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| Number | Title | Issue Date |
| 7900478 | Method of manufacturing an ultrathin optical element The present invention provides an ultra-thin high-precision glass optic and method of manufacturing the same. The optic has an axial thickness that is less than 1,000 microns. A pattern and/or coating is disposed on a surface of the optic to provide attenuation of l... | 03/08/2011 |
| 7814765 | Float glass process for making thin flat glass and thin flat glass substrate made with same The thin flat glass substrate, especially for display engineering, has a thickness of less than 1.5 mm, a length of at least 1800 mm, a width of at least 1800 mm and a difference between a smallest thickness and largest thickness of less than 50 μm. The float glass... | 10/19/2010 |
| 7323426 | High strain point glasses A family of glasses from the SiO2—Al2O3—P2O5 ternary system exhibiting high strain point, transparency, and low coefficient of thermal expansion. The glasses have the following composition, expressed in mol ... | 01/29/2008 |
| 7299657 | Method of making high strain point glass A method of forming a glass sheet includes obtaining a preform generated from a glass composition and conveying the preform through a channel having a temperature that decreases along a length of the channel to form a glass sheet having a predetermined width and thi... | 11/27/2007 |
| 7122242 | Wedge shaped glass and methods of forming wedged glass A glass sheet includes a first edge, an opposing, second edge, and an intermediate location between the first edge and second edge. The glass sheet has a first portion extending between the first edge and the intermediate location and a second portion extending betw... | 10/17/2006 |
| 7107793 | Lithium-aluminosilicate glass ceramic with high keatite content and structural member made thereof A lithium-aluminosilicate glass ceramic is transformed by a suitable heat treatment into a glass ceramic comprising at least 80 vol.-% of keatite mixed crystals. This may be utilized for the preparation of optical or mechanical high-precision parts having a high tem... | 09/19/2006 |
| 7059154 | Method for making float glass, implementing device and resulting products The present invention relates to a float process for manufacturing glass sheets, in which molten glass is poured onto a liquid support denser than the glass and then the continuous ribbon which forms is advanced toward the downstream end, this process being characte... | 06/13/2006 |
| 6708526 | Method for manufacturing a glass sheet having an uneven surface A heat-resistant pipe is arranged so as to traverse below a glass ribbon in a float bath of molten tin, and bubbles emanate from the heat-resistant pipe, thereby making the bottom surface (which is in contact with the tin) uneven. Alternatively, the bottom surface i... | 03/23/2004 |
| 6467309 | Method for manufacturing a glass sheet having an uneven surface A heat-resistant pipe is arranged so as to traverse below a glass ribbon in a float bath of molten tin, and bubbles emanate from the heat-resistant pipe, thereby making the bottom surface (which is in contact with the tin) uneven. Alternatively, the botto... | 10/22/2002 |
| 6089043 | Method for producing glass sheets using flotation The present invention relates to a process for the manufacture of glass sheets, according to which molten glass is poured into a liquid support which is denser than the glass to form a glass strip. The glass strip is drawn and is accompanied in its moveme... | 07/18/2000 |
| 6003337 | Method and apparatus for producing a sheet glass A method and apparatus for producing a sheet glass includes pouring a molten glass into a bathtub containing a molten metal so that it will form a molten glass stream having a constant width in a high temperature zone on the molten metal bath. The molten ... | 12/21/1999 |
| 5948133 | Method for holding an edge of a molten glass flow A method for holding an edge of a molten glass flow, comprising forming a molten glass flow by continuously feeding molten glass on a bath surface of molten metal contained in a vessel, holding an edge of the molten glass flow in a width direction thereof... | 09/07/1999 |
| 5328495 | Float-bath ribbon-width control method and system The width of glass ribbon at the hot end of a float bath is controlled to a constant value by raising and lowering a tweel for adjusting the flow of molten glass blank from a smelting furnace to the float bath. The controlled value of the tweel is obtaine... | 07/12/1994 |
| 5055122 | Method of controlling feed of molten glass onto molten metal bath Concerning the manufacture of sheet glass by the float process using, as a glass melting and refining tank furnace, a common regenerative furnace having two oppositely arranged sets of burners which are periodically alternately operated with a temporary i... | 10/08/1991 |
| 4940479 | Method for manufacturing float glass A direct current magnetic field is applied to a molten metal bath to control the movement of molten metal. A glass ribbon is formed on the molten metal bath to have a predetermined thickness and is moved on the surface of the molten metal bath controlled ... | 07/10/1990 |
| 4746347 | Patterned float glass method Patterned float glass is produced without distorting patterns imparted to the surface by forming the glass by a process that avoids deformation of the glass subsequent to the pattern imparting step.... | 05/24/1988 |
| 4741749 | Vertical delivery arrangement for float glass process Delivery of molten glass to a flat glass forming operation carried out as a substantially free-falling vertical stream. The glass may be received in a first chamber in a relatively deep and narrow reservoir, from which it flows to a wider chamber, from wh... | 05/03/1988 |
| 4732601 | Apparatuses for producing plate glasses An apparatus for producing a plate glass which comprises (A) a melter for storing a molten glass material, (B) a molding portion for molding the molten glass material from the melter into a plate, (C) a temperature adjusting tank located between the melter and the ... | 03/22/1988 |
| 4676818 | Edge gripping means for attenuating float glass In a float glass process, traction of an attenuating device on the glass ribbon is enhanced by a freely rotating member forced against the underside of the ribbon. The member is preferably a carbon cylinder, and the force is regulated from outside the for... | 06/30/1987 |
| 4572731 | Pinch means for attenuating float glass and method of using same In a float glass process, traction of an attenuating device on the glass ribbon is enhanced by a member buoyantly engaging the underside of the ribbon.... | 02/25/1986 |
| 4460397 | Float glass method and apparatus with enhanced lateral traction for attenuation A cylindrical ribbon engaging device is rotated about an axis of rotation substantially parallel to the direction of ribbon flow to positively exert lateral forces to an elongated substantial continuum of the marginal edge portion of the ribbon. Provision... | 07/17/1984 |
| 4445924 | Auxiliary side heater for a float glass forming chamber In a float glass forming chamber, concentrated heat is applied to edge portions of the glass ribbon being formed by means of portable heating elements carried by side seal members.... | 05/01/1984 |
| 4440559 | Apparatus for sensing a glass ribbon edge and method of use Nip width of a glass ribbon advancing on a molten metal bath is determined by repeatedly, at selected intervals, advancing an edge detector from a first home position toward and into contact with the ribbon edge and then back to a second home position. Th... | 04/03/1984 |
| 4439222 | Method of producing thin sheet glass of high quality by float process A method of producing thin sheet glass by the float process, in which molten glass is formed into a thin layer on the surface of molten metal by making molten glass pass through a vertically narrow gap given by a sluice wall which extends above and transv... | 03/27/1984 |
| 4402722 | Cooling arrangement and method for forming float glass In a float glass forming chamber, the effects on the glass of sharp temperature gradients associated with coolers are modulated by high mounting of coolers so as to improve the distortion quality of the glass. Preferably, an elevated roof section is provi... | 09/06/1983 |
| 4395272 | Pressure sizing of float glass A continuous ribbon of glass is reduced in thickness while supported on molten metal by imposing super-atmospheric pressure over a molten glass layer in a chamber where the glass is maintained in contact with the side walls of the chamber. One aspect feat... | 07/26/1983 |
| 4375370 | Thermal control in a method of bidirectionally attenuating glass in a float process Optical quality of float glass is improved by attenuating longitudinally prior to attenuating laterally and by carrying out each attenuation step within specified temperature ranges.... | 03/01/1983 |
| 4361431 | Method of forming thin sheet glass by float process In a method of forming a thin sheet glass by the float process, a thin layer of molten glass is formed by making molten glass flow through a sluice formed on the surface of a molten metal bath, and the glass layer is drawn lengthways of the bath to furthe... | 11/30/1982 |
| 4361430 | Method of and apparatus for selectively heating molten glass stream marginal edges Apparatus for selectively heating marginal edge portions of a stream of molten glass includes at least two independent heating elements presenting a substantially planar heating face toward the marginal edge of a stream of molten glass flowing in close pr... | 11/30/1982 |
| 4354866 | Method of bidirectionally attenuating glass in a float process with edge cooling Optical quality of float glass is improved by attenuating longitudinally prior to attenuating laterally and by providing cooled marginal edge portions of the glass ribbon during lateral attenuation.... | 10/19/1982 |
| 4345929 | Method of and apparatus for vertically positioning devices in glass forming chamber A method of vertically positioning ribbon engaging devices in a glass forming chamber includes suspending a contact member within the chamber a known vertical distance relative to the device, moving the contact member toward the surface of a pool of molte... | 08/24/1982 |
| 4343642 | Method for attenuating float glass The marginal edge portions of an accelerating ribbon of float glass are engaged by a plurality of opposed pairs of attenuating devices, each pair exerting substantially equal forces. The pairs of attenuating devices are positioned longitudinally adjacent ... | 08/10/1982 |
| 4342583 | Apparatus and method for attenuating floating glass ribbon A method of and apparatus for attenuating a ribbon of float glass in a temperature region below 1500° F. (815° C.) to diminish undesirable longitudinally oriented optical distortions. A cylindrical ribbon engaging device is rotated about an axis of rota... | 08/03/1982 |
| 4337076 | Ribbon edge detector and system for metering flow of molten glass A pair of glass ribbon edge detectors each have a power source connected to a carbon probe suspended over the molten metal bath of a glass forming chamber and to the molten metal bath to form a pair of capacitors. The voltage output of each capacitor has ... | 06/29/1982 |
| 4316733 | Apparatus and method for attenuating glass ribbon An edge roll apparatus for engaging the marginal edge portion of a hot ribbon of glass, including a body portion and circumferentially positioned teeth. The teeth are shaped to establish at least a 90° angle between the surface of the glass and the leadi... | 02/23/1982 |
| 4306898 | Glass ribbon width control method in float process In a float process of flat glass production, the width of glass ribbon is controlled by regulating a tweel to manipulate the rate of supplying a molten glass through the tweel onto a molten metal bath. To minimize a fluctuation of the glass ribbon width, ... | 12/22/1981 |
| 4305745 | Method of attenuating glass in a float process Optical quality of float glass is improved by attenuating longitudinally prior to attenuating laterally; and by providing extended residence time prior to attenuating.... | 12/15/1981 |
| 4299612 | Apparatus and method for attenuating float glass An edge engaging device for attenuating a ribbon of float glass having a single elongated barrel and a plurality of operatively interconnected edge rolls secured near one end thereof. The edge rolls are rotatable about a generally horizontal axis angularl... | 11/10/1981 |
| 4218231 | Cooling of edge stretching rollers for use in making flat glass An edge roll machine for contacting a marginal portion of a body of glass being formed into a continuous sheet of glass while floating on molten metal is provided with a glass-engaging edge roll having an internal fluid coolant distributor having spiral v... | 08/19/1980 |
| 4217125 | Method and apparatus for manufacturing flat glass on a molten metal bath Flat glass is manufactured by the float process and is attenuated to a thickness in the range 1.5 mm to 5 mm. In an attenuation zone of the bath the viscosity of the glass is controlled to regulate attenuation of the float ribbon to a desired width and th... | 08/12/1980 |
