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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8431500 | Lead-containing space glass, its production and its use The space glass has a composition, in wt. % based on oxide content, of: SiO2, 5-65; B2O3, 0-40; Al2O3, 0-12; PbO, 25-50; Na2O 0-8; K2O, 0-20; Σ alkali metal oxides, at least 0.25; and at l... | 04/30/2013 |
| 8431501 | Lead-containing space glass, its production and use The space glasses have a composition, in wt. % based on oxide content, including SiO2, 12-45; B2O3, 0-4; Al2O3, 0-4; TiO2, 0-5; PbO, 50-82; Na2O, 0-4; K2O, 0-8; and at least 0.1 ... | 04/30/2013 |
| 8193109 | Ceramic materials containing spherical shaped carbon particles Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 μm to 800 μm, a process fo... | 06/05/2012 |
| 7341966 | Borosilicate glass compositions and uses thereof Glass, glass compositions, methods of preparing the glass compositions, microfluidic devices that include the glass composition, and methods of fabricating microfluidic devices that include the glass composition are disclosed. The borosilicate glass composition incl... | 03/11/2008 |
| 7323427 | Boron aluminosilicate glass A short optical glass is disclosed which is particularly suited for the applications imaging, projection, telecommunication, optical information technology and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Pre... | 01/29/2008 |
| 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 |
| 7316740 | Lithium silicate materials Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength. ... | 01/08/2008 |
| 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 |
| 7144633 | Glass compositions Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. ... | 12/05/2006 |
| 7091143 | Glass funnel for cathode ray tube, and cathode ray tube A glass funnel suitable for a chemical strengthening method of an electric field application type without impairing the safety of a cathode ray tube. A glass funnel for a cathode ray tube, characterized in that glass at a body portion 3 contains at least Na | 08/15/2006 |
| 7074732 | Zinc-containing optical glass materials Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number νd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38–58, ZnO 0.3–42, PbO 0– | 07/11/2006 |
| 7041165 | Method for making cold-process bituminous mix The invention concerns a method for making cold-process bituminous mixes, using a bitumen-type emulsion in aqueous phase and aggregates. It consists of treating said aggregates with an agent providing hydrophobicity, prior to mixing said emulsion with said aggregate... | 05/09/2006 |
| 6989633 | Alkaline-earth aluminosilicate glass, containing CA and BA, suitable for use in lamp bulbs, and a lamp bulb containing same An alkaline-earth aluminosilicate glass having a composition (in % by weight, based on oxide) of SiO2>55-64; Al2O3 13-18; B2O3 0-5.5; M5O 0-7; CaO 5.5-14; SrO 0-8; BaO 6-17; ZrO2 0-2; CeO | 01/24/2006 |
| 6903038 | Glass with a minimal stress-optic effect A glass comprising in mole percent based on oxide: SiO2 | 06/07/2005 |
| 6865909 | Method of preparing CRT funnel glass capable of effectively recycling another glass member A method for producing CRT funnel glass having a glass composition containing MgO, CaO, SrO, BaO and ZnO as essential components. Further, the total content of MgO, CaO, SrO, BaO and ZnO falls within a range of 5 to 13 mass %. As a glass material of the CRT funnel g... | 03/15/2005 |
| 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 |
| 6642163 | CRT funnel of a non beam-index type A CRT funnel of a non beam-index type is made of a lead glass which contains 10-30 mass % of PbO and has an X-ray absorption coefficient of 40 cm-1 or more at 0.6 Å. The lead glass further contains Sb2 O3 and an additive ... | 11/04/2003 |
| 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 |
| 6437501 | CRT bulb glass containing PbO and Fe2O3 In an X-ray absorbing CRT bulb glass containing 10-40 weight % PbO and having an absorption coefficient not smaller than 40 cm-1 with respect to an X-ray having a wavelength of 0.6 angstrom, the glass contains 0.06-10 weight % Fe2 O | 08/20/2002 |
| 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 |
| 6416235 | Glass ferrule optical fiber connectors The specification describes processes for the manufacture of glass ferrules for optical fiber connectors wherein the glass ferrules have a composition comprising silicon oxide, alkali metal oxide, and aluminum oxide to which is added 1-35% of lead oxide.... | 07/09/2002 |
| 6251811 | Funnel glass for a cathode ray tube A funnel glass containing PbO for a cathode ray tube, wherein when the composition is represented by wt % based on oxides, the content of SrO is at least 1.0 wt %, the content of BaO is at least 1.0 wt %, and the ratio of the content of PbO to the total a... | 06/26/2001 |
| 6218775 | Cathode ray tube neck glass A cathode ray tube with an improved tubular glass neck member having a softening point in the range of 640-650° C., an annealing temperature in the range of 460-472° C., a strain point in the range of 420-425° C., a coefficient of thermal expansion in ... | 04/17/2001 |
| 5807611 | Electronic coatings The present invention relates to a ceramic coating composition comprising a preceramic material such as silicon oxide precursors, silicon carbonitride precursors, silicon carbide precursors, and silicon nitride precursors and a flux material such as B | 09/15/1998 |
| 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 |
| 5475528 | Optical signal amplifier glasses An optical signal amplifier comprising an optical waveguide fiber integrated by thallium ion exchange in a boron-free silicate glass doped with up to 5 weight % erbium oxide, the glass having a base composition, as calculated in weight percent on an oxide... | 12/12/1995 |
| 5449645 | Glasses with PBS and/or PBSE crystals This invention is directed to the production of glass bodies containing crystallites of PbS and/or PbSe. The crystallite-containing bodies are formed by the thermal crystallization in situ of glass bodies having compositions essentially free from CdO and ... | 09/12/1995 |
| 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 |
| 5366939 | Gradient index optical element A gradient index optical element for use in optical lens such as a camera or microscope is disclosed. The optical element comprises at least one of first metal dopants selected from La, Zr, Sn, In, Y, Ge, Zn, Ba, Ca, As, Sr, Ga and Gd distributed in solve... | 11/22/1994 |
| 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 |
| 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 |
| 5206189 | Sol-gel method for the preparation of monolithic multicomponent oxide glasses An improved method for the production of a monolithic multicomponent oxide glass is achieved by forming an oxide host gel by a sol-gel process, placing the host gel in an aqueous solution of a salt of at least one metal selected from the group consisting ... | 04/27/1993 |
| 5192718 | Lead silicate glasses A family of lead silicate glasses particularly adapted to drawing of tubing for use in the neck section of a cathode ray tube. The glasses have internal liquidi below 750° C., electrical resistivities over 8.0 ohm-cm (Log R350° C.) and linear... | 03/09/1993 |
| 5140109 | Container package for semiconductor element Disclosed is a container package for a semiconductor element, which comprises a vessel having in the interior thereof a space for containing a semiconductor element, which comprises an insulating substrate and a lid member, an external lead terminal for c... | 08/18/1992 |
| 5073524 | Radiation-shielding glasses providing safety against electrical discharge and being resistant to discoloration Cerium-doped radiation-shielding glasses in the system of SiO2 -PbO-alkali metal oxides, with a high absorption coefficient for high-energy X-ray and/or gamma- and, respectively, neutron radiation which are resistant to discoloration and exhibi... | 12/17/1991 |
| 5057464 | Radiation shielding glass having an improved gamma irradiation browning and dielectric breakdown A radiation shielding glass consisting esentially of 40.0% to 60.0% SiO2, 25.0% to 45.0% of PbO, 1.5% to 2.0% CeO2, 4.5% to 12.0% Na2 O, 2.0% to 9.0% K2 O, 0% to 5.0% B2 O3, and 0% to 10.0%... | 10/15/1991 |
| 5047371 | Glass/ceramic sealing system The present invention relates to a glass/ceramic sealing system. A sealing glass having a coefficient of thermal expansion in excess of 160×10-7 in/in/° C. is provided. The glass is useful for matched sealing of copper and copper based alloys... | 09/10/1991 |
| 5039631 | Strengthenable, high non-nd lanthanoid-containing glasses A strengthened high lanthanide-containing glass has the composition of, in mole percent ______________________________________ SiO2 54-75 B2 O3 5-17 Li2 O 0-4 Na2 | 08/13/1991 |
| 4988376 | Glassification of lead and silica solid waste Lead or other heavy metals are rendered immobile for sanitary disposal by vitrifying the silica-based soil or other medium in which the lead or heavy metal is contained. The silica sand or other soil contaminated with lead is heated to the melting point o... | 01/29/1991 |
