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Corning Glass Works Patents
Assignee:
Corning Glass Works
Address:
Corning, NY
No. of patents:
1164
Patents:












Patent Number Title Of Patent Date Issued
4760672 Simultaneously grinding and polishing preforms for optical lenses August 2, 1988
An optical surface on a glass preform for an optical lens is simultaneously ground and polished. A glass blank is rotated by a work spindle mounted in an air bearing. A resin bonded diamond cutting ring is rotated by a tool spindle mounted in an air bearing. The axis of the tool spindle
4759892 Method and apparatus for aligning body with honeycomb structure July 26, 1988
A body having a large number of protrusions is aligned with a honeycomb surface having a greater number of openings, selected openings being engaged by the protrusions when the body is aligned, by positioning the body against the honeycomb surface and vibrating it until the protrusions
4758272 Porous metal bodies July 19, 1988
This invention is concerned with the production of hard, porous, sintered bodies consisting essentially of Al and Fe with, optionally, Sn and/or Cu and/or Cr. The mechanism of the invention relies upon the presence of a small amount of Mg and/or Ca to act as a getter for oxygen. In the
4757034 Lightly tinted glasses of variable transmission July 12, 1988
This invention relates to the production of lightly tinted, photochromic glasses having base compositions consisting essentially, in weight percent, ofGlass color can be adjusted by introducing in excess of the above base composition, at least one of the following colorants in the indica
4755489 Reinforced calcium aluminosilicate glass-ceramics July 5, 1988
The present invention is directed to the production of SiC whisker- and/or fiber-reinforced, internally-nucleated glass-ceramic matrix composite articles consisting essentially of 0.5-60% by weight SiC whiskers and/or 15-70% by volume ceramic fibers substantially uniformly distributed in
4753902 Transformation toughened zirconia-titania-yttria ceramic alloys June 28, 1988
This invention is directed to the production of ceramic alloys consisting essentially of ZrO.sub.2, titania, and yttria or rare earth oxides such as gadolinia, ytterbia, neodymia, and ceria. Mole % concentration values as low as 0.25 mole % for yttria have been found to provide a hard an
4752938 Baffled glass melting furnaces June 21, 1988
There is disclosed a glass melting furnace having various forms of baffles located within the melt for dividing the furnace into zones and creating extended flow paths within the furnace for increasing the minimum residence time of the glass within the furnace and thereby improving glass
4752593 Stabilized CdF.sub.2 -PbF.sub.2 -AlF.sub.3 -alkali fluoride glasses June 21, 1988
Metal halide glasses of CdF.sub.2 -LiF-AlF.sub.3 -PbF.sub.2 composition but comprising KF and one or more of LaF.sub.3 and YF.sub.3 as stabilizers, and also including a minor amount of oxygen as a further stabilizer, exhibit excellent glass stability and low hydroxyl content as evidenced
4752516 Apparatus for high speed manifolding of honeycomb structures June 21, 1988
The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate filter bodies and
4752353 Method for transfer printing of TV shadow mask resist June 21, 1988
An offset printing process is utilized for printing an acid resist ink onto both sides of a TV aperture mask. Printing is accomplished after the mask has been formed into an approximate spherical or cylindrical shape, and after a peripheral frame has been attached thereto. The resist ink
4752313 Pultrusion process for fiber-reinforced composites June 21, 1988
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
4750926 Method of making precision shaped apertures in glass June 14, 1988
Method of producing precision shaped apertures in glass is shown. A hollow glass member defining a longitudinal aperture is provided. A carbon graphite member is shaped externally to a desired shape, disposed within the longitudinal aperture in the glass member, which member is thereafte
4750802 Optical fiber dispersion compensator June 14, 1988
The various wavelength components propagating in a transmission optical fiber are delayed different times. A conventional dispersion compensation system connects the transmitted signal to wavelength dispersor means which spatially separates the different wavelength components of the tran
4748137 Low temperature melting frits May 31, 1988
This invention is directed to the production of essentially lead-free glass compositions demonstrating softening points below 500.degree. C. and coefficients of thermal expansion somewhat below 88.times.10.sup.-7 /.degree.C. The glasses consist essentially, in weight percent on the o
4747864 Process for the precision molding of glass articles May 31, 1988
Glass products such as glass lens elements are formed by an improved direct molding process at glass viscosities in the range of 10.sup.8 -10.sup.12 poises. Selected moldable alkali aluminofluorophosphate optical glasses are pressed to an optical surface finish in air utilizing an optica
4746634 Solarization-resistant glass microsheet May 24, 1988
This invention is directed to the production of glass microsheet which strongly resists solarization and exhibits an ultraviolet cutoff at 370 nm, the glass consisting essentially, expressed in terms of weight percent on the oxide basis, of
4746633 Fast fading photochromic glass May 24, 1988
This invention is directed to transparent photochromic glasses that can darken to a comfort range, i.e., between about 35-60%, or to a dark range, i.e., below 35%, depending upon glass composition, and will exhibit a faded transmittance after five minutes' removal from actinic radiation
4746632 Inorganic crystalline fibers May 24, 1988
This invention is directed to the production of inorganic crystalline fibers containing a minor amount of Mo0.sub.3 and/or W0.sub.3 and/or As.sub.2 0.sub.3 and wherein the predominant crystal phase is selected from the group of a fluormica, a fluoramphibole, canasite, potassium and/o
4746363 Reaction sintered cermet May 24, 1988
Cermet body formed by reaction sintering at pressures ranging from subatmospheric to superatmospheric of admixed and shaped particulate exothermic reactants, which have maximum particle size substantially not greater than 150 .mu.m and can be elements, compounds, intermetallic compou
4744757 Fixed partial dentures and method of making May 17, 1988
This invention is concerned with preparing fixed partial dentures consisting of abutment crowns and pontics connected through male/female attachments and being sealed together by means of a joining medium. In the most preferred embodiment, the parts of the dentures are formed from ma
4742028 Optical and ophthalmic glasses May 3, 1988
This invention is concerned with a glass for optical and/or ophthalmic applications having an index of refraction between about 1.78-1.82, an Abbe number greater or equal to 31, and a density less than about 3.80 g/cm.sup.3 consisting essentially, expressed in terms of weight percent on
4741748 Heating oven for preparing optical waveguide fibers May 3, 1988
A heating oven for processing glass materials from which optical waveguide fibers are prepared is provided which comprises:(a) an elongated chamber for receiving the glass material to be processed; and(b) means for heating the chamber, said means comprising an elongated susceptor, the lo
4737966 Electric melter for high electrical resistivity glass materials April 12, 1988
An electric melting furnace is described for melting high electrical resistivity glass, such as E-glass, within a melting chamber surrounded by a relatively low electrically resistivity refractory, such as chromic oxide refractory, by utilizing interconnected peripherally positioned
4734388 Glass for cathode ray tube faceplates March 29, 1988
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:
4734118 Process to mold precision glass articles March 29, 1988
The present invention is directed to a four-step process for molding glass articles of high precision and excellent surface figure. A glass preform having an overall geometry closely approximating that of the desired final product is placed into a mold, the mold and preform are brought t
4731010 Extrusion die for forming thin-walled honeycomb structures March 15, 1988
An extrusion die for extruding a honeycombshaped structure having rectangular channels. The die is formed of a hard, rigid material, preferably metal, and includes a body plate and an abutting face plate. The outlet face of the body plate is brazed to the inlet face of the face plate
4726981 Strengthened glass articles and method for making February 23, 1988
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
4726831 Molten glass delivery and conditioning system February 23, 1988
A glass delivery system is disclosed which includes a molybdenum delivery pipe surrounded by molten glass and inductively heated by a water cooled induction heating coil surrounding the molybdenum pipe and spaced apart therefrom by means of refractory material.
4726827 Method and apparatus for producing an optical fiber preform February 23, 1988
A porous glass optical waveguide preform is formed by depositing a coating of glass particulate material on the lateral surface of a core which may be a porous glass body continuously produced by the axial deposition of glass particles. The core rotates and moves longitudinally in one
4725391 Method of extruding ceramic tube February 16, 1988
A method is disclosed for extruding thin-walled ceramic bodies. The method involves mixing into a homogenized batch a granular ceramic, a binder, a soluble oxidizing agent and a matrix precursor in amounts sufficient to provide a substantially water-free extrudable mixture. The batch is
4719187 Dense sintered bodies of nitride materials January 12, 1988
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 a
4719151 Laminated ceramic structure January 12, 1988
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
4719091 Preparation of mono-sized zirconia powders by forced hydrolysis January 12, 1988
Substantially spherical mono-sized particles of zirconia can be prepared by the forced hydrolysis of an aqueous solution of zirconyl chloride. A zirconyl chloride solution having a molarity up to about 0.4 is heated for at least 72 hours at a temperature of at least 95.degree. C. to gene
4718931 Method of controlling melting in a cold crown glass melter January 12, 1988
A method is set forth for controlling the height of batch material on the surface of a molten bath in a cold-crown or vertical melting furnace by measuring the level of the upper surface of the batch material, the level of the fusion line between the batch and bath, and the effective
4718929 Vapor phase method for making metal halide glasses January 12, 1988
A vapor phase method for making a metal halide material useful for the manufacture of an infrared transmitting optical waveguide fiber or other optical device, and the use of the method for making such a device, wherein a halogenated beta-diketonate of a metal to be incorporated in the
4715987 Method of treating phyllosilicates December 29, 1987
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 tra
4715801 Apparatus for high speed manifolding of honeycomb structures December 29, 1987
The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate fitler bodies and
4715679 Low dispersion, low-loss single-mode optical waveguide December 29, 1987
Disclosed is an optical waveguide fiber having a core surrounded by a layer of cladding material. The core is characterized in that it includes a region of depressed refractive index. The inner radius a.sub.i of this region is greater than zero, and the outer radius a.sub.o thereof is le
4715576 Apparatus for forming a flexible mask December 29, 1987
The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate filter bodies and
4714687 Glass-ceramics suitable for dielectric substrates December 22, 1987
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
4714488 Apparatus for producing an optical fiber preform December 22, 1987
A porous glass optical waveguide preform is formed by depositing a coating of glass particulate material on the lateral surface of a core which may be a porous glass body continuously produced by the axial deposition of glass particles. The core rotates and moves longitudinally in one
4713913 Air slide positioning for grinding spindles December 22, 1987
A machine for grinding the cavity in a mold for optical lenses has a spherical grinding tool which is precisely positioned with respect to the center line of a rotary table upon which it is mounted by air slides, which air slides move the tool in orthogonal directions. The carriages of
4712156 Stabilized ferroelectrics December 8, 1987
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,
4711860 Modified cordierite glass ceramic composite December 8, 1987
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 the
4710430 Colored photochromic glasses and method December 1, 1987
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 ba
4710217 Bonding glass-ceramic dental products December 1, 1987
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
4707458 Glass-ceramics suitable for ring laser gyros November 17, 1987
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
4704151 Method for drawing fiber optic coupler November 3, 1987
A low loss fiber optic coupler is fabricated by forming a coupler preform having a plurality of spaced glass cores extending longitudinally through a matrix of glass having a refractive index lower than that of the cores. The coupler preform is heated and stretched by first pulling means
4702041 Prevention of foreign material intrusion in an air slide for machines October 27, 1987
A machine for grinding the cavity in a mold for optical lenses has a spherical grinding tool which is precisely positioned with respect to a predetermined reference by air slides which move the tool in orthogonal directions. The carriages of the air slides move relative to center rails.
4699831 Electrically insulating body October 13, 1987
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

 
 
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