With Vehicle Or Suspending Agent (i.e., Slip) Patents (Class 501/20)
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Patent number: 6602946Abstract: A photosensitive insulating paste contains a borosilicate glass powder and a crystalline SiO2 powder, wherein the powders are dispersed in a photosensitive organic vehicle and the paste contains the crystalline SiO2 component in an amount of about 3-40 wt. % after sintering. A thick-film multi-layer circuit substrate (e.g., chip inductor) comprising an insulating substrate on which insulating layers are formed, wherein the insulating layers are formed through exposure, development and sintering, after the application of the photosensitive insulating paste.Type: GrantFiled: July 26, 2001Date of Patent: August 5, 2003Assignee: Murata Manufacturing Co.Inventors: Makoto Tose, Hiromichi Kawakami, Shizuharu Watanabe
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Patent number: 6589894Abstract: In a composition for use in formation of barrier ribs in a plasma display panel, comprising glass powder, the glass powder is powder of PbO free and alkali metal oxide free glass which consists essentially of, by molecular percent, 5-40% BaO, 20-55% ZnO, 15-50% B2O3, 0-25% SiO2. The glass has a softening point of 630° C. or less. Ceramics powder is mixed with the glass powder. The composition can also be provided in a form of paste, alternatively in a form of a green sheet.Type: GrantFiled: September 11, 2000Date of Patent: July 8, 2003Assignee: Nippon Electric Glass Co., Ltd.Inventors: Takayuki Mito, Hiroyuki Oshita, Masahiko Ouji, Kazuo Hadano
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Publication number: 20030050172Abstract: The invention refers to an enamel composition for producing reflecting dielectric layers in plasma display panels, comprising as layer forming constituents 70 to 97% by wt. of a glass frit composition and 3 to 30% by wt. of a particulate whitening material. The whitening material comprises one or more thermally deactivated white pigments, which have been made by a process comprising heating of at least one white pigment in the absence or presence of a glass frit having a softening temperature of less than 600° C. at a temperature of 600 to 1000° C. for 0,1 to 10 hours.Type: ApplicationFiled: December 15, 2000Publication date: March 13, 2003Inventors: Guy Roche, Annette Gorse
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Patent number: 6518209Abstract: A chemical, thermal, and electrical corrosion resistant dry mix for use in fusing glass to metal motor vehicle and building industry articles. A chemical, thermal, and electrical corrosion resistant composition for fusing glass to metal motor vehicle and building industry articles. A method of glass fusing metal motor vehicle and building industry articles using a chemical, thermal, and electrical corrosion resistant dry mix. A method of glass fusing metal motor vehicle and building industry articles with a chemical, thermal, and electrical corrosion resistant composition. A method of fusing single or multiple layers of glass to metal motor vehicle and building industry articles.Type: GrantFiled: July 12, 2001Date of Patent: February 11, 2003Inventor: Gary D. Wilson
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Publication number: 20020176933Abstract: Paste for a transparent insulating film of a plasma display panel, the paste including powder glass contains lead oxide, silicon oxide, boron oxide, barium oxide, and aluminum oxide, solvent, and resin.Type: ApplicationFiled: December 5, 2001Publication date: November 28, 2002Inventors: Tastuo Mifune, Tomohiro Hayashi
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Publication number: 20020155937Abstract: One object of the present invention is to provide a paste that is easily coated, has a comparatively long aging time and is able to maintain the shape of the ribs following plastic deformation; in order to achieve the object, the present invention provides a paste comprising 50-95% by weight of glass powder or glass-ceramic mixed powder, 0.1-15% by weight of a resin, and 3-60% by weight of a plurality of kinds of solvents, wherein each boiling point of the plurality of kinds of solvents differs by 30° C. or more; and, the plurality of kinds of solvents contain one or more low boiling point solvents which are low boiling point solvents having a boiling point from 100° C. to 180° C., and one or more high boiling point solvents which are high boiling point solvents having a boiling point from 190° C. to 450° C.Type: ApplicationFiled: January 4, 2002Publication date: October 24, 2002Inventors: Ryuji Uesugi, Ikiko Hashimoto, Yoshio Kanda, Yoshirou Kuromitsu, Young Cheul Kang, Seung Jae Chung, Joon Mim Kim, Kanzo Yoshikawa
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Patent number: 6444597Abstract: A dental paste-like porcelain is disclosed, including a mixture in a paste-like state of from 7 to 45 parts by weight of a binder comprising a synthetic and/or natural, hydrophilic group-containing polymeric material dissolved in one or two or more organic solvents selected from a dihydric or trihydric alcohol, a hydroxyl group-remaining ether and a hydroxy(meth) acrylate, and/or water and having a viscosity, as measured at a constant temperature of 23° C. and at a conversion constant of 1.61×104 under the conditions that a revolution number is 1 rpm, of from 50,000 to 1,500,000 cps, andaporcelain powder as a remainder, with a total amount being 100 parts by weight. The dental paste-like porcelain according to the invention does not require a condensation procedure. Accordingly, even a beginner can easily carry out the porcelain application of prostheses over a wide range including from a single crown to a bridge, without necessity of the skill.Type: GrantFiled: September 14, 2000Date of Patent: September 3, 2002Inventors: Takahiro Sato, Keisuke Ikushima
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Patent number: 6439943Abstract: The object of the present invention is to provide a high-intensity, reliable plasma display panel even when the cell structure is fine by resolving the problems such as a low visible light transmittance and low voltage endurance of a dielectric glass layer. The object is realized by forming the dielectric glass layer in the manner given below. A glass paste including a glass powder is applied on the front glass substrate or the back glass substrate, according to a screen printing method, a die coating method, a spray coating method, a spin coating method, or a blade coating method, on each of which electrodes have been formed, and the glass powder in the applied glass paste is fired. The average particle diameter of the glass powder is 0.1 to 1.5 &mgr;m and the maximum particle diameter is equal to or smaller than three times the average particle diameter.Type: GrantFiled: May 11, 1999Date of Patent: August 27, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaki Aoki, Yasuhisa Ishikura, Katsuyoshi Yamashita, Shinya Fujiwara, Yasuyuki Akata
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Patent number: 6429161Abstract: The present invention provides a new and improved porcelain enamel coating composition for use in forming a self-cleanable coating upon aluminized steel. The coating composition comprises a glass component having a composition comprising from about 30% to about 55% SiO2, from about 11% to about 20% TiO2, from about 0% to about 10% B2O3, from about 20% to about 40% alkali metal oxides, less than about 5% rare earth metal oxides, from about 0% to about 10% CaO, from about 0% to about 10% BaO, from about 0% to about 10% MnO, from about 2% to about 12% CuO, from about 0% to about 10% Sb2O3, from about 1.5% to about 10% Fe2O3, from about 0% to about 10% SnO2, from about 0% to about 10% P2O5, less than about 2% MoO3, and less than about 5% V2O5.Type: GrantFiled: August 7, 2000Date of Patent: August 6, 2002Assignee: Ferro France S.A.R.L.Inventors: Thierry Souchard, Alain Aronica
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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: 6387833Abstract: A sealing composition having at least one member from &agr;-4PbO.B2O3 crystal powder and Pb3O4 powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO—ZnO—B2O3—SiO2 type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an &agr;-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.Type: GrantFiled: August 2, 2000Date of Patent: May 14, 2002Assignee: Asahi Glass Company, LimitedInventors: Ryuichi Tanabe, Hiroshi Usui, Yutaka Segawa, Yuichi Kuroki, Eiji Ichikura
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Patent number: 6387513Abstract: The present invention relates to a more easily recyclable enamel composition which includes at least one glass frit and includes, as pigment(s), at least one or more manganese compounds, this composition furthermore having a melting temperature below 750° C. The invention also relates to an enamelling process using this composition, as well as to the enamelled products obtained.Type: GrantFiled: August 11, 1999Date of Patent: May 14, 2002Assignee: Saint Gobain VitrageInventors: AndrĂ© Beyrle, Aline DeJean, Daniel Dages, Anne-Valentine Veret-Lemarinier
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Publication number: 20020039957Abstract: A glass ionomer-based fluoride applying material that is able to release 200 &mgr;g/cm2 or more, and preferably 300 &mgr;g/cm2 or more of a fluoride ion until 30 days after immersing a set material thereof in distilled water kept at 37° C., is provided, which contains a fluoroaluminosilicate glass powder, a polycarboxylic acid and water as major components, the fluoroaluminosilicate glass powder accounting for 5 to 70% by weight of the whole, preferably containing, as constitutional elements, 10 to 20% by weight of Si, 10 to 20% by weight of Al, 1 to 20% weight of F, and 5 to 30% by weight of Sr, and additionally, at least one of Na, K, Mg and Ca, and preferably containing Na in an amount of 3 to 15% by weight.Type: ApplicationFiled: July 5, 2001Publication date: April 4, 2002Applicant: GC CorporationInventors: Keizo Kobayashi, Kazuo Hirota
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Patent number: 6365265Abstract: A photosensitive insulating paste including an insulating material containing a borosilicate glass powder. The insulating material is dispersed in a photosensitive organic vehicle, and the borosilicate glass powder contains SiO2, B2O3 and K2O such that the compositional proportions by weight of the three components represented by (SiO2, B2O3, K2O) fall within a region formed by connecting points A (65, 35, 0), B (65, 25, 10), C (85, 5, 10) and D (85, 15, 0) in a ternary diagram thereof. A thick-film multi-layer circuit substrate including the paste is also disclosed.Type: GrantFiled: January 3, 2000Date of Patent: April 2, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Makoto Tose, Hiromichi Kawakami, Shizuharu Watanabe, Michiaki Iha
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Patent number: 6355187Abstract: There is provided a conductive paste comprising a conductive component, a glass frit, and a vehicle, wherein the glass frit comprises a glass and at least one of alumina (Al2O3), silica (SiO2), titania (TiO2) and zirconia (ZrO2). The conductive paste is capable of being baked at a low temperature with sufficient coloring, and is suitable for forming a circuit on a glass substrate, the glass circuit substrate suitable for application in a defogging glass for an automobile window formed therewith.Type: GrantFiled: July 28, 1999Date of Patent: March 12, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Tomoki Sanada, Haruhiko Kano, Fumiya Adachi
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Publication number: 20020022565Abstract: Materials for making a plasma display having a transparent front panel spaced from a back panel which is a metal core having layers of a dielectric material extending over and bonded to the core. The materials of which the back panel is made are chosen to form a back panel having a thermal coefficient of expansion compatible with that of the front panel. The dielectric material is made from a green ceramic tape which is bonded to the core and cofired with the core to form the back panel. The materials for the dielectric can be chosen such that the composite TCE of the cofired assembly matches the TCE of the front panel.Type: ApplicationFiled: May 2, 2001Publication date: February 21, 2002Inventors: Attiganal Narayanaswamy Sreeram, Kalipada Palit, Leszek Hozer, Ellen Schwartz Tormey, Michael James Liberatore
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Patent number: 6348426Abstract: An electrically conductive composition for forming an electrically conductive film through firing. The composition includes metal powder and glass frit as solid components. The glass frit contains a first glass frit which assumes a molten state at least at the maximum temperature during firing and a second glass frit which maintains a glass-ceramic state at the maximum temperature during firing. The first frit has a softening point 100° C. or more lower than the maximum temperature during firing. The content of the first glass frit based on the total amount of glass frit lies within the range of about 25-90 wt. %, and the total amount of glass frit based on the total solid component including metal powder lies within a range of about 3-10 wt. %. Also disclosed are ceramic electronic components and a production process of the components.Type: GrantFiled: September 15, 1999Date of Patent: February 19, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Yukio Sanada, Shinichiro Kuroiwa, Kyoumi Tsukida
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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: 6335298Abstract: Disclosed is an insulating glass paste capable of forming an over glaze layer having a low rate of occurrence of cracks and excellent reliability. The insulating glass paste is used for forming an over glaze layer on an insulating substrate exhibits a fracture toughness strength of about 1.0 MN/m{fraction (3/2)} or more after burning.Type: GrantFiled: December 13, 1999Date of Patent: January 1, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Shizuharu Watanabe, Hiroshi Takagi, Koichi Ishida
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Patent number: 6291362Abstract: A method of fabricating a dielectric layer for a plasma display device that is suitable for forming the dielectric layer through a simple process and improving a characteristic of the dielectric layer. In order to fabricate the dielectric layer, non-crystallized glass powder is prepared. The non-crystallized powder is deposited on a substrate after it is mixed with oxide powder.Type: GrantFiled: April 26, 1999Date of Patent: September 18, 2001Assignee: LG Electronics Inc.Inventor: Yoon Kwan Lee
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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: 6271158Abstract: A sealant for a solid oxide fuel cell comprises a glass material that acts as a matrix, with the glass material being present between about 40 to 90 wt. %. A gap-filler material is also in the sealant and selected from the group consisting of a metal material and a ceramic material, with the gap-filler material being present between about 10 to 60 wt. %. The sealant can seal a gap as large as about 3 mm.Type: GrantFiled: July 13, 1999Date of Patent: August 7, 2001Assignee: AlliedSignal Inc.Inventors: Liang A. Xue, James Piascik, Jean Yamanis, Gregory Lear, James Powers, Daniel Dalfonzo
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Publication number: 20010008110Abstract: A method for making a glass frit paste is provided. First, nitrocellulose is dissolved in a high vapor pressure solvent of the nitrocellulose to make a solution. A portion of the solution is then mixed with alpha-terpineol to form a vehicle. Glass frit is mixed with the vehicle and then ground to form the paste. During the grinding step most of the high vapor pressure solvent evaporates. The resulting paste has a composition comprising about 0.3-12.0 wt. % nitrocellulose, about 0.5-2.0 wt. % of a high vapor pressure solvent of said nitrocellulose, about 14.0-25.0 wt. % alpha-terpineol, and the remainder glass frit.Type: ApplicationFiled: February 26, 2001Publication date: July 19, 2001Applicant: AlliedSignal, Inc.Inventors: Liang A. Xue, James Piascik
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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: 6248680Abstract: A method for making a glass frit paste is provided. First, nitrocellulose is dissolved in a high vapor pressure solvent of the nitrocellulose to make a solution. A portion of the solution is then mixed with alpha-terpineol to form a vehicle. Glass frit is mixed with the vehicle and then ground to form the paste. During the grinding step most of the high vapor pressure solvent evaporates. The resulting paste has a composition comprising about 0.3-12.0 wt. % nitrocellulose, about 0.5-2.0 wt. % of a high vapor pressure solvent of said nitrocellulose, about 14.0-25.0 wt. % alpha-terpineol, and the remainder glass frit.Type: GrantFiled: June 1, 1999Date of Patent: June 19, 2001Assignee: AlliedSignal, Inc.Inventors: Liang A. Xue, James Piascik
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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: 6207285Abstract: A ceramic enamel composition consists of an oxide frit, a bismuth silicate seed material, a pigment, and a vehicle. A preferred bismuth silicate seed material is selected from crystalline Bi12SiO20, Bi4(SiO4)3, and Bi2SiO5, and mixtures thereof. Upon firing a glass substrate coated with the enamel, components of the enamel adhere to the substrate. The glass can be formed with a die to a desired shape with reduced sticking of the coated region to the die. The ceramic enamel is particularly useful in providing a colored border around automotive glass, which enhances appearance and reduces degradation of adhesives by ultraviolet radiation.Type: GrantFiled: May 5, 1999Date of Patent: March 27, 2001Assignee: Cerdec CorporationInventors: George E. Sakoske, Joseph W. Ryan
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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: 6165923Abstract: The present invention provides a coating layer of the coke oven having a high strength, high impact resistance and excellent smoothness to enable long term protection of the fire brick of the coke oven. Carbon adhered to the brick can be removed by spraying a coating agent with a glaze layer mainly composed of 18 to 70% by weight of SiO.sub.2 and 10 to 60% by weight of Na.sub.2 O and/or K.sub.2 O and containing one or a plurality of 2 to 14% by weight of P.sub.2 O.sub.5, 0.5 to 25% by weight of BaO, 0.5 to 25% by weight of SrO and 0.5 to 20% by weight of Fe.sub.2 O.sub.3 onto the surface of a high temperature firebrick, thereby obtaining an excellent coating layer.Type: GrantFiled: September 8, 1998Date of Patent: December 26, 2000Assignees: Kawasaki Steel Corporation, Taiho Industries Co., Ltd.Inventors: Takeshi Ando, Shizuki Kasaoka, Teruo Onozawa, Shigeru Nakai
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Patent number: 6166504Abstract: A robot that stops an arm within a limitation position of a predetermined working area when the arm is going to exceed the predetermined working area. ACPU of controller calculates a position and a speed of an arm at a next sampling time when a present sampling time comes. The CPU calculates an operation a mount which is a distance to be moved till the arm stops when the arm would be decelerated with a predetermined deceleration, and a position of the arm when the arm would operate by the operation amount after the position at the next sampling time. When a stop position as a result of the deceleration exceeds a predetermined limitation position, the CPU stops the arm with the predetermined deceleration. In this way, the CPU obtains the operation speed of the arm each time, and change a position to start to deceleration based on the operation speed, the arm can be stopped around the limitation position of the working area without fail.Type: GrantFiled: November 10, 1999Date of Patent: December 26, 2000Assignee: Denso CorporationInventors: Shinji Iida, Koji Kamiya
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Patent number: 6105394Abstract: The present invention provides lead and cadmium free glass enamel compositions. In one embodiment of the invention, glass frits include from about 0.1 percent by weight to about 15 percent by weight Nb.sub.2 O.sub.5, less than about 3 percent by weight alkali metal oxides, less than about 3 percent by weight ZnO, less than about 1 percent by weight B.sub.2 O.sub.3, and precursors from which Bi.sub.2 SiO.sub.5 can be crystallized upon firing, said precursors including Bi.sub.2 O.sub.3 and SiO.sub.2. Glass frits according to the present invention preferably further include up to about 25 percent by weight of coloring oxides, such as CeO.sub.2, Co.sub.3 O.sub.4, In.sub.2 O.sub.3, SnO, Cr.sub.2 O.sub.3, CuO, Fe.sub.2 O.sub.3, MnO.sub.2, MoO.sub.3, NiO, and V.sub.2 O.sub.5. By incorporating various amounts of coloring oxides into the compositions, the degree of crystallization and the rate at which crystallization occurs upon firing of the compositions can be controlled.Type: GrantFiled: January 12, 1999Date of Patent: August 22, 2000Assignee: Ferro CorporationInventors: Srinivasan Sridharan, Robert P. Blonski, Hasan B. Emlemdi, Gordon J. Roberts, Ivan H. Joyce
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Patent number: 6069099Abstract: A method of controlling the rheology of a sealing glass paste which comprises incorporating a fine inorganic powder in the paste as a mill addition to impart a steep rheology curve to the paste so that the paste resists flow while at rest, but flows readily when shear stress is applied, the amount of inorganic powder incorporated being not over about 10% by weight.Type: GrantFiled: October 8, 1998Date of Patent: May 30, 2000Assignee: Corning IncorporatedInventors: Edward J. Fewkes, Margaret E. Greene, Robert Morena, Frances M. Smith
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Patent number: 6046121Abstract: A glass paste composition contains:(A) glass powders (B) a binder resin; and (C) at least one organic solvent selected from a ketone, an alcohol and an ester which has property that the normal boiling point is 100 to 200.degree. C., and the vapor pressure at 20.degree. C. is 0.5 to 50 mmHg.A plasma display panel is produced by a method which comprisescoating the glass paste composition on a base film to form a film forming material layer;transferring the film forming material layer formed on the base film to a glass substrate; andbaking the transferred film forming material layer to form a dielectric layer on the surface of the glass substrate.Type: GrantFiled: May 7, 1998Date of Patent: April 4, 2000Assignee: JSR CorporationInventors: Hideaki Masuko, Tadahiko Udagawa, Shigeru Abe, Atsushi Kumano, Kenji Okamoto, Hideyuki Kamii
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Patent number: 6037041Abstract: The invention relates to a method of providing an encodable layer on a glass object and on the resultant product. The layer is formed by providing a paste containing glass frit, pigment and a binder, on the hot glass. As a result, the glass frit melts, causing the pigment to adhere to the glass object. The binder, which is used to render the paste spreadable, disappears from the mixture.Type: GrantFiled: June 19, 1997Date of Patent: March 14, 2000Assignee: U.S. Philips CorporationInventors: Raymond J. L. Van Kooyk, Johan Bosman
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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: 6022624Abstract: A ceramic enamel composition contains 40-80% by weight of at least one lead-free metal oxide frit containing precursors of Zn.sub.2 SiO.sub.4, such as ZnO and SiO.sub.2, wherein the amount of Zn.sub.2 SiO.sub.4 precursors is less than about 35% by weight of the at least one lead-free metal oxide frit, 0.05-15% by weight of a zinc silicate seed material, and 19-37% by weight of a pigment. The zinc silicate seed material preferably contains crystalline Zn.sub.2 SiO.sub.4. The enamel preferably also contains a bismuth silicate seed material. The ceramic enamel can be employed as a coating around the periphery of automotive glass and is effective in improving appearance and reducing degradation of underlying adhesives by ultraviolet radiation.Type: GrantFiled: May 3, 1999Date of Patent: February 8, 2000Assignee: Cerdec CorporationInventor: George E. Sakoske
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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: 5968858Abstract: An insulating paste comprises a glass component composed of SiO.sub.2, B.sub.2 O.sub.3 and K.sub.2 O as xSiO.sub.2 -yB.sub.2 O.sub.3 -zK.sub.2 O, where x, y and z (% by weight) fall within the area surrounded by points A (x=65, y=35, z=0), B (x=65, y=20, z=15), C (x=85, y=0, z=15) and D (x=85, y=15, z=0), and an organic vehicle. The insulating layer made of the paste has a low dielectric constant and excellent insulating properties.Type: GrantFiled: October 22, 1997Date of Patent: October 19, 1999Assignee: Murata Manufacturing Co., Ltd.Inventors: Hiromichi Kawakami, Hiroji Tani
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Patent number: 5962353Abstract: A sanitary ceramic glaze with improved drying and leveling properties contains a thickening amount of a hydrophobically modified hydroxyethylcellulose with a M.S. of 1.5 to 4.5 and a weight percent hydrophobic modification between 0.1 and 2.0.Type: GrantFiled: February 12, 1993Date of Patent: October 5, 1999Assignee: Hercules IncorporatedInventors: Dieter Schweizer, Claudia Sorg
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Patent number: 5876841Abstract: The present invention provides a conductive paste and a conductor and a ceramic substrate using the conductive paste which, when used as a conductive material for a ceramic substrate, can prevent cutting of the conductor in a through hole and peeling of the conductor from the through hole side wall during burning, thereby improving the yield and reliability of through hole conduction. The conductive paste contains Cu powder, Ni powder, glass frit and an organic vehicle, the amount of the Ni powder being about 1 to 20% by weight relative to the total amount of the Cu powder and the Ni powder, and the amount of the glass frit being about 1 to 40% by weight relative to the total amount of the Cu powder, the Ni powder and the glass frit.Type: GrantFiled: December 19, 1996Date of Patent: March 2, 1999Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichiro Banba, Tetsuya Ikeda, Hiroji Tani
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Patent number: 5856015Abstract: A glaze composition for refractory materials includes 30 to 80% by weight of at least one lead-free and barium-free borosilicate, borophosphate or phosphate glass frit having a dilatometric softening point of below 600.degree. C.; 2 to 30% by weight of aluminium powder or an aluminium alloy powder; 2 to 30% by weight of silicon powder or silicon alloy powder, up to 10% by weight of an inhibitor; and optionally a refractory filler, a clay or other additives. The glaze composition is of particular use as a glaze for carbon containing refractory materials such as submerged entry nozzles and graphite electrodes.Type: GrantFiled: August 23, 1996Date of Patent: January 5, 1999Assignee: Cookson Matthey Ceramics & Materials LimitedInventor: Fraser James Buchanan
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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: 5840107Abstract: A sealing composition (134) includes about 85-95 wt. % glass frit, about 2-8 wt. % butyl carbitol acetate, about 2-8 wt. % alpha-terpineol, about 0.05-0.8 wt. % ester alcohol, and about 0.05-0.8 wt. % low molecular weight ethyl cellulose binder. A method for fabricating an apparatus (100) includes the steps of applying the sealing composition (134) to a portion (132) of the apparatus (100), removing the butyl carbitol acetate, the alpha-terpineol, and the ester alcohol, removing the binder, and heating the glass frit to a sealing temperature of the glass frit.Type: GrantFiled: March 25, 1998Date of Patent: November 24, 1998Assignee: Motorola, Inc.Inventor: Bernardo B. Salibay
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Patent number: 5814571Abstract: A dielectric paste used for fabrication of a capacitor which permits manufacture of a small-sized ceramic oscillator by being incorporated in the oscillator. The dielectric paste comprises powdered glass, dielectric powder, and an organic vehicle. The dielectric powder is a lead-based perovskite compound. The powdered glass includes a main component given by xSiO.sub.2 --yB.sub.2 O.sub.3 --zPbO (where x, y, and z are expressed in mole percent). The x, y, and z lie within a region defined by connecting points A (x=70, y=0, and z=30), B (x=70, y=15, and z=15), C (x=10, y=75, and z=15), and D (x=10, y=0, and z=90). Preferably, at least one member selected from the group consisting of Al.sub.2 O.sub.3, CaO, TiO.sub.2, ZrO.sub.2, BaO and MgO is used as an additive. Preferably, glass frit accounts for about 35-95% by weight of the mixture of the powdered glass and the dielectric powder, and the dielectric powder accounts for about 5-65% by weight.Type: GrantFiled: April 24, 1996Date of Patent: September 29, 1998Assignee: Murata Manufacturing Co., Ltd.Inventors: Hiromichi Kawakami, Hiroji Tani
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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
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Patent number: 5783507Abstract: A ceramic enamel composition contains 40-80% by weight of at least one lead-free metal oxide frit containing precursors of Zn.sub.2 SiO.sub.4, such as ZnO and SiO.sub.2, wherein the amount of Zn.sub.2 SiO.sub.4 precursors is less than about 35% by weight of the at least one lead-free metal oxide frit, 0.05-15% by weight of a zinc silicate seed material, and 19-37% by weight of a pigment. The zinc silicate seed material preferably contains crystalline Zn.sub.2 SiO.sub.4. The enamel preferably also contains a bismuth silicate seed material. The ceramic enamel can be employed as a coating around the periphery of automotive glass and is effective in improving appearance and reducing degradation of underlying adhesives by ultraviolet radiation.Type: GrantFiled: January 16, 1997Date of Patent: July 21, 1998Assignee: Cerdec CorporationInventor: George E. Sakoske
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Patent number: 5783506Abstract: The present invention relates to a ceramic coating composition contains frit, suspending agent, binder, mica and pearlescent pigment and has a viscosity of about 10 to 50 second as measured by a Zahn cup with orifice diameter of 0.108 inch.Type: GrantFiled: January 31, 1997Date of Patent: July 21, 1998Assignee: Engelhard CorporationInventors: Richard A. Eppler, Jack S. Polonka
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Patent number: 5766741Abstract: An insulating paste comprises a glass component composed of SiO.sub.2, B.sub.2 O.sub.3 and K.sub.2 O as xSiO.sub.2 --yB.sub.2 O.sub.3 --zK.sub.2 O, where x, y and z (% by weight) fall within the area surrounded by points A (x=65, y=35, z=0), B (x=65, y=20, z=15), C (x=85, y=0, z=15) and D (x=85, y=15, z=0), and an organic vehicle. The insulating layer made of the paste has a low dielectric constant and excellent insulating properties.Type: GrantFiled: April 4, 1996Date of Patent: June 16, 1998Assignee: Murata Manufacturing Co., Ltd.Inventors: Hiromichi Kawakami, Hiroji Tani
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Patent number: 5753571Abstract: A lead and cadmium-free encapsulant glass composition consisting essentially of by weight %, 60-80% Bi.sub.2 O.sub.3, 6-14% SiO.sub.2, 5-12% B.sub.2 O.sub.3, 5-10% Al.sub.2 O.sub.3 and 0-4% ZnO.Type: GrantFiled: February 13, 1997Date of Patent: May 19, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Paul C. Donohue
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Patent number: 5747395Abstract: A glass composition which is essentially free of lead and cadmium includes 30 to 70 wt % SiO.sub.2, 1 to 25 wt % B.sub.2 O.sub.3, 0 to 10 wt % Al.sub.2 O.sub.3, 0 to 5 wt % Bi.sub.2 O.sub.3, 0.1 to 30 wt % CoO, 0.1 to 20 wt % ZnO, 1 to 30 wt % total of at least one of Li.sub.2 O, Na.sub.2 O or K.sub.2 O, up to 10 wt % ZrO.sub.2 and other optional ingredients. The glass composition can be used as a blue colored on-glaze enamel which relies upon the presence of Co.sup.2+ in a network-forming position in the glass to produce the blue color, with oxygen donors such as ZnO.sub.2, alkaline earth oxides and alkali oxides increasing the amount of cobalt occupying network-forming positions, and ZrO.sub.2 to provide chemical durability.Type: GrantFiled: May 8, 1996Date of Patent: May 5, 1998Assignee: Cookson Matthey Ceramics & Materials LimitedInventors: Peter John Smith, Harbans Kaur Mangat