And Boron Patents (Class 501/47)
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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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Patent number: 7309670Abstract: The present invention relates to optical glass having a high refractive index, high dispersion, and a low glass transition temperature; a preform comprised of the optical glass for precision press-molding and a method of manufacturing the same; and an optical element comprised of the optical glass and a method of manufacturing the same.Type: GrantFiled: April 19, 2004Date of Patent: December 18, 2007Assignee: Hoya CorporationInventors: Yasuhiro Fujiwara, Xuelu Zou
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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: 7157391Abstract: An optical glass being free of lead and fluorine, having a low glass transition temperature permitting press-molding with a mold formed of stainless steel and having high climate resistance includes an optical glass comprising, by mol %, 25 to 44% of P2O5, 10 to 40% of a total of Li2O, Na2O and K2O, 5 to 40% of ZnO, 1 to 35% of BaO and at least one components selected from Nb2O5, Bi2O3 and WO3, having a glass transition temperature (Tg) of 370° C. or lower and being free of lead and fluorine and an optical glass which is free of lead and fluorine, has a mass loss ratio of less than 0.25% when immersed in pure water, and has a glass transition temperature (Tg) of 370° C. or lower.Type: GrantFiled: December 24, 2003Date of Patent: January 2, 2007Assignee: Hoya CorporationInventors: Yoshiko Kasuga, Xuelu Zou
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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: 7141525Abstract: 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 (At), i.e. at most 580° C., a refractive index (nd) of at least 1.89 and an Abbe number (?d) of at most 23.0 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 3 to 20% B2O3 0 to 5% GeO2 more than 14 to 37% Sum of P2O5 + B2O3 + GeO2 24 to 43% Li2O 0 to 5% Na2O 0 to 8% K2O 0 to 10% Sum of Li2O + Na2O + K2O 1 to 10% Nb2O5 0 to 50% Bi2O3 12 to 67% BaO 0 to 5% WO3 0 to 12%.Type: GrantFiled: November 4, 2004Date of Patent: November 28, 2006Assignee: Sumita Optical Glass, Inc.Inventors: Yoshinori Yamamoto, Koichi Tsuchiya, Naruhito Sawanobori, Shinobu Nagahama
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Patent number: 7115536Abstract: A rare earth containing glass nominally based on the ternary P2O5—WO3—Na2O-Ln2O3 compositional space, with WO3>30-65 mole %, Na2O 15-35 mole %, P2O5 5-65 mole %, Ln2O3 (Ln=one or more cations selected from lanthanum or any of the rare earth oxides) up to the limit of solubility; with optional additives, MoO3 being a preferred additive, that can be employed alone or in combination at levels up to 15 mole %.Type: GrantFiled: March 5, 2003Date of Patent: October 3, 2006Assignee: Schott Glass Technologies, Inc.Inventors: Joseph Hayden, Sally Pucilowski, Bianca Schreder, Ulrich Peuchert, Ruediger Sprengard, Martin Letz
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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: 6927185Abstract: As-prepared AlPO4—B2O3—Na2O-based glasses were placed in an autoclave together with distilled water and were treated at 150° C. for two hours. Although the specific surface area of the as-prepared glass prior to autoclave treatment was negligibly small, the autoclave treatment dissolved most of the borate component and the sodium component to obtain a mesoporous material having a specific surface area of 236 m2/g and a pore size distribution of 5 to 10 nm. This mesoporous material is hydrophobic and has weak solid acidity and small polarity.Type: GrantFiled: January 11, 2002Date of Patent: August 9, 2005Assignee: Japan Science and Technology CorporationInventors: Shoji Yamanaka, Toshiyuki Sasaki
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Patent number: 6911160Abstract: A high-gain phosphate glass composition, which can be used to produce ultra-short gain length lasers and optical amplifiers is described wherein the composition of the glass in addition to exhibiting high gain for lasers and amplifiers, also exhibits high thermal shock resistance, high cross section, insignificant concentration quenching, and high solubility for rare earth ions and other properties which enable the material to be fabricated into a new class of ultra-short length micro-laser, fiber laser and amplifier configurations and designs.Type: GrantFiled: March 21, 2003Date of Patent: June 28, 2005Assignee: Kigre, Inc.Inventors: John D. Myers, Michael J. Myers
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Patent number: 6878765Abstract: A method for producing a component from a glass/polymer mixture where, a component is formed from a mixture of a thermoplastic with a processing temperature T1 and first glass particles with saturated surface bonds and a glass temperature T2<T1, at a temperature T3>T1. By melting the first glass particles, second glass particles are produced with surface bonds which can be saturated. The bonds are saturated by being bonded to the thermoplastic.Type: GrantFiled: December 13, 2000Date of Patent: April 12, 2005Assignee: Siemens AktiengesellschaftInventors: Robert Greiner, Angelo Polese
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Patent number: 6875714Abstract: An optical glass consists essentially, expressed in term of weight percent, of: P2O5: 20.0 to 30.0%, B2O3: 0.5 to 10.0%, Nb2O5: 5.0 to 50.0%, WO3: 15.0 to 27.0%, Bi2O3: 0.1 to 3.0%, ZnO: 1.0 to 7.0%, Li2O: 0 to 8.0%, Na2O: 0 to 15.0%, K2O: 0 to 15.0%, and Li2O+Na2O+K2O: 5.0 to 20.0%.Type: GrantFiled: April 25, 2003Date of Patent: April 5, 2005Assignee: Minolta Co., Ltd.Inventor: Manabu Izuki
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Patent number: 6841493Abstract: The present invention is directed to a glass composition comprising, based on mole %, 15-35% MO where M is selected from BaO, CaO, MgO, PbO, SrO and mixtures thereof, 30-60% TiO2, 10-30% B2O3, 1-7% P2O5, 0-3% Li2O and 2-16% Ln2O3 where Ln is selected from the group of rare earth elements and mixtures thereof. The invention is further directed to the glass composition incorporated in a thick film composition or a castable dielectric composition comprising a dispersion of finely divided solids comprising, based on solids: (a) 30-100 wt. % the glass composition; (b) 0-50 wt. % ceramic filler; both dispersed in a solution of (c) an organic polymeric binder; and (d) a volatile organic solvent. The invention is still further directed to the castable dielectric composition used in a method of forming a high K green tape by casting a thin layer of the castable dispersion onto a flexible sheet and heating the cast layer to remove the volatile organic solvent.Type: GrantFiled: March 17, 2003Date of Patent: January 11, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Yong Cho, Kenneth Warren Hang
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Patent number: 6838171Abstract: An antibacterial fiber and twisted yarn having an antibacterial imparting glass composition complexed therewith. The glass composition comprises 0.1-5.0 % by weight of Ag2O in a composition containing 45-67 mol % of P2O5, 5-20 mol % of A12O3, 1-22 mol % of one or more selected from MgO, CaO and ZnO, and 1-20 mol % of B2O3. An antibacterial fiber contains the antibacterial imparting glass composition in a ratio of 0.1-2.5%.Type: GrantFiled: April 11, 2003Date of Patent: January 4, 2005Inventor: Makio Nomura
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Publication number: 20040266602Abstract: The present invention relates to optical glass having a high refractive index, high dispersion, and a low glass transition temperature; a preform comprised of the optical glass for precision press-molding and a method of manufacturing the same; and an optical element comprised of the optical glass and a method of manufacturing the same.Type: ApplicationFiled: April 19, 2004Publication date: December 30, 2004Applicant: HOYA CORPORATIONInventors: Yasuhiro Fujiwara, Xuelu Zou
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Publication number: 20040259714Abstract: The present invention relates to low-dispersion optical glass having a low glass-transition temperature suited to precision press molding, a press molding preform comprised of this glass, a method of manufacturing the same, an optical element, and a method of manufacturing the same. The optical glass comprises, 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 Al2O3; 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 press molding preform is comprised of the optical glass.Type: ApplicationFiled: April 16, 2004Publication date: December 23, 2004Applicant: HOYA CORPORATIONInventors: Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 6815379Abstract: An antibacterial cloth having an antibacterial imparting glass composition complexed therewith. The glass composition comprises 0.1-5.0% by weight of Ag2O in a composition containing 45-67 mol % of P2O5, 5-20 mol % of Al2O3, 1-22 mol % of one or ore selected from MgO, CaO and ZnO, and 1-20 mol % of B2O3. An antibacterial fiber contains the antibacterial imparting glass composition in a ratio of 0.1-2.5%.Type: GrantFiled: April 11, 2003Date of Patent: November 9, 2004Assignee: Ishizuka Garasu Kabushiki KaishaInventor: Makio Nomura
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Patent number: 6809049Abstract: The present invention provides glass compositions that can be used instead of known glass compositions containing a large amount of PbO in applications such as coating ceramic substrates, e.g., alumina, or sealing fluorescent tubes or the like. The invention also provides glass forming materials containing the glass compositions as a primary component for glass formation. Glass compositions provided by the present invention are comprises essentially of primary oxide components. The primary oxide components include ZnO, B2O3 and P2O5 as essential components and Al2O3, MgO, CaO and BaO as optional components. The amount of the primary oxide components is 85 wt % or more (preferably 90 wt % or more) of the total weight of the glass composition. Typically, the primary oxide components include 45 to 80% of ZnO, 5 to 45% of B2O3, 1 to 35% of P2O5, 0 to 10% of Al2O3, 0 to 15% of MgO, 0 to 10% of CaO, and 0 to 5% of BaO.Type: GrantFiled: November 21, 2002Date of Patent: October 26, 2004Assignee: Noritake Co., Ltd.Inventor: Jun Hirose
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Publication number: 20040182285Abstract: A modified alkali silicate composition for forming an inorganic polymer matrix having improved mechanical properties. The modified alkali silicate matrix is made by reacting an alkali silicate (or its precursors such as an alkali hydroxide, a SiO2 source and water), a non-silicate network former and/or reactive glass, water and optionally one or more multivalent cation(s) selected from Groups 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16 of the periodic table such as an alkaline earth salt, water and optional processing aids. An inorganic matrix composite can be prepared by applying a slurry of the modified aqueous alkali silicate composition to a reinforcing medium and curing the composite at a temperature from about 15° C. up to 1000° C. and a pressure of up to 20,000 psi for typical high-performance organic polymer processing (temperatures about 15° C. to about 200° C. and pressures <200 psi).Type: ApplicationFiled: February 12, 2004Publication date: September 23, 2004Inventors: Anthony M. Mazany, John W. Robinson, Craig L. Cartwright
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Publication number: 20040176236Abstract: A rare earth containing glass nominally based on the ternary P2O5 —WO3—Na2O—Ln2O3 compositional space, with WO3>30-65 mole %, Na2O 15-35 mole %, P2O5 5-65 mole %, Ln2O3 (Ln=one or more cations selected from lanthanum or any of the rare earth oxides) up to the limit of solubility; with optional additives, MoO3 being a preferred additive, that can be employed alone or in combination at levels up to 15 mole %.Type: ApplicationFiled: March 5, 2003Publication date: September 9, 2004Applicant: SCHOTT GLASS TECHNOLOGIES, INC.Inventors: Joseph Hayden, Sally Pucilowski, Bianca Schreder, Ulrich Peuchert, Ruediger Sprengard, Martin Letz
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Publication number: 20040138043Abstract: An optical glass being free of lead and fluorine, having a low glass transition temperature permitting press-molding with a mold formed of stainless steel and having high climate resistance includes an optical glass comprising, by mol %, 25 to 44% of P2O5, 10 to 40% of a total of Li2O, Na2O and K2O, 5 to 40% of ZnO, 1 to 35% of BaO and at least one components selected from Nb2O5, Bi2O3 and WO3, having a glass transition temperature (Tg) of 370° C. or lower and being free of lead and fluorine and an optical glass which is free of lead and fluorine, has a mass loss ratio of less than 0.25% when immersed in pure water, and has a glass transition temperature (Tg) of 370° C. or lower.Type: ApplicationFiled: December 24, 2003Publication date: July 15, 2004Inventors: Yoshiko Kasuga, Xuelu Zou
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Patent number: 6743743Abstract: Optical glasses and optical articles comprised of the optical glass are disclosed. One of which comprises, by means of weight percentages, more than 32 percent and not more than 45 percent P2O5, more than 0.5 percent and not more than 6 percent Li2O, more than 5 percent and not more than 22 percent Na2O, 6-30 percent Nb2O5, 0.5-10 percent B2O3, 0-35 percent WO3, 0-14 percent K2O, and 10-24 percent Na2O+K2O, and the total of all the above components is not less than 80 percent.Type: GrantFiled: January 29, 2002Date of Patent: June 1, 2004Assignee: Hoya CorporationInventor: Koichi Sato
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Patent number: 6737375Abstract: Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12:1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.Type: GrantFiled: March 16, 2001Date of Patent: May 18, 2004Assignee: Corning IncorporatedInventors: Carol L. Buhrmaster, Robert Morena, Kamjula P. Reddy, Randall E. Youngman
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Publication number: 20040092378Abstract: The lead-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: P2O5, 43-56; ZnO, 21-36; Al2O3, 0-6; Na2O, 0-16; K2O, 0-8; &Sgr;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: ApplicationFiled: August 19, 2003Publication date: May 13, 2004Inventors: Silke Wolff, Ute Woelfel
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Publication number: 20040018933Abstract: 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 (&ngr;d) within a range from 18 to 27.Type: ApplicationFiled: July 10, 2003Publication date: January 29, 2004Inventors: Michiko Ogino, Yoshio Mori, Masahiro Onozawa
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Publication number: 20040002417Abstract: There is provided an antibacterial fiber, an antibacterial twisted yarn and an antibacterial cloth which exhibits high durability to post-processing with water, detergent, staining or the like at a small added amount.Type: ApplicationFiled: April 11, 2003Publication date: January 1, 2004Applicant: Ishizuka Garasu Kabushiki KaishaInventor: Makio Nomura
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Publication number: 20040002416Abstract: There is provided an antibacterial fiber, an antibacterial twisted yarn and an antibacterial cloth which exhibits high durability to post-processing with water, detergent, staining or the like at a small added amount.Type: ApplicationFiled: April 11, 2003Publication date: January 1, 2004Applicant: Ishizuka Garasu Kabushiki KaishaInventor: Makio Nomura
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Patent number: 6656859Abstract: A family of tellurite glasses and optical components for telecommunication systems, the glasses consisting essentially of, as calculated in cation percent, 65-97% TeO2, and at least one additional oxide of an element having a valence greater than two and selected from the group consisting of Ta, Nb, W, Ti, La, Zr, Hf, Y, Gd, Lu, Sc, Al and Ga, that may contain a lanthanide oxide as a dopant, in particular erbium oxide, and that, when so doped, is characterized by a fluorescent emission spectrum having a relatively broad FWHM value.Type: GrantFiled: December 6, 2001Date of Patent: December 2, 2003Assignee: Corning IncorporatedInventors: Bruce G. Aitken, Adam J. G. Ellison, Randall E. Youngman
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Publication number: 20030220182Abstract: An optical glass consists essentially, expressed in term of weight percent, of: P2O5: 20.0 to 30.0%, B2O3: 0.5 to 10.0%, Nb2O5: 5.0 to 50.0%, WO3: 15.0 to 27.0%, Bi2O3: 0.1 to 3.0%, ZnO: 1.0 to 7.0%, Li2O: 0 to 8.0%, Na2O: 0 to 15.0%, K2O: 0 to 15.0%, and Li2O+Na2O+K2O: 5.0 to 20.0%.Type: ApplicationFiled: April 25, 2003Publication date: November 27, 2003Inventor: Manabu Izuki
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Patent number: 6645893Abstract: A glass includes (a) a matrix containing a compound of at least one nonmetallic element; and (b) a particle selectively formed in the matrix. This particle is made of the at least one nonmetallic element. A process for producing such glass includes (a) providing a blank glass containing a compound of at least one nonmetallic element; (b) condensing a pulsed laser beam to a focal point in the blank glass such that a particle is selectively formed in the blank glass at a position corresponding to the focal point, the particle being made of the at least one nonmetallic element dissociated from the compound; and (c) moving the focal point in the blank glass to produce a pattern of the particle. The glass is suitable for optical functional elements.Type: GrantFiled: February 21, 2001Date of Patent: November 11, 2003Assignee: Central Glass Company, LimitedInventors: Kiyotaka Miura, Seiji Fujiwara, Takuya Teshima, Natsuya Nishimura, Yoshinori Kubota
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Publication number: 20030181307Abstract: A high-gain phosphate glass composition, which can be used to produce ultra-short gain length lasers and optical amplifiers is described wherein the composition of the glass in addition to exhibiting high gain for lasers and amplifiers, also exhibits high thermal shock resistance, high cross section, insignificant concentration quenching, and high solubility for rare earth ions and other properties which enable the material to be fabricated into a new class of ultra-short length micro-laser, fiber laser and amplifier configurations and designs.Type: ApplicationFiled: March 21, 2003Publication date: September 25, 2003Inventors: John D. Myers, Michael J. Myers
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Publication number: 20030153449Abstract: 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.Type: ApplicationFiled: February 12, 2003Publication date: August 14, 2003Applicant: Asahi Glass Company, LimitedInventors: Hideki Nakagawa, Yoshiro Niino, Yoshinao Kobayashi
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Patent number: 6593260Abstract: An antibacterial property imparting glass composition is provided, which may be fixed in a form of, for example, a particle on the surface of a fiber substrate and/or dispersed and complexed in the fiber substrate. Such an antibacterial property imparting glass composition comprises 0.1 to 5.0% by weight of Ag2O in a composition containing 45-67 mol % of P2O5, 5 to 20 mol % of Al2O3, 1 to 40 mol % of 1 or 2 or more selected from MgO, CaO and ZnO, and 20 mol % or less of B2O3. An antibacterial fiber containing such an antibacterial property imparting glass composition at a ratio of, for example, 0.1 to 5.0% by weight shows high water resistance, acid resistance, alkali resistance and detergent resistance in antibacterial property.Type: GrantFiled: December 22, 2000Date of Patent: July 15, 2003Assignee: Ishizuka Garasu Kabushiki KaishaInventor: Makio Nomura
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Publication number: 20030125185Abstract: The present invention provides glass compositions that can be used instead of known glass compositions containing a large amount of PbO in applications such as coating ceramic substrates, e.g., alumina, or sealing fluorescent tubes or the like. The invention also provides glass forming materials containing the glass compositions as a primary component for glass formation. Glass compositions provided by the present invention are comprises essentially of primary oxide components. The primary oxide components include ZnO, B2O3 and P2O5 as essential components and Al2O3, MgO, CaO and BaO as optional components. The amount of the primary oxide components is 85 wt % or more (preferably 90 wt % or more) of the total weight of the glass composition. Typically, the primary oxide components include 45 to 80% of ZnO, 5 to 45% of B2O3, 1 to 35% of P2O5, 0 to 10% of Al2O3, 0 to 15% of MgO, 0 to 10% of CaO, and 0 to 5% of BaO.Type: ApplicationFiled: November 21, 2002Publication date: July 3, 2003Inventor: Jun Hirose
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Patent number: 6566289Abstract: The present invention provides a composition for use in forming a white porcelain enamel coating on aluminized or galvanized steel. The composition according to the present invention includes a solids portion including a glass component and a white pigment. The glass component includes one or more glass frits including by weight from about 30% to 50% P2O5, from about 15% to about 30% Al2O3, from about 8% to about 40% X2O where X=Na and/or K, up to about 30% TiO2, up to about 12% B2O3, up to about 10% K2O, up to about 10% ZnO, up to about 8% SiO2, up to about 7% La2O3, up to about 5% Li2O, and up to about 15% F. The white pigment include TiO2.Type: GrantFiled: August 17, 2001Date of Patent: May 20, 2003Assignee: Ferro France - S.A.R.L.Inventors: Alain Aronica, Emmanuel Marinho, David Coutouly, Luc Allemeersch, Christophe Reb
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Patent number: 6528442Abstract: To provide an optically transparent film containing 0.01 to 20% by weight glass forming oxide consisting of Nb2O5, V2O5, B2O3, SiO2, and P2O6; 0.01 to 20% by weight Al2O3 or Ga2O3; and 0.01 to 5% by weight hard oxide of ZrO2 and TiO2 as required; balance being ZnO, and a sputtering target for forming such a film. This sputtering target reduces occurrence of particles during sputtering, decreases the number of interruption or discontinuance of sputtering to improve production efficiency, and forms a protective film for optical disks with large transmittance and low reflectance.Type: GrantFiled: December 7, 2000Date of Patent: March 4, 2003Assignee: Nikko Materials Company, LimitedInventors: Katsuo Kuwano, Hideo Takami
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Patent number: 6528443Abstract: A composition for a water soluble glass is described. The composition is unusual in that it contains no or very small quantities (up to 5 mole %) of alkali earth metal compounds. The composition typically comprises P2O5: 40 to 60 mole %; B2O3: 0 to 10 mole %; Na2O: 30 to 40 mole %; K2O: 5 to 10 mole %; Ag2O: 0 to 5 mole %; and up to a total of 5 mole % of other compounds such as CaO, MgO etc. The composition is especially suitable for processing into water soluble glass fibers or wool since the melting point is very low, usually less than 350° C.Type: GrantFiled: January 18, 2001Date of Patent: March 4, 2003Assignee: Giltech LimitedInventor: David Michael Healy
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Patent number: 6514891Abstract: The present invention related to a dielectric composition of a solid state display. The dielectric composition can be P2O5—ZnO-BaO glass, SiO2—ZnO-Ba2O3 glass of PbO—ZnO—B2O3 glass, and an oxide filler with a binary compound including PbTiO3 or a ternary compound including PbTiO3 and PbZrO3.Type: GrantFiled: July 10, 2000Date of Patent: February 4, 2003Assignee: LG Electronics Inc.Inventor: Yoon Kwan Lee
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Publication number: 20020151424Abstract: Optical glasses and optical articles comprised of the optical glass are disclosed. One of which comprises, by means of weight percentages, more than 32 percent and not more than 45 percent P2O5, more than 0.5 percent and not more than 6 percent Li2O, more than 5 percent and not more than 22 percent Na2O, 6-30 percent Nb2O5, 0.5-10 percent B2O3, 0-35 percent WO3, 0-14 percent K2O, and 10-24 percent Na2O+K2O, and the total of all the above components is not less than 80 percent.Type: ApplicationFiled: January 29, 2002Publication date: October 17, 2002Applicant: HOYA CORPORATIONInventor: Koichi Sato
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Publication number: 20020119884Abstract: Glass frit compositions, calculated in mole percent on an oxide basis, consisting essentially of 24.5 to 29.0% P2O5; 1.0 to 5.0% B2O3; 1.0 to 2.0% Al2O3; and sufficient amounts of SnO and ZnO (51.5 to 66.5% SnO, and 5.0-12.0% ZnO), wherein the molar ratio of SnO:ZnO is in the range of about 5.0:1 to 12: 1, and 0.0 to 2.0% SiO2. The glass compositions exhibit, under NMR spectroscopic analysis of 11B nuclei, a signal containing at least two peaks at a chemical shift in the range of approximately −18 to −25 ppm. The frit compositions exhibit long term stability, durability, and resistance to attack against moisture in high temperature and humidity conditions and are capable of attaching optical fiber Bragg gratings without the use of a hermetic chamber and the like. An optoelectronic device that employs a sealing material that comprises a frit made from the glass compositions.Type: ApplicationFiled: December 21, 2000Publication date: August 29, 2002Inventors: Carol L. Buhrmaster, Robert Morena, Kamjula P. Reddy, Randall E. Youngman
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Patent number: 6432851Abstract: A durable low Tg Sb-stabilized Mo+W phosphate based glass composition exhibiting superior resistance to attack by boiling water, humidity and acids resulting from the addition of Sb to Mo+W phosphate based glass compositions. Specifically, the present invention discloses a glass composition comprising in mol % on the oxide basis, of 0-40% R2O where R includes the alkali metals (Li, Na, K, Rb or Cs) as well as Ag and Tl, 0-20% XO where X includes the alkaline earth metals (Mg, Ca, Sr or Ba) as well as Cu, Zn, Cd and Pb, 15-80% MoO3+WO3, 0.5-60% Sb2O3, and 10-40% P2O5. Additionally, the Sb-stabilized Mo+W phosphate based glass composition can contain a total of 0-5%, in mole percent (mol %) on the oxide basis, of glass forming oxides including, but not limited to, B2O3, Al2O3, SiO2, TeO2, Ga2O3, GeO2, transition metal and rare earth metal oxides, or mixtures thereof.Type: GrantFiled: May 31, 2000Date of Patent: August 13, 2002Assignee: Corning IncorporatedInventor: Bruce G. Aitken
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Patent number: 6409396Abstract: The present invention relates to a fiber optic system including a light source, a fiber optic transmission component, a receiver or transmitter of radiation, and an interference filter. The interference filter may include a glass substrate with at least two interference layers coated thereon. The glass substrate can include: Oxide Range P2O5 30-70 Al2O3 5-15 R′O 5-15 R′ = Mg, Ca, Sr, Ba, Zn, Pb R2O R = Li, Na, K 15-40 where the glass substrate has a coefficient of, thermal expansion of 130-210×10−7/° C. at 30° C. to 70° C.Type: GrantFiled: July 30, 2001Date of Patent: June 25, 2002Assignee: Schott Glass Technologies, Inc.Inventors: Alexander J. Marker, III, Sally Pucilowski, Joseph Hayden
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Publication number: 20020061809Abstract: The present invention provides a composition for use in forming a white porcelain enamel coating on aluminized or galvanized steel. The composition according to the present invention includes a solids portion including a glass component and a white pigment. The glass component includes one or more glass frits including by weight from about 30% to 50% P2O5, from about 15% to about 30% Al2O3, from about 8% to about 40% X2O where X=Na and/or K, up to about 30% TiO2, up to about 12% B2O3, up to about 10% K2O, up to about 10% ZnO, up to about 8% SiO2, up to about 7% La2O3, up to about 5% Li2O, and up to about 15% F. The white pigment include TiO2.Type: ApplicationFiled: August 17, 2001Publication date: May 23, 2002Applicant: Ferro France S.A.R.L.Inventors: Alain Aronica, Emmanuel Marinho, David Coutouly, Luc Allemeersch, Christophe Reb
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Patent number: 6376398Abstract: A dielectric composition for a plasma display panel. In the dielectric composition, a P2O5—ZnO—BaO group glass is used. Accordingly, the dielectric composition is capable of meeting optical, thermal and electrical characteristic requirements of a dielectric layer and allows the dielectric layer to have a light weight.Type: GrantFiled: April 7, 2000Date of Patent: April 23, 2002Assignee: LG Electronics Inc.Inventors: Yoon Kwan Lee, Byung Gil Ryu
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Publication number: 20020042337Abstract: An optical glass having a high refractive index and high dispersion characteristics that is suited to application to precision press molding to precisely mold the shape of final products for objectives not requiring grinding or polishing. An optical glass exhibiting a refractive index in the range of from 1.75 to 2.0, 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.Type: ApplicationFiled: June 29, 2001Publication date: April 11, 2002Inventors: Xuelu Zou, Hiromasa Tawarayama, Kazutaka Hayashi, Hiroshi Kawazoe