Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8187986 | Optical glass The invention provides a novel optical glass which has a refractive index (nd) of 1.78 to 2.2 and an Abbe value (νd) of 16 to less than 40 and is suitable for precision mold press molding by virtue of its having a low glass transition temperature, namely, an optica... | 05/29/2012 |
| 8110514 | Optical glass An optical glass that is an oxide glass having a very high refractive index in spite of its low-dispersion property, having excellent glass stability and having less susceptibility to coloring. ... | 02/07/2012 |
| 7955998 | Optical glass, precision press-molding and process for the production thereof, and optical element and process for the production thereof A high-refractivity optical glass which has both a low-temperature softening property suitable for precision press-molding and glass stability suitable for hot-shaping of a preform, which contains, by mass %, 13 to 30% of B2O3, 0.1 to 4% of Li | 06/07/2011 |
| 7655585 | Optical glass, precision press-molding preform, process for the production thereof, optical element and process for the production of the element Provided is a precision press-molding optical glass that is not easily degraded in quality by the occurrence of an altered layer such as fogging or yellowing on a surface and that comprises B2O3, ZnO, La2O3 and ZrO2 | 02/02/2010 |
| 7605099 | Optical glasses and their uses The optical glass has an index of refraction (nd) greater than or equal to 1.70, an Abbé number (νd) greater than or equal to 35 and a density (ρ) less than or equal to 4.5 g/cm3. Optical elements made with this optical glass are ... | 10/20/2009 |
| 7491667 | Optical glass, precision press-molding preform, process for producing the preform, optical element and process for producing the optical element Provided are optical glasses having a refractive index (nd) of over 1.82 but not more than 1.86 and an Abbe's number (νd) of 30 to 39.5 and having the property of low-temperature softening that permits precision press-molding, one is an optical glass comprising B | 02/17/2009 |
| 7332453 | Ceramics, and methods of making and using the same Ceramics (including glasses and glass-ceramics) comprising nitrogen, and methods of making the same. ... | 02/19/2008 |
| 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 |
| 7314841 | Porcelain composition A ceramic composition includes a glass composition and a filler including at least one of Al2O3 and TiO2, wherein the composition of the ceramic composition includes 0.15 to 0.55 mol of a, 0.45 to 0.85 mol of b, 0.01 to 0.2 mol of an... | 01/01/2008 |
| 7297646 | Ceramics comprising AlO, REO, ZrOand/or HfO, and NbOand/or TaOand methods of making the same Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the ... | 11/20/2007 |
| 7232779 | Optical glass, precision press molding preform and method of manufacturing the same, optical element and method of manufacturing the same Provided are optical glass exhibiting a refractive index (nd) in a range of 1.75 to 1.87, an Abbé number (νd) in a range of 80 to 45, and excellent low-temperature softening properties even when not incorporating Th2O5 as well as permitting a... | 06/19/2007 |
| 7141522 | Ceramics comprising AlO, YO, ZrOand/or HfO, and NbOand/or TaOand methods of making the same Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) Y2O3, or (c) at least one of ZrO2 or HfO2. Embodiments of cer... | 11/28/2006 |
| 7141523 | Ceramics comprising AlO, REO, ZrOand/or HfO, and NbOand/or TaOand methods of making the same Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the ... | 11/28/2006 |
| 7033966 | Optical glass and lens An optical glass which contains at least 20 mol % of TeO2 and has an internal transmittance of at least 80% in a thickness of 2 mm to a light having a wavelength of 405 nm and a refractive index of at least 1.85 to the same light, and which contains no al... | 04/25/2006 |
| 7008892 | Raman-active optical fiber An optical fiber has a fiber core with a higher refractive index and a cladding surrounding the core with a lower refractive index. The fiber core is made of a multi-component oxide glass composition which consists of a glass-forming component and two Raman-active c... | 03/07/2006 |
| 6984261 | Use of ceramics in dental and orthodontic applications The invention relates to uses of glasses and glass-ceramics in dental and orthodontic applications. ... | 01/10/2006 |
| 6977232 | Optical glass, preform for press molding and optical part Provided is an optical glass that has high-refractivity and high-dispersion properties and can give preforms for press-molding, which are excellent in shapability at high temperatures and suitable for precision press-molding. The optical contains, as essentia... | 12/20/2005 |
| 6912093 | Optical glass, press-molding glass gob and optical element An optical glass whose refractive index is high and whose coloring is decreased comprising, by weight %, 2 to 45% of B2O3, 0 to 30% of SiO2 provided that the content of B2O3>the content of SiO2, 10 to... | 06/28/2005 |
| 6875714 | Optical glass and optical element made of the optical glass An optical glass consists essentially, expressed in term of weight percent, of: P2O5: 20.0 to 30.0%, B2O3: 0.5 to 10.0%, Nb2O5: 5.0 to 50.0%, WO3: 15.0 to 27.0%, Bi2O3... | 04/05/2005 |
| 6844279 | Optical glass, press-molding preform and optical part A high-refractivity low-dispersion optical glass that gives press-molding preforms excellent in high-temperature shapability and suitable for precision press-molding, including an optical glass comprising B2O3, La2O3, Gd | 01/18/2005 |
| 6841493 | High K glass and tape composition for use at high frequency The present invention is directed to a glass composition comprising, based on mole %, 15-35% MO where M is selected from BaO, CaO, MgO, PbO, SrO and mixtures thereof, 30-60% TiO2, 10-30% B2O3, 1-7% P2O5, 0-3% Li... | 01/11/2005 |
| 6818578 | Optical glass and process for the production of optical products An optical glass having high-refractivity and low-dispersion optical properties and having a low glass transition point so that a heat-treating furnace can be operated for a long period of time. The optical glass has a refractive index nd of at least 1.875, an Abbe'... | 11/16/2004 |
| 6753278 | Optical glasses and their uses The optical glass has an index of refraction (nd) greater than or equal to 1.70, an Abbé number (νd) greater than or equal to 35 and a density (ρ) less than or equal to 4.5 g/cm3. Optical elements made with this optical glass are ... | 06/22/2004 |
| 6656859 | Tellurite glasses and optical components A family of tellurite glasses and optical components for telecommunication systems, the glasses consisting essentially of, as calculated in cation percent, 65-97% TeO2, and at least one additional oxide of an element having a valence greater th... | 12/02/2003 |
| 6653251 | Optical amplifying glass and method for its production An optical amplifying glass having Er doped in an amount of from 0.01 to 10% as represented by mass percentage to a matrix glass comprising, by mol %, BiO2 : 20 to 80, B2 O3 +SiO2 : 5 to 75, Ga2 O | 11/25/2003 |
| 6645894 | Optical glass and optical part An optical glass that substantially does not contain any Ta2 O5 and has high-refractivity low-dispersion optical properties and various optical parts made of such optical glass are provided stably at a low cost, and an optical part m... | 11/11/2003 |
| 6558316 | Endoscope optical system including composition having durability to a sterilization treatment A composition has a durability to a sterilization treatment using vapor under high temperature and pressure and capable of transmitting or absorbing light. The composition comprises a group A including 15 to 23 mol % of lanthanum oxide, 3 to 8 mol % of ga... | 05/06/2003 |
| 6497962 | Low melting point glass for covering electrodes, and plasma display device A low melting point glass for covering electrodes, which contains Cu in a content as calculated as CuO within a range of from 0.1 to 0.9% by mass percentage and which contains neither Mo or Sb.... | 12/24/2002 |
| 6495482 | Glass composition A glass composition well suited for use in optical amplification consists of an erbium-doped borate glass composition comprising at least 30 mole percent of B2 O3, not over 30 mole percent of SiO2, preferably not over 5 mo... | 12/17/2002 |
| 6352950 | Tellurite glasses and optical components A family of alkali-tungsten-tellurite glasses that consist essentially of, as calculated in mole percent, 10-90% TeO2, at least 5% W03 and at least 0.5% R2 O where R is Li, Na, K, Cs, Tl and mixtures, that may contain a la... | 03/05/2002 |
| 6309989 | Tin-borophosphate glass and sealing material A tin-borophosphate glass of the present invention has main components of SnO, B2 O3, and P2 O5, consists essentially of, by mole % representation, 30-70% SnO, 5-30% B2 O3, and 24-45% (24% ... | 10/30/2001 |
| 6281151 | Transparent lanthanum fluoride glass-ceramics The present invention relates to a transparent glass-ceramic material which includes a glass matrix and a crystalline phase of lanthanum fluoride crystals in the glass matrix, where the transparent glass-ceramic material contains no silica. The present in... | 08/28/2001 |
| 6153127 | Optical thin film, forming composition thereof, and ultraviolet ray absorbing and thermic ray reflecting glass using the same The present invention relates to an optical thin film containing titanium oxide, cerium oxide and bismuth oxide, wherein the content ratio of the titanium oxide, cerium oxide, and bismuth oxide is within the area expressed by four-cornered shape ABCD cons... | 11/28/2000 |
| 5747397 | Optical glass High rare-earth content glasses (Ln2 O3 ࣙ20 mol %) have applications as high optical density wavelength-selective filters, faraday rotators, scintillation glasses and high index glasses. New glasses are formed by adding TiO2 | 05/05/1998 |
| 5693580 | Titanium sealing glasses and seals formed therefrom Alkaline-earth lanthanoborate sealing-glass compositions containing CaO, La2 O3, B2 O3, TiO2 and Al2 O3 in various combinations of mole-% are provided. These sealing-glass compos... | 12/02/1997 |
| 5665660 | Glass composition for bonding a phosphor and a fluorescent lamp The object of the present invention is to provide a glass composition which has a sufficient bonding strength for bonding a fluorescent film with a glass tube, does not hinder decomposition of the binder and is effective as an adhesive material, and to pr... | 09/09/1997 |
| 5648302 | Sealing glasses for titanium and titanium alloys Barium lanthanoborate sealing-glass compositions are provided comprising various combinations (in terms of mole-%) of boron oxide (B2 O3), barium oxide (BaO), lanthanum oxide (La2 O3), and at least one other oxi... | 07/15/1997 |
| 5643636 | Ceramic color composition and method for producing a glass sheet A ceramic color composition comprising from 5 to 34 wt % of a heat resistant color pigment powder, from 65 to 94 wt% of a bismuth type glass powder, from 0 to 10 wt % of a refractory filler powder, and from 0.1 to 20 wt % of at least one additive selected... | 07/01/1997 |
| 5464674 | Magnetic recording medium and method for its production A magnetic recording medium comprising a magnetic recording layer and at least one protective layer formed on the recording layer, wherein the outermost protective layer on the side exposed to air is made of an oxide film.... | 11/07/1995 |
| 5461021 | Metal borate composition A novel composition comprises aluminum borate and zirconium borate. Preferably, the composition is prepared by coprecipitation. The composition is useful as a sorbent or as a catalyst material.... | 10/24/1995 |
