And Boron Patents (Class 501/77)
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Patent number: 8187986Abstract: The invention provides a novel optical glass which has a refractive index (nd) of 1.78 to 2.2 and an Abbe value (?d) of 16 to less than 40 and is suitable for precision mold press molding by virtue of its having a low glass transition temperature, namely, an optical glass which contains by mole in terms of oxides 25 to 60% B2O3, 2 to 45% (in total) TiO2 and Nb2O5 and 1 to 25% WO3 and has a refractive index (nd) of 1.78 to 2.2 and an Abbe value (?d) of 16 to less than 40. Further, the glass contains 5 to 35% La2O3 and 1 to 40% ZnO and has a glass transition temperature (Tg) of 700° C. or below. The optical glass is excellent in meltability, stability and devitrification resistance and has a high refractive index, high light-dispersive power and excellent precision press moldability.Type: GrantFiled: October 3, 2007Date of Patent: May 29, 2012Assignee: Ohara Inc.Inventor: Jie Fu
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Patent number: 8168553Abstract: The lead- and arsenic-free optical glass has a refractive index nd of 1.55?nd?1.64, an Abbe number ?d of 42??d?65, and a low transition temperature Tg?460° C., good producibility and processability, and crystallization stability. The optical glass has a composition within the following range, in wt. % based on oxide content: P2O5 40-58 ZnO 20-34 Li2O 0.5-5?? GeO2 0.1-11. The glass may also have a total content of SiO2, B2O3 and Al2O3 that is less than 9 wt. %. The glass may contain MgO, SrO, CaO and BaO, but the sum of these oxides is preferably at least 2 wt. % and at most 12 wt. %. The glass may contain at most 5 wt. % of each of La2O3, TiO2, Nb2O5, at most 2 wt. % Ta2O5 and less than 1 wt. % fluorine.Type: GrantFiled: February 25, 2010Date of Patent: May 1, 2012Assignee: Schott AGInventors: Silke Wolff, Stefanie Hansen, Ute Woelfel
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Publication number: 20120065051Abstract: The invention provides an optical glass for press molding which can satisfy all of the following requirements: (1) it contains no environmentally undesirable components; (2) it can easily achieve a low glass transition point; (3) it has a high refractive index and high dispersion; (4) it can easily provide a glass having an excellent visible light transmittance; and (5) it has excellent resistance to devitrification during preparation of a preform. The optical glass for press molding has a refractive index nd of 1.925 or more, an Abbe's number ?d of 10 to 30, and a glass composition, in % by mass, of 20 to 80% Bi2O3, 10 to 30% B2O3, and 0 to 5.5% GeO2 and is substantially free of lead component, arsenic component, and F component.Type: ApplicationFiled: June 14, 2010Publication date: March 15, 2012Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Takahiro Matano, Fumio Sato, Yoko Usui
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Patent number: 8129622Abstract: A hermetically sealed microelectromechanical system (MEMS) package for an implantable medical device is presented. The MEMS comprises a first substrate that includes an aperture. A feedthrough assembly is coupled to the aperture; the feedthrough assembly comprises a conductive element housed in a glass insulating member. A second substrate is coupled to the first substrate.Type: GrantFiled: May 21, 2009Date of Patent: March 6, 2012Assignee: Medtronic, Inc.Inventors: William John Taylor, Brad C. Tischendorf
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Patent number: 8115044Abstract: The present invention provides processes to immobilize high alkaline radioactive and/or hazardous waste in a silicate-based glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides silicate-based glass compositions for use in immobilizing radioactive and/or hazardous waste.Type: GrantFiled: March 20, 2007Date of Patent: February 14, 2012Assignee: GeoMatrix Solutions, Inc.Inventors: Anatoly Chekhmir, Arthur Gribetz
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Publication number: 20120035043Abstract: To provide a cover glass for a solid-state imaging element package, which is useful for air-tight sealing of a resin package and which has a strength not to undergo breakage even when subjected to external force. A cover glass for a solid-state imaging element package, which comprises, by mole percentage, P2O5: 15 to 40%, Al2O3: 15 to 30%, SiO2: 0 to 15%, B2O3: 0 to 20%, Li2O: 0 to 15%, Na2O: 0 to 25%, K2O: 0 to 25%, provided that Li2O+Na2O+K2O: 15 to 40%, and MgO+CaO+SrO+ZnO: 1 to 35%.Type: ApplicationFiled: October 19, 2011Publication date: February 9, 2012Applicant: Asahi Glass Company, LimitedInventor: Hidetoshi SUZUKI
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Publication number: 20120033693Abstract: The invention relates to aluminoborosilicate-based glasses suitable for use as a solid laser medium. In particular, these aluminoborosilicate-based laser glasses exhibit broad emission bandwidths of rare earth lasing ions. Although not entirely understood, the broadening of the emission bandwidth is believed to be achieved by the presence of significant amounts of lanthanide ions in the glass matrix. In addition, because of the high values of Young's modulus, fracture toughness and hardness, the rare earth aluminoborosilicate glass system according to the invention is also suitable as transparent armor window material.Type: ApplicationFiled: August 5, 2010Publication date: February 9, 2012Applicant: SCHOTT NORTH AMERICAInventors: Hong LI, Carsten WEINHOLD
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Patent number: 8110515Abstract: A glass composition that simultaneously has a low temperature coefficient of refractive index and a good light transmittance, being suitable for use in environments of intense temperature change. There is provided an optical glass containing SiO2, B2O3 and La2O3, which has a temperature coefficient (20° to 40° C.) of relative refractive index (546.07 nm) of 10.0×10?6 (° C.?1) or below. Further, there is provided an optical glass mentioned above having a temperature coefficient (20° to 40° C.) of relative refractive index (546.07 nm) of 4.6×10?6 (° C.?1) or below. Still further, there is provided an optical glass mentioned above having an internal transmittance (?;10 mm) at 400 nm of 80% or higher.Type: GrantFiled: September 8, 2006Date of Patent: February 7, 2012Assignee: Ohara, Inc.Inventor: Koji Shimizu
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Patent number: 8088700Abstract: The present invention relates to a sealing glass composition for an intermediate-temperature planar SOFC, and a composition herein comprises a mixture of BaO, Al2O3, B2O3 and SiO2 in a particular mixing ratio and a metal oxide such as CeO2, Fe2O3, Mn2O3 and Cr2O3, thereby enabling the SOFC to efficiently operate at an intermediate temperature. The composition for a planar SOFC satisfies thermal properties, mechanical properties and electric properties that are required as a sealing glass for an intermediate-temperature SOFC, and also prevents the mixing between fuel gas and air, thereby being useful for the commercialization of SOFCs.Type: GrantFiled: April 27, 2009Date of Patent: January 3, 2012Assignee: Hyundai Motor CompanyInventor: Byong Soo Kim
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Publication number: 20110303883Abstract: A glass composition for electrode formation includes, as a glass composition expressed in terms of oxides by mass %, 60 to 90% of Bi2O3, 2 to 25% of B2O3, 0 to 25% of ZnO, 0.01 to 20% of MgO+CaO+SrO+BaO, and 0 to 25% of SiO2.Type: ApplicationFiled: February 23, 2010Publication date: December 15, 2011Inventor: Kentaro Ishihara
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Publication number: 20110289970Abstract: Preforms for precision press molding made of optical glass, optical elements, and methods of manufacturing the same are provided. The preforms are suited to precision press molding having a broad range of dispersion characteristics, a low glass transition temperature, a low sag point, and good resistance to devitrification while containing no PbO. The optical element is obtained by precision press molding the preform. One example of the preform has a refractive index (nd) of greater than or equal to 1.7 and an Abbé number (?d) of less than or equal to 32. The other example of the preform has an Abbé number (?d) exceeding 32.Type: ApplicationFiled: June 28, 2011Publication date: December 1, 2011Applicant: HOYA CORPORATIONInventors: Xuelu Zou, Yoshiko Kasuga, Yasuhiro Fujiwara
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Patent number: 8058196Abstract: The present invention provides optical glasses containing Bi2O3 in which the optical glasses have at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body during reheating steps in production processes, superior chemical durability, and free from black coloring. The optical glass has a refractive index (nd) of no less than 1.75 and an Abbe number (?d) of no less than 10 as optical constants. The optical glass contains Bi2O3 in a content from no less than 10% by weight to less than 90% by weight, and has at least one of the properties of being substantially free from opacification and being substantially devitrified within the glass body under the conditions of a reheating test (a).Type: GrantFiled: September 1, 2006Date of Patent: November 15, 2011Assignee: Ohara Inc.Inventors: Atsushi Nagaoka, Jie Fu, Michiko Ogino
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Publication number: 20110269617Abstract: An optical glass having optical constants of a refractive index (nd) of 1.78 or over, an Abbe number (?d) of 30 or below, and a partial dispersion ratio (?g, F) of 0.620 or below comprises SiO2 and Nb2O5 as essential components, wherein an amount of Nb2O5 in mass % is more than 40%. The optical glass further comprising, in mass % on oxide basis, less than 2% of K2O and one or more oxides selected from the group consisting of B2O3, TiO2, ZrO2, WO3, ZnO, SrO, Li2O and Na2O wherein a total amount of SiO2, B2O3, TiO2, ZrO2, Nb2O5, WO3, ZnO, SrO, Li2O and Na2O is more than 90% and TiO2/(ZrO2+Nb2O5) is less than 0.32.Type: ApplicationFiled: July 12, 2011Publication date: November 3, 2011Applicant: OHARA INC.Inventor: Susumu Uehara
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Patent number: 8048816Abstract: The invention relates to opaque, colored glass-ceramic articles and to the production of opaque, colored glass-ceramic articles which can be readily formed to a desired shape using standard metal-working tools. The glass-ceramic material used to make such articles contains mica crystals as the predominant phase. The desired color is obtained through the addition of a colorant system to the precursor glass. In a particular embodiment the invention is directed to a black glass-ceramic article, the black color being obtained by the addition of iron oxides in levels as high as 20 wt %, which can yield a glass-ceramic having an iron-rice mica phase and/or a glass ceramic having an iron-rich mica phase plus an iron oxide phase.Type: GrantFiled: April 20, 2009Date of Patent: November 1, 2011Assignee: Corning IncorporatedInventors: George Halsey Beall, Linda Ruth Pinckney, Steven Alvin Tietje
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Patent number: 8043986Abstract: A sealing glass for an energy storage device is provided. The sealing glass includes silicon dioxide, boron oxide, aluminum oxide, sodium oxide and zirconium oxide. Methods for preparing the sealing glass and the energy storage device incorporating the sealing glass are also provided.Type: GrantFiled: November 13, 2008Date of Patent: October 25, 2011Assignee: General Electric CompanyInventors: Dong-Sil Park, Jian Wu, Mamatha Nagesh, Sundeep Kumar, Craig Stringer, Digamber Porob, Vinayak Hassan Vishwanath
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Publication number: 20110245063Abstract: The present invention relates to an optical glass, a preform for precision press molding, methods for manufacturing the same, and an image pickup device. The optical glass of the present invention not only has a high refractive index, a high dispersion property, and good precision press moldability, but also has good stability with respect to devitrification when reheated (referred to as “devitrification stability upon reheating”), and is an optical glass with a good partial dispersion ratio (Pg, F).Type: ApplicationFiled: March 28, 2011Publication date: October 6, 2011Applicant: HOYA CORPORATIONInventor: Hiroki TAKAZAWA
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Patent number: 8030233Abstract: An optical glass having optical constants of a refractive index (nd) of 1.78 or over, an Abbe number (?d) of 30 or below, and a partial dispersion ratio (?g, F) of 0.620 or below comprises SiO2 and Nb2O5 as essential components, wherein an amount of Nb2O5 in mass % is more than 40%. The optical glass further comprising, in mass % on oxide basis, less than 2% of K2O and one or more oxides selected from the group consisting of B2O3, TiO2, ZrO2, WO3, ZnO, SrO, Li2O and Na2O wherein a total amount of SiO2, B2O3, TiO2, ZrO2, Nb2O5, WO3, ZnO, SrO, Li2O and Na2O is more than 90% and TiO2/(ZrO2+Nb2O5) is less than 0.32.Type: GrantFiled: January 9, 2009Date of Patent: October 4, 2011Assignee: Ohara Inc.Inventor: Susumu Uehara
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Patent number: 8012896Abstract: The present invention relates to an optical glass having optical constants in the form of a refractive index nd of 1.70 or higher and an Abbé number nud of 50 or higher, a preform for precision press molding comprised of this glass, an optical element comprised of this glass, and methods for manufacturing the preform and the optical element.Type: GrantFiled: September 26, 2008Date of Patent: September 6, 2011Assignee: Hoya CorporationInventor: Yasuhiro Fujiwara
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Patent number: 8003556Abstract: There is provided an optical glass with a high refractive index and a low dispersion having a refractive index (nd) of not less than 1.75 and an Abbe's number (?d) of not less than 35 where the image formation characteristic is hardly affected by changes in temperature of the using environment. SiO2, B2O3 and La2O3 are contained as essential components and the ratio of the constituting components are adjusted whereby an optical glass in which a product of ? and ? where ? is an average linear expansion coefficient at ?30 to +70° C. and ? is an optical elasticity constant at the wavelength of 546.1 nm is not more than 130×10?12° C.?1×nm×cm?1×Pa?1 is able to be achieved.Type: GrantFiled: April 10, 2008Date of Patent: August 23, 2011Assignee: Ohara Inc.Inventors: Junko Suzuki, Michiko Ogino, Masahiro Onozawa
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Patent number: 8003217Abstract: Disclosed herein is a ceramic comprising: at least two different metal oxides, the at least two different metal oxides comprising TiO2 and La2O3 or TiO2 and BaO; less than 20% by weight SiO2; less than 20% by weight B2O3; and less than 40% by weight P2O5; the ceramic having a glass transition temperature, Tg, and a crystallization onset temperature, Tx, and the difference between Tg and Tx is at least 5K. The ceramic may comprise additional metal oxides. Also disclosed herein is a method of making an article using the ceramic; typically, the ceramic is heated above the Tg, shaped, and then cooled.Type: GrantFiled: January 15, 2007Date of Patent: August 23, 2011Assignee: 3M Innovative Properties CompanyInventor: Anatoly Z. Rosenflanz
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Patent number: 7998891Abstract: Optical glass having a refractive index (nd) of 1.85 or greater, and an Abbe number (?d) falling within the range of 10 to 30, which is suited for molding by precision mold press is provided. The optical glass is characterized by including B2O3+SiO2 in an amount of 3 to 60%, Bi2O3 in an amount of 25 to 80%, RO+Rn2O in an amount of 5 to 60% (wherein R represents one or more selected from a group consisting of Zn, Ba, Sr, Ca, and Mg; and Rn represents one or more selected from a group consisting of Li, Na, K, and Cs), with each component in the range expressed in oxide-based mole percentage, and is characterized in that transparency in the visible region is high, and that the transition point (Tg) is 480° C. or lower. The optical glass is characterized by having a spectral transmittance of 70% or greater at a wavelength of 600 nm for a thickness of 10 mm.Type: GrantFiled: April 27, 2006Date of Patent: August 16, 2011Assignee: Ohara Inc.Inventor: Jie Fu
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Patent number: 7977264Abstract: The optical glasses designated to be used in the areas of imaging, sensors, microscopy, medical technology, digital projection, photolithography, laser technology, wafer/chip technology as well as telecommunications, optical communications engineering and optics/illumination in the automotive sector with a refractive index nd of 1.60?nd?1.72 and/or an Abbe number vd of 32?vd?45 and with a Tg of 567° C. to 640° C., pronounced short flint character, good chemical resistance, excellent resistance to crystallization, good solarization stability and the following composition (in % by weight based on oxides): SiO2 30-45 B2O3 ?8-12 Na2O ?8-15 CaO 0.1-7?? ZnO 0 ? 5 ZrO2 10-20 Nb2O5 12-24 Ta2O5 0 ? 9 AgO ?0 ? 5.Type: GrantFiled: May 29, 2008Date of Patent: July 12, 2011Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel, Gordon Kissl
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Publication number: 20110160032Abstract: An object of the present invention is to provide optical glass having improved glass-devitrification resistance and moldability without causing reduction in refractive index, and also provide an optical element using the optical glass as a raw material. Specifically, the present invention provides an optical glass containing components of, by mol %: B2O3: over 60% through 75%; Bi2O3: 24% to 39%; La2O3: 7% or lower; Gd2O3: 7% or lower; and ZrO2: 7% or lower.Type: ApplicationFiled: December 22, 2010Publication date: June 30, 2011Inventor: Yoshinori Yamamoto
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Patent number: 7964523Abstract: A powder composition for forming a highly expansible crystallized glass substantially free of alkali metals is disclosed, which composition can provide, through its firing at a temperature of not more than 900° C., a seal between metal and ceramic. The powder composition is a powder composition for the formation of a sealing crystallized glass which is substantially free of alkali metals and consists of the powder of a glass containing, calculated as oxides, SiO2: 10-30% by mass, B2O3: 20-30% by mass, CaO: 10-40% by mass, MgO: 15-40% by mass, BaO+SrO+ZnO: 0-10% by mass, La2O3: 0-5% by mass, Al2O3: 0-5% by mass, and RO2: 0-3% by mass (wherein R represents Zr, Ti, or Sn), wherein the crystallized glass that is formed by firing the powder composition at 900±50° C. has a coefficient of thermal expansion of 90-120×10?7/° C. at 50-550 ° C.Type: GrantFiled: June 19, 2008Date of Patent: June 21, 2011Assignee: Nihon Yamamura Glass Co., Ltd.Inventors: Yoshitaka Mayumi, Hideyuki Kuribayashi
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Publication number: 20110135931Abstract: Provided is a glass composition for electrode formation including, as a glass composition expressed in terms of oxides by mass %, 73.1 to 90% of Bi2O3, 2 to 14.5% of B2O3, 0 to 25% of ZnO, 0.2 to 20% of MgO+CaO+SrO+BaO (total content of MgO, CaO, SrO, and BaO) , and 0 to 8.5% of SiO2+Al2O3 (total content of SiO2 and Al2O3).Type: ApplicationFiled: September 1, 2009Publication date: June 9, 2011Inventor: Kentaro Ishihara
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Patent number: 7951733Abstract: The present invention provides a blue-violet light blocking glass containing copper (I) halide fine particles that satisfactorily transmits light having a wavelength of 450 nm to 600 nm and sharply blocks light having a wavelength shorter than 450 nm. Specifically, the present invention provides a blue-violet light blocking glass containing a copper (I) halide and silver; for example, 20 to 85% by weight of SiO2; 2 to 75% by weight of B2O3; not more than 10% by weight of Al2O3; 2 to 30% by weight of at least one member selected from the group consisting of Li2O, Na2O, K2O, Rb2O and Cs2O; 1 to 15% by weight of at least one member selected from the group consisting of MgO, CaO, SrO, BaO and ZnO; not more than 10% by weight of at least one member selected from the group consisting of PbO, Nb2O5, ZrO2, La2O3, Y2O3, Ta2O3 and Gd2O3; not more than 5% by weight of at least one member selected from the group consisting of Sb2O3 and As2O3; not more than 5% by weight of SnO2; 0.Type: GrantFiled: November 15, 2006Date of Patent: May 31, 2011Assignees: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Naoto Yamashita, Kazuhisa Kimura, Tatsuya Suetsugu, Toshihiko Einishi, Kohei Kadono
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Publication number: 20110124485Abstract: A glass composition being suitable for precision mold press forming, having superior resistance to devitrification, having optical constants (a refractive index, an Abbe number, and the like) required for aspherical lenses, and a low glass transition temperature. There is provided an optical glass comprising 5 mol % to 60 mol % of a B2O3 component, and 0.2 mol % to 60 mol % of a TeO2 component, by mol % on the basis of oxides. Further, there is provided an optical glass mentioned above having optical constants with a refractive index (nd) of 1.80 to 2.20, and an Abbe number (?d) of 16 to 40. Still further, there is provided an optical glass mentioned above having a glass transition temperature (Tg) of no more than 680° C.Type: ApplicationFiled: January 19, 2011Publication date: May 26, 2011Applicant: OHARA INC.Inventor: Jie FU
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Patent number: 7947617Abstract: To provide a high-refractivity high-dispersion optical glass having excellent stability An optical glass which is formed of an oxide glass containing 30 to 70 cationic % of Bi3+ and has a liquidus temperature of 800° C. or lower.Type: GrantFiled: August 5, 2008Date of Patent: May 24, 2011Assignee: Hoya CorporationInventors: Xuelu Zou, Yasuhiro Fujiwara, Yoshio Nojima
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Patent number: 7947618Abstract: An optical glass contains, based on a total weight of the optical glass: 12 to 30 weight percent of P2O5; 1 to 5 weight percent of B2O3; 1 to 8 weight percent of Li2O; 0.5 to weight percent of Na2O; 0.5 to 15 weight percent of K2O; 1 to 5 weight percent of CaO; 0 to 20 weight percent of BaO; 0 to 5 weight percent of SrO; 1 to 10 weight percent of TiO2; 1 to 20 weight percent of Bi2O3; 3 to 35 weight percent of Nb2O5; 13 to 60 weight percent of WO3; and 0 to 1 weight percent of Sb2O3, wherein a total weight of Na2O and K2O is in a range of 3 to 20 weight percent based on the total weight of the optical glass.Type: GrantFiled: September 9, 2008Date of Patent: May 24, 2011Assignee: Onica Minolta Opto, Inc.Inventor: Manabu Izuki
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Patent number: 7943060Abstract: The invention is directed to a process for making screen-printable getter composition comprising: (a) glass frit; and (b) pre-hydrated desiccant material; dispersed in (c) organic medium. The desiccant material is pre-hydrated to reach its saturation level of moisture absorption. The process of pre-hydration can be done by exposing the desiccant in a normal temperature/humidity environment of for example, 25° C. and 50-60% RH. For 24 to 48 hours or up to the time when weight gain (due to moisture absorption) stops increasing. An accelerated hydration process in a chamber with higher than normal humidity level (i.e. 50% Relative Humidity) is also applicable to shorten the time of exposure to fully hydrate the desiccant material.Type: GrantFiled: January 29, 2010Date of Patent: May 17, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Carl B. Wang, Christopher John Roach, Fong-Pei Chang
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Patent number: 7943059Abstract: The invention is directed to a screen-printable getter composition comprising: (a) glass frit; dispersed in (b) organic medium. The invention is further directed to a screen-printable thick film getter composition comprising: (a) glass frit; and (b) desiccant material; dispersed in (c) organic medium. The present invention further relates to a getter composition utilizing low-softening temperature glasses comprising, based on weight %, 1-50% SiO2, 0-80% B2O3, 0-90% Bi2O3, 0-90% PbO, 0-90% P2O5, 0-60% Li2O, 0-30% Al2O3, 0-10% K2O, 0-10% Na2O, and 0-30% MO where M is selected from Ba, Sr, Ca, Zn, Cu, Mg and mixtures thereof. The glasses described herein may contain several other oxide constituents that can substitute glass network-forming elements or modify glass structure.Type: GrantFiled: December 29, 2009Date of Patent: May 17, 2011Assignee: E. I. Du Pont de Nemours and CompanyInventors: Yong Cho, Terri Cardellino, James Daniel Tremel
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Patent number: 7910507Abstract: There is provided a glass ceramic material for plasma display, in which glass fine grains (A) having a softening point of 570-640° C. are in 40-70 wt %, and glass fine grains (B) having a softening point of 480-540° C. are in 30-60 wt %, the glass ceramic material for plasma display being characterized in that the glass fine grains (A) comprise 2-12 wt % of SiO2, 50-58 wt % of B2O3, 10-20 wt % of Al2O3, 0-6 wt % of ZnO, 0-2.8 wt % of Li2O, and 10-22 wt % of at least one selected from MgO, CaO, SrO and BaO and that refractive index of the glass fine grains (A) is 1.53-1.56.Type: GrantFiled: December 20, 2007Date of Patent: March 22, 2011Assignee: Central Glass Company, LimitedInventors: Kazuhiro Nishikawa, Koji Tominaga
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Patent number: 7897531Abstract: Glass has optical constants of a refractive index (nd) of 1.79 or over and an Abbe number (?d) of 27 or over and a specific gravity (D) of 3.20 or over and is free from devitrification in the interior of the glass in a reheat test. The glass has chemical durability according to the Powder Method (acid-proof property RA according to the Powder Method) which is Class 1.Type: GrantFiled: January 12, 2006Date of Patent: March 1, 2011Assignee: Kabushiki Kaisha OharaInventor: Junko Ishioka
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Patent number: 7897533Abstract: An optical glass composition contains, in % by mole, 14.0% or more and 31.0% or less of SiO2, 19.0% or more and 40.0% or less of B2O3, 0% or more and 5.0% or less of Li2O, 0% or more and 12.0% or less of ZnO, 0% or more and 12.0% or less of ZrO2, 15.0% or more and 26.0% or less of La2O3, 22.0% or more and 38.0% or less of La2O3+ZrO2, 2.0% or more and 5.0% or less of Ta2O5 and 4.0% or more and 16.0% or less of Gd2O3, and has nd of 1.83 or higher and 1.87 or lower and ?d of 43 or higher and 47 or lower, and a preform and an optical element are formed from the optical glass composition.Type: GrantFiled: May 1, 2008Date of Patent: March 1, 2011Assignee: Panasonic CorporationInventors: Minoru Onoda, Kazuhiko Ishimaru, Shoji Nakamura
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Patent number: 7897532Abstract: An optical glass composition contains, in % by weight, 1.0% or more and 12.0% or less of SiO2, 8.0% or more and 18.0% or less of B2O3, 0% or more and 6.0% or less of ZnO, 1.0% or more and 10.0% or less of ZrO2, 25.0% or more and 47.0% or less of La2O3, 0% or more and 5.0% or less of R2O (here, R is at least one of Li, Na and K), 0% or more and 15.0% or less of Nb2O5, 0% or more and 7.0% or less of TiO2, 0% or more and 15.0% or less of Ta2O5, 1.0% or more of Nb2O5+TiO2+Ta2O5, 0% or more and 25.5% or less of Gd2O3, 0.5% or more and 15.0% or less of WO3 and 0.5% or more and 26.0% or less of Gd2O3+WO3, and has nd of 1.88 or higher and 1.92 or lower and ?d of 33 or higher and 37 or lower, and a preform and an optical element are formed from the optical glass composition.Type: GrantFiled: April 21, 2008Date of Patent: March 1, 2011Assignee: Panasonic CorproationInventors: Minoru Onoda, Kazuhiko Ishimaru, Shoji Nakamura
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Publication number: 20110034314Abstract: An optical glass has a refractive index (nd) of 1.60 or over and excellent transmittance and internal quality. The optical glass comprises 0.1-4 mass % of Ta2O5 to total mass of glass calculated on oxide basis, has ratio of 0.95<Ta2O5/(Ta2O5+(ZrO2)+TiO2+Nb2O5+WO3)×5)?1.00, and further comprises SiO2+B2O3+Al2O3+BaO in a total amount of 81% or over.Type: ApplicationFiled: August 2, 2010Publication date: February 10, 2011Applicant: KABUSHIKI KAISHA OHARAInventor: Michiko Ogino
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Patent number: 7884040Abstract: Optical glass has a refractive index of 1.83 or above and an Abbe number of 26 or less and contains SiO2, TiO2, Nb2O5 and Na2O as its essential constituents in such proportions on a final oxide basis that the amounts of its oxide constituents as expressed on a mass percentage basis may satisfy the relationship: (TiO2+Nb2O5)/(Na2O+K2O)=3.0 to 4.0.Type: GrantFiled: March 13, 2008Date of Patent: February 8, 2011Assignee: Ohara Inc.Inventors: Hiroaki Tomoe, Masahiro Onozawa
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Publication number: 20110015053Abstract: A lead-free low-melting-point glass having an acid resistance, being substantially free of PbO and including 12 to 35 mass % of SiO2, 3 to 20 mass % of B2O3, 35 to 75 mass % of Bi2O3, and 0 to 8 mass % of at least one material selected from the group consisting of Li2O, Na2O and K2O is provided. A lead-free low-melting-point glass composition including a powder of the glass and a filler made of a ceramic powder is also provided.Type: ApplicationFiled: March 4, 2009Publication date: January 20, 2011Applicant: CENTRAL GLASS COMPANY LIMITEDInventors: Jun Hamada, Koji Tominaga, Naoya Hayakawa
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Publication number: 20110009511Abstract: The present invention relates to glass compositions for use in formation of polycarboxylate cements and polycarboxylate cements comprising these glasses, wherein the glasses comprise SiO2 and MgO, with a molar percentage of SiO2 not exceeding 60% and a molar percentage of MgO being greater than 20%.Type: ApplicationFiled: July 2, 2008Publication date: January 13, 2011Applicant: IMPERIAL INNOVATIONS LIMITEDInventors: Robert Graham Hill, Molly Morag Stevens
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Patent number: 7867934Abstract: Optical glass containing bismuth oxide having good defoamability. The Optical glass contains, as % by mass, from 10 to less than 90% of a Bi2O3 component and at least 0.1% of a TeO2 and/or SeO2 component. The optical glass is on Grade 4 to Grade 1 in “JOGIS12-1994, Method for Measuring Bubbles in Optical Glass”. By controlling the amount of RO component (R is at least one selected from a group consisting of Zn, Ba, Sr, Ca, Mg) and Rn2O component (Rn?Li, Na, K, Cs), the clarifying time may be shortened.Type: GrantFiled: October 22, 2007Date of Patent: January 11, 2011Assignee: Ohara, Inc.Inventor: Atsushi Nagaoka
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Publication number: 20100331164Abstract: Sealing materials for use with membrane supports, and in particular to sealing materials that can be used to form a glassy coating on the exterior surface of a membrane support to prevent gases from entering or exiting the support via the support's exterior walls.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Inventors: Lisa Ann Lamberson, Robert Michael Morena
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Publication number: 20100317507Abstract: An optical glass comprising, by mass %, 12 to 40% of SiO2, 15% or more but less than 42% of Nb2O5, 2% or more but less than 18% of TiO2, (provided that Nb2O5/TiO2 is over 0.6), 0.1 to 20% of Li2O, 0.1 to 15% of Na2O, and 0.1 to 25% of K2O, and having an Abbe's number ?d of 20 to 30, a ?Pg,F of 0.016 or less and a liquidus temperature of 1,200° C. or lower.Type: ApplicationFiled: January 22, 2009Publication date: December 16, 2010Applicant: HOYA CORPORATIONInventors: Xuelu Zou, Yoshio Nojima, Hiroki Takazawa
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Patent number: 7846858Abstract: The invention concerns a glaze for annealing surfaces, particularly of ceramic parts used in the field of medicine, comprising the components 30 to 55% SiO2, 0 to 7% Al2O3, 10 to 30% R2O, 5 to 10% R?O, 0.5 to 15% B2O3, 5 to 10% Bi2O3, 1 to 10% P2O5, 0 to 5% Sb2O3, 0 to 5% SnO2, 0 to 5% TiO2 and 5 to 10% ZrO2 by mass, wherein (R) is one or several alkali metals and (R?) is one or several bivalent metals from the group comprising alkaline earth metals and zinc, and wherein the glaze is obtained by melting or sintering the components.Type: GrantFiled: September 11, 2008Date of Patent: December 7, 2010Assignee: Denseo GmbHInventor: Ismail Yilmaz
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Publication number: 20100298111Abstract: An optical glass has a composition including: 40 to 65 mass % of P2O5, and 0 to less than 5 mass % of Li2O+Na2O+K2O. In the optical glass, (MgO+CaO)/(Li2O+Na2O+K2O) which is a ratio of the total content expressed in mass % of MgO and CaO to the total content expressed in mass % of Li2O, Na2O, and K2O, is in a range from 6 to 38.Type: ApplicationFiled: May 19, 2010Publication date: November 25, 2010Inventor: Akio Oogaki
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Patent number: 7827823Abstract: An optical glass having high refractivity and a low sag temperature and having a low-temperature softening property that enables precision press-molding is provided, and the optical glass contains, by mol %, 5 to 50% of B2O3, 3 to 50% of SiO2, 5 to 40% of TiO2, 1 to 40% of ZnO, 5 to 20% of La2O3, 0 to 10% of Gd2O3, 0 to 15% of Nb2O5, 0 to 10% of ZrO2, 0 to 5% of Ta2O5, 0 to 10% of Bi2O3, 0 to 10% of MgO, 0 to 8% of CaO, 0 to 10% of SrO, 0 to 10% of BaO, provided that the total content of MgO, CaO, SrO and BaO is 15% or less, 0 to 20% of Li2O, and 0 to 5% of Na2O, optionally containing Sb2O3 as a refining agent, and having a refractive index (nd) of 1.8 or more and an Abbe's number (?d) of 35 or less.Type: GrantFiled: June 23, 2009Date of Patent: November 9, 2010Assignee: Hoya CorporationInventors: Yoshiko Kasuga, Xuelu Zou
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Patent number: 7825288Abstract: The present invention provides processes to immobilize radioactive and/or hazardous waste in a borosilicate glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides borosilicate glass compositions for use in immobilizing radioactive and/or hazardous waste.Type: GrantFiled: June 22, 2009Date of Patent: November 2, 2010Assignee: GeoMatrix Solutions, Inc.Inventors: Anatoly Chekhmir, Arthur Gribetz
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Patent number: 7795165Abstract: An object of the present invention is to provide a lead-free bismuth glass wherein decrease of the degree of accuracy of the patterning is prevented. Specifically, the present invention provides a lead-free bismuth glass characterized in that said lead-free bismuth glass is used for an optical patterning glass material which is patterned by light irradiation and the optical-absorption coefficient to light with a wavelength of 365 nm is 300 to 3000 cm?1.Type: GrantFiled: May 26, 2006Date of Patent: September 14, 2010Assignees: E.I. du Pont de Nemours and CompanyInventors: Ichiro Uchiyama, Tomoyuki Taguchi, Ikuo Kuriyama, Hisashi Matsuno, Keiichiro Hayakawa
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Patent number: 7749929Abstract: Glass for covering electrodes, which consists essentially of, as represented by mol % based on the following oxides, from 25 to 60% of B2O3, from 0 to 18% of SiO2, from 0 to 60% of ZnO, from 0 to 18% of BaO, from 3 to 15% of Bi2O3 and from 0 to 10% of Al2O3, and contains no PbO.Type: GrantFiled: September 29, 2006Date of Patent: July 6, 2010Assignee: Asahi Glass Company, LimitedInventors: Masamichi Tanida, Tomoyuki Fukahori
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Patent number: 7745361Abstract: The present invention relates to an optical glass having a refractive index (nd) of greater than or equal to 1.65 and an Abbé number (? (nu)d) of greater than or equal to 50 for use in precision press molding. The glass exhibits that a ratio ? (alpha)1/? (alpha)2 is less than 17 when temperature denoting maximum value of differential in amount of elongation of glass relative to temperature differential DELTAT (where DELTAT denotes a constant value of 1° C. or less) over a temperature range from glass transition temperature (Tg) to sag temperature (Ts) is denoted as T1, average coefficient of linear expansion over a range from T1?5° C. to T1+5° C. is denoted as alpha1, and average coefficient of linear expansion over a range from the glass transition temperature (Tg)?160° C. to the glass transition temperature (Tg)?140° C. is denoted as alpha2.Type: GrantFiled: March 20, 2007Date of Patent: June 29, 2010Assignee: Hoya CorporationInventors: Yoshiko Kasuga, Yasuhiro Fujiwara, Xuelu Zou
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Patent number: 7737063Abstract: Al2O3-rare earth oxide-ZrO2/HfO2 ceramics (including glasses, crystalline ceramics, and glass-ceramics) and methods of making the same. Ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. The particles and fibers are useful, for example, as thermal insulation, filler, or reinforcing material in composites (e.g., ceramic, metal, or polymeric matrix composites). The thin coatings can be useful, for example, as protective coatings in applications involving wear, as well as for thermal management. Certain ceramic particles according to the present invention can be are particularly useful as abrasive particles.Type: GrantFiled: June 26, 2007Date of Patent: June 15, 2010Assignee: 3M Innovative Properties CompanyInventor: Anatoly Z. Rosenflanz