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| Number | Title | Issue Date |
| 8166778 | Tempered glass for thermal insulation The invention relates to a pane that has undergone a chemical toughening operation so as to have an alkali-metal-ion concentration gradient from its surface over an exchange depth of at least 100 μm, a surface stress of at least 200 MPa, and a strain point at the c... | 05/01/2012 |
| 8113014 | Method of manufacturing glass substrate for recording medium, glass substrate for recording medium, recording medium and holding jig Provided is a method of manufacturing a glass substrate efficiently via prevention of foreign matter adhesion to a glass substrate as to chemical strengthening. Disclosed is a method of manufacturing a glass substrate for a recording medium possessing the step of co... | 02/14/2012 |
| 7891212 | Magnetic disk glass substrate A magnetic disk glass substrate including compressive stress layers at main surfaces and a tensile stress layer between the compressive stress layers formed by chemical strengthening. When the glass substrate has a thickness of less than 0.5 mm and the tensile stres... | 02/22/2011 |
| 7882709 | Glass substrate for an information recording medium, method for manufacturing a glass substrate for an information recording medium, and an information recording medium Provided are a glass substrate for an information recording medium, which has both high strength and high flatness and can be manufactured at low cost, a method for manufacturing such glass substrate and an information recording medium using such glass substrate. Th... | 02/08/2011 |
| 7703303 | Magnetic disk glass substrate manufacturing method A magnetic disk glass substrate manufacturing method includes a step of polishing a surface of a glass substrate to a mirror surface, a gas heating process step of causing a heated atmosphere and the glass substrate to contact each other so as to heat the glass subs... | 04/27/2010 |
| 7694530 | Chemical strengthening treatment method of magnetic disk glass substrate Chemical strengthening treatment is performed by first providing a granular chemical strengthening salt so as to prevent spread in atmosphere at the time of introduction of chemical strengthening salt in a treating vessel, introducing the chemical strengthening salt... | 04/13/2010 |
| 7415841 | Method for producing chemically strengthened glass substrate for information recording medium Prior to conducting chemical strengthening treatment by contacting a glass with a potassium-containing chemical strengthening treating solution, oxidation treatment is conducted to iron-containing particles adhered to a surface of the glass as a pre-step, and the gl... | 08/26/2008 |
| 7354526 | Processing method for glass substrate, processed glass product and stress applying apparatus A processing method for glass substrate of the present invention includes: applying heat and external force to a glass substrate and then cooling it down to thereby form a compression stressed part having a different etching rate from that of other parts with respec... | 04/08/2008 |
| 7309671 | Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same A glass substrate of the present invention for magnetic recording media having high heat resistance and easy chemical strengthening ability at once has not been obtained, which is a glass composition essentially comprising 60 to 70 wt % SiO2, 5 to 20 wt %... | 12/18/2007 |
| 7284558 | Enhanced megasonic based clean using an alternative cleaning chemistry The present invention relates to the use of a C1 to C5 alcohol during the cleaning step. With the use of said alcohol, the surface tension of the solution is reduced which allows the application of reduced megasonic power with increased cleanin... | 10/23/2007 |
| 7281394 | Method of manufacturing glass substrate and method of manufacturing information recording medium In a method of manufacturing a glass substrate for an information recording medium including a step for chemically strengthening the glass substrate by contacting the glass substrate with chemical strengthening processing liquid containing chemical strengthening sal... | 10/16/2007 |
| 7255943 | Glass substrate for a magnetic disk, magnetic disk, and methods of producing the glass substrate and the magnetic disk On a principal surface of a glass disk substrate, a texture comprising a combination of an isotropic texture for stabilizing a flight of a magnetic head flying and traveling over a magnetic disk and an anisotropic texture for imparting a magnetic anisotropy to a mag... | 08/14/2007 |
| 7220167 | Gentle chemical mechanical polishing (CMP) liftoff process A method for chemical mechanical polishing (CMP) wafers having high aspect ratio surface topography. A wafer is positioned on a plate. A polishing pad is coupled to a platen. A polishing solution (e.g., slurry) is added between the polishing pad and the wafer. CMP i... | 05/22/2007 |
| 7220446 | Management technique of friction coefficient based on surface roughness, substrate for information recording medium, information recording medium and manufacture method thereof There are disclosed an information recording medium substrate having a surface roughness of Rmax 15 nm or less, and an information recording medium, particularly an information recording medium substrate and information recording medium in which for surfaces of the ... | 05/22/2007 |
| 7217662 | Method of processing a substrate There is disclosed a method of processing a substrate, which comprises applying a surfactant or a water soluble polymer agent onto a surface of a substrate to be processed, and sliding a circumferential portion of the substrate and a polishing member against each ot... | 05/15/2007 |
| 7197897 | Chemical strengthening process for disks used in disk drive data storage devices A salt mixture used for chemical strengthening of data recording disks is subjected to sub-micron filtration prior to use to remove certain impurities. Preferably, glass disks are chemically strengthened by ion exchange in a bath of molten sodium nitrate and potassi... | 04/03/2007 |
| 7157149 | Surface-modified glass-ceramics and their preparation The present invention relates to a product, comprising a body which is delimited by a surface, of a lithium aluminosilicate-based glass-ceramic, as well as to its method of preparation. Characteristically, said glass-ceramic has, on at least one part of said surface... | 01/02/2007 |
| 7140203 | Method for manufacturing glass substrate of information recording medium Provided is a method for manufacturing a glass substrate for an information recording medium, which is advantageous in that oozing of an alkali and deformation of a texture are suppressed. The glass substrate is chemically reinforced, and a texture is formed in the ... | 11/28/2006 |
| 7132177 | Magnetic recording medium and fabrication method thereof A magnetic recording medium includes an underlayer formed on a substrate and a magnetic layer formed by epitaxial growth on the underlayer. The underlayer is made of Cr based substance, and the magnetic layer is made of Co based magnetic substance. The magnetic laye... | 11/07/2006 |
| 7133134 | Method of measuring a physical function using a symmetric composite function A method measures a physical function, such as a second-order optical nonlinearity profile, or a temporal waveform of a laser pulse. The method includes forming a symmetric composite function by superimposing the physical function with a substantially identical phys... | 11/07/2006 |
| 7104431 | Method and device for manufacturing glass panes of any desired contour from sheet glass A method for producing glass plates of any desired contour from sheet glass, comprising the following steps: scribing scribe lines into a least one face of the sheet glass along the contour down to a depth T, using a cutting device, and positioning the glass plate o... | 09/12/2006 |
| 7070703 | Process for producing glass disk substrates for magnetically recordable data storage disks A polished glass disk is prepared for a magnetically recordable coating by texturing the surfaces with a highly abrasive material being abrasively engaged with the surfaces as the disk is rotated, thereby creating a relatively coarse texture with the abrasions conce... | 07/04/2006 |
| 7044839 | Glass substrate for information recording medium and process for manufacturing the same A glass substrate for use in an information recording medium is manufactured by polishing a surface of a disc-shaped glass substrate and then performing texture processing on the surface. The texture processing includes the steps of forming lines of texture on the s... | 05/16/2006 |
| 7040953 | Substrate for information recording media and manufacturing method thereof, and information recording medium There are provided a substrate for information recording media and a manufacturing method thereof, according to which the projection height of minute undulations formed on the substrate surfaces can be made more uniform, and variation in the projection density can b... | 05/09/2006 |
| 7010939 | Glass substrate for data recording medium and manufacturing method thereof In a first polishing step, or in a first half of a super precision polishing, a surface of a glass substrate is polished with a first suspension. The first suspension contains particles and a dispersion agent in which the particles are dispersed. The main ingredient... | 03/14/2006 |
| 6966201 | High-temperature sintering of soot bodies doped using molecular stuffing Techniques are described for fabricating a preform from a soot body. In one described technique, a soot body is loaded into a substrate tube, and the position of the soot body is stabilized within the tube. The tube is then rotated around its longitudinal axis. Heat... | 11/22/2005 |
| 6955840 | Liquid crystal display device having thin glass substrate on which protective layer formed and method of making the same The LCD according to present invention includes a first substrate and a second substrate, two protective layers including at least one layer formed on outer surface of the first and second substrates, a transparent electrode formed on inner surface of the first subs... | 10/18/2005 |
| 6932677 | Polishing pad, method of manufacturing glass substrate for use in data recording medium using the pad, and glass substrate for use in data recording medium obtained by using the method A polishing pad used for precise polishing of the surface of a lapped glass workpiece when a glass substrate for use in data recording media is manufactured from a glass workpiece. The polishing pad comprises a base and a polishing portion laminated on the base and ... | 08/23/2005 |
| 6845635 | METHOD OF MANUFACTURING GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIA, GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIA MANUFACTURED USING THE METHOD, AND INFORMATION RECORDING MEDIUM USING THE GLASS SUBSTRATE There are provided a method of manufacturing a glass substrate for information recording media that allows the inner and outer peripheral edge surfaces of the glass substrate for information recording media to be smoothed easily and inexpensively, a glass substrate ... | 01/25/2005 |
| 6845634 | Method for fabricating thallium-doped GRIN lens A fabrication method for a thallium-doped GRIN lens composed of a simplified glass composition is described. The composition is composed of silicon, oxygen, boron, zinc, potassium, sodium, and thallium. The method is comprised of preparing a cylindrical preform, ann... | 01/25/2005 |
| 6810688 | Method for treating glass substrates and glass substrates for the producing of display screens The subject of the invention is a process for treating a glass sheet which consists of a glass composition having a strain point above 540° C. and is intended for producing a display screen, the said process including at least one ion-exchange treatment on at least... | 11/02/2004 |
| 6782717 | Method for manufacturing glass substrate of information recording medium A method for manufacturing a disk-like glass substrate that is used as an information recording medium. The glass substrate is acid resistant. When an index of acid resistance is the maximum depth at which components other than silica dissolve from the glass substra... | 08/31/2004 |
| 6772608 | Method for producing UV polarizers The invention relates to a method for producing UV polarizers, according to which spheroid particles situated near the surface of the glass are incorporated into the support material (primarily standard float glass) in a novel arrangement. According to the method fo... | 08/10/2004 |
| 6673474 | Medium substrate, production method thereof and magnetic disk device A medium substrate comprising a borosilicate glass containing silica as a main component and having on the surface thereof a continuous texture derived from the porous structure, the medium substrate being used as a substrate in the production of a magnet... | 01/06/2004 |
| 6668587 | Method for the production of glass substrates for magnetic recording mediums A method for the production of a glass substrate for magnetic recording mediums is herein provided and this method is characterized in that the final cleaning step is performed in two stages, in which scrubbing and dip-cleaning steps are carried out after... | 12/30/2003 |
| 6638623 | pH adjustment of a strengthening melt for use in strengthening glass substrates A method of adjusting the pH of a strengthening melt for use in strengthening glass substrates, e.g., glass disk substrates for use in data storage devices. A non-particle-forming acid is added to the strengthening melt to lower the pH of the strengthenin... | 10/28/2003 |
| 6607999 | Glass for cathode-ray tube, strengthened glass, method for the production thereof and use thereof A glass for a cathode ray tube which glass can be decreased in thickness and weight, a glass panel for a cathode ray tube, a cathode ray tube and methods for producing them. Strengthened glass having a high bending strength and a thick stress-strain layer... | 08/19/2003 |
| 6595028 | Chemical reinforced glass substrate having desirable edge profile and method of manufacturing the same In a method of manufacturing a chemical reinforced glass substrate, consideration is previously made about a relationship between conditions of chemical reinforcement for a glass substrate and deformation caused by the chemical reinforcement at an edge po... | 07/22/2003 |
| 6550278 | Method of manufacturing glass substrate for use as information recording medium A glass substrate for use as an information recording medium has an average surface roughness (Ra) in the range of 0.3 nmࣘRa | 04/22/2003 |
| 6523367 | Method of manufacturing glass substrate for use in information recording medium, and method of manufacturing information recording medium In a method of manufacturing a glass substrate for an information recording medium including a step for chemically strengthening the glass substrate by contacting the glass substrate with chemical strengthening processing liquid containing chemical streng... | 02/25/2003 |
