And Zinc Patents (Class 501/76)
  • Publication number: 20090163343
    Abstract: 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: Application
    Filed: November 15, 2006
    Publication date: June 25, 2009
    Applicants: ISUZU GLASS CO., LTD., NATIONAL INSTITUTE ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Naoto Yamashita, Kazuhisa Kimura, Tatsuya Suetsugu, Toshihiko Einishi, Kohei Kadono
  • Publication number: 20080207427
    Abstract: 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: Application
    Filed: April 28, 2008
    Publication date: August 28, 2008
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki Ohkawa, Naoki Sugimoto
  • Patent number: 7247987
    Abstract: Disclosed is a rear plate of a plasma display panel. In the rear plate, a dielectric layer or a barrier wall layer is formed by forming slurry in a tape of a green tape and then attaching the green tape to upper surfaces of electrodes and a glass substrate. Therefore, a PDP employing a rear plate according to the present invention has superior electric and optical characteristics.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: July 24, 2007
    Assignee: LG Micron Ltd.
    Inventor: Jae-Chil Seo
  • Patent number: 7040121
    Abstract: Disclosed is a method for sealing and affixing a component assembly for an electrical lighting device to a glass lamp envelope. The assembly used in the process comprises the component, such as an electrode lead wire and a solder glass perform. The process is useful, for example, in hermetically sealing and affixing lamp components, such as electrical lead wires and exhaust tubulation, to a low pressure fluorescent discharge lamp envelope having phosphor coating already applied thereto. The present invention is particularly suitable for lamp envelope made of borosilicate glass having a CTE from 0 to 300° C. in the range of 30–45×10?7° C.?1.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 9, 2006
    Assignee: Corning Incorporated
    Inventors: Joseph E. Canale, Stephen L. Cooch, William L. Haynes, Clayton L. Tuttle, II
  • Patent number: 6984261
    Abstract: The invention relates to uses of glasses and glass-ceramics in dental and orthodontic applications.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: January 10, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Cummings, Jacqueline C. Rolf, Anatoly Z. Rosenflanz, Richard P. Rusin, Jerome E. Swanson
  • Patent number: 6976372
    Abstract: Disclosed is a process for sealing component assembly to an electrical lighting device using induction healing. The assembly comprises the component, such as an electrode lead wire, and a solder glass perform. The process is useful, for example, in hermetically sealing and affixing lamp components, such as electrical lead wires and exhaust tubulation, to a low-pressure fluorescent discharge lamp envelope having phosphor coating already applied thereto without causing to damage other lamp components sensitive to high temperature. The present invention is particularly suitable for lamp envelopes made of borosilicate glass having a CTE form 0 to 300° C. in the range of 30–45×10?7° C.?1.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: December 20, 2005
    Assignee: Corning Incorporated
    Inventors: Timothy J. Cooper, Kashyap H. Shah
  • Patent number: 6911160
    Abstract: 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: Grant
    Filed: March 21, 2003
    Date of Patent: June 28, 2005
    Assignee: Kigre, Inc.
    Inventors: John D. Myers, Michael J. Myers
  • Patent number: 6873104
    Abstract: The present invention relates to a plasma display panel comprising transparent electrodes and a dielectric layer covering said transparent electrodes on at least one substrate of a pair of substrates facing each other with a discharge space therebetween, the main constituent of the transparent electrodes is included in the dielectric layer. Further, the main constituent of the transparent electrode is indium oxide and indium oxide is included in the dielectric layer. By including the main constituent of the transparent electrodes in the dielectric layer, it is believed that the drop in conductivity caused by diffusion of the dielectric substance in the transparent electrodes during high-temperature processing is prevented.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: March 29, 2005
    Assignees: Fujitsu Limited, Central Glass Company Limited
    Inventors: Noriyuki Awaji, Keiichi Betsui, Shinji Tadaki
  • Patent number: 6825140
    Abstract: A glass paste comprising an inorganic powder, wherein the powder has a refractive index of 2.0 or more, a reflective index at wavelengths of light of 400 nm, 550 nm and 700 nm in a light reflection spectrum of 80% or more, a primary particle size measured by scanning electron microscopy of from 0.1 &mgr;m to 10 &mgr;m, and a BET specific surface area of from 0.1 m2/g to 15 m2/g.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: November 30, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kunio Saegusa, Shinichiro Tanaka
  • Patent number: 6806216
    Abstract: Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number vd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-<30, ZnO+PbO 20-55, Li2O 0-<3, Na2O 0-14, K2O 0-12, Li2O+Na2O+K2O≧2, F 0-3, MgO 0-6, CaO 0-<5, SrO 0-6, BaO 0-<0.9, B2O3 0-<1, Al2O3 0-<1.5 and ZrO2 0-<2 and, if appropriate, refining agents in the customary amounts.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: October 19, 2004
    Assignee: Schott Glas
    Inventors: Ina Mitra, Danuta Grabowski, Uwe Kolberg, Paul Kissl
  • Patent number: 6784130
    Abstract: Inorganic powder as a plasma display panel material comprises a powdery material containing glass powder. The powdery material has a moisture content adjusted to fall within a range between 0.1 and 2 mass %. The powdery material may include the glass powder alone or may further comprise ceramics powder in addition to the glass powder. The inorganic powder may be used as a paste or a green sheet.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: August 31, 2004
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Yoshiro Morita, Hiroyuki Oshita, Masahiko Ouji, Kazuo Hadano
  • Patent number: 6773635
    Abstract: Materials, both glass and glass-ceramic, that exhibit UV-induced changes in light transmission and electrical conductivity behavior. The materials consist essentially, in mole %, of 20-40% SiO2, 10-20% AlO1.5, 35-55% SiO2+AlO1.5, at least 30% CdF2, 0-20% PbF2, and/or ZnF2, 0-15% rare earth metal fluoride, and 45-65% total metal fluorides.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: August 10, 2004
    Assignee: Corning Incorporated
    Inventors: Nicholas F. Borrelli, Lauren K. Cornelius, Dennis W. Smith, Paul A. Tick
  • Patent number: 6756334
    Abstract: An optical glass includes SiO2; PbO; B2O3; not less than 0.1 mass % of TeO2; and not less than 0.4 mass % of Li2O.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: June 29, 2004
    Assignee: Kabushiki Kaisha Ohara
    Inventors: Michiko Ogino, Yoshio Mori, Masahiro Onozawa, Junko Ishioka
  • Patent number: 6599851
    Abstract: A composition of a dielectric for a plasma display panel in use for fabricating a barrier rib having a low sintering temperature, a low coefficient of thermal expansion, a low dielectric constant and a high withstand voltage. The composition of a dielectric for a plasma display panel comprising a parents glass powder containing 20˜40 wt % of ZnO, 15˜30 wt % of SiO2, 10˜20 wt % of B2O3, 0˜30 wt % of PbO, 0˜20 wt % of MgO, 1˜10 wt % of CaO, 1˜10 wt % of Al2O3, 0˜10 wt % of K2O, 0˜8 wt % of Na2O, 0˜5 wt % of Li2O, 0˜2 wt % of Sb2O3, and 0˜2 wt % of As2O3.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: July 29, 2003
    Assignee: LG Electronics Inc.
    Inventor: Byung-Gil Ryu
  • Patent number: 6583079
    Abstract: A CRT frit for use in sealing a panel and a funnel of a CRT bulb comprises non-crystallizing glass powder and refractory filler powder. The non-crystallizing glass powder consists essentially of, by weight percent, 75-90% PbO, 7-20% B2O3, 0-8% ZnO, 0-5% SiO2, and 0.1-8% Al2O3+Fe3O3. The mixing ratio of the non-crystallizing glass powder and the refractory filler powder is within a range between 95:5 and 55:45 in weight ratio. The coefficient of thermal expansion at a temperature between 30 and 250° C. is within a range between 80 and 90×10−7/° C.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: June 24, 2003
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Yoshitaka Jimura, Masaaki Hayashi
  • Publication number: 20030100428
    Abstract: A dielectric ceramic composition of high dielectric constant and low dielectric loss, which can be co-fired with Ag electrodes, is provided for use in various parts of electric and electronic appliances.
    Type: Application
    Filed: April 17, 2002
    Publication date: May 29, 2003
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Woo Sup Kim, Kang Heon Hur, Jong Han Kim, Joon Hee Kim
  • Publication number: 20030100429
    Abstract: A dielectric ceramic composition of high dielectric constant and low dielectric loss, which can be co-fired with Ag electrodes, is provided for use in various parts of electric and electronic appliances.
    Type: Application
    Filed: April 17, 2002
    Publication date: May 29, 2003
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joon Hee Kim, Kang Heon Hur, Jong Han Kim, Woo Sup Kim
  • Patent number: 6498116
    Abstract: Coating and filler materials for localized thermal processing of glazed ceramics and other brittle and low thermal conductivity materials. The coating materials include oxide compositions that exhibit coefficients of thermal expansion which are less than about 8×10−6/° C. and glass transition temperatures which are less than about 400° C. The filler materials include particulate oxide materials which do not substantially react during localized thermal processing of glazed ceramics and other brittle and low thermal conductivity materials. The coating and filler materials are useable together as a composite material for repairing cavities having depths greater than about 2 mm.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: December 24, 2002
    Assignee: Rutgers, the State University
    Inventors: Richard Long Lehman, Yuya Umezu, Jie Li, Daniel Ely Murnick, James Colaizzi
  • Patent number: 6417123
    Abstract: A dielectric composition for use in formation of a light transparent dielectric layer in a plasma display panel, which comprises glass powder of 90-100 weight % and ceramics powder of 0-10 weight %. The glass powder is powder of glass which consists essentially of, by weight percent, 15-45% BaO, 20-45% ZnO, 15-35% B2O3, 3-15% SiO2, and 0-24.5% PbO.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: July 9, 2002
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Norikazu Fukushima, Hiroyuki Oshita, Takayuki Mito, Masahiko Ouji, Kazuo Hadano
  • Patent number: 6387833
    Abstract: A sealing composition having at least one member from &agr;-4PbO.B2O3 crystal powder and Pb3O4 powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO—ZnO—B2O3—SiO2 type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an &agr;-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: May 14, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Ryuichi Tanabe, Hiroshi Usui, Yutaka Segawa, Yuichi Kuroki, Eiji Ichikura
  • Patent number: 6376400
    Abstract: A low melting point glass for covering electrodes, consisting, as represented by mass percentage based on the following oxides, essentially of: Mass percentage PbO 20 to 60%, Bi2O3  0 to 30%, B2O3 20 to 55%, SiO2  0 to 10%, Al2O3  0 to 15%, MgO + CaO  0 to 35%, SrO  0 to 35%, BaO  0 to 35%, ZnO  0 to 8%.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: April 23, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Satoshi Fujimine, Siro Ootaki, Tsuneo Manabe, Kazuhiko Yamanaka, Masamichi Tanida, Yumiko Aoki
  • Publication number: 20010051585
    Abstract: A composition for barrier ribs of plasma display panels and to a method of fabricating such barrier ribs using the composition is disclosed. The composition for the barrier ribs is SiO2—ZnO—PbO—B2O3 based glass. The SiO2—ZnO—PbO—B2O3 based glass consists of 10-20 wt % of SiO2, 10-30 wt % of ZnO, 5-30 wt % of PbO, 10-30 wt % of B2O3, 2-10 wt % of K2O, 0-5 wt % of Li2O, 1-5 wt % of CaO, 3-8 wt % of Na2O, 1-5 wt % of Al2O3, and 0-2 wt % of Sb2O3. In the method of forming the barrier ribs, the SiO2—ZnO—PbO—B2O3 based glass powder free from an oxide filler is primarily prepared. Paste or slurry is formed by mixing the SiO2—ZnO—PbO—B2O3 based glass with an organic vehicle. A thick film, having a predetermined thickness, is formed on the top surface of a lower substrate using the paste or slurry. Desired barrier ribs are, thereafter, formed by processing the paste or slurry film.
    Type: Application
    Filed: June 29, 2001
    Publication date: December 13, 2001
    Applicant: LG Electronics Inc.
    Inventors: Byung-Gil Ryu, Myeong -Soo Chang
  • Patent number: 6287995
    Abstract: A sealing glass composition for bonding the upper plate and the lower plate of a flat panel display device is described. The sealing glass composition includes a low melting point glass containing PbO of less than 20% and having a sintering temperature of less than 500° C. The sealing glass composition contains a low component of PbO to thereby decrease environmental contamination and increase work efficiency. Also, the sealing glass prevents the deformation and cracking of a substrate caused by thermal and mechanical stress and reduces the sintering temperature to thereby enhance the airtightness of the sealing glass.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: September 11, 2001
    Assignee: LG Electronics Inc.
    Inventor: Yoon Kwan Lee
  • Patent number: 6284687
    Abstract: The present invention relates to glasses of high refractive index having the following composition of oxides, expressed in percentages by weight: SiO2 29-35, B2O3 0.5-5, Li2O 0.5-3, Na2O 4-8, K2O 0-2, PbO 28-40, BaO 4-14, La2O3 4-12, TiO2 3-8, ZnO 0-8, ZrO2 0-4, Nb2O5 0-5, with: Li2O+Na2O+K2O 5.5-9; their use for the production of segments for multifocal corrective lenses; and multifocal corrective lenses incorporating at least one such segment in their structure.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: September 4, 2001
    Assignee: Corning S.A.
    Inventors: Marie M. J. Comte, Paulo Marques
  • Patent number: 6271161
    Abstract: A composition for barrier ribs of plasma display panels and to a method of fabricating such barrier ribs using the composition is disclosed. The composition for the barrier ribs is SiO2—ZnO—PbO—B2O3 based glass. The SiO2—ZnO—PbO—B2O3 based glass consists of 10˜20 wt % of SiO2, 10˜30 wt % of ZnO, 5˜30 wt % of PbO, 10˜30 wt % of B2O3, 2˜10 wt % of K2O, 0˜5 wt % of Li2O, 1˜5 wt % of CaO, 3˜8 wt % of Na2O, 1˜5 wt % of Al2O3, and 0˜2 wt % of Sb2O3. In the method of forming the barrier ribs, the SiO2—ZnO—PbO—B2O3 based glass powder free from an oxide filler is primarily prepared. Paste or slurry is formed by mixing the SiO2—ZnO—PbO—B2O3 based glass with an organic vehicle. A thick film, having a predetermined thickness, is formed on the top surface of a lower substrate using the paste or slurry. Desired barrier ribs are, thereafter, formed by processing the paste or slurry film.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: August 7, 2001
    Assignee: LG Electronics Inc.
    Inventors: Byung-Gil Ryu, Myeong-Soo Chang
  • Patent number: 6248679
    Abstract: A sealing glass composition in powdered form comprising a crystallizable PbO/ZnO/B2O3/SiO2 glass in the vitreous state, an effective amount of a nucleating agent, and an optional filler. The glass composition can be used to seal television picture tubes with excellent results when heated to a hold range of about 420° C. to about 435° C.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: June 19, 2001
    Assignee: Techneglas, Inc.
    Inventor: Jon Bobinski
  • Patent number: 6245699
    Abstract: A sealing glass composition in powdered form comprising a crystallizable base glass in the vitreous state and vanadium zirconium silicate in an amount from about 0.1 to 1 weight percent of the base glass. The sealing glass also may contain aluminum oxide having a particle size of about 90 to 99 percent minus 325 mesh in an amount from about 0.1 to 1.0 weight percent of the base glass and bismuth nitrate in an amount from about 0.02 to 0.08 weight percent of the base glass. The glass composition can be used to seal cathode ray tube face plates and funnels with excellent results when heated to a hold range of about 4300 C to 4500 C. The crystallized sealing glass exhibits improved adhesion to seal edges of the face plates and funnels, increased strength, and improved resistance to organic contamination.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: June 12, 2001
    Assignee: Techneglas, Inc.
    Inventors: Carl J. Hudecek, Joseph V. Peer, Jon G. Bobinski
  • Patent number: 6196684
    Abstract: The present invention relates to glasses of high refractive index having the following composition of oxides, expressed in percentages by weight: SiO2 27-36 B2O3 0-9 Li2O 1-5 Na2O 1-7 K2O 0-7 CaO 0-7 BaO  4-13 ZnO 0-8 La2O3  4-15 PbO  4-27 TiO2  7-18 ZrO2 0-9 Nb2O5 0-8 with: Li2O + Na2O + K2O  6-15 SiO2 + TiO2 + ZrO2 42-55 PbO + TiO2 + ZrO2 + Nb2O5 29-40; their use for the production of segments for multifocal corrective lenses; and multifocal corrective lenses incorporating at least one such segment in their structure.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: March 6, 2001
    Assignee: Corning S.A.
    Inventors: Marie M. J. Comte, Paulo Marques
  • Patent number: 6184163
    Abstract: A dielectric composition for a plasma display panel. In the dielectric composition, a SiO3—ZnO—B2O3 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: Grant
    Filed: December 10, 1998
    Date of Patent: February 6, 2001
    Assignee: LG Electronics Inc.
    Inventors: Yoon Kwan Lee, Byung Gil Ryu
  • Patent number: 6159883
    Abstract: A low-fire, low-dielectric ceramic composition is disclosed. The ceramic composition comprises a mixture of finely divided particles consisting of 30-90% by volume of Ca--Pb--Al--Zn--B--Si glass and 70-10% by volume of oxides, which can be densified up to 95% at temperatures of 800-1000.degree. C. The sintered body produced thereby exhibits a dielectric constant in the range of 6-10 and a dielectric loss in the range of 0.01%-0.5% at 1 MHz. The ceramic composition can be processed with organic solvents, polymeric binders and plasticizers to produce a green sheet which is co-firable with high electrical conductivity metals such as gold, silver, silver-palladium and copper.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: December 12, 2000
    Assignee: Advanced Ceramic X Corp.
    Inventors: Shih-Chun Lin, Jau-Ho Jean
  • Patent number: 6083858
    Abstract: The present invention relates to a sealing glass composition, which is able to seal a panel and funnel of a color TV at low temperature for a short time by adding Garnet(Fe.sub.3 Al.sub.2 Si.sub.3 O.sub.12) as a nucleating agent and filler component to control the thermal expansion coefficient.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: July 4, 2000
    Assignee: Samsung Corning Co., Ltd.
    Inventors: Tae Ho Park, Sung Hoon Moon, Young Gil Nam
  • Patent number: 6010973
    Abstract: A dielectric forming material for a plasma display panel enables to form a dielectric layer having a high dielectric strength and good transparency. The dielectric forming material is provided with a green sheet in form that comprises, as a component, glass powder having a 50% particle diameter D.sub.50 which is not more than 2.8 .mu.m. Preferably, the glass powder preferably may have the maximum particle diameter D.sub.MAX which is not more than 18 .mu.m. Desirably, the green sheet essentially may consist by weight of 60-80% the glass powder, 0-10% ceramic powder, 5-30% thermoplastic resin, and 0-10% plasticizer.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: January 4, 2000
    Assignee: Nippon Electric Glass, Co., Ltd.
    Inventors: Hiromitsu Watanabe, Hiroyuki Oshita, Masahiko Ohji, Kazuo Hadano
  • Patent number: 5985460
    Abstract: A coatable insulator composition for use in the formation of a green tape comprising fine inorganic micropowders composed of amorphous glass and a refractory oxide in a volatile organic solvent solution of a binder composed of a polymer substance and a plasticizer(s). A green tape obtained by coating said composition over a flexible substrate, and heating and drying this product to remove the organic solvent; and a method for forming a barrier-rib for a plasma display apparatus by sandblast etching using said green tape as an insulator layer for the barrier-rib formation. A use of a pre-formed green tape of uniform thickness in the formation of the barrier-rib of a plasma display apparatus allows the thickness uniformity of the barrier-rib to be improved and the work rationalized, which means that the plasma display apparatus can be made larger and finer, and mass production throughput will be enhanced.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl Baasun Wang, John James Felten, Hiroshi Kanda, Motohiko Tsuchiya
  • Patent number: 5948537
    Abstract: A substrate for a plasma display panel, having electrodes and a covering material for the electrodes, provided thereon, wherein the covering material is a non-crystallizable glass having a softening point of at most 510.degree. C. and an average thermal expansion coefficient of from 70.times.10.sup.-7 to 85.times.10.sup.-7 /.degree.C. within a range of from 50 to 350.degree. C.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: September 7, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Hitoshi Onoda, Yumiko Aoki, Tsuneo Manabe, Masamichi Tanida
  • Patent number: 5916832
    Abstract: A hermetic sealing composition consisting essentially of from 90 to 99.95 wt % of a crystalline low melting glass powder and from 0.05 to 10 wt % of a low expansion ceramic filler powder, and having an average thermal expansion coefficient after firing of from 80.times.10.sup.-7 to 110.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C., wherein the crystalline low melting glass consists essentially of:______________________________________ PbO 71.5 to 78.0 wt % ZnO 10.5 to 14.5 wt % B.sub.2 O.sub.3 7.0 to 10.0 wt % SiO.sub.2 1.65 to 3.0 wt % BaO 0.1 to 1.95 wt % SrO 0 to 1.5 wt % CaO 0 to 1.5 wt % BaO + SrO + CaO 0.5 to 1.95 wt %, ______________________________________and contains substantially no fluorine, and the weight ratio of ZnO/PbO is within a range of from 0.14 to 0.20.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: June 29, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Ryuichi Tanabe, Hiroshi Usui, Tsuneo Manabe, Yuichi Kuroki
  • Patent number: 5821182
    Abstract: A hermetic sealing composition comprising 100 parts by weight of a basic composition consisting of from 80 to 99.9 wt % of a crystalline low melting glass powder containing lead and boron and from 0.1 to 20 wt % of a low expansion ceramic filler, and from 0.001 to 1.0 part by weight, in total, of at least one of an .alpha.-4PbO.B.sub.2 O.sub.3 crystal powder and a Pb.sub.3 O.sub.4 powder, incorporated to the basic composition, the thermal expansion coefficient of the sealing composition after firing being from 80.times.10.sup.-7 to 105.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: October 13, 1998
    Assignees: Asahi Glass Company Ltd., Iwaki Glass Company Ltd.
    Inventors: Ryuichi Tanabe, Satoshi Rokudai, Yuichi Kuroki, Akira Nakamura
  • Patent number: 5792716
    Abstract: The present invention provides a new and improved thick film paste for use as an acid resistant overglaze. In one preferred embodiment such paste includes a glass composition comprising in weight percent from about 30% to about 60% PbO, from about 5% to about 20% ZnO, from about 2% to about 20% B.sub.2 O.sub.3, from about 4% to about 12% Al.sub.2 O.sub.3, from about 5% to about 18% SiO.sub.2, up to about 8% ZrO.sub.2, up to about 8% TiO.sub.2 and from about 9% to about 21% Nb.sub.2 O.sub.5.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: August 11, 1998
    Assignee: Ferro Corporation
    Inventors: Subramanian Vasudevan, Srinivasan Sridharan, Gordon J. Roberts
  • Patent number: 5711779
    Abstract: A method for the manufacture of phosphate glass comprising forming an aqueous slurry by mixing phosphoric acid, a zinc compound and other batch materials in the required proportions, heating the batch slurry to produce a molten phosphate glass that exhibits a P.sub.2 O.sub.5 /ZnO weight ratio range between about 1.2 to 2.0, and cooling the molten phosphate glass to room temperature.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: January 27, 1998
    Assignee: Corning Incorporated
    Inventors: Noshir B. Havewala, Kevin T. Morris, Michelle D. Pierson, Robert D. Shoup
  • Patent number: 5700744
    Abstract: The glass panel and funnel of a color TV picture tube are sealed to one another at 420.degree. C. within 20 minutes, using a composition which includes:(a) 93-99.8 weight percent PbO--B.sub.2 O.sub.3 --ZnO devitrifiable glass powder made of:74-82 weight percent PbO,7-10 weight percent B.sub.2 O.sub.3,8-12 weight percent ZnO,1-4 weight percent SiO.sub.2,0.05-0.5 weight percent MgO,0.1-0.5 weight percent BaO, and0.1-0.5 weight percent F;(b) 0.1-4.0 weight percent synthetic zircon having a specific surface area of 1.0-2.0 m.sup.2 /g, as a nucleating agent; and(c) 0.1-3.0 weight percent corderite, as a filler.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: December 23, 1997
    Assignee: Samsung Corning Co., Ltd.
    Inventors: Tae Ho Park, Chun Suk Kim, Sung Hun Moon
  • Patent number: 5683948
    Abstract: A hermetic sealing composition comprising 100 parts by weight of a basic composition consisting of from 80 to 99.9 wt % of a crystalline low melting glass powder containing lead and boron and from 0.1 to 20 wt % of a low expansion ceramic filler, and from 0.001 to 1.0 part by weight, in total, of at least one of an .alpha.-4PbO.B.sub.2 O.sub.3 crystal powder and a Pb.sub.3 O.sub.4 powder, incorporated to the basic composition, the thermal expansion coefficient of the sealing composition after firing being from 80.times.10.sup.-7 to 105.times.10.sup.-7 /.degree.C. within a range of from room temperature to 300.degree. C.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: November 4, 1997
    Assignees: Asahi Glass Company Ltd., Iwaki Glass Company Ltd.
    Inventors: Ryuichi Tanabe, Satoshi Rokudai, Yuichi Kuroki, Akira Nakamura
  • Patent number: 5643840
    Abstract: A low temperature sealing composition comprising PbO--B.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 glass powder with a reduced amount of SiO.sub.2 content but with an addition of GeO.sub.2 so as to realize a lowered sealing temperature such as 400.degree.-310.degree. C. The glass powder consists essentially of 25-85 wt. % of PbO, 1-11.2 wt. % of B.sub.2 O.sub.3, 5.1-70 wt. % of Bi.sub.2 O.sub.3, 0.1-20 wt. % of GeO.sub.2, 0-5 wt. % of SiO.sub.2, 0-10 wt. % of Fe.sub.2 O.sub.3, 0-10 wt. % of CuO, 0-15 wt. % of ZnO, 0-5 wt. % of TiO.sub.2, and 0-9 wt. % of F.sub.2. The glass powder may be used by mixing with 15-55 vol. % of refractory filler powder of at least one element which is selected from the group consisting of lead titanate based ceramic powder, willemite based ceramic powder, cordierite ceramic powder, zircon based ceramic powder, tin oxide solid solution powder, and alumina powder.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: July 1, 1997
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Hajime Hikata, Yoshitaka Jimura, Kumi Tanaka
  • Patent number: 5612261
    Abstract: The present invention relates to a novel sealing glass composition, in particular, one which comprises solid PbO--ZnO--B.sub.2 O.sub.3 glass and natural garnet as a filler component. This composition has the advantage that thermal strain does not occur at the interface between the crystalline glass and filler because of the excellent chemical affinity. This prevents cracks from propagating at the interface between the main glass and filler, thereby improving the mechanical strength of the glass.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: March 18, 1997
    Assignee: Samsung Corning Co., Ltd
    Inventors: Byung C. Lim, Tae H. Park, Tae H. Park
  • Patent number: 5565389
    Abstract: The invention relates to a glass of high refractive index suitable for the close-vision part of multifocal, in particular phototropic multifocal, spectacle lenses. The glass has a composition (in % by weight, based on oxide) of:SiO.sub.2 28-40; B.sub.2 O.sub.3 0-8.5; Li.sub.2 O 0-1; Na.sub.2 O 0-2.5; K.sub.2 O 0-5; CaO 0-6; SrO 0-6; BaO 6-12; ZnO 9-16; PbO 32-40; TiO.sub.2 0.3-7; ZrO.sub.2 0.4-5; .SIGMA. Li.sub.2 O+Na.sub.2 O+K.sub.2 O 0-5, anda refractive index n.sub.e of 1.66-1.81, an expansion coefficient .alpha..sub.20-300 of 5.7-6.8.times.10.sup.-6 K.sup.-1, a softening point of 650.degree.-700.degree. C. and a glass transition temperature Tg of 520.degree.-560.degree. C.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: October 15, 1996
    Assignee: Deutsche Spezialglas A.G.
    Inventor: Reinhard Kassner
  • Patent number: 5547907
    Abstract: The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: August 20, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaaki Katsumata, Osamu Kanaya, Nobuharu Katsuki, Akihiro Takami
  • Patent number: 5534469
    Abstract: As a sealing composition which can seal a panel and a funnel of a color CRT at a relatively low temperature for a relatively short time, a non-crystallizing sealing glass essentially consists of PbO--ZnO--B.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 --CS.sub.2 O system and has a thermal expansion coefficient of 80 to 95.times.10.sup.-7 /.degree.C. The sealing glass can be used as a mixture with 40 to 5 volume percent of refractory filler powder. The PbO--ZnO--B.sub.2 O.sub.3 --Cs.sub.2 O system glass consists essentially of, by weight, 65-80% of PbO, 5.5-8% of B.sub.2 O.sub.3, 3-9% of ZnO, 7-22% of Bi.sub.2 O.sub.3, 16% or more of ZnO +Bi.sub.2 O.sub.3, 0.2-1% of SiO.sub.2, 0.3-2% of Fe.sub.2 O.sub.3, and 1.5-4.5% of Cs.sub.2 O. The refractory filler is at least one element selected from tin oxide, lead titanate, and zinc silicate.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: July 9, 1996
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventor: Masaaki Hayashi
  • Patent number: 5483628
    Abstract: The present invention is directed to the preparation of two groups of transparent glass-ceramics exhibiting high optical clarity and containing essentially only one crystal phase. The first group consists essentially, in cation percent, of______________________________________ SiO.sub.2 20-35 PbF.sub.2 19-23 AlO.sub.1.5 10-20 YF.sub.3 3-7, CdF.sub.2 19-34 ______________________________________and the second group consists essentially, in cation percent, of ______________________________________ SiO.sub.2 20-35 PbF.sub.2 15-25 AlO.sub.1.5 10-20 YF.sub.3 3-7 CdF.sub.2 21-31 ZnF.sub.2 3-7.
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: January 9, 1996
    Assignee: Corning Incorporated
    Inventors: Nicholas F. Borrelli, Lauren K. Cornelius, Mark A. Newhouse, Paul A. Tick
  • Patent number: 5482526
    Abstract: The instant invention describes a method for preparing a stable, anhydrous non-hygroscopic zinc phosphate compound which is suitable for use as a batch material in the preparation of zinc-phosphate glasses. This method comprises three basic steps: first, forming an aqueous slurry mixture by intimately mixing a mixture containing phosphoric acid and a zinc-containing compound whereby the so-formed slurry mixture is comprised of a mixture of zinc hydrogen phosphates and exhibits a P.sub.2 O.sub.5 /ZnO weight ratio range between about 1.2 to 2.0; second, heating the so-formed slurry mixture to a temperature and for a time sufficient to achieve both a removal of a sufficient amount of water and the phase transformation of the zinc hydrogen phosphates resulting in zinc-phosphate material comprised of granular solid mixture of zinc metaphosphates and zinc pyrophosphate and third, cooling the zinc-phosphate material to room temperature.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: January 9, 1996
    Assignee: Corning Incorporated
    Inventors: Noshir B. Havewala, Kevin T. Morris, Robert D. Shoup
  • Patent number: 5470804
    Abstract: A sealing glass material comprising a thermally crystallizable, PbO--ZnO--B.sub.2 O.sub.3 sealing glass flit and a mill addition selected from alumina, zircon, and manganese dioxide, the mill addition being in an amount sufficient to increase the mechanical strength in a fusion seal to at least 55.2 MPa(8000 psi), but the amount being not over about 5% by weight of the sealing material.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: November 28, 1995
    Assignee: Corning Incorporated
    Inventor: Robert Morena
  • Patent number: 5447892
    Abstract: The present invention relates to a zinc oxide varistor as a characteristic element of an arrestor for protecting a transmission and distribution line and peripheral devices thereof from surge voltage created by lightning, and more particularly a highly reliable zinc oxide varistor excellent in the non-linearity with respect to voltage, the discharge withstand current rating properties, and the life characteristics under voltage, a method of preparing the same, and PbO type crystallized glass for coating oxide ceramics employed for a zinc oxide varistor, etc. A zinc oxide varistor of the present invention comprises a sintered body (1) and a high resistive side layer (3) consisting of crystallized glass with high crystallinity containing the prescribed amount of SiO.sub.2, MoO.sub.3, WO.sub.3, TiO.sub.2, NiO, etc.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: September 5, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaaki Katsumata, Osamu Kanaya, Nobuharu Katsuki, Akihiro Takami
  • Patent number: 5393558
    Abstract: The present invention provides a method of adherently depositing a thick film composition on an aluminum nitride substrate comprising the steps of providing an aluminum nitride substrate, providing a thick film composition, and applying the thick film composition on the aluminum nitride substrate. The thick film composition includes a glass frit binder, a conductive metallic material and a lithium-containing adhesion promoting compound.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: February 28, 1995
    Assignee: Ferro Corporation
    Inventors: Kevin W. Allison, Dana L. Hankey, Edward Stadnicar, Jr., Gordon J. Roberts