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| Number | Title | Issue Date |
| 7341442 | Mold for molding lenses An exemplary mold for molding lenses includes an upper mold core, a lower mold core, and a shell. The upper mold core has a first convex molding surface. The lower mold core has a second convex molding surface opposite to the first convex molding surface. The shell ... | 03/11/2008 |
| 7325418 | Press forming system for glass The present invention is directed to reduce the total footprint of a press forming system for glass having a plurality of press units, and also to increase an actual availability of each press unit. A plurality of press units are arranged in two parallel rows and a ... | 02/05/2008 |
| 7313930 | Method and apparatus for manufacturing glass substrate for storage medium A method of manufacturing a glass substrate for a storage medium by pressing a glass material between an upper and a lower dies. The method includes a heating step of heating the glass material arranged between the upper and lower dies, a pressing step of pressing t... | 01/01/2008 |
| 7311869 | Method for processing and producing a surface with a degree of lustre The invention relates to a method for processing and producing a surface of a material with a reproducible degree of lustre and to a press for carrying out said method. The aim of the invention is to increase the stability of the press. To achieve this, a press is p... | 12/25/2007 |
| 7290751 | Composite mold and method for manufacturing the same A composite mold comprising a main body, a molding layer formed on the main body, and a protective layer formed on the molding layer, the protective layer being made from diamond-like carbon. A method for manufacturing the composite mold comprising the following ste... | 11/06/2007 |
| 7273204 | Mold for forming optical lens and method for manufacturing such mold A mold 50 for forming optical lenses has a molding portion 10 having a molding surface 12, a thin film 30 is formed on the molding surface, which is made from SiCHxNy, wherein x is in the range of 0.02˜0.10, y is in... | 09/25/2007 |
| 7258051 | Arrangement for cutting an optical fibre An arrangement for cutting an optical fibre comprises a fibre cutter for cutting the fibre. A motor is provided to operate the cutter. To start a cutting movement, the motor is controlled by a control unit in response to a start signal. The start signal is generated... | 08/21/2007 |
| 7211326 | Carbon material and process of manufacturing A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of boron oxide or its precursors and ammonia-generating phases such as melamine or its like in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbon... | 05/01/2007 |
| 7146828 | Glass molding die A molding die for molding glass thousand times is provided in the invention. The molding die includes a substrate, a first intermediate layer of Ni-containing Ir—Re alloy overlying the substrate, a second intermediate layer of metal-containing Ir—Re alloy overly... | 12/12/2006 |
| 7134372 | CNC slitter machine A machine for slitting a metal sheet has a number of knife holder assemblies each containing a rotary knife. The knife holder assemblies are mounted for movement along upper and lower rotating shafts which rotate the knives during a slitting operation. The position ... | 11/14/2006 |
| 7063891 | Surface hardened carbon material and process of manufacturing A carbon material is formed by heat-treating a carbonaceous material in a reaction mix of oxides of boron and boron nitride in a nitrogen atmosphere to temperatures of 1600 to 2000° C. The surface of the carbonaceous material is transformed into a carbon material t... | 06/20/2006 |
| 6928838 | Apparatus and method for forming silica glass elements The forming apparatus has top and bottom die assemblies which form a heated silica glass material by press forming. These top and bottom die assemblies include, respectively, mold dies, which are made of isotropic carbon, and core molds, which are made of vitrified ... | 08/16/2005 |
| 6823695 | Press-forming system for glass An object of the present invention is to enable to use a common transfer machine for transferring performs to and for transferring products from a press-forming system for glass having a plurality of press units. The press-forming system for glass has a plurality of... | 11/30/2004 |
| 6766660 | Molding die and manufacturing method of molded product A molding die has a shell having a penetration hole, a lower pattern installed in the lower opening of the shell, and an upper pattern slidably disposed from the upper opening of the shell. The shell includes an outer shell and an inner shell disposed inside of the ... | 07/27/2004 |
| 6574992 | Method and device for curving and tempering a glass sheet During a process for bending and quenching a window pane, the latter is bent to the desired shape using a forming frame. Next, by means of this same forming frame, the entire surface of both sides of the bent window pane is rapidly cooled, in a quenching ... | 06/10/2003 |
| 6560994 | Mold used for molding glass optical elements process for preparation of glass optical elements and method for rebirth of mold Disclosed is a mold including upper and lower molds for obtaining glass optical elements by press molding a glass molding material softened by heat, in which either one of the upper and lower molds is made of a ceramic matrix and the matrix has no surface... | 05/13/2003 |
| 6370918 | Press forming machine for optical devices A press forming machine for optical devices which manufactures, an optical device from silica glass with a high glass transition point. A transparent quartz tube surrounds an upper die unit, lower die unit, fixed shaft, and moving shaft to form an airtigh... | 04/16/2002 |
| 6363747 | Glass mold material for precision glass molding A method for making working mold tools for use in a compression molding process for molding optical glass elements from high temperature glasses having Tg 's in the range of from about 400° C. to about 850° C. An yttria aluminosilicate glass ... | 04/02/2002 |
| 6343489 | Bending rail band guide A variable radius bending apparatus is disclosed for bending a glass plate. The variable radius bending apparatus includes a bending rail having a longitudinal rail member and a drive drum and a tension drum rotatably attached thereto. A drive band is pos... | 02/05/2002 |
| 6318125 | Method and device for bending glass sheets A process for shaping glass sheets with a surface-shaping mould, against which the glass sheets are pressed using a pressure drop produced by sucking out the air from the space lying between the moulding face and that face of the glass sheet on the opposi... | 11/20/2001 |
| 6299429 | Dual fiber optic laser texturing The substrate of a magnetic recording medium is laser textured employing a dual fiber-optic laser delivery system which enables separate control of nucleation and crystallization. An embodiment of the invention includes laser texturing glass, ceramic and ... | 10/09/2001 |
| 6279347 | Method and apparatus for producing bent glass sheet This invention provides a method and an apparatus for producing a bent glass sheet. A heated glass sheet (4, 24, 24*) conveyed from a heating furnace (1, 21) is bent by pressing with at least one belt (5, 9, 25) made of a heat-resistant material against a... | 08/28/2001 |
| 6099765 | Optical component formation method A method of forming an optical component wherein imperfections in molding the optical component, such as a lens, are removed by: heating an optical material to its plastic state; forming the optical material into the desired shape by employing a mold appa... | 08/08/2000 |
| 6003336 | Method of manufacturing a die for press-molding optical elements A die for press-molding glass optical elements which can press-mold glass optical elements having high melting points and various shapes repeatedly, which includes a base material having high strength on which a cutting layer having heat resistance and fr... | 12/21/1999 |
| 5992180 | Method and apparatus for bend-shaping a glass plate A glass plate is heated in a heating furnace and is bend-shaped to be a complexly curved glass plate while the glass plate is passed on curved rollers wherein support pads of a pushing mechanism push the complexly curved glass plate from an upstream side ... | 11/30/1999 |
| 5974836 | Device used for the bending of plate glass into convex shapes A device used for the bending of plate glass sections (3) includes an oven (1), a bending chamber (6), an upper bending mold installed in the bending chamber (6) in such a manner as to be able to be raised and lowered, a duct producing a flow of hot gas i... | 11/02/1999 |
| 5938807 | Method for manufacturing press-molded glass object and apparatus therefor In press molding, a shaft (metal mold 13) is moved by positional or torque control to cause upper and lower molds to reach a set position slightly before a position where the upper and lower molds are set in a final mold closed state. As soon as the upper... | 08/17/1999 |
| 5888268 | Glass-plate working apparatus A glass-plate working apparatus (A) includes a base (2) on which a glass plate (1) is placed; Y-direction movable bases (3) and (4) which are supported by the base (2) movably in a Y-direction perpendicular to an X-direction; a Y-direction moving device (... | 03/30/1999 |
| 5855641 | Mold for molding optical element Molds for press molding an optical element of glass are disclosed. Proposed are: (1) A mold contains oxygen at the interface between a mold base of the mold and a carbon film formed at least on the molding surface of the mold base with an oxygen amount of... | 01/05/1999 |
| 5817161 | Optical element forming method In forming a piano-convex lens from a column-like lens blank by heating the blank to a temperature higher than the transition temperature thereof and by pressurizing an upper die with a closed space formed between the blank and the upper die, there are al... | 10/06/1998 |
| 5788732 | Optical-device forming method and apparatus A method and apparatus for forming an optical device of a desired shape presses a heat-softened optical material using a set of molds. The optical material is aligned with respect to the molds by two or more aligning members which move around the center o... | 08/04/1998 |
| 5766294 | Method and apparatus for producing an optical element using a molding block and a temperature effecting mechanism contacting the molding block for heat exchange A method and an apparatus for producing an optical element capable of performing a molding temperature control required for a plurality of independent molding blocks in a short period of time, and continuously and simultaneously producing a plurality of d... | 06/16/1998 |
| 5762676 | Product for molding glass lenses having difficult shapes An improved tool is provided for pressing glass into a precision optical element having a strong concave surface. The tool is selected from ceramic and metal materials having coefficients of thermal expansion greater than the coefficient of the pressed gl... | 06/09/1998 |
| 5711780 | Mold for molding optical element A mold for press molding an optical element of glass has carbon atoms injected in amounts from 1015 to 1018 ion/cm2 into a molding surface of a mold base of the mold and subjected to further treatment to form on the moldin... | 01/27/1998 |
| 5700307 | Die for press-molding optical elements A die for press-molding glass optical elements which can press-mold glass optical elements having high melting points and various shapes repeatedly, which includes a base material having high strength on which a cutting layer having heat resistance and fr... | 12/23/1997 |
| 5697999 | Glass sheet bending apparatus Glass sheet bending apparatus (20) including at least one deformable mold (22) has a linkage (26) that extends between mold members (24) and includes connector links (28) fixed to the mold members and having pivotal connections (32) to each other about ax... | 12/16/1997 |
| 5676723 | Mold for forming an optical element There is disclosed a mold for pressing molding of an optical element of glass. On at least the molding surface of the mold base of the mold, there is formed a mixing layer which consists of carbon and at least one of the elements constituting the mold bas... | 10/14/1997 |
| 5653778 | Molding device comprising microwave generator and a microwave oven A device for molding products made of glass or a synthetic resin which device has a microwave generator, a microwave oven coupled to the generator and mold parts movable relative to each other provided in the microwave oven for forming molds for holding a... | 08/05/1997 |
| 5641334 | Method and furnace for bending glass sheets in a series The invention relates to a method in a sequential bending furnace for bending glass sheets. According to the method, carriages are advanced in the furnace into a section downstream in the traveling direction of the carriages for a subsequent bending cycle... | 06/24/1997 |
| 5630859 | Optical element forming method In forming a plano-convex lens from a column-like lens blank by heating the blank to a temperature higher than the transition temperature thereof and by pressurizing an upper die with a closed space formed between the blank and the upper die, there are al... | 05/20/1997 |
