Glass Applied In Powdered (i.e., Frit) Form Patents (Class 65/59.5)
  • Patent number: 8309784
    Abstract: The present invention relates to a process for the manufacture of a glass frit for the containment by vitrification of a material comprising at least one oxidizable or reducible chemical species, and also to a process for the containment of said material by vitrification. The process for the manufacture of the glass frit comprises a step of incorporating into a raw glass frit at least one redox couple, the nature and the amount of which make it possible to maintain said at least one chemical species in its oxidized or reduced state. The containment process comprises mixing and hot melting the resulting glass frit and the material to be contained. The present invention makes it possible to optimize the containment of pollutants such as radionucleides, metals and metalloids. The material may be nuclear waste or a material derived from the incineration of household refuse.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: November 13, 2012
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Olivier Pinet, Thierry Blisson, Agn├Ęs Grandjean, Sophie Schuller
  • Patent number: 7716948
    Abstract: A fused glass crucible includes a collar of doped aluminum silica that defines uppermost and outermost surfaces of the crucible. The melt line that defines the surface of molten silicon in the crucible may be substantially at the lower end of the collar or slightly above it. Crystallization of the collar makes it hard and therefore supports the remaining uncrystallized portion of the crucible above the melt line. The melt line may also be below the lower end of the collar, especially if the melt is drawn down or poured early in the process. Because there is little or no overlap or because the overlap does not last long, the doped aluminum collar is not damaged by the heat of from the melt.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: May 18, 2010
    Assignees: Heraeus Shin-Etsu America, Inc., Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Katsuhiko Kemmochi, Yasuo Ohama
  • Patent number: 7357839
    Abstract: The present invention provides an SOI wafer having at least an SOI layer, in which a plain orientation of the SOI layer is off-angled from {110} only in a direction to <100>, and an off-angle is from 5 minutes to 2 degrees, and a method of producing an SOI wafer comprising at least bonding a base wafer and a bond wafer consisting of a silicon single crystal, and forming an SOI layer by thinning the bond wafer, wherein the bond wafer is used where a plain orientation thereof is off-angled from {110} only in a direction to <100>, and an off-angle is from 5 minutes to 2 degrees. Thereby, there can be provided an SOI wafer having both high uniformity of film thickness and good micro-roughness to be suitable for fabricating high speed devices, and provided a method of producing the SOI wafer.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: April 15, 2008
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Kiyotaka Takano, Hitoshi Tsunoda
  • Patent number: 6974517
    Abstract: An apparatus (10) includes a digital micromirror device (16) disposed within a housing (11) that has an opening (13) hermetically sealed by a lid (17). The lid includes a radiation transmissive window (22) with peripheral edges fixedly coupled by an annular sealing section (23) to a metal frame (21). The sealing section engages a frame surface oxidized in a wet nitrogen furnace. The sealing section melts at a temperature lower than the window or frame. The sealing section includes two center rings (151, 152) made of sealing glass that are respectively bonded to the window and frame and to each other. The sealing section also includes inner and outer rings (152, 157, 158) made of sealing glass and disposed on opposite sides of the center rings to protect the center rings from environmental factors.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: December 13, 2005
    Assignee: Raytheon Company
    Inventor: Mark B. Hanna
  • Patent number: 6837075
    Abstract: A glass fixative composition for bonding glass materials to non-glass materials is provided. The fixative composition is selected for its thermal expansion coefficient, its viscosity, its adhesion to glass, melting point, and bond strength. The glass fixative is in particular useful for bonding optical fibers to metallic materials such as Kovar. The low melting point of the glass fixative enables localized heating methods to be used, in particular, as Kovar is a ferromagnetic material, induction heating can be used to form a bond. The bond formed provides a compressive joint which enables the fiber to be hermetically fixed in position.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: January 4, 2005
    Assignee: Bookham Technology, plc.
    Inventors: Kenneth Snowdon, Timothy J Durrant, Richard Wilmshurst, Christopher G Tanner
  • Publication number: 20040226317
    Abstract: In order to pull semiconductor single crystals by the Czochralski method, quartz glass crucibles are used which require support crucibles having high temperature capabilities. Such support crucibles may be made of various materials, in which case graphite materials, carbon fiber-reinforced carbon (CFC), combinations thereof or carbon materials coated with silicon carbide (SiC) are used. The working life of a CFC support crucible can be extended by a partial thickening of the support crucible walls affected by corrosion processes.
    Type: Application
    Filed: May 12, 2004
    Publication date: November 18, 2004
    Applicant: SGL Carbon AG
    Inventor: Dieter Kompalik
  • Patent number: 6815013
    Abstract: A new glass lining application method enables stable, uniform glass lining layers to be applied to large glass-lined instruments composed of a stainless base material, the method including forming a thermal spray treatment layer by applying a thermal spray treatment to a surface of a stainless base material using a thermal spray material selected from a group composed of a stainless material identical to the base material, Ni metal, Cr metal, Fe metal, Co metal, Ni—Cr alloys, and Fe—Cr alloys, then forming a glass lining layer on the thermal spray treatment layer by means of a glass lining heat treatment using a ground coat and a cover coat, a surface roughness Rz of the thermal spray treatment layer being within a range from 5 to 100 &mgr;m, and an open pore diameter being within a range from 3 to 60 &mgr;m.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: November 9, 2004
    Assignee: Ikebukuro Horo Kogyo Co., Ltd.
    Inventors: Yoshihiro Iizawa, Masahiro Shirasaki, Jyunji Ono
  • Patent number: 6641663
    Abstract: A silica glass crucible is disclosed comprising a barium-doped inner wall layer. The crucible is made by introducing into a rotating crucible mold bulk silica grain to form a bulky wall. After heating the interior of the mold to fuse the bulk silica grains, an inner silica grain, doped with barium, is introduced. The heat at least partially melts the inner silica grain, allowing it to fuse to the wall to form an inner layer. The inner layer of the crucible crystallizes when used in a CZ process, extending the operating life of the crucible.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: November 4, 2003
    Assignee: Heracus Shin-Estu America
    Inventors: Katsuhiko Kemmochi, Robert Mosier, Paul Spencer
  • Publication number: 20030172678
    Abstract: A new glass lining application method enables stable, uniform glass lining layers to be applied to large glass-lined instruments composed of a stainless base material, the method including forming a thermal spray treatment layer by applying a thermal spray treatment to a surface of a stainless base material using a thermal spray material selected from a group composed of a stainless material identical to the base material, Ni metal, Cr metal, Fe metal, Co metal, Ni—Cr alloys, and Fe—Cr alloys, then forming a glass lining layer on the thermal spray treatment layer by means of a glass lining heat treatment using a ground coat and a cover coat, a surface roughness Rz of the thermal spray treatment layer being within a range from 5 to 100 &mgr;m, and an open pore diameter being within a range from 3 to 60 &mgr;m.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Inventors: Yoshihiro Iizawa, Masahiro Shirasaki, Jyunji Ono
  • Patent number: 6492585
    Abstract: A thermoelectric device operable at below ambient, ambient or high temperatures and a method of fabricating the same is provided. The thermoelectric device is made of first and second ceramic plates. An array of thermoelectric elements are coupled between the plates with metal filled glass. The metal filled glass is capable of attaching the thermoelectric elements to the plates, as well as electrically and thermally coupling the thermoelectric elements to the plates. The thermoelectric devices are fabricated by applying metal filled glass to a plate, positioning thermoelectric elements in the metal filled glass in an electrically serpentine manner and curing the metal filled glass to affix the plates and the thermoelectric elements together.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: December 10, 2002
    Assignee: Marlow Industries, Inc.
    Inventors: John M. Zamboni, Christopher S. Bettis
  • Patent number: 6474103
    Abstract: The method comprises a preheating step to heat a metal base 10 entirely, a pre-spraying step to for a glass pre-coating 13 by pre-spraying a glass material onto the surface of the preheated base, a main-spraying step to form a glass coating 14 by additionally heating the glass pre-coating formed in the previous step and main-spraying a like glass material onto the surface.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: November 5, 2002
    Assignee: Kabushiki Kaisha Nakashima
    Inventor: Mikio Nakashima
  • Patent number: 6321569
    Abstract: A method for forming a back panel for a plasma display includes preparing a green ceramic tape having a temperature coefficient of expansion (TCE) which matches the TCE of a metal core. Barrier ribs are formed on the back panel by embossing or scribing the green ceramic tape. The formed green ceramic tape is then bonded to the metal core. Finally, the bonded formed green ceramic tape and the metal core are cofired to form the back panel.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 27, 2001
    Assignee: Sarnoff Corporation
    Inventors: Attiganal Narayanswamy Sreeram, Robert L. Quinn, Ashok Narayan Prabhu