Patents Represented by Attorney C. S. Janes
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Patent number: 5021366Abstract: This invention is drawn particularly to the production of glasses having essentially fluorine-free compositions consisting essentially, in mole percent, of:______________________________________ Li.sub.2 O 5-10 P.sub.2 O.sub.5 30-36 Na.sub.2 O 5-15 Al.sub.2 O.sub.3 0-5 K.sub.2 O 0-6 CeO.sub.2 0-2 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 15-25 SnO 0-20 ZnO 10-33 PbO 0-20 CaO 0-20 Sb.sub.2 O.sub.3 0-12 SrO 0-20 Bi.sub.2 O.sub.3 0-6 BaO 0-20 SnO + PbO + 0-20. Sb.sub.2 O.sub.3 + Bi.sub.2 O.sub.Type: GrantFiled: October 19, 1990Date of Patent: June 4, 1991Assignee: Corning IncorporatedInventor: Bruce G. Aitken
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Patent number: 5019538Abstract: This invention is directed to photosensitively opacifiable glasses consisting essentially, in weight percent, of about 14-18% Na.sub.2 O, 0-6% Zno, 6-12% Al.sub.2 O.sub.3, 0-5% B.sub.2 O.sub.3, 0-0.2% Sb.sub.2 O.sub.3, 0-0.1% SnO, 65-72% SiO.sub.2, and 0.007-0.04% Ag, 0.008-0.05% CeO.sub.2, 0.7-1.25% Br, and 1.5-2.5% F as analyzed in the glass, the sum of those components constituting at least 90% of the total composition, which, through an exposure to ultraviolet radiation, followed by a three-step heat treatment, and then a re-exposure to ultraviolet radiation at an elevated temperature, can be converted into a colored opal glass.Type: GrantFiled: November 13, 1989Date of Patent: May 28, 1991Assignee: Coring IncorporatedInventors: Nicholas F. Borrelli, Dennis W. Smith
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Patent number: 5007948Abstract: This invention relates to the production of an essentially colorless alkali meal oxide-Al.sub.2 O.sub.3 and/or B.sub.2 O.sub.3 -SiO.sub.2, wherein at least a portion thereof contains silver ions resulting from an ion exchange reaction wherein Ag.sup.+ ions from an external source are exchanged with alkali metal ions in the glass. The amount of exchange can be varied across a portion of the glass to impart a gradient in refractive index thereto. Such technology is especially suited to the optical engineering field, particularly the making of high performance fiber-optic components.Type: GrantFiled: March 19, 1990Date of Patent: April 16, 1991Assignee: Corning IncorporatedInventor: Roger J. Araujo
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Patent number: 5008221Abstract: This invention is directed to the production of ceramic alloys consisting essentially of partially stabilized ZrO.sub.2 and/or ZrO.sub.2 -HfO.sub.2 solid solution and/or HfO.sub.2 exhibiting high toughness through the inclusion of about 0.5-8 mole %, as expressed on the oxide basis, of YNbO.sub.4 and/or YTaO.sub.4 and/or MNbO.sub.4 and/or MTaO.sub.4, wherein M represents Mg.sup.+2, Ca.sup.+2, Sc.sup.+3 and/or a rare earth metal ion selected from the group of La.sup.+3, Ce.sup.+4, Ce.sup.+3, Pr.sup.+3, Nd.sup.+3, Sm.sup.+3, Eu.sup.+3, Gd.sup.+3, Tb.sup.+3, Dy.sup.+3, Ho.sup.+3, Er.sup.+3, Tm.sup.+3, Yb.sup.+3, and Lu.sup.+3 substituted for Y, and the use of at least 5 volume percent of such ceramic alloys to toughen hard refractory ceramics.Type: GrantFiled: June 12, 1990Date of Patent: April 16, 1991Assignee: Corning IncorporatedInventor: Thomas D. Ketcham
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Patent number: 4920081Abstract: This invention relates to the preparation of glasses exhibiting low transition temperatures with excellent chemical durability. The glasses consist essentially, in mole %, of:______________________________________ P.sub.2 O.sub.5 44-58 Al.sub.2 O.sub.3 + 4-10 Na.sub.2 O + Li.sub.2 O 10-45 B.sub.2 O.sub.3 Al.sub.2 O.sub.3 0-7 Na.sub.2 O 10-30 Cu.sub.2 O 0-20 B.sub.2 O.sub.3 0-10 Li.sub.2 O 0-30 Li.sub.2 O + Cu.sub.Type: GrantFiled: October 17, 1988Date of Patent: April 24, 1990Assignee: Corning IncorporatedInventors: George H. Beall, Candace J. Quinn
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Patent number: 4775596Abstract: This invention is particularly directed to the preparation of inorganic ceramic laminated structures for use as substrates in integrated circuit packages. One lamina is composed of a high thermal conductivity material, the second lamina is composed of a low thermal conductivity material having a dielectric constant below 10, a sintering temperature below 1050.degree. C., and a linear coefficient of thermal expansion compatible with that of the other lamina, and a bonding medium sealing the two laminae together exhibiting flow at a temperature below the sintering temperature of the second lamina and a linear coefficient of thermal expansion compatible with those of the two laminae.Type: GrantFiled: February 18, 1987Date of Patent: October 4, 1988Assignee: Corning Glass WorksInventors: Louis M. Holleran, Gregory A. Merkel, Robert J. Paisley, Kathleen A. Wexell
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Patent number: 4752313Abstract: There is disclosed a method of producing an elongated, fiber-reinforced composite having a glass or glass-ceramic matrix and an elongated axial form. A continuous length of fibers is impregnated with glass and the impregnated fiber body consolidated by being pultruded through a die. A combination of axial tension to pultrude the fiber body and sintering pressures exerted by the die result in a composite body of continuous length.Type: GrantFiled: December 16, 1986Date of Patent: June 21, 1988Assignee: Corning Glass WorksInventors: Roger A. Allaire, William P. Ryszytiwskyj, Robert V. VanDewoestine
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Patent number: 4734388Abstract: The present invention relates to glass compositions suitable for cathode ray tube faceplates which are essentially free from readily reducible metal oxides, MgO, and fluorine, and which consist essentially, in weight percent on the oxide basis, of:______________________________________ SiO.sub.2 60-63 BaO 5.5-8.5 ZrO.sub.2 + Al.sub.2 O.sub.3 >4-6.25 Li.sub.2 O 0.25-0.8 CaO 1.5-4.0 Sb.sub.2 O.sub.3 0.25-0.55 Na.sub.2 O 7.25-9.25 TiO.sub.2 0.25-0.75 As.sub.2 O.sub.3 0-0.25 K.sub.2 O 6-8.25 ZrO.sub.2 4-6.25 Sb.sub.2 O.sub.3 + As.sub.2 O.sub.3 0.35-0.75 SrO 5.5-8.5 Al.sub.2 O.sub.3 0-<2 CeO.sub.2 0.15-0.5.Type: GrantFiled: November 4, 1986Date of Patent: March 29, 1988Assignee: Corning Glass WorksInventors: Robert A. Cameron, John H. Connelly
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Patent number: 4726981Abstract: This invention is directed to the production of unitary, transparent glass articles demonstrating exceptionally high flexural and impact strengths composed of an interior portion and an integral surface compression layer. The articles are prepared by contacting glass bodies consisting essentially, in mole percent, of 14-24% R.sub.2 O, wherein R.sub.2 O consists of 0-5% Li.sub.2 O, 0-5% K.sub.2 O, and the remainder Na.sub.2 O, 17-21% Al.sub.2 o.sub.3, 45-60% SiO.sub.2, 3-6% TiO.sub.2 and/or ZrO.sub.2, and 0-2% P.sub.2 O.sub.5, the sum of those components constituting at least 85% of the total composition, at a temperature above the annealing point of the glass with a source of Li.sup.+ ions to replace at least part of the Na.sup.+ ions and, if present, K.sup.+ ions in a surface layer with a corresponding amount of Li.sup.+ ions and to react the Li.sup.+ ions with Al.sub.2 O.sub.3 and SiO.sub.2 in the surface layer to form crystallites of beta-quartz solid solution nucleated by the TiO.sub.2 and/or ZrO.sub.2.Type: GrantFiled: June 10, 1985Date of Patent: February 23, 1988Assignee: Corning Glass WorksInventors: Joseph E. Pierson, Stanley D. Stookey
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Patent number: 4719187Abstract: This invention is directed to the production of nitride-based ceramic bodies selected from the group of AlN and Si.sub.3 N.sub.4 which can be sintered to near theoretical densities at temperatures at least 200.degree. C. lower than those required for the pure materials. Such bodies are densified through the addition of a metal fluoride selected from the group of aluminum, barium, calcium, srtrontium, yttrium, the lanthanide rare earth metals, and mixtures thereof. Up to 80% by weight of said metal fluoride may be included but, generally, such additions will be held between 5-30% by weight. AlN bodies exhibiting very high thermal conductivity can be prepared by sintering with a metal fluoride selected from the group of barium, calcium, strontium, yttrium, the lanthanide rare earth metals, and mixtures thereof.Type: GrantFiled: December 3, 1986Date of Patent: January 12, 1988Assignee: Corning Glass WorksInventors: Pronob Bardhan, Gregory A. Merkel
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Patent number: 4719151Abstract: There is disclosed a laminated ceramic structure including a facing member and a backing member, the two members being bonded together either directly or through an intermediate layer, the facing member being formed from a very hard ceramic such as a carbide having a KHN.sub.100 value in excess of 1000 kg/mm.sup.2, the backing member being a glass or glass-ceramic matrix having an enhanced capability or absorbing impact energy, preferably being fiber reinforced and having an energy absorbing capacity in excess of 10 KJ/m.sup.2.Type: GrantFiled: May 9, 1986Date of Patent: January 12, 1988Assignee: Corning Glass WorksInventors: Kenneth Chyung, Reid F. Cooper, Kishor P. Gadkaree, Ronald L. Stewart, Mark P. Taylor
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Patent number: 4715987Abstract: This invention relates to a method for forming a product from a naturally occurring phyllosilicate, the method comprising the steps of:(a) exposing the phyllosilicate to a source of exchangeable cations to effect a change in the chemical makeup of the phyllosilicate interlayer by ion transfer;(b) exposing the ion-exchanged phyllosilicate to an expanding agent selected from the group consisting of a primary aminocarboxy acid, lysine orotate, and glycylglycine to expand the cell spacing and cause gel formation;(c) flocculating the gel;(d) forming a gel-floc interface; and(e) withdrawing the flocculated gel from that interface.Type: GrantFiled: May 12, 1986Date of Patent: December 29, 1987Assignee: Corning Glass WorksInventor: Hermann L. Rittler
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Patent number: 4714687Abstract: This invention is directed to the production of glass-ceramic materials especially designed for substrates in integrated circuit packaging. The glass-ceramics can be prepared from thermally crystallizable glasses that can be sintered into an integral glass-ceramic having a dielectric constant less than 6 and containing willemite as the predominant crystal phase. The overall composition of the glass-ceramic consists essentially, in weight percent of 15-45% ZnO, 10-30% Al.sub.2 O.sub.3, and 30-55% SiO.sub.2. Where desired, a nucleating agent selected from the group consisting of 8-12% ZrO.sub.2 and 0.001-0.05% of a noble metal selected from the group consisting of Au, Pd, and Pt may be included.Type: GrantFiled: October 27, 1986Date of Patent: December 22, 1987Assignee: Corning Glass WorksInventors: Louis M. Holleran, Francis W. Martin
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Patent number: 4711860Abstract: A composite glass ceramic material which comprises silicon nitride (Si.sub.3 N.sub.4) whiskers in a glass ceramic material comprising nitrogen doped cordierite, which composite material has greatly increased strength at elevated temperatures, good microwave transparency, and good thermal shock resistance.The invention further comprises a method for manufacturing the composite material by blending ground nitrogen doped cordierite glass with between about 5 and about 50 percent Si.sub.3 N.sub.4 whiskers by weight of glass. The blend is then formed into a desired shape and is sintered at an elevated temperature of from about 1000.degree. to 1400.degree. C.The invention also includes the novel nitrogen doped cordierite glass and glass ceramic made therefrom.Type: GrantFiled: March 12, 1986Date of Patent: December 8, 1987Assignee: Corning Glass WorksInventors: Kishor P. Gadkaree, William L. Haynes, Kun-Er Lu
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Patent number: 4712156Abstract: There is disclosed a ceramic ferroelectric material consisting basically of lead magnesium niobate, lead nickel niobate lead titanate, having a stabilized perovskite crystal phase, having a high dielectric constant with a broad or diffuse ferroelectric to paraelectric phase transition, and adapted to being fired at temperatures up to 1200.degree. C. Numerous additives and their effects on dielectric properties are also disclosed.Type: GrantFiled: February 11, 1987Date of Patent: December 8, 1987Assignee: Corning Glass WorksInventor: Pronob Bardhan
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Patent number: 4710430Abstract: This invention is directed to a method for modifying the coloration produced in a silver halide-containing photochromic glass when heat treating the glass at a temperature not exceeding 450.degree. C. under reducing conditions. The method comprises subjecting such a glass having a base composition which contains at least 1% by weight Li.sub.2 O, at least 2% by weight Na.sub.2 O, and at least 6% by weight Li.sub.2 O+Na.sub.2 O+K.sub.2 O to an ion exchange reaction, wherein lithium ions, and potassium ions, when the latter are present in the composition, in the glass surface are exchanged with sodium ions from an external source, prior to the reduction heat treatment.Type: GrantFiled: May 3, 1985Date of Patent: December 1, 1987Assignee: Corning Glass WorksInventors: Nicholas F. Borrelli, George B. Hares, Dennis W. Smith, Brent M. Wedding
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Patent number: 4710217Abstract: The present invention is directed to a method for developing a bond having a shear strength in excess of 1200 psi between dental cements and dental appliances fashioned from glass-ceramic materials. The inventive method consists of contacting the fitting surface of the appliance with an etchant in flowable gel form at a temperature below about 150.degree. F., while protecting the exterior surface of the appliance. Subsequently, a silane solution followed by a dental cement is applied to the etched surface and cured in place.Type: GrantFiled: March 10, 1986Date of Patent: December 1, 1987Assignee: Corning Glass WorksInventors: Lorraine F. Bailey, Richard J. Bennett
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Patent number: 4707458Abstract: This invention relates to the production of transparent glass-ceramic bodies exhibiting properties especially suitable for use in ring laser gyros. The inventive products contain .beta.-quartz solid solution as essentially the sole crystal phase and consist essentially, expressed in terms of weight percent on the oxide basis, of______________________________________ SiO.sub.2 64-67 ZnO 0.7-4.2 Al.sub.2 O.sub.3 21-24 TiO.sub.2 2.0-3.25 Li.sub.2 O 2.6-3.7 ZrO.sub.2 1.25-2.5 MgO 0.8-1.5 TiO.sub.2 + ZrO.sub.2 4-5.Type: GrantFiled: June 3, 1985Date of Patent: November 17, 1987Assignee: Corning Glass WorksInventors: Kenneth Chyung, Philip M. Fenn, Mark P. Taylor
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Patent number: 4699831Abstract: There is disclosed a composite body that is electrically insulating, and that is composed of metal particles dispersed in a continuous glassy matrix as a second phase. The metal particles are directionally anisotropic generally paralleling a predetermined plane through the body. This permits good thermal conductivity, while retaining the electrical insulating character of the glass, thus providing improved packaging for electronic components. A method of forming the composite body is also disclosed, as are methods of creating improved electronic packaging utilizing the composite material body.Type: GrantFiled: June 21, 1985Date of Patent: October 13, 1987Assignee: Corning Glass WorksInventors: Michael J. Hartmann, Kuang-hsin K. Lo, Daniel A. Nolan
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Patent number: 4693987Abstract: This invention relates to glass compositions especially designed for use as envelopes for tungsten-halogen incandescent lamps wherein molybdenum metal lead wires are utilized. The glasses consist essentially, expressed in terms of weight percent on the oxide basis, of 8.5-14% BaO, 10.5-12.5% CaO, 14-15.5% Al.sub.2 O.sub.3, and 59.5-63% SiO.sub.2.Type: GrantFiled: September 8, 1986Date of Patent: September 15, 1987Assignee: Corning Glass WorksInventor: Paul S. Danielson