And Aluminum Or Beryllium Patents (Class 501/48)
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Publication number: 20100292066Abstract: A glass material for mold pressing, comprised of a core portion comprised of a multicomponent optical glass containing at least one readily reducible component selected from among W, Ti, Bi, and Nb, and a covering portion covering the surface of said core portion, comprised of a multicomponent glass containing none or a lower quantity of said readily reducible component than is contained in said core portion. A glass material for mold pressing comprising a core portion comprised of a fluorine-containing multicomponent optical glass and a covering portion covering the surface of said core portion, comprised of a multicomponent glass containing none or a lower quantity of fluorine than is contained in said core portion. A method for manufacturing an optical glass element comprising heat softening a glass material that has been preformed into a prescribed shape, and conducting press molding with a pressing mold, employing the above glass material of the invention.Type: ApplicationFiled: March 28, 2007Publication date: November 18, 2010Inventors: Xuelu Zou, Yasuhiro Fujiwara, Hiroshi Kohno, Kohichiro Shiraishi
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Patent number: 7767605Abstract: Provided is an optical glass having high refractivity and high dispersibility, having good moldability in precision pressing, and having high transmittance and good internal quality, of which the transmittance reduction with time is prevented. The optical glass has a Pt content of at most 1.5 ppm, and is characterized in that, when a sample of the glass polished on both surfaces and having a thickness of 10 mm is irradiated with UV and/or visible light at a light-receiving energy of at most 0.4 mW·cm?2 for at least 200 hours, then the difference in the internal transmittance to light having a wavelength of 420 nm, before and after the irradiation (before irradiation—after irradiation) of the sample, as calculated in terms of the sample having a thickness of 10 mm, is at most 0.1.Type: GrantFiled: July 14, 2006Date of Patent: August 3, 2010Assignee: Ohara, Inc.Inventors: Michiko Ogino, Masahiro Onozawa
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Patent number: 7754629Abstract: Disclosed are glass materials generally belonging to the P2O5—ZnO—TeO2 system and process for making the same. The glass may comprise Bi2O3 as well. The high refractive index and low Tg materials are particularly suitable for refractive lens elements for use in portable optical devices. The process involves the use of P2O5 source materials with reduced amounts of reducing agents or a step of removing the reducing agents from such source materials by an oxidizing step such as calcination.Type: GrantFiled: February 7, 2007Date of Patent: July 13, 2010Assignee: Corning IncorporatedInventors: Bruce Gardiner Aitken, James Edward Dickinson, Jr., Sinue Gomez
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Patent number: 7741236Abstract: A zinc and bismuth containing, water-soluble glass composition comprising from 10 to 75 mole % P2O5, 5-50 mole % alkali metal oxide, up to 40 mole % ZnO and up to 40 mole % Bi2O3.Type: GrantFiled: May 29, 2009Date of Patent: June 22, 2010Assignee: Reckitt Benckiser N.V.Inventors: Karlheinz Ulrich Gerhard Hahn, Karin Werner
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Patent number: 7704903Abstract: The invention provides an antimicrobial phosphate glass composition including, in weight percent based on oxide: greater than 45 to 90 of P2O5, 0 to 60 of B2O3, 0 to 40 of SiO2, 0 to 20 weight percent of Al2O3, 0 to 30 of SO3, 0 to 0.1 of Li2O, 0 to 0.1 of Na2O, 0 to 0.1 of K2O, 0 to 40 of CaO, 0 to 40 of MgO, 0 to 15 of SrO, 0 to 40 of BaO, 0 to 40 of ZnO, 0 to 5 of Ag2O, 0 to 15 of CuO, 0 to 10 of Cr2O3, 0 to 10 of I—, 0 to 10 of TeO2, 0 to 10 of GeO2, 0 to 10 of TiO2, 0 to 10 of ZrO2, 0 to 10 of La2O3, 0 to 5 of Nb2O3, 0 to 5 of CeO2, 0 to 5 of Fe2O3, 0 to 5 of WO3, 0 to 5 of Bi2O3, and 0 to 5 of MoO3.Type: GrantFiled: March 8, 2005Date of Patent: April 27, 2010Assignee: Schott AGInventors: Karine Seneschal, José Zimmer, Jörg Hinrich Fechner, Bianca Schreder
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Publication number: 20100065882Abstract: A glass-covered light-emitting element and a glass-covered light-emitting device are provided, which are covered with a glass having a low glass transition point and a thermal expansion coefficient close to that of the light-emitting element. The glass-covered light-emitting element includes a semiconductor light-emitting element having a principal surface, and a P2O5—ZnO—SnO type glass covering the principal surface of the semiconductor light-emitting element, and the glass consists essentially of, as represented by mol % based on the following oxides, from 20 to 45% of P2O5, from 20 to 50% of ZnO and from 20 to 40% of SnO, and the glass has a glass transition point of at least 290° C. and at most 450° C., and a thermal expansion coefficient of at most 105×10?7/° C.Type: ApplicationFiled: November 19, 2009Publication date: March 18, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Syuji Matsumoto, Yasuko Osaki, Nobuhiro Nakamura
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Patent number: 7670974Abstract: A low dispersion optical glass comprising, given as molar percentages, 28 to 50 percent of P2O5; more than 20 percent but not more than 50 percent of BaO; 1 to 20 percent MgO; a sum of Li2O, Na2O, and K2O exceeding 3 percent (with 0 to 25 percent of Li2O, greater than or equal to 0 percent and less than 10 percent of Na2O, and 0 to 12 percent of K2O); more than 0 percent but not more than 15 percent of ZnO; 0 to 25 percent of B2O3; 0 to 5 percent of A12O3; 0 to 8 percent of Gd2O3; 0 to 20 percent of CaO; 0 to 15 percent of SrO; and 0 to 1 percent of Sb2O3; with a sum of oxide contents of P, Ba, Mg, Li, Na, K, Zn, B, Al, Gd, Ca, Sr, and Sb being greater than or equal to 98 percent. The optical glass comprises no La2O3. The press molding preform is comprised of the optical glass.Type: GrantFiled: April 16, 2004Date of Patent: March 2, 2010Assignee: Hoya CorporationInventors: Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 7651966Abstract: A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.Type: GrantFiled: March 30, 2007Date of Patent: January 26, 2010Assignees: Mo-Sci Corporation, The Curators of the University of MissouriInventors: Richard K. Brow, Signo T. Reis, Mariano Velez, Delbert E. Day
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Patent number: 7645314Abstract: Di-ammonium phosphate, murate of potash and gypsum are the conventional phosphorous, potassium and sulfur fertilizers respectively. Application of gypsum to soil can cause an increase calcium load on soil and polluted surface and underground water. The most successful technique is application of phosphorous-potassium-sulfur glass which can be added directly to the soil. Main feature of the present invention is formulation and making of a composition of high phosphorous, potassium and sulfur containing glass free from alkali like Na2O, Li2O and ZnO, which are toxic to the plants. Such glasses are capable of slow release of phosphorous, potassium and sulfur required in the area of agriculture, fungicide, pesticide and weedicides etc. The present invention also emphasize optimization of nutrient content, reduction of calcium load on the soil, minimization of surface and under-ground water pollution and maintenance of acidic environment near the plant roots in the soil.Type: GrantFiled: December 6, 2004Date of Patent: January 12, 2010Assignee: Council of Scientific & Industrial ResearchInventors: Nisha Biswas, Gour Krishna Das Mahapatra, Koushik Ghosh
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Patent number: 7637124Abstract: New and improved compositions of doped and co-doped bismuth fluorophosphate glasses for lasers is disclosed that have a high refractive index (nD) of approximately 1.6 and higher, high transmission in the near infrared part of the spectrum, and a wide glass forming domain. The disclosed glass systems Al(PO3)3—Ba(PO3)2—Bi(PO3)3—BaF2+RFx+dopands use dopants from the group of oxides and or fluorides of rare earth elements Nd, Er, Yb, Tm, Tb, Ho, Sm, Eu and Pr as well as MnO and mixtures thereof over 100 percent (wt %) of the glass-base composition. These glasses have high chemical durability, radiation resistance, efficiency of laser use in the infrared and blue spectrum, and improved duration of luminescence.Type: GrantFiled: June 21, 2009Date of Patent: December 29, 2009Assignee: AFO Research, Inc.Inventors: Alfred A. Margaryan, Ashot A. Margaryan
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Publication number: 20090314033Abstract: A glass material for mold pressing, comprising a core portion comprised of an optical glass with a degree of abrasion FA of 200 or higher and a covering portion comprised of a second glass covering at least a portion of the surface of said core portion. A method for manufacturing an optical glass element, wherein a glass material that has been preformed to a prescribed shape is heat softened and press molded with a pressing mold and the outer perimeter portion of the molded product obtained is removed by mechanical processing. The above-mentioned glass material for mold pressing is used as the glass material. To provide a means whereby an optical element does not bear scratches on optically functional surfaces through contact during handling after the press molding of press molded glass products despite being comprised of a glass material with a high degree of abrasion, and a means whereby even when scratched, the function of the optical element finally obtained is unaffected.Type: ApplicationFiled: March 28, 2007Publication date: December 24, 2009Inventors: Xuelu Zou, Yasuhiro Fujiwara
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Publication number: 20090317772Abstract: The present application provides dental compositions, and methods of making and using dental compositions that include a calcium and phosphorus releasing glass. Such dental compositions can be useful for delivering ions to the oral environment.Type: ApplicationFiled: November 7, 2005Publication date: December 24, 2009Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Richard P. Rusin, Kevin M. Cummings, Sumita B. Mitra, Paul A. Burgio, Tsi-Zong Tzou, David S. Arney
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Patent number: 7618909Abstract: A precision press-molding preform for producing an optical element for use in an imaging device using a CCD type or MOS type solid image-sensing device, which is formed of a glass composition containing, by mol %, 25 to 45% of P2O5, 0.5 to 10% of CuO, 0 to 10% of B2O3, 0 to 10% of Al2O3, 2 to 30% of Li2O, 0 to 25% of Na2O, 0 to 15% of K2O, the total content of Li2O, Na2O and K2O being 3 to 40%, 3 to 45% of BaO, 0 to 30% of ZnO, 0 to 20% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of Bi2O3, 0 to 5% of La2O3, 0 to 5% of Gd2O3 and 0 to 5% of Y2O3, the total content of these components being at least 98%, and a precision press-molding preform, which is formed of a phosphate glass containing CuO, an alkali metal oxide, BaO and ZnO and having a BaO content/ZnO content molar ratio (BaO/ZnO) of greater than 1.Type: GrantFiled: April 1, 2008Date of Patent: November 17, 2009Assignee: Hoya CorporationInventors: Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 7608551Abstract: New and improved compositions of doped and co-doped bismuth fluorophosphate glasses for lasers is disclosed that have a high refractive index (nD) of approximately 1.6 and higher, high transmission in the near infrared part of the spectrum, and a wide glass forming domain. The disclosed glass systems Al(PO3)3—Ba(PO3)2—Bi(PO3)3—BaF2+RFx+dopands use dopants from the group of oxides and or fluorides of rare earth elements Nd, Er, Yb, Tm, Tb, Ho, Sm, Eu and Pr as well as MnO and mixtures thereof over 100 percent (wt %) of the glass-base composition. These glasses have high chemical durability, radiation resistance, efficiency of laser use in the infrared and blue spectrum, and improved duration of luminescence.Type: GrantFiled: July 5, 2005Date of Patent: October 27, 2009Inventors: Alfred A. Margaryan, Ashot A. Margaryan
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Patent number: 7603876Abstract: An optical glass that has high-refractivity and high-dispersion properties, that is less colored and that is suitable for a shapable glass material for press-shaping and various optical elements, the optical glass containing, as glass components and by mass %, 10 to 32% of P2O5, 27 to 65% of Nb2O5, 10 to 30% of BaO, 0 to 12% of B2O3, more than 0% but not more than 20% of TiO2, more than 0% but not more than 10% of total of Li2O, Na2O and K2O, and more than 0% but not more than 1%, based on the total content of the said glass components, of Sb2O3, and having a light transmittance that is 50% at a wavelength of 420 nm or shorter.Type: GrantFiled: August 13, 2004Date of Patent: October 20, 2009Assignee: Hoya CorporationInventor: Koichiro Shiraishi
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Patent number: 7598188Abstract: Ceramic materials and articles comprising at least 35 percent by weight Al2O3, and a plurality of cells having an average cell size of less than 3 micrometers.Type: GrantFiled: December 30, 2005Date of Patent: October 6, 2009Assignee: 3M Innovative Properties CompanyInventors: Anatoly Z. Rosenflanz, Berkan K. Endres, Thomas J. Anderson
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Patent number: 7598189Abstract: Phosphate optical glass having an Abbé number, ?d, of greater than 59. A preform for precision press molding being comprised of the phosphate optical glass. An optical glass being comprised of the phosphate optical glass and manufacturing method of the same. Provided are low-dispersion phosphate optical glass having a low-temperature softening property and good weatherability, suited to precision press molding, and further having good devitrification stability, a preform for precision press molding comprised of the above glass and a method of manufacturing of the same, a glass optical element having the above optical characteristics as well as good weatherability and a method of manufacturing the same.Type: GrantFiled: August 3, 2005Date of Patent: October 6, 2009Assignee: Hoya CorporationInventors: Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 7595272Abstract: A low-dispersion optical glass suitable for producing a quality preform from a molten glass and suitable for precision press-molding, which is a fluorophosphate glass containing, as essential cationic components, P5+, Al3+, at least two members selected from Mg2+, Ca2+, Sr2+ and Ba2+ as divalent cationic components (R2+) and Li+ and containing, by cationic %, 10 to 45% of P5+, 5 to 30% of Al3+, 0 to 20% of Mg2+, 0 to 25% of Ca2+, 0 to 30% of Sr2+, 0 to 33% of Ba2+, 1 to 30% of Li+, 0 to 10% of Na+, 0 to 10% of K+, 0 to 5% of Y3+, and 0 to 15% of B3+, the molar ratio of the content of F? to the total content of F? and O2?, F?/(F?+O2?), being 0.25 to 0.85, the optical glass having a refractive index (Nd) of 1.40 to 1.58 and an Abbe's number (?d) of 67 to 90.Type: GrantFiled: March 27, 2006Date of Patent: September 29, 2009Assignee: Hoya CorporationInventors: Mikio Ikenishi, Xuelu Zou
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Publication number: 20090239731Abstract: A zinc and bismuth containing, water-soluble glass composition comprising from 10 to 75 mole % P205, 5-50 mole % alkali metal oxide, up to 40 mole % Zn0 and up to 40 mole % Bi203.Type: ApplicationFiled: May 29, 2009Publication date: September 24, 2009Applicant: RECKITT BENCKISER N.V.Inventors: Karlheinz Ulrich Gerhard Hahn, KARIN WERNER
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Patent number: 7582579Abstract: The object of the present invention is to provide an optical glass which has optical constants such as a refractive index of from 1.45 to 1.65 and an Abbe number of at least 65 and which is yet excellent in chemical durability. A phosphate optical glass comprising, as glass components by mass %, from 73 to 85 of P2O5, from 14 to 26 of Al2O3, from 1 to 12 of K2O+Li2O, from 0 to 12 of SiO2, from 0 to 12 of B2O3, from 0 to 12 of Na2O, from 0 to 12 of Y2O3, from 0 to 12 of La2O3, from 0 to 12 of MgO+CaO+SrO+BaO, from 0 to 10 of ZrO2+TiO2+Gd2O3, from 0 to 10 of Ta2O5+GeO2+Ga2O3+Nb2O5+WO3+TeO2, from 0 to 2 of Sb2O3, and from 0 to 12 of ZnO+PbO.Type: GrantFiled: April 28, 2008Date of Patent: September 1, 2009Assignee: Asahi Glass Company, LimitedInventors: Hiroyuki Ohkawa, Naoki Sugimoto
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Patent number: 7538051Abstract: An optical glass has optical constants represented by a refractive index (nd) of 1.46 to 1.58 and an Abbe's number (?d) of 65 to 74, has excellent hot preform shapeability, low softenability and excellent climate resistance, and comprises, by mol %, 45 to 65% of P2O5, 8 to 19% of Al2O3, 5 to 30% of MgO, 1 to 25% of a total of Li2O, Na2O and K2O, 0 to 16% of B2O3, 0 to 25% of ZnO, 0 to 25% of CaO, 0 to 25% of SrO, 0 to 30% of BaO, 0 to 10% of La2O3, 0 to 10% of Gd2O3, 0 to 10% of Y2O3, 0 to 10% of Yb2O3 and 0 to 10% of Lu2O3, and the total content of the above components of the optical glass is at least 95%.Type: GrantFiled: October 29, 2003Date of Patent: May 26, 2009Assignee: Hoya CorporationInventors: Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 7531474Abstract: Disclosed is an optical glass having high-refractivity and high-dispersion properties and having little coloring, said glass containing P2O5, Nb2O5 and TiO2 as glass components, containing Sb2O3 in an amount of over 0% by weight but not more than 1% by weight based on the total content of the glass components excluding Sb2O3, having a refractive index (nd) of 1.91 or more and an Abbe's number (?d) of 21 or less and having a light transmittance that comes to be 70% at a wavelength of 500 nm or less.Type: GrantFiled: January 21, 2005Date of Patent: May 12, 2009Assignee: Hoya CorporationInventor: Kouichiro Shiraishi
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Patent number: 7531473Abstract: A new ytterbium-phosphate glass and a method for producing the same are disclosed. The glass finds special use in forming laser glass. Previously the level of ytterbium that could be incorporated into a phosphate glass without leading to formation of crystals or devitrification was limited. It has been found that much higher levels of ytterbium can be incorporated if an initial glass melt is formed from phosphate and ytterbium prior to adding the other components. Using the present process ytterbium-phosphate glasses having up to 30 mole percent ytterbium can be created. The new glasses function as well and often better than previous ytterbium containing glasses as laser glasses especially when combined with one or more of the lasing ions erbium oxide, neodymium oxide, holmium oxide or thulium oxide.Type: GrantFiled: August 23, 2005Date of Patent: May 12, 2009Assignee: Kigre, Inc.Inventor: John D. Myers
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Publication number: 20090075803Abstract: A method of making an article from an aluminum oxide glass is disclosed. The aluminum oxide glass includes zirconium oxide and either calcium oxide or strontium oxide. The aluminum oxide glass has a glass transition temperature and a crystallization temperature, and these temperatures differ by at least 25K. The method includes: providing a glass in a form comprising particles, beads, microspheres, or fibers; heating the glass above the Tg such that the particles, beads, microspheres, or fibers coalesce to form a coalesced shape; and cooling the coalesced shape to form the article.Type: ApplicationFiled: November 26, 2008Publication date: March 19, 2009Inventor: Anatoly Z. Rosenflanz
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Patent number: 7498283Abstract: A glass powder having an average particle size of at least 0.5 ?m and smaller than 5.0 ?m, having a specific surface area of at least 1.5 m2/cm3, and having a glass transition temperature higher than 200° C. and lower than 400° C.Type: GrantFiled: July 25, 2005Date of Patent: March 3, 2009Assignee: Asahi Fiber Glass Company, LimitedInventors: Hideki Nakagawa, Hideki Endou
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Publication number: 20090023574Abstract: The invention relates to dental glass-ceramics and a process for producing them and their use, with these comprising at least one crystal phase containing xenotime or monazite or mixtures thereof.Type: ApplicationFiled: May 31, 2006Publication date: January 22, 2009Applicant: Ivoclar Vivadent AGInventors: Wolfram Holand, Christian Ritzberger, Volker Rheinberger, Elke Apel
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Patent number: 7456142Abstract: A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO.Type: GrantFiled: July 11, 2007Date of Patent: November 25, 2008Assignee: Reckitt Benckiser N.V.Inventor: Karlheinz Ulrich Gerhard Hahn
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Patent number: 7439201Abstract: The invention is directed to lead-free glass frit compositions that can be used as sealing frits, the compositions being a blend of: (1) at least one of two glass families which are SnO—ZnO—P2O5 and alkali-ZnO—P2O5 glasses; and (2) at least one cerammed filler material having a crystalline phase selected from the group consisting of beta-quartz, beta-eucryptite, cordierite, and beta-spodumene. The blends of the invention have flow characteristics that enable them to be used at sealing temperatures in the range of 450-550° C., and a CTE value in the range of 60-90×10?7/° C.Type: GrantFiled: August 29, 2006Date of Patent: October 21, 2008Assignee: Corning IncorporationInventors: Melinda Ann Drake, Sasha Marjanovic, Lisa A. Lamberson, Robert Michael Morena
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Patent number: 7435695Abstract: Disclosed are zinc niobium phosphate glasses consisting essentially, expressed in terms of mole percent on the oxide basis of, 40-65% P2O5, 25-37% ZnO, 0.1-15% Nb2O5, 0-6% Al2O3, 0-5% Bi2O3, 0-3% Na2O and 0-5% B2O3, said glass exhibiting glass transition temperature below 450° C., a dilatometer softening point below 500° C., coefficient of expansion in the range of 80-120×10?7° C.?1, good chemical durability and blue color. The glass of the present invention is useful for sealing optical fiber to ferrule by local heating.Type: GrantFiled: December 9, 2004Date of Patent: October 14, 2008Assignee: B.G. Negev Technologies and Applications Ltd.Inventor: Jacob Hormadaly
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Publication number: 20080207427Abstract: The object of the present invention is to provide an optical glass which has optical constants such as a refractive index of from 1.45 to 1.65 and an Abbe number of at least 65 and which is yet excellent in chemical durability. A phosphate optical glass comprising, as glass components by mass %, from 73 to 85 of P2O5, from 14 to 26 of Al2O3, from 1 to 12 of K2O+Li2O, from 0 to 12 of SiO2, from 0 to 12 of B2O3, from 0 to 12 of Na2O, from 0 to 12 of Y2O3, from 0 to 12 of La2O3, from 0 to 12 of MgO+CaO+SrO+BaO, from 0 to 10 of ZrO2+TiO2+Gd2O3, from 0 to 10 of Ta2O5+GeO2+Ga2O3+Nb2O5+WO3+TeO2, from 0 to 2 of Sb2O3, and from 0 to 12 of ZnO+PbO.Type: ApplicationFiled: April 28, 2008Publication date: August 28, 2008Applicant: Asahi Glass Company, LimitedInventors: Hiroyuki Ohkawa, Naoki Sugimoto
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Publication number: 20080190034Abstract: Ceramic materials and articles comprising at least 35 percent by weight Al2O3, and a plurality of cells having an average cell size of less than 3 micrometers.Type: ApplicationFiled: December 30, 2005Publication date: August 14, 2008Inventors: Anatoly Z. Rosenflanz, Berkan K. Endres, Thomas J. Anderson
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Patent number: 7396787Abstract: The lead-free, preferably lithium-free, optical glass is useful in imaging, projection, telecommunications, optical communication and/or laser technology, particularly for making precise-pressed optical elements. It has a refractive index nd of 1.50 to 1.57, an Abbé number ?d of 61 to 70. It also has a low transformation temperature of about or below 400° C., good production and processing properties and crystallization resistance. It has a composition, in percent by weight, based on oxide content of P2O5, 40 to 60; Al2O3, 1 to 20; B2O3, 0 to <5; Na2O, 0 to 30; K2O, 0 to 30; Li2O, 0 to <1; ?M2O, >15 to 40; BaO, 1 to 20; ZnO, 1 to 20; SrO, 0 to 5; CaO, 0 to 5; MgO, 0 to 5; and ?MO, 5 to 25. In addition, it may contain standard refining agents, although it is preferably free of arsenic and fluorine.Type: GrantFiled: January 13, 2005Date of Patent: July 8, 2008Assignee: Schott AGInventors: Simone Monika Ritter, Ute Woelfel, Silke Wolff
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Patent number: 7396786Abstract: A glass containing 5 to 25 mass % of P2O5, 0 to 15 mass % of B2O3, 0 to 5 mass % of SiO2+GeO2, 21 to 50 mass % of BaO+SrO, 0 to 3 mass % of Li2O+Na2O+K2O, and 35 to 65 mass % of Nb2O5, not substantially containing PbO, satisfying Nb2O5/(BaO+SrO)=0.85 to 2.20, having a dielectric constant of 15 or greater, a dielectric loss of 10.0×10?4 or less, and a resistivity of 1.0×1016 ?·cm or more.Type: GrantFiled: January 22, 2003Date of Patent: July 8, 2008Assignee: Kabushiki Kaisha OharaInventors: Masaaki Miyata, Kazuo Ohara
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Publication number: 20080132399Abstract: Disclosed are glass materials generally belonging to the P2O5—ZnO—TeO2 system and process for making the same. The glass may comprise Bi2O3 as well. The high refractive index and low Tg materials are particularly suitable for refractive lens elements for use in portable optical devices. The process involves the use of P2O5 source materials with reduced amounts of reducing agents or a step of removing the reducing agents from such source materials by an oxidizing step such as calcination.Type: ApplicationFiled: February 7, 2007Publication date: June 5, 2008Inventors: Bruce Gardiner Aitken, James Edward Dickinson, Sinue Gomez
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Patent number: 7371703Abstract: An optical glass wherein an amount of change in refractive index (?n: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43 W, pulse repetition rate of 5 kHz and pulse width of 400 ns for one hour is 5 ppm or below is provided. The optical glass comprises a fluorine ingredient and/or a titanium oxide ingredient and/or an arsenic oxide ingredient. The optical glass suffers little change in refractive index by radiation of strong light having wavelengths of 300 nm to 400 nm such as ultraviolet laser.Type: GrantFiled: September 18, 2003Date of Patent: May 13, 2008Assignee: Kabushiki Kaisha OharaInventors: Akira Masumura, Muneo Nakahara, Satoru Matsumoto, Tatsuya Senoo
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Patent number: 7361632Abstract: A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P2O5, 10 to 30 mole % of alkali oxides, up to 5 mole % of SO3 and up to 25 mole % of ZnO.Type: GrantFiled: July 25, 2005Date of Patent: April 22, 2008Assignee: Reckitt Benckiser N.V.Inventor: Karlheinz Ulrich Gerhard Hahn
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Publication number: 20080039309Abstract: The lead-free optical glass can be used in the fields of imaging, sensor technology, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology, as well as of telecommunications, optical communication engineering and optics/lighting in the automotive sector. It has a refractive index nd of 1.82?nd?2.00 and/or an Abbe number vd of 18?vd?28 with good chemical stability, excellent crystallization stability and the following composition, in wt. based on oxide content, of: P2O5 12-35 Nb2O5 30-50 Bi2O3 ?2-13 GeO2 0.1-7?? Li2O ?6 Na2O ?6 K2O ?6 Cs2O ?6 MgO ?6 CaO ?6 SrO ?6 BaO ???7-<17 ZnO ?6 TiO2 ?7 ZrO2 ?7 WO3 ?2-14 F ??6.Type: ApplicationFiled: August 8, 2007Publication date: February 14, 2008Inventors: Silke Wolff, Simone Monika Ritter, Ute Woelfel
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Patent number: 7326367Abstract: This invention is related to thick film conductor compositions comprising electrically conductive gold powder, one or more glass frit or ceramic oxide compositions and an organic vehicle. It is further directed to the composition's uses for LTCC (low temperature co-fired ceramic) tape, for fabrication of multilayer electronic circuits and in high frequency microelectronic applications.Type: GrantFiled: April 5, 2006Date of Patent: February 5, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Patricia J. Ollivier, Kenneth Warren Hang
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Patent number: 7312169Abstract: The present invention provides a high refractive index, high dispersion optical glass for precision molding, being free from harmful materials causing environmental problems, such as lead oxide, etc., and having a low yield temperature, a refractive index (nd) of at least 1.83 and an Abbe number (?d) of at most 26.0 and further providing a low softening property as well as an improved mass production property with less coloration, which is represented in terms of for making up the glass, by the following chemical composition (wt %): P2O5 15 to 29% B2O3 ?0 to 2% GeO2 ?0 to 14% Sum of P2O5 + B2O3 + GeO2 20 to 35% Li2O ?0 to 5% Na2O ?3 to 14% K2O ?0 to 9% Sum of Li2O + Na2O + K2O ?5 to 15% Nb2O5 ?2 to less than 22% Bi2O3 34 to 60% WO3 ?0 to 5% BaO ?0 to 5% In2O3 ??0 to 7%.Type: GrantFiled: November 4, 2004Date of Patent: December 25, 2007Assignee: Sumita Optical Glass, Inc.Inventors: Yoshinori Yamamoto, Naruhito Sawanobori, Shinobu Nagahama
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Publication number: 20070243991Abstract: A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.Type: ApplicationFiled: March 30, 2007Publication date: October 18, 2007Inventors: Richard K. Brow, Signo T. Reis, Mariano Velez, Delbert E. Day
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Patent number: 7192897Abstract: Provided are near-infrared light-absorbing glass in which good color compensating characteristics are maintained even without containing harmful arsenic, permitting the thinning of the glass, and having good weatherability and forming properties; a near-infrared light-absorbing element comprised of such glass; a near-infrared light-absorbing filter employing such glass. Also provided, at low cost, are near-infrared light-absorbing glass permitting good color compensating, a near-infrared light-absorbing element comprised of such glass, and a near-infrared light-absorbing filter comprising such elements. The glass comprises cationic components with a certain composition as well as F? and O2? as anionic components. Alternatively, the glass is near-infrared light-absorbing glass, wherein the glass exhibits properties, based on a thickness of 0.Type: GrantFiled: July 3, 2003Date of Patent: March 20, 2007Assignee: Hoya CorporationInventors: Rie Yamane, Youichi Hachitani, Xuelu Zou
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Patent number: 7151064Abstract: An optical glass suitable for mold forming having a metal composition in wt % in terms of metal oxides calculated from the composition of the following components: P2O5 34–50%, Li2O 2–9%, Na2O 7–28%, K2O 3–27%, provided that the total of R2O is 17–41% (R: Li, Na, K), Al2O3 6.5–30%, ZnO 0–22%, BaO 0–21%, SrO 0–18%, CaO 0–16%, MgO 0–14%, provided that the total of R?O is 0–34% (R?: Zn, Ba, Sr, Ca, Mg), ZrO2 0–1.5% and F 1.5–32% relative to the total weight of the oxides, and exhibits a glass transition temperature (Tg) of 350° C. or lower and a specific gravity (Sg) of 3.1 or less and is excellent in chemical durability. The optical glass can be press formed at a low temperature of about 270 to 400° C.Type: GrantFiled: October 29, 2002Date of Patent: December 19, 2006Assignee: Sumita Optical Glass, Inc.Inventors: Masaaki Otsuka, Naruhito Sawanobori, Shinobu Nagahama
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Patent number: 7141524Abstract: The lead-free, Li2O-free, CuO-free and preferably arsenic-free optical glass is suitable for applications in the fields of imaging, projection, telecommunications, optical communication technology and/or laser technology, and has a refractive index nd of 1.55?nd?1.60, an Abbe number Vd of 54?Vd?63 and a transformation temperature Tg?500° C. This optical glass has good production and processing properties and crystallization stability, and, at the same time, advantageously does not contain PbO and As2O3. These glasses contain, in percent by weight based on oxide content: P205, 43-56; ZnQ, 21-36; Al2O3, 0-6; Na2O, 0-16; K2O, 0-8; ?M2O ?16; MgO, 0-5; CaO, 0-5; BaO, 3-14; B2O3, 0-8; La2O3, 0-7. In addition, it may also contain standard refining agents.Type: GrantFiled: August 19, 2003Date of Patent: November 28, 2006Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel
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Patent number: 7060640Abstract: An optical glass comprises, in mass percent, 15–35% of P2O5, 40–60% of Nb2O5, 0.5% to less than 15% of Na2O and 3% to less than 25% of BaO, has a ratio in mass % of (BaO+Nb2O5)/{(TiO2+WO3)×3+Bi2O3+Nb2O5}>1.0; is free of Pb and As; and has a refractive index (nd) within a range from 1.78 to 1.90 and an Abbe number (?d) within a range from 18 to 27.Type: GrantFiled: July 10, 2003Date of Patent: June 13, 2006Assignee: Kabushiki Kaisha OharaInventors: Michiko Ogino, Yoshio Mori, Masahiro Onozawa
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Patent number: 7033966Abstract: An optical glass which contains at least 20 mol % of TeO2 and has an internal transmittance of at least 80% in a thickness of 2 mm to a light having a wavelength of 405 nm and a refractive index of at least 1.85 to the same light, and which contains no alkali metal oxide or contains alkali metal oxides in a total amount of at most 15 mol %.Type: GrantFiled: May 19, 2004Date of Patent: April 25, 2006Assignee: Asahi Glass Company, LimitedInventors: Tomoyuki Kobayashi, Minoru Sekine, Naoki Sugimoto, Syuji Matsumoto
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Patent number: 7005396Abstract: The present invention provides a composition for use in forming an enamel cover coat from which baked-on foods can be removed without the need for pyrolysis or highly alkaline cleaners. The enamel cover coat preferably exhibits no chipping or other surface defects subsequent to a 2.0 mm Plum Jam Test and an acid resistance of A or better according to ISO 2722. The composition according to the invention includes a glass component including at least a first glass frit comprising a low SiO2 glass frit. Preferably, the glass component includes a blend of the first glass frit and at least a second glass frit. Preferably, the first glass frit includes by weight from about 30% to about 45% P2O5, from about 20% to about 40% Al2O3, from about 15% to about 35% Li2O+Na2O+K2O, up to about 15% B2O3, up to about 15% MgO+CaO+SrO+BaO+ZnO, up to about 10% TiO2+ZrO2, and up to about 10% SiO2.Type: GrantFiled: June 25, 2001Date of Patent: February 28, 2006Assignee: Ferro France-S.A.R.L.Inventors: Sophie Espargillière, Andreas Schanné, Francois Roques
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Patent number: 7001858Abstract: Glass fiber which substantially has the following composition as represented by mol percentage and has a glass transition temperature higher than 300° C. and lower than 400° C.: Li2O+Na2O+K2O: 5 to 35%, P2O5: 20 to 27%, SO3: 3 to 20%, ZnO: 10 to 55%, MgO: 0 to 20%, ZnO+MgO: 10 to 55%, Al2O3: 1 to 5%, and B2O3: 8 to 20%.Type: GrantFiled: February 12, 2003Date of Patent: February 21, 2006Assignees: Asahi Glass Company, Limited, Asahi Fiber Glass Company, LimitedInventors: Hideki Nakagawa, Yoshiro Niino, Yoshinao Kobayashi
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Patent number: 6995101Abstract: An optical glass having a high refractive index and high dispersion characteristics suitable for application to precision press molding to precisely mold final products without requiring grinding or polishing. An optical glass can be prepared exhibiting a refractive index in the range of from 1.75 to 2.0, and an Abbé number in the range of from 20 to 28.5. Optical parts comprised of this glass; press-molding materials comprised of this glass; methods of manufacturing the same; and methods of manufacturing molded glass products employing these materials. A suitable optical glass is composed of the following in molar percent: 15–30% P2O5; 0.5–15% B2O3; 5–25% Nb2O5; 6–40% WO3; 4–45% of at least one of Li2O, Na2O or K2O; 1–5% K2O; 2–9% TiO2; and 0–30% (excluding 30%) of at least one RO selected from among BaO, ZnO, and SrO; with the total content of the above-stated components being equal to or more than 95 percent.Type: GrantFiled: June 29, 2001Date of Patent: February 7, 2006Assignee: Hoya CorporationInventors: Xuelu Zou, Hiromasa Tawarayama, Kazutaka Hayashi, Hiroshi Kawazoe
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Patent number: 6984261Abstract: The invention relates to uses of glasses and glass-ceramics in dental and orthodontic applications.Type: GrantFiled: February 5, 2003Date of Patent: January 10, 2006Assignee: 3M Innovative Properties CompanyInventors: Kevin M. Cummings, Jacqueline C. Rolf, Anatoly Z. Rosenflanz, Richard P. Rusin, Jerome E. Swanson
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Patent number: 6950597Abstract: A polymer-based waveguide device is for use in an optical amplifier or as a laser waveguide. The waveguide device includes a substrate (1), a polymer bottom cladding layer (21) on the substrate, a polymer channel waveguide (3) on the bottom cladding layer, and a polymer top cladding layer (22). The channel waveguide is doped with at least one kind of rare earth metal ion that can be excited to produce a laser. The bottom and top cladding layers have a same refractive index, which is substantially lower than a refractive index of the channel waveguide. When a light signal is input to the waveguide device, an amplified light signal is obtained and is transmitted within the channel waveguide.Type: GrantFiled: April 3, 2003Date of Patent: September 27, 2005Assignee: Hon Hai Precision Ind. Co., Ltd.Inventors: Ga-Lane Chen, Charles Leu