Class 501/74 - And lead

Subclass of Class 501 - Compositions: ceramic
Definition: Compositions which contain lead or a lead compound.
No. of patents: 99
Last issue date: 01/22/2008

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Number	Title	Issue Date
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
7208431	Glass with noticeably improved stability to radiation damaging, a process for its production as well as its use A glass with high internal transmission as well as low tendency to radiation-caused physical compaction and low tendency to solarization, comprising 18 to 31% by weight of SiO2, 0 to 7% by weight of Na	04/24/2007
7072562	Optical fibers made from multicomponent glass The stepped optical fiber has a core glass member and a surrounding cladding glass member. It has a high numerical aperture (NA)≧0.50. The core glass member preferably has a zinc-containing composition including, in % by weight, SiO2, 42 to 53; ZnO, 16 ...	07/04/2006
7057815	Optical glass for polarizing optical system, production process therefor and polarizing beam splitter An optical glass for polarizing optical system having a photoelastic constant C in the range of −0.2 to +0.5 [10−8 cm2/N] with respect to a wavelength of 633 nm, the optical glass having the following composition (1): composition (1)...	06/06/2006
6987358	Glass for covering electrodes, colored powder for covering electrodes and plasma display device A glass for covering electrodes, which consists, as represented by mass percentage based on the following oxides, essentially of from 35 to 55% of PbO, from 15 to 30% of B2O3, from 4 to 15% of SiO2, from 20 to 44% of B2O	01/17/2006
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
6911160	Phosphate glass for use in the manufacture of ultra-short length lasers and amplifiers A high-gain phosphate glass composition, which can be used to produce ultra-short gain length lasers and optical amplifiers is described wherein the composition of the glass in addition to exhibiting high gain for lasers and amplifiers, also exhibits high thermal sh...	06/28/2005
6903038	Glass with a minimal stress-optic effect A glass comprising in mole percent based on oxide: SiO2	06/07/2005
6873104	Glass paste composition for forming dielectric layer on electrodes of plasma display panel The present invention relates to a plasma display panel comprising transparent electrodes and a dielectric layer covering said transparent electrodes on at least one substrate of a pair of substrates facing each other with a discharge space therebetween, the main co...	03/29/2005
6806216	Zinc-containing optical glass materials Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number vd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-	10/19/2004
6617789	Glass for covering electrodes and plasma display panel A glass for covering electrodes, which consists, as represented by mass percentage based on the following oxides, essentially of:...	09/09/2003
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
6468935	Optical glass An optical glass comprises the following composition in mass percent of: SiO2 18-29%; PbO 68-78%; and TeO2 0.1-3.5%; wherein the glass has optical constants which are a refractive index (nd) having a range of 1.75 to 1.87 and an Abbe...	10/22/2002
6436857	Large photosensitivity in lead silicate glasses The present invention provides a method for inducing a refractive index change in a lead silicate glass material comprising: providing a lead silicate glass material; and irradiating the lead silicate glass material to increase the index of refraction of ...	08/20/2002
6432854	Optical glass for polarizing optical system, production process therefor and polarizing beam splitter An optical glass for polarizing optical system having a photoelastic constant C in the range of -0.2 to +0.5 [10-8 cm2 /N] with respect to a wavelength of 633 nm, the optical glass having the following composition (1): composition (1...	08/13/2002
6432853	Medium expansion leaded copper boroaluminosilicate glasses The present invention is directed at a leaded copper boroaluminosilicate glass, having coefficients of thermal expansion (CTES) of between 25-55×10-7 /°C. (over a range of 25-300° C.) and a softening point in the range of 550-725° C., being...	08/13/2002
6420291	Lead silicate glass and a process for setting a reduced surface resistance of the lead silicate glass The invention relates to a lead silicate glass, to the use thereof for the production of secondary electron multipliers, and to a process for setting a reduced surface resistance of a lead silicate glass of this type. The lead silicate glass has the follo...	07/16/2002
6333116	Crystallizing glass frit composition for forming glass rib structures A lead silicate glass frit composition particularly useful for the formation of dielectric layers and barrier ribs in plasma display panels....	12/25/2001
6255598	Terminal assembly and method of forming terminal assembly A primarily polycrystalline but partially amorphous electrical insulator can hermetically seal first and second spaced electrical terminals, one made from an anodized aluminum and the second made from a beryllium copper or Kovar or an alloy of beryllium, ...	07/03/2001
6150027	Glass composition, structure, and apparatus using the same Provided are a glass such as a sealing glass which contains a rare earth element and crystalline particles, a structure made by sealing with said sealing glass, a magnetic head made by bonding using said sealing glass, and a magnetic recording and reprodu...	11/21/2000
6132643	Fluorescent photosensitive vitroceramics and process for the production thereof This invention relates to fluorescent photosensitive vitroceramics and the process for the production thereof. The fluorescent photosensitive vitroceramics according to the present invention employ fluorosilicate glass compositions including various photo...	10/17/2000
6086662	Low fusing dental porcelains containing tetragonal rubidium-leucite A dental porcelain composition, comprising a glassy matrix and rubidium leucite crystallites embedded therein, and having maturing temperatures in the range from about 650° C. to about 800° C. and CTEs in the range from about 13 to about 17, more prefer...	07/11/2000
5948536	Glass composition for substrates with a built-in lead base dielectric material, and multilayer substrate with a built-in capacitor A glass composition for a substrate with a built-in lead-dielectric material, containing up to 35 mol % calculated as Al2 O3 of aluminum oxide, 20 to 60 mol % calculated as CaO of calcium oxide, and 8 to 40 mol % calculated as SiO	09/07/1999
5683616	Process for preparing ceramic-like materials and the ceramic-like materials This invention relates to a process for preparing ceramic-like materials with specific properties by binding an inorganic filler in the form of a dry composition with a grain size of up to 25 μm containing in the volume ratio 1:0.-1.52 a waste phosphogyp...	11/04/1997
5679144	Powder composition for the preparation of an opaque dental porcelain in the form of a paste A powder composition for the preparation of an opaque dental porcelain, containing as its components one or more feldspar frits consisting of a number of feldspar frits of different chemical compositions and different physical properties; CeO2 as th...	10/21/1997
5622904	Glass material for molding optical elements A glass material for molding an optical element and including lead and a lead compound is processed chemically and physically and includes a modificative ion component set such that an atomic concentration of the modificative ion component in a range of 6...	04/22/1997
5565389	Ophthalmic glass of high refractive index The invention relates to a glass of high refractive index suitable for the close-vision part of multifocal, in particular phototropic multifocal, spectacle lenses. The glass has a composition (in % by weight, based on oxide) of: SiO2 28-40; B	10/15/1996
5420080	Wavelength up-conversion transparent glass ceramics A high efficiency wavelength up-conversion transparent glass ceramics composition is provided containing a rare earth ion, which can be applied to short wavelength solid lasers, full color displays, infrared light detecting sensors, etc. The ceramic compo...	05/30/1995
5397830	Dielectric materials The present invention provides new and improved dielectric materials. In one preferred embodiment such novel dielectric material is formed by firing a composition including a glass composition comprising in weight percent from about 22% to about 45% ZnO, ...	03/14/1995
5336644	Sealing glass compositions A sealing glass composition suitable for bonding ceramic surfaces at low temperatures and which includes in weight percent 5-50% thallium oxide, 10-40% vanadium oxide, 5-30% tellurium oxide, 1.5-15% arsenic oxide and 1-5% phosphorous oxide. Other additive...	08/09/1994
5308652	Process for treating lead glass to form a lead diffusion barrier in the surface thereof Articles formed of lead glass or crystal are treated in order to minimize the tendency for the article to leach lead or other heavy metals into products, such as alcohols or acidic foods, placed in contact therewith. In a preferred embodiment, flasks form...	05/03/1994
5302557	Automotive glass thick film conductor paste Thick film paste composition for applying conductive patterns to automotive window glass comprising finely divided particles of metallic silver, glass frit having transition metal oxide, contained in the glass, all of the particulate solids being disperse...	04/12/1994
5286269	Production of composite glass powder of any desired particle size from a particulate multicomponent mixture For the production of a composite glass powder of any particle size from a fine particle size, multi-component mixture of a low-melting glass powder, fillers, and additives, the fine particle size, multicomponent mixture is sintered for 10-60 minutes at a...	02/15/1994
5283212	Thallium germanate, tellurite, and antimonite glasses This invention relates to thallium tellurite glasses possessing a high Verdet constant and high optical nonlinearity, as well as good visible and infrared transmission, making them suitable materials for the fabrication of active optical devices. The glas...	02/01/1994
5273948	Bonding glass for assembling a magnetic head, and a magnetic head A bonding glass for assembling a magnetic head by bonding a magnetic core to a non-magnetic ceramic slider. The magnetic core has a gap and an Fe-Al-Si film within the gap. The bonding glass includes SiO2 in the range of 6 to 11 wt %, B2	12/28/1993
5264156	Resistor composition for producing thick film resistors A resistor composition comprising a pyrochlore-related oxide a glass frit and, anorthite as a finely-divided filler. The resistor composition exhibits high tolerance in respect to firing temperatures. Thick film resistors obtained therefrom by firing on, ...	11/23/1993
5256606	Moisture resistant low melting point glass for magnetic head and magnetic head The present invention relates to a moisture resistant low melting point glass composition for a magnetic head and a magnetic head utilizing it. Said glass composition may be composed of 28-35% PbO, 38-50% SiO2, 3-10% R2 O, 3-8% TeO	10/26/1993
5244484	Process for producing a curved glass plate partially coated with a ceramic A process for producing a curved glass plate, which comprises coating a crystallizable ceramic color composition to a predetermined portion of a glass plate, followed by baking at a temperature of from 500° to 620° C. to fuse the ceramic color compositi...	09/14/1993
5168079	Thallium gallate glasses This invention relates to glasses exhibiting very high optical non-linearity, very high Verdet constants, very high electro-optic constants, and excellent transmissions of infrared radiation. The glasses consist essentially, in cation percent, of: ...	12/01/1992
5148510	Optical fiber made of galliobismuthate glasses and optical devices using same This invention is drawn to heavy metal oxide glasses exhibiting high nonlinear susceptibility and infrared transmission consisting essentially, in weight percent, of 42-48% PbO, 33-44% Bi2 O3, 10-15% Ga2 O3, and...	09/15/1992

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Class 501/74 - And lead