Class 65/401 - Extruding

Subclass of Class 65 - Glass manufacturing
Definition: Processes of forming an optical fiber, waveguide, or preform
No. of patents: 37
Last issue date: 02/14/2006

Number	Title	Issue Date
6997015	EUV lithography glass structures formed by extrusion consolidation process The invention discloses a method for forming substantially striae-free glass substrates that are suitable for optical applications, including use in forming optical elements or structures such as mirrors and platen stage structures that can be used, for example, in ...	02/14/2006
6917741	Methods for manufacturing microstructured optical fibers with arbitrary core size The present invention provides methods for manufacturing microstructured optical fibers having an arbitrary core size and shape. According to one embodiment of the invention, a method of fabricating a photonic band gap fiber includes the steps of forming an assembly...	07/12/2005
6826339	Electromagnetically induced transparent (EIT) photonic band-gap fibers An electromagnetically induced transparent (EIT) photonic band-gap fiber (PBG). The EIT-PBG combines the pass gap and band gap properties of a photonic band gap (PBG) fiber with the transparency control of mediums exhibiting EIT effects, allowing the formation of va...	11/30/2004
6758067	Methods for producing optical fiber by focusing high viscosity liquid The invention is directed to the production of optical fibers from optical fiber preforms using flow physics. The present methods provide for the “drawing” of an optical fiber preform using focusing of the preform by a surrounding fluid, e.g. a heated gas. ...	07/06/2004
6739155	Quartz making an elongated fused quartz article using a furnace with metal-lined walls A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, at least a portion of the inner surface includes a barrier layer comprised ...	05/25/2004
6715317	Process and apparatus for the production of a cylindrical component of glass A glass composition to be softened is fed to a heating zone and is shaped continuously into a cylindrical component in a deformation zone, and the cross-sectional geometry of the component is determined. A feed device, a heating device, and a take-off device are pro...	04/06/2004
6521156	Apparatus and method for handling extruded tubes A tube take-up apparatus is provided to handle a length of freshly extruded tube. The apparatus includes an elongated housing in which a pair of parallel, spaced-apart rollers extend lengthwise in a position just below the extruded tubing. The housing is ...	02/18/2003
6444133	Method of making photonic band gap fibers A method is provided for making a photonic band gap fiber including the steps of etching a preform and then drawing the preform into a photonic band gap fiber. Glass tubes are bundled and then formed into a photonic crystal perform having a number of pass...	09/03/2002
6260388	Method of fabricating photonic glass structures by extruding, sintering and drawing Disclosed is a method of making a photonic crystal using a combination of extruding and drawing techniques. The method is contemplated as being capable of producing both two and three dimensional crystals due to the maturity and diversity of extruding and...	07/17/2001
6260387	Method for fabricating glass preforms for molding optical surfaces in glass elements A method for making preforms for use in a glass lens molding process and molding lenses is disclosed. A glass rod is formed preferably by dipping a bob into a homogeneous melt of a predetermined optical glass, maintaining the temperature of the homogeneou...	07/17/2001
6250112	Method of controlling an extrusion of glass to make an optical fiber A double crucible fiber fabrication system employing a rod to control flow of the core material to produce a core of desired diameter. The rod fits closely within the inner crucible and moves at a speed necessary to produce a core material flow rate which...	06/26/2001
5900036	Multi-cylinder apparatus for making optical fibers, process and product A vertically disposed apparatus used to make core-clad optical fibers inces an inner elongated cylinder removably closed at the top and provided at the bottom with an inner exit port of a smaller diameter than the inner cylinder and an outer cylinder, di...	05/04/1999
5763081	Glass body for optical fiber method of selecting the same optical fiber and method of making thereof A glass body for optical fiber containing GeO2 --SiO2 glass in a core portion thereof, in which the GeO2 --SiO2 glass has an absorbance at 5.16 eV of at least 1/mm but not higher than 2.5/mm or in which concentr...	06/09/1998
5609665	Method of making optical fiber with low melting glass core The disclosed method of making a mixed glass optical fiber exemplarily comprises providing a high-silica tube, and causing molten non-high silica glass to flow into the bore of the tube by application of a pressure differential. In order to prevent cracki...	03/11/1997
5471553	Multicore hollow optical fiber and a method for preparation thereof The present invention relates to a multicore hollow optical fiber comprising a hollow central part and a plastic peripheral part, more particularly, a multicore hollow optical fiber having a cross-section of the peripheral part wherein (a) an islands-in-s...	11/28/1995
5317657	Extrusion of polymer waveguides onto surfaces A waveguide structure is directly extruded onto a surface from a nozzle placed a predetermined distance above the surface and which is moved relative to the surface, preferably by means of a translation table. The predetermined distance is preferably main...	05/31/1994
5314520	Method for manufacturing optical fiber preform A method for manufacturing a preform having steps of obtaining a plastic material by kneading silica powder, a binder, water, and a surfactant, and obtaining a porous preform by extrusion-molding the plastic material. According to this method, a porous pr...	05/24/1994
5308371	Method of forming fluoride glass fiber preform A method of forming a fiber glass preform includes the steps of: (a) pouring a cladding glass into a mold; (b) pouring a core glass on a flat horizontal upper surface of the cladding glass so as to form a united glass body having the core glass and the cl...	05/03/1994
5185021	Method of manufacturing preform for nonoxide glass fiber In a method of manufacturing a preform for a nonoxide glass fiber, cladding and core glass materials are placed in a cylinder of an extrusion apparatus such that ground end faces of the respective cladding and core glass materials are in contact with each...	02/09/1993
5182790	Infrared optical fiber and a method of manufacturing the same An infrared optical fiber is provided which includes silver halide polycrystals having a composition ratio of silver chloride and silver bromide in the range of 30 to 70 percent by weight of silver chloride, and having an average grain size of 5 μm or le...	01/26/1993
5169421	Method of manufacturing silica glass optical waveguide preform An extruding apparatus having at least two independent inlet ports, one outlet port communicating with the inlet ports, and at least two passages connecting the inlet ports with the outlet port, in which a section of a joint portion of the passages has a ...	12/08/1992
5151306	Methods of coating elongated strand material In order to coat successive increments of length of an elongated strand material such as an optical fiber (22), for example, with a marking material, for example, a liquid coating material (40) is circulated through an input section (85) into an inner cha...	09/29/1992
5064577	Method of spinning optical fibers A method of forming an optical fiber defining an axis, the fiber having a dipolar dopant wherein a substantial number of the dipoles of the dopant are oriented in essentially the same direction along the axis of the fiber; the method comprising the steps ...	11/12/1991
4978376	Crystalline optical fiber and its method of manufacture A crystalline metal halide optical fiber having a two or a three layer structure is provided. The core consists of relatively small crystals. A crust surrounds the core and has the same composition but consists of relatively large crystals. Optionally, an...	12/18/1990
4816051	Method of manufacturing glass bodies by means of extrusion A method of manufacturing glass bodies, in which the starting material for the glass body, being an extrusion mass consisting of microdispersed SiO2 particles, a binder and a dispersing liquid, is used to form a porous green body by extrusion, ...	03/28/1989
4685946	Method for the manufacture of glass bodies Method and equipment for the manufacture of glass bodies wherein a porous green body is formed by extrusion from the starting material for the glass body in the form of a plastic mass and this green body is then purified and sintered, the plastic mass bei...	08/11/1987
4682995	Method for the manufacture of glass bodies by extrusion Method and equipment for the manufacture of glass bodies wherein a porous green body is formed by extrusion from the starting material for the glass body in the form of a thixotropic suspension and this green body is then purified and sintered, during whi...	07/28/1987
4680047	Method for the manufacture of glass bodies A method for the manufacture of glass bodies, in which a thixotropic suspension, being the starting material for the glass body, is used to form a porous green body which is subsequently purified and sintered, the starting material being liquefied in a mo...	07/14/1987
4661136	Process of fabricating an elongated glass body particularly a preform for optical waveguides For fabricating porous bodies from a glass starting material, particularly in connection with the fabrication of an optical waveguide preform, it is proposed to fill powdery glass starting material under a pre-compaction into a compression mold, and to co...	04/28/1987
4547210	Process for producing a glass body Preforms for drawing into glass fibers are relatively quickly produced by extruding filaments or tapes from polysiloxanes and/or heteropolysiloxanes and curing such filaments. A cylindrical wound body is produced from such cured filaments by winding such ...	10/15/1985
4501601	Process for manufacturing glass fiber optical waveguides In the manufacture of optical fiber having a core of a core material and a cladding of a cladding material by drawing the fiber from an optical glass preform, the preform is manufactured by reacting a first plurality of initial reactants in their vapor st...	02/26/1985
4451116	Infrared transmitting fiber optical waveguide extruded from halides of the metal thallium and the method of preparation There is disclosed a fiber optic waveguide which is particularly suited for infrared radiation transmission at extended wavelengths. The core of the waveguide is fabricated from heavy ionic compounds selected from metal halides in order to achieve such ex...	05/29/1984
4308044	Extreme pressure belted structures A die (10, 40) for extrusion of optical grade fibers includes an insert (12, 42) placed under compression within a sleeve (14, 44). Tapered surfaces (18, 20 & 48, 50) between the insert and the sleeve enable axial assembly of the components when the inser...	12/29/1981
4261721	Terminating optical fiber cables A method of terminating an optical fiber cable wherein an annular deformable member (1) is compressed inwardly onto a cable (7) threaded through it by causing an encircling cincture (3) exhibiting `memory` properties to try to return to a remembered shape...	04/14/1981
4116655	Method for making optical-fibre cables An improved fibre-optic cable termination which substantially reduces light losses and also facilitates cable termination in the field as opposed to the factory. According to this method the fibres are compressed by pushing the bundle, preferably sheathed...	09/26/1978
4063914	Method of producing an optical fiber A method of and a device for a simultaneous extrusion of multi-component co-axial rods with very uniform, centered cores. A block of cladding material has core material co-axially contained in the geometric relationship desired for the ultimate product, a...	12/20/1977
4056377	Method for the production of one-material optical fibers A method for producing one-material optical fibers having at least one light conducting component supported in a protective sleeve or casing characterized by forming a one-piece blank having an open cross section by either pressing, continuous casting, ch...	11/01/1977

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Class 65/401 - Extruding