Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7442255 | Crucible for a device for producing a block of crystalline material and method for producing same The bottom of the crucible has much greater thermal transfer properties, parallel to an axis substantially perpendicular to the bottom, than those of the side walls. The bottom and side walls are formed by materials having the same main chemical constituents. The bo... | 10/28/2008 |
| 7383701 | Method of makeing a molding die A molding die for an optical element, comprises a die base body formed by shaping an amorphous alloy having a super-cooled liquid phase, and a die face formed by applying a die face forming process onto a part of the die base body and used to form an optical surface... | 06/10/2008 |
| 7380416 | Conduit for molten glass, connecting conduit for molten glass and vacuum degassing apparatus The present invention provides a A metal conduit for molten glass and a vacuum degassing apparatus are disclosed, which are capable of coping with extension and contraction, and vibration. By disposing at least one convex portion 20 so to have a height of 4 m... | 06/03/2008 |
| 7377132 | Conduit for molten glass, molten glass degassing method and molten glass degassing apparatus A conduit for molten glass, a molten glass degassing method and a sub-atmospheric apparatus are provided, which are able to produce homogenous and good quality glass at low cost. A conduit for molten glass, which is capable of flowing molten glass in a horizontal di... | 05/27/2008 |
| 7366395 | Manufacturing method of die for optical element molding The invention relates to a manufacturing method of a die for molding an optical element. The manufacturing method comprising: forming the first film layer of an amorphous alloy having a super-cooling liquid phase onto a master transfer surface of a master die for mo... | 04/29/2008 |
| 7320231 | Method of making a molding die A molding die for molding an optical element, comprises a die base body formed by shaping an amorphous alloy having a super-cooled liquid phase, and a die face formed by applying a die face forming process onto a part of the die base body and used to form an optical... | 01/22/2008 |
| 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 |
| 7272879 | Glass molding die, renewal method thereof, and glass fabricated by the molding die A molding die for molding glass and renewal method thereof. The molding die includes a substrate, a nickel-phosphorous alloy layer, with phosphorous content 30 wt % or less, overlying the substrate, an intermediate layer overlying the nickel-phosphorous alloy layer,... | 09/25/2007 |
| 7231788 | Method and device for refining a glass melt using negative pressure The apparatus for reduced-pressure refining of a glass melt includes a refining bank formed so that a reduced pressure is generated by a glass flow in it. The refining bank has a component, which is made from a refractory metal or refractory alloy acting as glass-co... | 06/19/2007 |
| 7174745 | Apparatus for press-forming molten bodies An apparatus for press-forming a molten gob made of meltable material, especially of glass or glass ceramics, into a body of specific shape with compression moulds which form with each other a form cavity for receiving the gob. The compression moulds consist at leas... | 02/13/2007 |
| 7159420 | System and method for forming infrared glass optical components A system and method for forming infrared glass optical components are provided. The system includes first and second mold halves having first and second respective faces. The first and second mold halves are configured to be removably coupled such that the first fac... | 01/09/2007 |
| 7143609 | Low-temperature fabrication of glass optical components A method is provided for molding from glass certain complex optical components, such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. ... | 12/05/2006 |
| 7127919 | Methods and apparatus for homogenizing molten glass The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber (11) under conditions such that the magnitude of the shear stress τ on the chamber's wall (... | 10/31/2006 |
| 7107794 | Suction feeder The suction feeder for glass processing includes a housing containing a material; a heatable noble metal or noble metal alloy feed line embedded in the housing in a thermally insulated fashion; a connection element at one end of the feed line for connection with a m... | 09/19/2006 |
| 7017372 | Molten glass supply device, glass formed product, and method of producing the glass formed product A molten glass supply device is provided, which can solve unavoidable problems for high viscosity characteristics in connection with the conventional molten glass supply device for high viscosity glass. Such problems include improperly high heating cost caused by ex... | 03/28/2006 |
| 7013677 | Device for glass melt delivery and method for using them The present invention provides devices for glass melt devlivery and methods for using these devices. In these devices, a delivery nozzle comprising at least one platinum group metal material is directly heated by electricty. To facilitate heating, a cylindrical heat... | 03/21/2006 |
| 7007515 | Noble metal duct for conducting a glass melt and method for conducting a glass melt The double-walled noble metal duct (1) for conducting a glass melt has an outer noble metal pipe (1b) and an inner noble metal pipe (1a) extending within the outer pipe, so that an inner space (21) is formed within the inner... | 03/07/2006 |
| 6993936 | System and method for suppressing the formation of oxygen inclusions and surface blisters in glass sheets and the resulting glass sheets A system and method for suppressing the formation of gaseous inclusions in glass sheets and the resulting glass sheets are described herein. The system includes a melting, fining, delivery, mixing or forming vessel that has a refractory metal component (e.g., platin... | 02/07/2006 |
| 6935618 | Valve component with multiple surface layers A sliding component, particularly a disk valve plate. The sliding component includes a multi-layer surface structure comprising a strengthening layer harder than the substrate material, and an amorphous diamond top layer. ... | 08/30/2005 |
| 6880365 | Use of sintered refractory material based on tin oxide for producing glass furnace throats The use of blocks (1, 2, 3, 4) based on sintered tin oxide for producing the throat of a glass furnace. ... | 04/19/2005 |
| 6868699 | Glass forming mold A glass forming mold comprising a mold having a molding surface, a chromium coating film formed on the molding surface and a silicon oxide film formed on the surface of the chromium coating film. ... | 03/22/2005 |
| 6868698 | Plate-shaped shearing knife A plate-shaped shearing knife is provided made of hard metal for shearing off allotments of liquid glass. The hard metal of the shearing knife has a thermal conductivity of at least 85 W/mK. Next to a V-shaped or circular-shaped cutting region -2-, there are ... | 03/22/2005 |
| 6840062 | Glass bottle molds and method for making the same The bottle mold has dissimilar metal inserts embedded in regions where the bottle mold is most subject to attack by hot glass, such as the neck region and the baffle region, and has a glass contact surface with refined grain size. To fabricate the bottle mold, rough... | 01/11/2005 |
| 6817212 | Skull pot for melting or refining glass or glass ceramics The invention relates to a skull pot for melting or refining glass or glass ceramics, comprising a pot wall (1), a pot base, and an induction coil (3) which surrounds said pot wall and through which high-frequency energy can be coupled into the content... | 11/16/2004 |
| 6810689 | Process for the melting, refining and homogenizing of glass melts The invention relates to a process for the production of a glass melt. For the avoidance of the oxygen reboil the process is equipped with the following process stages or steps: a melting stage a refining st... | 11/02/2004 |
| 6769272 | Method and apparatus for oxygen refinement of a glass melt An apparatus for making glass in which a glass melt is refined in a vessel with oxygen is described. It includes a melt-containing vessel (10) having a refining region (3) for refinement of the glass melt and a noble metal member for producing oxygen i... | 08/03/2004 |
| 6758066 | Glassware forming mold and method of manufacture Thermal conductivity of glassware forming blank molds and blow molds of Ni-Resist ductile iron is selectively controlled by formation of compacted graphite in the mold microstructure during preparation of the melt and casting of the mold bodies. Specifically, with a... | 07/06/2004 |
| 6679085 | Shaping tool with a structured surface for producing structures on glass, and the application thereof for structuring channel plates While avoiding the disadvantages of the screen printing technique employed until now, the invention provides a shaping tool (1) with a structured surface for creating structures on glass (2) which, in an economical way, makes it possible to form high-prec... | 01/20/2004 |
| 6634187 | Apparatus for delivering a cased glass stream having a raised and sealed orifice bushing Apparatus for delivering a cased glass stream having an inner core glass surrounded by an outer casing glass includes a first or upper orifice ring having at least one orifice for receiving core glass, and a second or lower orifice ring secured beneath th... | 10/21/2003 |
| 6634188 | Plate-shaped shearing knife A plate-shaped shearing knife is provided made of hard metal for shearing off allotments of liquid glass. The hard metal of the shearing knife has a thermal conductivity of at least 85 W/mK. Next to a V-shaped or circular-shaped cutting region -2-, there ... | 10/21/2003 |
| 6629436 | Apparatus for thermal treatment of glass and method and thermally treated glass therefrom The present invention is directed to an apparatus for thermal treatment of glass and method and thermally treated glass therefrom. The apparatus is capable of supporting the glass during thermal treatment such as tempering, annealing, bending, and/or shap... | 10/07/2003 |
| 6591636 | Material and method for coating glass forming equipment An oxidation and corrosion resistant coating is applied to glass forming equipment by physical vapor deposition. The coating material is preferably aluminum oxide.... | 07/15/2003 |
| 6589475 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into conta... | 07/08/2003 |
| 6578385 | Frame for supporting glass plate during tempering The invention relates to a frame for supporting a glass plate during a quenching of the glass plate. This frame includes a supporting ring for supporting thereon the glass plate, and a heat-resistant fabric tensioned and covering a top surface of the supp... | 06/17/2003 |
| 6494061 | Apparatus and method for conveying gobs of glass to a glass container forming machine An inclined trough assembly (10) for conveying, by gravity, formable gobs of glass at an elevated temperature to a section of a glass container forming machine of the I.S. type, the trough assembly having a trough member (12) configured, in cross-section,... | 12/17/2002 |
| 6463763 | Apparatus for stirring glass melts The invention pertains to a stirrer apparatus for glass melts. A stirring element and a stirrer shaft are provided, each comprised of a metal or a metal alloy having a high melting point temperature. A drive shaft for the stirring element comprises a diff... | 10/15/2002 |
| 6427489 | Process for producing glass substrate for information recording medium and process for producing recording medium using said glass substrate A process for producing a glass substrate for an information recording medium comprising: (a) providing a chemical reinforcement tank comprising a chemical reinforcement liquid contained therein, and a holding means for holding a glass substrate; and (b) ... | 08/06/2002 |
| 6412308 | Liquid cooling of glassware molds A glassware forming mold that includes a body of heat conductive construction having a central portion with a forming surface for shaping molten glass and a peripheral portion spaced radially outwardly of the central portion. A plurality of coolant passag... | 07/02/2002 |
| 6401493 | Lining material for glass melting furnaces, glass melting furnaces, process for producing glass products, and process for purifying the lining material A lining material for glass melting furnaces comprises platinum or platinum alloy as a base material containing osmium as an impurity in an amount no more than 20 ppm. The lining material is used for that part of the melting furnace which comes into conta... | 06/11/2002 |
| 6334337 | Air bubbler to increase glass production rate In a glass melter, a precious metal insert is used to protect a gas bubbler from corrosion at the orifice of the bubbler through which gas is injected into the melt. The use of a precious refractory metal insert at the bubbler orifice prevents the attack ... | 01/01/2002 |
