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| Number | Title | Issue Date |
| 8178452 | Optical glass An optical glass having a refractive index (nd) within a range from 1.825 to 1.870, an Abbe number (νd) within a range from 22 to less than 27, a transformation temperature (Tg) within a range from 530° C. to 585° C. and an mean coefficient of linear thermal expa... | 05/15/2012 |
| 7659222 | Optical glass An optical glass comprising SiO2, B2O3 and La2O3 and one or more oxides selected from the group consisting of ZrO2, Nb2O5 and Ta2O5, having a refractive ind... | 02/09/2010 |
| 7572746 | Optical glass An optical glass having optical constants of refractive index (nd) within a range from 1.49 to 1.54 and Abbe number (ν d) within a range from 55 to 65 comprises, in mass %, | 08/11/2009 |
| 7419923 | Optical glass An optical glass comprising in mass %: P2O5... | 09/02/2008 |
| 7371703 | Optical glass suffering little change in refractive index by radiation of light An optical glass wherein an amount of change in refractive index (Δn: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43 W, pulse... | 05/13/2008 |
| 7368404 | Optical glass An optical glass having a refractive index (nd) and Abbe number (νd) within a range enclosed with a border line consisting of straight lines connecting point A (nd being 1.75 and νd being 50.0), point B (nd being 1.80 and νd being 46.0), point C (nd being 1.80 an... | 05/06/2008 |
| 7320949 | Optical glass An optical glass suitable for precision mold pressing has a refractive index (nd) of 1.88 or over and an Abbe number (ν d) within a range from 22 to 28, comprises, in mass %, | 01/22/2008 |
| 7306879 | Lithium ion secondary cell A lithium ion secondary cell comprises a positive electrode, a negative electrode, a solid electrolyte and a fiber layer provided in an interface between the solid electrolyte and the positive electrode and/or in an interface between the solid electrolyte and the ne... | 12/11/2007 |
| 7226881 | Ultra low thermal expansion transparent glass ceramics There are provided glass-ceramics having an ultra low thermal expansion property and super flat surface capable of coping with lithography for the next generation LSI and component parts for semiconductor equipment such as masks, optical reflecting mirrors, wafer st... | 06/05/2007 |
| 7217672 | Optical glass suffering little change in refractive index by radiation of light An optical glass wherein an amount of change in refractive index (Δn: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43W, pulse ... | 05/15/2007 |
| 7211532 | Alkali ion conductive glass-ceramics and electric cells and gas sensors using the same There are provided glass-ceramics having a high lithium ion conductivity which include in mol %: ... | 05/01/2007 |
| 7196027 | Optical glass suffering little change in refractive index by radiation of light An optical glass wherein an amount of change in refractive index (Δn: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43 W, pulse... | 03/27/2007 |
| 7148164 | Low expansion transparent glass-ceramics, glass-ceramic substrate and optical waveguide element There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6Ã... | 12/12/2006 |
| 7111541 | Cutting device A cutting device includes a cutter rod, and a movable cutting tool of a length greater than the diameter of the cutter rod. The movable cutting tool is prevented from cracking and breaking. A movable cutting tool (7) has protruding parts (7b | 09/26/2006 |
| 7100373 | Hydraulic tool A hydraulic tool is provided with a spool valve 24 for changing the flow of a working fluid pressurized by a hydraulic power generating mechanism in a hydraulic circuit. The spool valve 24 is slidable in directions perpendicular to a piston rod 18 | 09/05/2006 |
| 7087542 | Optical glass There is provided an optical glass suitable for mold pressing having optical constants of a refractive index (nd) within a range from 1.60 to 1.69 and Abbe number (νd) within a range from 35 to 45, having a glass transition point (Tg) within a... | 08/08/2006 |
| 7060640 | Optical glass An optical glass comprises, in mass percent, 15–35% of P2O5, 40–60% of Nb2O5, 0.5% to less than 15% of Na2O and 3% to less than 25% of BaO, has a ratio in mass % of (BaO+Nb2O5)/{(TiO | 06/13/2006 |
| 7005187 | Glass for a light filter and a light filter Glass for a light filter capable of preventing variation of refractive index in a band-pass filter has a coefficient of thermal expansion within a range from 90×10−7/° C. within a temperature range from −20° C. to +70° C. and, preferably, Young's ... | 02/28/2006 |
| 6867157 | Optical glass having an anomalous dispersion An optical glass having a positive anomalous dispersion comprises, in mass %, SiO2 40-60% | 03/15/2005 |
| 6846762 | Optical glass An optical glass which is free of PbO which causes environmental pollution and also is free of expensive Ta2O5 and Nb2O5 comprises, in mass %, | 01/25/2005 |
| 6828265 | Optical glass An optical glass suitable for precision press molding has a refractive index (nd) of 1.88 or over and an Abbe number (νd) within a range from 22 to 28, comprises, in mass %, | 12/07/2004 |
| 6819526 | Holding member for information storage disk and information storage disk drive device An information storage disk holding member for holding an information storage disk in position in an information storage disk drive device, the holding member being made of glass-ceramics in which a crystal phase is dispersed in a glass matrix. The holding member ha... | 11/16/2004 |
| 6797659 | Optical glass There is provided an optical glass suitable for precision mold pressing having optical constants of a refractive index (nd) within a range from 1.75 to 1.85 and an Abbe number (νd) within a range from 35 to 45, comprising in mass % on oxide ba... | 09/28/2004 |
| 6794043 | Glass-ceramics for a light filter There is provided a glass-ceramic which is suitable for use as a light filter. The glass-ceramic has Young's modulus (GPa) within a range from 95 to 120 and includes 5.3-8 weight percent of Al2O3, 0.5-3.5 weight percent of ZrO2 and 7... | 09/21/2004 |
| 6703333 | Optical glass There is provided an optical glass suitable for mold pressing having optical constants of a refractive index (nd) within a range from 1.60 to 1.69 and Abbe number (.nu.d) within a range from 35 to 45, having a glass transition point ... | 03/09/2004 |
| 6677259 | Glass-ceramics for a light filter Glass-ceramics for a light filter capable of preventing variation of refractive index in a band-pass filter have a coefficient of thermal expansion within a range from 95×10-7 /°C. to 140×10-7 /°C. within a temperature range from... | 01/13/2004 |
| 6582826 | Glass-ceramics There is provided a glass-ceramic substrate which is suitable for use as a light filter. The glass-ceramic has a Young's modulus (GPa) within a range from 95 to 120 and includes 5.3 to 8 weight percent (expressed on an oxide basis) of Al2 O | 06/24/2003 |
| 6521557 | Transparent glass and a method for manufacturing the same An aluminosilicate transparent glass has corrosion resistance in the form of mass loss of 4.0 mg or below per 1cm2 of the surface of a specimen upon holding the specimen for five hours in sodium hydroxide solution having concentration of 300 mg... | 02/18/2003 |
| 6503857 | High rigidity glass-ceramic substrate A high rigidity glass-ceramic substrate is provided which contains, as a predominant crystal phase or phases, at least one crystal phase selected from the group consisting of enstatite (MgSiO3), enstatite solid solution (MgSiO3 solid... | 01/07/2003 |
| 6495480 | Glass-ceramic substrate for an information storage medium A glass-ceramic substrate for an information storage medium made of a glass-ceramics having a crystal phase dispersed in a glass matrix has a ratio of crystal phase (the amount of crystal) in the glass-ceramics is within a range from 50 wt % to 70 wt % an... | 12/17/2002 |
| 6485622 | Lithium ion conductive glass-ceramics and electric cells and gas sensors using the same Lithium ion conductive glass-ceramics comprise in mol %: P2 O5 30-45% SiO2 0-15% GeO2 + TiO2 25-50% ... | 11/26/2002 |
| 6475677 | Glass-ceramic composite electrolyte and lithium secondary cell There is provided a glass-ceramic composite electrolyte including a medium containing glass-ceramic powder impregnated with a non-aqueous electrolytic solution. There is also provided a lithium secondary cell having a positive electrode, a negative electr... | 11/05/2002 |
| 6461733 | Glass for a light filter and light filter Glass for a light filter capable of preventing variation of refractive index in a band-pass filter has a coefficient of thermal expansion within a range from 90×10-7 /° C. to 120×10-7 /° C. within a temperature range from -20° C... | 10/08/2002 |
| 6429160 | High rigidity glass-ceramic substrate A high rigidity glass-ceramic substrate is provided which contains, as a predominant crystal phase or phases, at least one crystal phase selected from the group consisting of enstatite (MgSiO3), enstatite solid solution (MgSiO3 solid... | 08/06/2002 |
| 6426311 | Glass-ceramics There are provided glass-ceramics containing, as a predominant crystal phase or phases, at least one selected from the group consisting of -cristobalite, -cristobalite solid solution, -quartz and -quartz solid solution, contain... | 07/30/2002 |
| 6420286 | Glass-ceramics A glass-ceramic suitable for use as a light filter includes, as a predominant crystal phase, lithium disilicate (Li2 O.2SiO2) or a combination of lithium disilicate and at least one crystal phase selected from the group consisting of... | 07/16/2002 |
| 6410466 | Glass-ceramics for a light filter Glass-ceramics of a light filter capable of preventing variation of refractive index in a band-pass filter have a coefficient of thermal expansion within a range from 95×10-7 /° C. to 140×10-7 /° C. within a temperature range fro... | 06/25/2002 |
| 6395368 | Glass-ceramic substrate for a magnetic information storage medium A glass-ceramic substrate for a magnetic information storage medium having a super flat surface comprises, as a predominant phase or phases, at least one crystal phase selected from the group consisting of lithium disilicate (Li2 O.2SiO2 | 05/28/2002 |
| 6387509 | Glass-ceramic substrate for a magnetic information recording medium A glass-ceramic substrate for a magnetic information recording medium contains, as a main crystal phase or phases, one or more crystal phases selected from the group consisting of ଲ-quartz (ଲ-SiO2), ଲ-quartz solid solution (&#... | 05/14/2002 |
| 6383645 | Glass-ceramic substrate for an information storage medium There is provided a glass-ceramic substrate for an information storage medium usable in an information storage device of the ramp loading system. The glass ceramic substrate has a Young's modulus (GPa)/specific gravity of 37 or over and includes 5.3 to 8 ... | 05/07/2002 |
