Class 65/439 - Producing hollow fibers or tubular preforms

Subclass of Class 65 - Glass manufacturing
Definition: Processes wherein the glass fiber or tubular preform produced
No. of patents: 32
Last issue date: 09/04/2007

Number	Title	Issue Date
7266275	Nonlinear optical fibre method of its production and use thereof An optical fiber having a longitudinal direction and a cross-section perpendicular thereto, said fiber in a cross-section comprising: (a) a core region (11) having a refractive index profile with a highest refractive index nc, and (b) a cladding re...	09/04/2007
7155097	Fabrication of microstructured fibres A preform for a microstructured fibre or a part for a preform for a microstructured fibre. The preform or part has a length in the longitudinal direction and a cross section perpendicular thereto, and includes a rod arranged at the centre of the preform or part, wit...	12/26/2006
7118696	Method of forming light dispersing fiber and fiber formed thereby Polymeric structures produced with a controlled number and distribution of small, closed cells. The polymeric structures are characterized by an opaque, whitening appearance attributed, at least in part, to the distribution of closed cells and thus, at least in part...	10/10/2006
7058243	Optical fiber sensor having a sol-gel fiber core and a method of making A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cl...	06/06/2006
6997016	Method and apparatus for manufacturing glass tube Stress exerted on an inner or outer circumferential side of a glass tube 6 is controlled when a glass material 3 is heated and softened by a heating element 41 provided around the glass material 3 and a piercing plug 31 is relative...	02/14/2006
6719601	Fluorescent lamp and method for manufacturing the fluorescent lamp A fluorescent lamp capable of fully securing a portion for containing a mercury amalgam pellet and reliably preventing the mercury amalgam pellet from moving toward the inside a discharge tube, and a method for manufacturing the fluorescent lamp. The fluorescent lam...	04/13/2004
6640588	Method of making microporous structure defined by a multiplicity of singular channels A microporous structure can be formed from ductile material such as glass into an axially extended outer wall surrounding a plurality of singular micro-passages surrounded by the outer wall to provide an open area that extends continuously over the length...	11/04/2003
6553789	Quartz glass plates with high refractive index homogeneity A method produces homogenous quartz glass plates without streaks. The method is applied to starting quartz glass body which has an X--X geometrical axis and good refractive index homogeneity in its central area, and a refractive index homogeneity decreasi...	04/29/2003
6499886	Method of manufacturing glass parts for connection of optical fibers, method of manufacturing mother glass to produce glass parts, and glass parts for connection of optical fibers A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a...	12/31/2002
6418757	Method of making a glass preform A method of making a glass article such as an optical waveguide preform is disclosed. The method comprises drawing a rod in at least two steps. In the first step an elongated, consolidated preform having an aperture therethrough is drawn to a reduced diam...	07/16/2002
6113722	Microscopic tube devices and method of manufacture The invention comprises devices composed of at least one microscopic hollow tube having a wall of single or multiple layers with a thickness of at st one nanometer and a diameter of at least 5 nanometers. The walls of the tubes can be formed from a wide...	09/05/2000
5814122	Method of making hollow high temperature ceramic superconducting fibers A hollow high temperature ceramic superconducting fiber (10, 100), a process for making the hollow fibers and an apparatus for carrying out the process are provided. The apparatus functions to simultaneously draw a molten superconducting material (16) and...	09/29/1998
5785729	Method for manufacturing large-sized quartz glass tube A method for fabricating a large-sized primary treated quartz glass tube by perforating a cylindrical quartz glass mother material by a hot carbon drill press-in-process followed by etching and washing. The large-sized primary treated quartz glass tube is...	07/28/1998
5786082	Loose-fill insulation having irregularly shaped fibers A loose-fill insulation product having irregularly shaped glass fibers is provided. The loose-fill insulation product shows improved recovery, lower thermal conductivity and requires lower product densities than prior art loose-fill insulation at equivale...	07/28/1998
5776223	Method of making shaped fibers In a method of making a shaped fiber, a stream of fiberizable material is provided with an original shape and a void fraction from 20% to 80%. The void fraction can be provided by forming a hollow stream, a porous stream or a significantly shaped stream. ...	07/07/1998
5743932	Method of making an insulation product from hollow fibers A method of making an insulation product of hollow fibers whereby molten insulation material is centrifuged through a plurality of orifices and gas is directed into the molten insulation material through a plurality of gas conduits, wherein each gas condu...	04/28/1998
5674307	Hollow mineral fibers using rotary process In a method for producing hollow mineral fibers such as glass fibers, molten glass is supplied to a rotating glass spinner having a peripheral wall. The spinner rotates so that molten glass is centrifuged through a first tube positioned at least mostly in...	10/07/1997
5529594	Method for producing mineral fibers having gaseous occlusions The mineral fiber forming apparatus having electrodes for heating heat softenable mineral material to form a molten mineral mass is disclosed. Organically-coated glass fiber scrap and cullet are supplied to the vessel providing the heat softenable mineral...	06/25/1996
5011566	Method of manufacturing microscopic tube material A sacificial fiber method to fabricate straight, curved, or coiled tubes as small as 1 micron (0.000004 inches) in diameter with wall thicknesses starting at less than 0.01 microns. These tubes can be made from many of the materials that can be applied to...	04/30/1991
4853001	Porous inorganic siliceous-containing gas enriching material and process of manufacture and use A hollow, porous, silica-rich fiber and a process for separating at least one gas from a gaseous mixture utilizing the hollow, porous, silica-rich fiber result in gas separations with good permeability and good selectivity. The hollow, porous, silica-rich...	08/01/1989
4846864	Method and apparatus for producing hollow glass filaments A feeder for the production of hollow glass filaments is comprised of tip assemblies wherein a tube positioned in the stream defining member is in communication with the gas in the fiber forming region immediately below the dischrge wall to form a gas fil...	07/11/1989
4842620	Process of gas enrichment with porous siliceous-containing material A hollow, porous, silica-rich fiber, a process for producing same, and a process for enriching at least one gas from a gaseous mixture utilizing at least one fiber to result in gas separations with good permeability and good selectivity. The fiber is non-...	06/27/1989
4818264	Multicapillary gas chromatography column A multicapillary gas chromatography column comprising a bundle of single capillary columns each of which have essentially the same internal diameter and which are coated with essentially the same thickness of essentially the same stationary phase so that ...	04/04/1989
4786303	Method of fabricating a glass nozzle array for an inkjet printer The method of this invention comprises first forming an assembly of a number N of cored glass fibers, separated by a number M of solid glass fibers. After a row of such alternated cored and solid glass fibers is assembled, a uniform pressure is applied to...	11/22/1988
4608071	Method for reducing diameter of a glass rod or tube by drawing The invention provides an efficient and accurate method for reducing the diameter of a rod or tube of glass, e.g. fused quartz glass rod as a base material of optical fibers, by drawing when the rod or tube is heated and in a softened and plastically defo...	08/26/1986
4590492	High resolution optical fiber print head A high resolution printing head for a line printer using photographic recording medium has a plurality of modules connected to form a two dimensional printing array. Each module has three fiber optic ribbons bonded together to form a staggered array of fi...	05/20/1986
4526597	Gas injection in fiber forming A method and apparatus for forming fibers includes a spinner having a porous member positioned therein in a region normally covered by molten glass, and means for supplying a gas to the porous member under pressure sufficient to cause introduction of the ...	07/02/1985
4521236	Method for preparation of porous glass film There is provided a method for preparation of porous glass films, preferably in the form of a hollow filament, comprising heating glass films, formed from sodium borosilicate glass having a composition which can be phase-separated by heat-treatment into a...	06/04/1985
4078909	Method for the production of thread-like capillaries Thread-like capillary tubes are formed by spinning molten glass material through an annular orifice, blowing a gas centrally into the tube issuing from the orifice, drawing the gas filled tube away from the orifice and controlling the flow rate and pressu...	03/14/1978
4050915	Ferrule and use thereof for cooling a melt spun hollow glass fiber as it emerges from a spinnerette An improvement in the process of melt spinning thin walled, hollow fibers from relatively low melting glasses results if cooling of the emerging fiber is accomplished by use of a thin layer of gas to transfer heat from the fiber to a ferrule which fits cl...	09/27/1977
4042359	Process for production of porous glass membrane tubes The invention relates to a process for producing a tubular glass membrane with wall thicknesses between 5 and 30 microns and reproducible pore sizes between 11 A and 50 A. Alkali borosilicate glass is drawn into discrete hollow tubes and immediately coole...	08/16/1977
4039718	Hollow glass filaments sealed at both ends their production and their use as matrix reinforcing materials Novel glass fiber strands of relatively short lengths are disclosed in which the strands are formed of a consolidated bundle of glass filaments. The filaments making up the consolidated strand have external diameters of 0.0003 to 0.003 inch (0.0016 to 0.0...	08/02/1977

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Class 65/439 - Producing hollow fibers or tubular preforms