Patent application number | Description | Published |
20090220824 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied - Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm | 09-03-2009 |
20090247386 | FLUOROPHOSPHATE GLASS, PRECISION PRESS MOLDING PREFORM, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT AND METHOD OF MANUFACTURING THE SAME - The present invention provides a fluorophosphate glass containing more than 3 cationic % and 30 cationic % or less of a phosphorus ingredient in terms of P | 10-01-2009 |
20090247387 | FLUOROPHOSPHATE GLASS, PRECISION PRESS MOLDING PREFORM, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT AND METHODS OF MANUFACTURING THE SAME - The present invention provides a fluorophosphate glass containing 30 to 50 cationic % of a phosphorus ingredient in terms of P | 10-01-2009 |
20090247388 | FLUOROPHOSPHATE GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT AND METHODS OF MANUFACTURING THE SAME - The present invention provides a fluorophosphate glass containing phosphorus, oxygen and fluorine as glass ingredients, in which, provided that a refractive index nd of the glass is nd | 10-01-2009 |
20090298668 | OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT AND MANUFACTURING METHOD THEREOF - A fluorophosphate glass containing: P | 12-03-2009 |
20090325774 | PHOSPHATE GLASS, FLUOROPHOSPHATE GLASS, PREFORM FOR PRECISION PRESS-MOLDING, OPTICAL ELEMENT AND PROCESS FOR THE PRODUCTION OF THEREOF - A fluorophosphate glass having a fluorine content of 25% or more by anionic %, which is produced from a glass raw material containing 0.1 to 0.5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine, and a phosphate glass having a fluorine content of less than 25% by anionic %, which is produced from a glass raw material containing 0.1 to 5% by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine. | 12-31-2009 |
20100113247 | OPTICAL GLASS, PREFORM FOR PRESS FORMING, OPTICAL ELEMENT, AND PROCESSES FOR PRODUCING THESE - Provided is a low-dispersion optical glass that is formed of a fluorophosphate glass in which the molar ratio of the content of O | 05-06-2010 |
20100160141 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied - Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm | 06-24-2010 |
20110159322 | GLASS FOR CHEMICAL STRENGTHENING, SUBSTRATE FOR INFORMATION RECORDING MEDIA AND INFORMATION RECORDING MEDIA - A glass for use in chemical reinforcement for use in a substrate of an information recording medium, having a composition comprising, denoted as mol %: | 06-30-2011 |
20110287922 | FLUOROPHOSPHATE GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT, PROCESSES FOR PRODUCTION OF SAME, AND PROCESS FOR PRODUCTION OF GLASS MOLDINGS - The present invention provide a fluorophosphate glass comprising 3 to 25 cation % of P | 11-24-2011 |
20120090358 | METHOD FOR PRODUCING FLUOROPHOSPHATE GLASS, GLASS MATERIAL FOR PRESS MOLDING AND OPTICAL ELEMENT - In order to produce a fluorophosphate glass including P | 04-19-2012 |
20120111061 | PRODUCTION OF FLUOROPHOSPHATE OPTICAL GLASS, AND PRODUCTION OF OPTICAL ELEMENT - In a method for producing a fluorophosphate optical glass comprising melting a glass raw material to give a molten glass, and refining, homogenizing and then quickly quenching the molten glass to produce the fluorophosphate optical glass, even if the glass is flown from a refining tank that is set to a high temperature to an operation tank that is set to a low temperature, bubbles are not generated in the glass. | 05-10-2012 |
20120245015 | OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT BLANK, OPTICAL ELEMENT AND MANUFACTURING METHOD THEREOF - A fluorophosphate glass containing: P | 09-27-2012 |
20120258848 | PHOSPHATE GLASS, FLUOROPHOSPHATE GLASS, PREFORM FOR PRECISION PRESS-MOLDING, OPTICAL ELEMENT AND PROCESS FOR THE PRODUCTION OF THEREOF - A fluorophosphate glass having a fluorine content of 25% or more by anionic %, which is produced from a glass raw material containing 0.1 to 0.5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine, and a phosphate glass having a fluorine content of less than 25% by anionic %, which is produced from a glass raw material containing 0.1 to 5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine. | 10-11-2012 |
20120328907 | GLASS FOR USE AS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM, AND THEIR PRODUCTION METHODS - According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO | 12-27-2012 |
20130040169 | GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND MAGNETIC INFORMATION RECORDING MEDIUM TO WHICH THE GLASS SUBSTRATE IS APPLIED - Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm | 02-14-2013 |
20140302346 | GLASS FOR USE AS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, SUBSTRATEFOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM, ANDTHEIR PRODUCTION METHODS - According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO | 10-09-2014 |