. Preferably, the porcelain composition has a maturing temperature from about 750.degree. to about 1050.degree. C. and a coefficient of thermal expansion from about 12.times.10.sup.-6 /.degree. C. to about 17.5.times.10.sup.-6 /.degree. C., and comprises:______________________________________ Component Amount (wt. %) ______________________________________ SiO.sub.2 57-66 Al.sub.2 O.sub.3 7-15 K.sub.2 O 7-15 Na.sub.2 O 7-12 Li.sub.2 O 0.5-3.Type: GrantFiled: May 28, 1998Date of Patent: August 31, 1999Assignee: Jeneric/Pentron IncorporatedInventors: Carlino Panzera, Lisa M. Kaiser
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Patent number: 5891233Abstract: A pharmaceutical preparation, including a glass phase which is bioactive silica containing glass in the form of a paste, suspension or solution mixed in a physiologically suitable liquid or bound to a physiologically suitable vehicle, and which preparation reduces the pulpal irritation or a tooth and/or strengthens the structure of a tooth. Bioactive silica containing glass may be a material which contains only Si-oxide or Si-hydroxide and which allows the formation and movement of Si--OH-groups. Preferably, the preparation also contains calcium and phosphate sources.Type: GrantFiled: April 2, 1997Date of Patent: April 6, 1999Assignee: Bioxid OyInventors: Jukka Salonen, Ulla Tuominen, Antti Yli-Urpo
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Patent number: 5849649Abstract: A glass flux composition consisting essentially in mol percent of 3.0-13.0 lithium oxide, 0.5-3.5 potassium oxide, 2.5-7.0 sodium oxide, 0.5-2.5 zinc oxide, 2.0-8.0 aluminium oxide, 15-30 boron oxide, 44-68 silica, 1.0-7.0 zirconium oxide, 0-4.0 calcium oxide, 0-3.0 lanthanum oxide, 0-1.0 other rare earth metal oxide, 0-1.0 yttrium oxide, 0-4.0 magnesium oxide, 0-4.0 strontium oxide, 0-4.0 titanium oxide, 0-10 phosphorus pentoxide, 0-1.5 lead oxide and 0-13.0 fluoride is useful for preparing an enamel or cover flux composition, especially for application to ceramic ware.Type: GrantFiled: April 14, 1997Date of Patent: December 15, 1998Assignee: Johnson Matthey Public Limited CompanyInventor: Sucharitra D. Poole
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Patent number: 5843853Abstract: The invention pertains to a new lead-free glass composition with improved properties, a glass frit of this composition and its use for the production of glass-enamel, particularly for architectural glass. The glass composition contains in mole %:______________________________________ Na.sub.2 O 10-15 K.sub.2 O 0.1-2 SiO.sub.2 40-50 B.sub.2 O.sub.3 8-12 TiO.sub.2 4-7 Al.sub.2 O.sub.3 0.1-3 ZnO 13-17 F 1-5 ______________________________________and less than 0.5 weight % each of the oxides of the series PbO, CdO, P.sub.2 O.sub.5, and alkaline earth metal oxides. Use of a dye preparation containing the glass frit at 600.degree. to 650.degree. C. results in bakeable glazed, crack-free, acid and base resistant enamel layers.Type: GrantFiled: August 4, 1997Date of Patent: December 1, 1998Assignee: Cerdec Aktiengesellschaft Keramische FarbenInventors: Oliver Heitmann, Gerhard Tunker
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Patent number: 5817586Abstract: A colored ceramic composition comprising, as inorganic components, from 5 to 40 wt % of a colored heat resistant pigment powder, from 60 to 95 wt % of a powder of zinc-containing glass and from 0 to 10 wt % of a refractory filler powder, wherein said glass consists essentially of the following components:______________________________________ SiO.sub.2 30 to 60 wt % ZnO 8 to 60 wt % B.sub.2 O.sub.3 0 to 5 wt % Li.sub.2 O 0 to 20 wt % Na.sub.2 O 0 to 20 wt % K.sub.2 O 0 to 20 wt % Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0.1 to 20 wt % MgO + CaO + SrO + BaO 0 to 20 wt % Bi.sub.2 O.sub.3 0 to 40 wt % TiO.sub.2 0 to 10 wt % F 0 to 5 wt %.Type: GrantFiled: April 11, 1997Date of Patent: October 6, 1998Assignee: Asahi Glass Company Ltd.Inventors: Kazuo Harada, Hiroshi Usui, Tsuneo Manabe
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Patent number: 5792716Abstract: The present invention provides a new and improved thick film paste for use as an acid resistant overglaze. In one preferred embodiment such paste includes a glass composition comprising in weight percent from about 30% to about 60% PbO, from about 5% to about 20% ZnO, from about 2% to about 20% B.sub.2 O.sub.3, from about 4% to about 12% Al.sub.2 O.sub.3, from about 5% to about 18% SiO.sub.2, up to about 8% ZrO.sub.2, up to about 8% TiO.sub.2 and from about 9% to about 21% Nb.sub.2 O.sub.5.Type: GrantFiled: February 19, 1997Date of Patent: August 11, 1998Assignee: Ferro CorporationInventors: Subramanian Vasudevan, Srinivasan Sridharan, Gordon J. Roberts