| Patent application number | Description | Published |
|---|
| 20080286548 | Down-drawable, chemically strengthened glass for cover plate - An alkali aluminosilicate glass that is chemically strengthened and has a down-drawable composition. The glass has a melting temperature less than about 1650° C. and a liquidus viscosity of at least 130 kpoise and, in one embodiment, greater than 250 kpoise. The glass undergoes ion exchange at relatively low temperatures to a depth of at least 30 μm. | 11-20-2008 |
| 20090142568 | GLASSES HAVING IMPROVED TOUGHNESS AND SCRATCH RESISTANCE - A silicate glass that is tough and scratch resistant. The toughness is increased by minimizing the number of non-bridging oxygen atoms in the glass. In one embodiment, the silicate glass is an aluminoborosilicate glass in which −15 mol 1%≦(R | 06-04-2009 |
| 20090215607 | FINING AGENTS FOR SILICATE GLASSES - A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at least one multivalent metal oxide and, optionally, an oxidizer. A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm | 08-27-2009 |
| 20090220761 | ION EXCHANGED, FAST COOLED GLASSES - A glass that is ion exchangeable to a depth of at least 20 μm (microns) and has a internal region having a tension of less than or equal to 100 MPa. The glass is quenched or fast cooled from a first temperature above the anneal point of the glass to a second temperature that is below the strain point of the glass. In one embodiment, the glass is a silicate glass, such as an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, an alkali gallogermanate glass, and combinations thereof. | 09-03-2009 |
| 20100009154 | GLASS WITH COMPRESSIVE SURFACE FOR CONSUMER APPLICATIONS - A strengthened glass that does not exhibit frangible behavior when subjected to impact or contact forces, and a method of strengthening a glass. The glass may be strengthened by subjecting it to multiple, successive, ion exchange treatments. The multiple ion exchange treatments provide a local compressive stress maximum at a depth of the strengthened layer and a second local maximum at or near (e.g., within 10 μm) the surface of the glass. | 01-14-2010 |
| 20100210442 | METHOD OF SEPARATING STRENGTHENED GLASS - A method is provided for separating or dividing strengthened glass articles, particularly strengthened glass sheets, into at least two pieces, one of which has a predetermined shape and/or dimension. A flaw is initiated in the glass at a depth that is greater than the depth of the strengthened surface layer of the glass, and a vent extending from the flaw is created at a vent depth that is greater than the depth of and outside the strengthened surface layer to at least partially separate the glass. In one embodiment, the vent is generated by treating the glass with a laser to heat the glass to a temperature in a range from about 50° C. below the strain point of the glass up to a temperature between the strain point and the anneal point of the glass. A glass article having at least one strengthened surface and at least one edge having an average edge strength of at least 200 MPa is also described. | 08-19-2010 |
| 20100215862 | METHOD FOR FORMING AN OPAL GLASS - A method of fowling an opal layer on an optically transparent alkali-silicate glass sheet, wherein a liquidus viscosity of the alkali silicate glass forming the sheet is at least about 200,000 poise, a liquidus temperature of the alkali silicate glass is equal to or less than about 1200° C. and wherein the exposed surface of the glass sheet after the exposing comprises an opal layer. The method includes exposing a surface of the optically transparent alkali silicate glass sheet to an alkali metal salt bath at a temperature equal to or greater than 300° C. for at least 5 minutes. | 08-26-2010 |
| 20100291353 | METHOD OF SEPARATING STRENGTHENED GLASS - A method of cutting a glass sheet that has been thermally or chemically strengthened along a predetermined line, axis, or direction with high speed and with minimum damage on the cut edges. The strengthened glass sheet may be an aluminoborosilicate glass material having at least one alkali metal oxide modifier, and the ratio | 11-18-2010 |
