Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7829489 | Low CTE photomachinable glass The present invention describes a composition, method and article for a photomachinable glass having a coefficient of thermal expansion from less than 6×10−6/° C. in the temperature range of 0° C. to 300° C. The photomachinable glass composition is ... | 11/09/2010 |
| 7799711 | Photomachinable glass compositions having tunable photosensitivity The invention is directed to photomachinable glass compositions having a controllable or tunable photosensitivity, and to a method for making such compositions. The compositions of the invention contain titania (TiO2) in an amount in the range of greater ... | 09/21/2010 |
| 7326500 | Sensitization of photo-thermo-refractive glass to visible radiation by two-step illumination Photo-thermo-refractive (PTR) glass is a multi-component silicate glass having photosensitivity in rear UV region. A novel process is disclosed for PTR glass sensitization to visible region by means of two-step illumination followed by thermal development. This disc... | 02/05/2008 |
| 7323426 | High strain point glasses A family of glasses from the SiO2—Al2O3—P2O5 ternary system exhibiting high strain point, transparency, and low coefficient of thermal expansion. The glasses have the following composition, expressed in mol ... | 01/29/2008 |
| 7315125 | Aluminum-free borosilicate glass and applications thereof The fluorescent lamp is made with an aluminum-free borosilicate glass having a composition, in percent by weight, based on oxide content of: SiO2, 65-77; B2O3, 7-20; Li2O, 0-2; Na2O, 0-4; K2O, 3-12; M... | 01/01/2008 |
| 7288495 | Photorefractive glass and optical elements made therefrom The present invention provides an alkali alumino-silicate Na—F-containing glass material and a method of making the alkali alumino-silicate Na—F-containing glass material, with the glass material capable of being made photosensitive and thus formed into optical ... | 10/30/2007 |
| 7262144 | Photostructurable body and process for treating a glass and/or a glass-ceramic The invention relates to a photostructurable body, in particular glass or glass-ceramic, in which the glass is a multicomponent glass and/or the glass-ceramic is a multicomponent glass-ceramic, in each case having a positive change in refractive index Δn as a resul... | 08/28/2007 |
| 7230760 | Polarizers and isolators and methods of manufacture A passively aligned optical isolator includes laminated layers of material including two polarizing glass layers sandwiching a Faraday rotator layer. Each polarizing glass layer comprises a glass matrix containing elongated metal particles exhibiting a change in pol... | 06/12/2007 |
| 7166549 | Antimicrobial, anti-inflammatory, wound-healing and disinfecting glass and use thereof The invention relates to an antimicrobial, anti-inflammatory and disinfecting glass, whereby the glass comprises: 30–95 wt. % SiO2,0–40 wt. % Na 2O, 0–40 wt. % K2O, 0–40 wt. % Li2O, 0–35 wt. % CaO, 0–10 wt. % M... | 01/23/2007 |
| 7163904 | Colorless glasses/borosilicate glasses with special UV-edge A borosilicate glass, having a spectral edge wavelength in a UV range of 280 to 325 nm, which can be set in a simple and defined manner, with the composition in percent by weight on an oxide basis of 60–75% SiO2, 10–15% B2O3, 5â€... | 01/16/2007 |
| 7144835 | Aluminum-free borosilicate glass and applications thereof The aluminum-free borosilicate glass has a composition in percent by weight based on oxide content of: SiO2, 65–77; B2O3, 7–20; Li2O, 0–2; Na2O, 0–4; K2O, 3–12; MgO, 0–2; CaO, 0–2; with ... | 12/05/2006 |
| 7144834 | Optical colored glass, its use, and an optical long-pass cutoff filter The invention concerns an optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30–75; K2O 5–35; B2O3>4–17; ZnO 5–37; F 0.01–10; CdO 0.1–1, S+Se+Te 0.1–1.5 | 12/05/2006 |
| 7110179 | Polarizers and isolators and methods of manufacture Polarizing glass articles, optical isolators including polarizing glass articles, and methods of manufacturing polarizing glass articles and optical isolators are disclosed. The methods manufacture can be used to manufacture isolators exhibiting improved contrast ra... | 09/19/2006 |
| 7104090 | Method of making polarizing glasses Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. The method involves forming a polarizing layer on the surface of the glass article by ion-exchanging silver or copper into the surface. ... | 09/12/2006 |
| 7087543 | Optical glass, press-molding preform and optical element An optical glass having a refractive index (nd) of 1.57 to 1.67, an Abbe's number (νd) of 55 to 65 and a glass transition temperature (Tg) of 560° C. or lower and having a low-temperature softening property and excellent climate resistance or a haze value of 3% or... | 08/08/2006 |
| 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 |
| 6996324 | Optical waveguide and method for fabricating the same An optical waveguide comprising cladding 1 and core segment 20 buried in cladding 1 and serving as a waveguide, wherein a combination of glass material constituting the core segment 20 and another glass material constituting the cladding ... | 02/07/2006 |
| 6974358 | Discrete magnets in dielectric forming metal/ceramic laminate and process thereof The present invention relates generally to a new dielectric forming metal/ceramic laminate magnet and process thereof. More particularly, the invention encompasses a new process for fabrication of a large area laminate magnet with a significant number of holes, inte... | 12/13/2005 |
| 6967249 | Photochromic 3H-naphtho[2,1-b]-pyran compounds and photochromic articles produced therewith Specific photochromic 3H-naphtho[2,1-b]-pyran compounds useful with various types of synthetic resin materials to form photochromic articles, especially ophthalmic lenses, and photochromic articles formed with such compounds. The compounds of the invention have espe... | 11/22/2005 |
| 6929861 | Anti-reflective glass surface with improved cleanability A low reflectance glass surface with improved cleanability is disclosed which includes a particular combination of surface structures which produce a low reflectance yet high clarity glass. The surface structure includes a plurality of islands distributed at a densi... | 08/16/2005 |
| 6920765 | Combined advanced finishing and UV laser conditioning process for producing damage resistant optics A method for reducing the density of sites on the surface of fused silica optics that are prone to the initiation of laser-induced damage, resulting in optics which have far fewer catastrophic defects, and are better capable of resisting optical deterioration upon e... | 07/26/2005 |
| 6914024 | Glass beads and uses thereof In one aspect, the invention provides glass beads and optical devices comprising the glass beads. In other aspects, the invention provides methods of making said glass beads and rapid glass screening methods that use glass beads. Glass beads of the invention compris... | 07/05/2005 |
| 6887808 | Infrared broadband dichroic glass polarizer Polarized glass articles having a wavelength range that is broadened for high contrast-ratio applications. A method that imparts to a glass article a high contrast ratio of at least 40 dB for use as dichroic glass polarizers over a wavelength range of 880 nm to 1,69... | 05/03/2005 |
| 6844277 | UV photosensitive melted glasses The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 300 nm. | 01/18/2005 |
| 6828262 | UV photosensitive melted glasses The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate and germanosilicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelen... | 12/07/2004 |
| 6777359 | Polarizing glass and preparation method thereof A polarizing glass comprising geometrically anisotropic particles dispersed in an oriented manner in at least the surface of a glass base body. The glass base body is denoted by the weight percentages of 50-65 percent SiO2, 15-22 percent B2O | 08/17/2004 |
| 6762875 | Creating refractive index changes in glass by up-conversion of rare earth ions A method for creating refractive index changes in a substrate is provided by irradiating the substrate with infrared (IR) or visible light radiation. Ultra-violet (UV) radiation is generated in the substrate responsive to the IR or visible light radiation such that ... | 07/13/2004 |
| 6606885 | Infrared, glass polarizer and method A glass polarizer and a method of making the polarizer, the polarizer being produced from an R2 O--Al2 O3 --B2 O3 --SiO2 glass containing limited amounts of ZrO2 and TiO2, ... | 08/19/2003 |
| 6608215 | Oxygen-containing heterocyclic fused naphthopyrans Novel naphthopyrans having an oxygen-containing heterocyclic group F annelated on the f, i, j, or k side of the naphthopyran ring. These naphthopyrans may have the formula (I) presented below: ##STR1## These compounds (I) have interesting photochromic pro... | 08/19/2003 |
| 6562523 | Direct write all-glass photomask blanks A narrowly defined range of zinc silicate glass compositions is found to produce High Energy Beam Sensitive-glass (HEBS-glass) that possesses the essential properties of a true gray level mask which is necessary for the fabrication of general three dimens... | 05/13/2003 |
| 6344424 | Low melting point glass, insulating package, and sealing member An insulating package is provided with an insulating base having a bottom plate and frame body, electrodes led from the inside to the outside of the insulating base, and a metal cap to seal the frame body. The metal cap is adhered to the frame body by low... | 02/05/2002 |
| 6342459 | Photochromic naphthopyrans The present invention relates to photochromic 2H-naphtho[1,2-b]pyrans as well as their use in synthetic resins of all types, especially for ophthalmic purposes. In particular, the present invention relates to photochromic naphthopyran compounds, for which... | 01/29/2002 |
| 6312811 | Photochromic naphtho [2,1-b]pyran compounds containing bithienyl or terthienyl substituents, process for their manufacture, and photochromic materials and articles obtained The photochromic compounds of the invention correspond to the formula: ##STR1## in which Th2 represents a bithienyl group in one of the positions 5 to 10 of the naphthenic ring system system, R1 denotes a bithienyl or trithienyl grou... | 11/06/2001 |
| 6228787 | Fluorescent photosensitive glasses and process for the production thereof This invention relates to fluorescent photosensitive glasses and a process for the production thereof. The fluorescent photosensitive glasses according to the present invention employ silicate or phosphate glass compositions including minor amounts of one... | 05/08/2001 |
| 6221480 | Broadband contrast polarizing glass A polarizing glass article, and a method of making the article, that exhibits a broad band of high contrast polarizing properties in the infrared region of the radiation spectrum, that is phase-separated by precipitating silver, copper, or copper-cadmium ... | 04/24/2001 |
| 6197711 | Protective filter lens An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0.25-0.40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 4... | 03/06/2001 |
| 6177371 | Photochromic glass and lens A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R2 O--Al2 O3 --B2 O3 --SiO2 base compositions, contain silver chloride and bromide contents as ph... | 01/23/2001 |
| 6165922 | Photochromic glass and lens A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R2 O--Al2 O3 --B2 O3 --SiO2 base compositions, contain silver chloride and bromide contents as ph... | 12/26/2000 |
| 6162749 | Photochromic glasses The invention concerns photochromic glasses with improved properties having the following composition, in wt. %: SiO2 : 51-66, B2 O3 : 15-23, Al2 O3 : 3-10, ZrO2 : 2.5-11, TiO2 : 0-1,... | 12/19/2000 |
| 6156684 | Light polarization control element using stress-optical coefficient glass and method of producing the stress-optical coefficient glass In a light polarization control element using a stress-optical coefficient glass, the stress-optical coefficient glass is substantially composed of a phosphorous acid glass containing 20 to 60 percent by weight of P2 O5 and 40 to 73 ... | 12/05/2000 |
