And Rare Earth (i.e., Elements With Atomic Number 39 Or 57-71) Patents (Class 501/78)
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Patent number: 4965229Abstract: The present invention relates to a glass ceramic which can provide a board comprising a metal substrate and the glass ceramic coated on said substrate, particularly a board comprising said board and a fine wiring pattern applied onto said board by means of thick film printing. In particular, it specifies the composition of the glass ceramic.Type: GrantFiled: February 1, 1989Date of Patent: October 23, 1990Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Nishino, Yasuo Mizuno, Masaki Ikeda, Masahiro Hiraka
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Patent number: 4957883Abstract: An oxynitride glass, a process for preparing same and a fiber thereof, in the glass which has Si--M.sub.1 --M.sub.2 --O--N system and contains SiO.sub.2, Si.sub.3 N.sub.4 and M.sub.1 O in amounts which, as mole %, satisfy the following equations (a) and (b):(SiO.sub.2 +3Si.sub.3 N.sub.4 +M.sub.1 O) X 100 / (100+2Si.sub.3 N.sub.4)=65 to less than 100 (a)(SiO.sub.2 +3Si.sub.3 N.sub.4)/M.sub.1 O=0.7 to 2.3 (b)wherein M.sub.1 is Ca, or Ca and Mg; M.sub.2 is at least one of the metal selected from the group consisting of Al, Sr, La, Ba, Y, Ti, Zr, Ce, Na, K, Sb, B, Cr, Pb, V and Sn, said glass containing 0-40 mole% SiO.sub.2, 26-70 mole % CaO, 0-20 mole % MgO, and over O to not more than 22 at % M.sub.2.Type: GrantFiled: March 6, 1989Date of Patent: September 18, 1990Assignee: Shimadzu CorporationInventors: Junya Kobayashi, Masaaki Oota, Katsuhiko Kada, Hiroyoshi Minakuchi
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Patent number: 4929387Abstract: A low- or no-silica phosphate glass useful as a laser medium and having a high thermal conductivity, K.sub.90.degree. C. >0.8 W/mK, and a low coefficient of thermal expansion, .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.C., consists essentially of (on a batch composition basis):______________________________________ Mole % ______________________________________ P.sub.2 O.sub.5 45-70 Li.sub.2 O 15-35 Na.sub.2 O 0-10 Al.sub.2 O.sub.3 10-15 Nd.sub.2 O.sub.3 0.01-6 La.sub.2 O.sub.3 0-6 SiO.sub.2 0-8 B.sub.2 O.sub.3 0-8 MgO 0-18 CaO 0-15 SrO 0-9 BaO 0-9 ZnO 0-15 ______________________________________the amounts of Li.sub.2 O and Na.sub.2 O providing an average alkali metal ionic radius sufficiently low whereby said glass has K.sub.90.degree. C. >0.8 W/mK and .alpha..sub.20.degree.-40.degree. C. <80.times.10.sup.-7 /.degree.C., and wherein, when the batch composition is melted in contact with a silica-containing surface, the final glass composition contains at most about 3.Type: GrantFiled: April 3, 1989Date of Patent: May 29, 1990Assignee: Schott Glass Technologies, Inc.Inventors: Joseph S. Hayden, David L. Sapak, Julia M. Ward
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Patent number: 4900700Abstract: A ceramic composite containing less than 90% of a single phase silicon aluminum oxynitride and titanium nitride in an amount of up to about 10% by weight. Also disclosed are silicon nitride containing compositions for forming the composite and methods of producing the composite from the composition.Type: GrantFiled: May 31, 1988Date of Patent: February 13, 1990Assignee: Carboloy Inc.Inventors: Choll K. Jun, Milivoj K. Brun
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Patent number: 4880453Abstract: This invention is directed to a method for making a soda lime glass article having at least one surface which is essentially defect free and having a smoothness at least equivalent to that of a polished surface. The method generally comprises the steps of:(a) bringing together a body of a soda lime glass and a body of a glass consisting essentially, by weight, of 0.75-7.5% Li.sub.2 O and/or 18-27% PbO, the total Li.sub.2 O+PbO not exceeding 32%, 35-50% BaO, 0-5% Al.sub.2 O.sub.3, 30-50% B.sub.2 O.sub.3, and 5-10% SiO.sub.2, said glass having a softening point between 575.degree.-650.degree. C.Type: GrantFiled: December 19, 1988Date of Patent: November 14, 1989Assignee: Corning IncorporatedInventors: Frank Coppola, William H. Dumbaugh, Jr., William P. Ryszytiwskyj
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Patent number: 4877758Abstract: A lead-free frit suitable for use on aluminum, consisting essentially of:______________________________________ 33-42 wt. % SiO.sub.2 8-13 TiO.sub.2 0.5-2.5 SnO.sub.2 0.5-2.5 BaO 2.5-5.0 in the absence of Ce.sub.2 O.sub.3 ; 0-4.5 if Ce.sub.2 O.sub.3 is present. SrO 2.2-4.3 ZnO 13-26 Na.sub.2 O 4-9 K.sub.2 O 0.7-6.0 Li.sub.2 O 0.5-4.5 B.sub.2 O.sub.3 1.0-3.5 Sb.sub.2 O.sub.3 0-0.8 Ce.sub.2 O.sub.3 0.5-5.0 P.sub.2 O.sub.5 0.2-1.3 MoO.sub.3 ______________________________________The frit has a fusion temperature below about 1050.degree. F. and displays good qualities of gloss, acid resistance, and adhesion.Type: GrantFiled: December 22, 1988Date of Patent: October 31, 1989Assignee: Chi-Vit CorporationInventors: Paul R. Lee, Joseph P. Hingsbergen
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Patent number: 4859637Abstract: The present invention relates to an improved U.V. absorbing glass composition comprising from about 75 to about 98 parts by weight of a lead oxide free base glass having dissolved therein from about 2 to about 25 parts by weight of a U.V. additive selected from the group consisting of cerium oxide, manganese oxide, iron oxide, cobalt oxide, copper oxide, vanadium oxide, molybdenum oxide, and mixtures of two or more of said oxides; and to an ink composition comprising from about 15 to about 25% by weight vehicle, from about 8 to about 16% by weight a ceramic pigment, and from about 59 to about 77% by weight of said U.V. absorbing glass composition.Type: GrantFiled: December 17, 1987Date of Patent: August 22, 1989Assignee: Ferro CorporationInventor: Gordon J. Roberts
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Patent number: 4839314Abstract: This invention is directed to the production of glasses especially suitable for use as ophthalmic lenses which exhibit indices of refraction between about 1.699-1.703, Abbe numbers equal to or greater than 41.0, densities less than 3.25 g/cm.sup.3, and good resistance to attack by acids. The glasses are essentially free of Al.sub.2 O.sub.3 and consist essentially, in weight percent on the oxide basis, of:______________________________________ SiO.sub.2 33-37 CaO 8-9.5 B.sub.2 O.sub.3 7.5-13 SrO 2-4 SiO.sub.2 + B.sub.2 O.sub.3 44-48 La.sub.2 O.sub.3 12.3-14.5 Li.sub.2 O 5-8 ZrO.sub.2 4-6 Na.sub.2 O 0-2.5 Nb.sub.2 O.sub.5 8-10.5 K.sub.2 O 0-2 TiO.sub.2 5-7 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 5-8 As.sub.2 O.sub.3 0-0.8.Type: GrantFiled: May 6, 1988Date of Patent: June 13, 1989Assignee: Corning Glass WorksInventors: Jean E. Boudot, Jean P. Mazeau
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Patent number: 4820662Abstract: A silicophosphate laser glass having a composition comprising, in % by mole,45 to 70% P.sub.2 O.sub.5 ;5 to 20% SiO.sub.2 ;60 to 95% P.sub.2 O.sub.5 +SiO.sub.2 +Al.sub.2 O.sub.5 ;10%<Al.sub.2 O.sub.3 .ltoreq.20%;20%<(Al.sub.2 O.sub.3 +SiO.sub.2).ltoreq.30%;4 to 30% Li.sub.2 O+Na.sub.2 O+K.sub.2 O;0.01 to 12% Nd.sub.2 O.sub.3 ;0 to 5% La.sub.2 O.sub.3 +Y.sub.2 O.sub.3 +B.sub.2 O.sub.5 ;0 to 10% R'O; and0 to 1% Nb.sub.2 O.sub.5 +CeO.sub.2,wherein R' is Mg, Ca, Sr, Ba, Zn or Pb. The silicophosphate laser glass can construct an excellent laser glass as an amplifying medium.Type: GrantFiled: March 17, 1986Date of Patent: April 11, 1989Assignee: Hoya CorporationInventors: Tetsuro Izumitani, Michimasa Matsukawa, Chiemi Hata
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Patent number: 4820660Abstract: A transparent, semitransparent or opaline glass-ceramics containing calcium phosphate crystals uniform and very fine in grain size is obtained by heat-treating a glass essentially comosed of 38-52 wt % of SiO.sub.2, 4-16 wt % of P.sub.2 O.sub.5, 6-18 wt % of Al.sub.2 O.sub.3 (may partly be replaced by La.sub.2 O.sub.3), 20-33 wt % of CaO (may partly be replaced by MgO, BaO,SrO and/or ZnO), 4-17 wt % of ZrO.sub.2 (may partly be replaced by TiO.sub.2) and 0-0.5 wt % of alkali metal oxide(s), wherein the molar ratio of P hd 2O.sub.5 to ZrO.sub.2 is not greater than 3:1, at a temperature above the transition temperature and below the softening temperature of the glass. This glass-ceramics is excellent in refractoriness, electrical insulation resistance, chemical resistance and mechanical strength and has a relatively high coefficient of thermal expansion.Type: GrantFiled: December 22, 1987Date of Patent: April 11, 1989Assignee: Central Glass Company, LimitedInventors: Yoshio Mohri, Kinji Sano
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Patent number: 4814299Abstract: An optical glass, n.sub.d .gtoreq.1.60 and v.sub.d .gtoreq.58, having a high chemical stability as well as resistance to phase separation and crystallization, comprises in percent by weight:______________________________________ SiO.sub.2 21.5-27.0; B.sub.2 O.sub.3 23.5-30.0 SrO 16.0-24.0; La.sub.2 O.sub.3 10.0-20; Al.sub.2 O.sub.3 1.5-5.0; BaO 5.0-14.0; ZrO.sub.2 0-4.0; Li.sub.2 O 0.5-5.0; Na.sub.2 O 0.8-2.5; K.sub.2 O 0-2.0.Type: GrantFiled: July 2, 1987Date of Patent: March 21, 1989Assignee: Schott GlaswerkeInventors: Ludwig Ross, Volkmar Geiler
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Patent number: 4742028Abstract: This invention is concerned with a glass for optical and/or ophthalmic applications having an index of refraction between about 1.78-1.82, an Abbe number greater or equal to 31, and a density less than about 3.80 g/cm.sup.3 consisting essentially, expressed in terms of weight percent on the oxide basis, of:______________________________________ SiO.sub.2 15-30 CaO 15-28 B.sub.2 O.sub.3 2-17 SrO 0-11 SiO.sub.2 + B.sub.2 O.sub.3 24-36 BaO 0-11 Al.sub.2 O.sub.3 0-6.5 MgO + CaO + 16-33 SrO + BaO Li.sub.2 O 0-5 ZnO 0-11 Na.sub.2 O 0-5 La.sub.2 O.sub.3 16-30 K.sub.2 O 0-5 ZrO.sub.2 0-10 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 0-6 Nb.sub.2 O.sub.5 5-26 MgO 0-6 TiO.sub.2 0-14.Type: GrantFiled: June 20, 1986Date of Patent: May 3, 1988Assignee: Corning Glass WorksInventors: Jean E. Boudot, Jean P. Mazeau, Michel Prassas
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Patent number: 4734389Abstract: A highly refractive optical glass (n.sub.d .gtoreq.1.83) with high dispersion (v.sub.d .ltoreq.25) and very good chemical stability at relatively low density (.delta..ltoreq.3.5 g/cm.sup.3) consists of (in weight percent) SiO.sub.2 19-25, Na.sub.2 O 7-10, K.sub.2 O 4-7, Cs.sub.2 O 0-12, Cao 0.5-2.0, BaO 9-15, TiO.sub.2 25-30, ZrO.sub.2 0-6, Nb.sub.2 O.sub.5 16-20, WO.sub.3 0-3, with Nb.sub.2 O.sub.5 :TiO.sub.2 =0.6-0.71.Type: GrantFiled: February 7, 1986Date of Patent: March 29, 1988Assignee: Schott GlaswerkeInventors: Danuta Grabowski, Ludwig Ross, Volkmar Geiler
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Patent number: 4732875Abstract: To tellurite optical glass comprising TeO.sub.2, high valence components are added and may be a combination of La.sub.2 O.sub.3, at least one of B.sub.2 O.sub.3 and GeO.sub.2, and at least one of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5. The high valence components may include Y.sub.2 O.sub.3, Gd.sub.2 O.sub.3, and Yb.sub.2 O.sub.3. Amounts of TeO.sub.2 and La.sub.2 O.sub.3 are restricted to ranges between 10% and 80% and between 5% and 35%, respectively. A sum of B.sub.2 O.sub.3 and GeO.sub.2 must fall within a range between 1% and 30%, with an amount of GeO.sub.2 restricted between 0% and 22%. A total of La.sub.2 O.sub.3, Y.sub.2 O.sub.3, Gd.sub.2 O.sub.3, and Yb.sub.2 O.sub.3 must be between 5% and 50%. A sum of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5 should range from 1% to 26%, with individual amounts of Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.5 kept between 0% and 20% and between 0% and 26%, respectively.Type: GrantFiled: February 21, 1986Date of Patent: March 22, 1988Assignee: Hoya CorporationInventor: Koji Sagara
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Patent number: 4732876Abstract: An Ophthalmic and optical glass which is a B.sub.2 O.sub.3 - SiO.sub.2 - Li.sub.2 O - CaO - La.sub.2 O.sub.3 - TiO.sub.2 - ZrO.sub.2 -Nb.sub.2 O.sub.5 system in which relatively large amounts of B.sub.2 O.sub.3 and La.sub.2 O.sub.3 ingredients coexist has improved resistivity to devitrification while maintaining desirable optical constants, i.e., a refractive index (.eta.d) in the range of 1.75 to 1.84, Abbe number (.nu.d) in the range of 33 to 40 and specific gravity of 4.0 or less. Besides, the range of content of the Li.sub.2 O ingredient which is effective for the chemical strengthening treatment can be enlarged by this system of glass.Type: GrantFiled: May 28, 1987Date of Patent: March 22, 1988Assignee: Kabushiki Kaisha OharaInventors: Izumi Nagamine, Nobuhiro Nozawa
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Patent number: 4666871Abstract: A new type of glass, for example for use as a TL-envelope glass which as regards phosphor poisoning and Hg penetration has better properties than the present TL-envelope glasses. Phosphor poisoning occurs in particular upon fusing electrodes and bending and severing and bridging, respectively, during the manufacture of SL and PL lamps.Phosphor poisoning is controlled by incorporating little or no Na.sub.2 O in the glass. In order to nevertheless reach good processing properties, a combination of Li.sub.2 O and K.sub.2 O is used in the glass. The addition of only Li.sub.2 O or only K.sub.2 O does not result in a suitable glass.Hg penetration is controlled by the presence of a large quantity of alkaline earth metal oxides in the glass.The glass according to the invention has a good light transmission. A lamp comprising a lamp envelope of a glass according to the invention shows only a small luminous decline during operation of the lamp.Type: GrantFiled: December 14, 1984Date of Patent: May 19, 1987Assignee: U.S. Philips CorporationInventors: Gijsbertus A. C. M. Spierings, Eddy F. C. Van Hove
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Patent number: 4661284Abstract: Neodymium-doped phosphate glasses having a refractive index, nd>1.520; an Abbe number, Vd, <60; a density <3.0 g/cm.sup.3, a thermal expansion coefficient, .alpha., .ltoreq.110.times.10.sup.-7 .degree.C..sup.-1 ; a Young's Modulus, E, <70.times.10.sup.3 N/mm.sup.2 ; a Poisson's Ratio, .nu., <0.28; a thermal conductivity, K, >0.5 W/m.multidot.K, a thermal FOM=(1-.nu.).multidot.K/.alpha.E>0.7, consisting essentially of, in mol. %:P.sub.2 O.sub.5 : 40-70%SiO.sub.2 : 0-20%B.sub.2 O.sub.3 : 5-20%Sum SiO.sub.2 +B.sub.2 O.sub.3 : 5-35%Sum Li.sub.2 O+Na.sub.2 O+K.sub.2 O: 5-20%Sum La.sub.2 O.sub.3 +Nd.sub.2 O.sub.3 : 3-10%Sum MgO+CaO+SrO+BaO+ZnO: 0-10%and preferably containing an amount of Nd.sub.2 O.sub.3 effective for laser activity having an emission cross-section, .sigma., >3.5.times.10.sup.-20 cm.sup.2 ; a fluorescence linewidth (.DELTA..lambda..sub.f1)<23.5 nm; a first e-folding time of the Nd.sup.3+ fluorescence at 0.5 wt. % Nd.sub.2 O.sub.3 >375 .mu.Type: GrantFiled: September 25, 1985Date of Patent: April 28, 1987Assignee: The United States of America as represented by the United States Department of EnergyInventors: Lee M. Cook, Stanley E. Stokowski
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Patent number: 4642297Abstract: Optical glass compositions having refractive indexes of 1.60-1.69 and Abbe numbers higher than 54 as well as with a density of less than 3.4 g/cm.sup.3, and which are distinguished in that they have good chemical stability, comprising (in percent by weight): 5-30 percent SiO.sub.2 ; 20-55 percent B.sub.2 O.sub.3 ; 13-40 percent CaO; 3-25 percent La.sub.2 O.sub.3 ; and optionally one or more of the following: up to 7 percent ZrO.sub.2, up to 2 percent TiO.sub.2, up to 9 percent Al.sub.2 O.sub.3, up to 11 percent MgO, up to 10 percent ZnO, up to 10 percent SrO, and up to 12 percent BaO.Type: GrantFiled: January 17, 1983Date of Patent: February 10, 1987Assignee: Schott GlaswerkeInventors: Karl Mennemann, Danuta Grabowski geb. Marszalek
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Patent number: 4615989Abstract: An optical CuO-bearing, alkali- and alkaline-earth rich phosphate glass with relatively high elongation (at 20.degree.-300.degree. C. from 110.times.10.sup.-7 grd.sup.-1 to 138.times.10.sup.-7 grd.sup.-1) and a transformation range .ltoreq.380.degree. C., with substantially improved transmission in the UV to blue range of the spectrum (UV-transmission at .lambda.=350 nm between .gtoreq.69% and .gtoreq.83%) and a very strong absorption in the red region of the spectrum (IR-absorption at .lambda.=700 nm between .ltoreq.2% and .ltoreq.12%), consisting essentially of the following synthesis/composition, in wt. %: P.sub.2 O.sub.5 65-70%; SiO.sub.2 0-0.75%; B.sub.2 O.sub.3 0-2%; A.sub.2 O.sub.3 2.5-6%; R.sub.2 O (alkali metal oxides) 11-17%; BaO 3-9.5%; CeO.sub.2 0.45-2.0%; CuO 2.55-6.55%; Cl.sup.- 0.15-0.75%; F.sup.- 0.25-1.50%; refining agent 0.10-2.00% with .SIGMA.CeO.sub.2 +Al.sub.2 O.sub.3 +BaO+CuO.gtoreq.8.5 and .SIGMA.R.sub.2 O=F.sup.- +Cl.sup.- .gtoreq.21.Type: GrantFiled: April 17, 1985Date of Patent: October 7, 1986Assignee: Schott GlaswerkeInventor: Willy Ritze
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Patent number: 4612295Abstract: A glass for an eye glass lens comprising a SiO.sub.2 (or B.sub.2 O.sub.3)-CaO-Nb.sub.2 O.sub.5 system as a basic system and having a refractive index of 1.79 or more, an Abbe number of 32 to 38 and a specific gravity of less than 3.6 is disclosed.Type: GrantFiled: April 26, 1984Date of Patent: September 16, 1986Assignee: Hoya CorporationInventor: Hiroji Sagara
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Patent number: 4584279Abstract: Optical glass with refractive indicies.gtoreq.1.90, Abbe numbers.gtoreq.25 consisting essentially of, in weight percent; 0-10 SiO.sub.2, 2-20 B.sub.2 O.sub.3, 0-2 Al.sub.2 O.sub.3, the sum of SiO.sub.2, B.sub.2 O.sub.3, and Al.sub.2 O.sub.3 being 7.5-25, 1-16 TiO.sub.2, 0-10 ZrO.sub.2, 35-55 La.sub.2 O.sub.3, 0.5-10 Y.sub.2 O.sub.5, 0.5-15 Nb.sub.2 O.sub.5, 0-10 Gd.sub.2 O.sub.3, 0-15 Ta.sub.2 O.sub.5, 0-3 P.sub.2 O.sub.5 wherein the ratio of SiO.sub.2 to B.sub.2 O.sub.3 is between 0.1 and 1.6, and the sum of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5 is from 9 to 20%.Type: GrantFiled: November 20, 1984Date of Patent: April 22, 1986Assignee: Schott GlaswerkeInventors: Danuta Grabowski, Ludwig Ross, Volkmar Geiler, Karl Mennemann, Georg Gliemeroth
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Patent number: 4537862Abstract: Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1.9% by weight. The compositions contain B.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2 and rare earth oxides, the weight ratio of ZrO.sub.2 to rare earth oxides being critical and being about 1/1 to 1.4/1.Type: GrantFiled: April 27, 1984Date of Patent: August 27, 1985Assignee: Owens-Illinois, Inc.Inventors: Josef Francel, Uriah Horn, Daniel R. Stewart
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Patent number: 4526874Abstract: An optical glass with the familiar optical position of n.sub.d >1.70 and v.sub.d >22, which differs from the familiar optical glasses of the optical position due to its lower density and good chemical stability, and is composed of (in percent by weight): SiO.sub.2 25-42, TiO.sub.2 15-35, B.sub.2 O.sub.3 0.5-7, BaO 3-13, CaO 1-3, Nb.sub.2 O.sub.5 1-20, GeO.sub.2 0-2, Al.sub.2 O.sub.3 0-4, Na.sub.2 O 7.5-15, Li.sub.2 O 0-9, K.sub.2 O 2-10, SrO 0-6, ZnO 0-5, ZrO.sub.2 0-3, and WO.sub.3 0-3.Type: GrantFiled: April 27, 1983Date of Patent: July 2, 1985Assignee: Schott GlaswerkeInventors: Danuta Grabowski geb. Marszalek, Ludwig Ross, Volkmar Geiler, Karl Mennemann
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Patent number: 4521524Abstract: A glass filter for contrast enhancement in a color CRT display devices comprises100 parts by weight of a base glass comprising, in % by weight3 to 70% SiO.sub.2,0 to 40% B.sub.2 O.sub.3,0 to 23% Al.sub.2 O.sub.3,0 to 23% R.sub.2 O (R.sub.2 O being at least one selected from the group consisting of Li.sub.2 O, Na.sub.2 O and K.sub.2 O),2 to 35% RO (RO being at least one selected from the group consisting of MgO, CaO, SrO, BaO, ZnO and PbO),0 to 10% TiO.sub.2,0 to 10% ZrO.sub.2,0 to 35% La.sub.2 O.sub.3 and5 to 40% Nd.sub.2 O.sub.3,at least two coloring components selected form the group consisting of 6 parts by weight or less CeO.sub.2, 1.0 parts by weight or less CuO, 3.5 parts by weight or less MnO.sub.2, 0.15 parts by weight or less CoO, 3.0 parts by weight or less Fe.sub.2 O.sub.3, 1.5 parts by weight or less NiO and 5.0 parts by weight or less Pr.sub.6 O.sub.11, andat least one coloring component selected form the group consisting of CeO, CuO, MnO.sub.2 and CoO.Type: GrantFiled: September 21, 1982Date of Patent: June 4, 1985Assignee: Hoya CorporationInventor: Toshiharu Yamashita
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Patent number: 4520115Abstract: These objects have been attained by providing highly absorbent lead containing alkali metal silicate glasses for cathode ray tube image screens, having a linear absorption coefficient .mu. of >30 cm.sup.-1 (0.6 .ANG.) and with a high resistance to discoloration by X-ray and electron radiation, comprises, in weight percent:______________________________________ SiO.sub.2 20-65% P.sub.2 O.sub.5 + B.sub.2 O.sub.3 + Al.sub.2 O.sub.3 0-30% Li.sub.2 O 0-5% Na.sub.2 O 0-10% K.sub.2 O 0-15% MgO + CaO + ZnO 0-15% SrO 0-20% BaO 0-40% PbO 5-60% ZrO.sub.2 0-10% CeO.sub.2 0.1-5% Other Components 0-20%.Type: GrantFiled: August 2, 1983Date of Patent: May 28, 1985Assignee: Schott GlaswerkeInventors: Burkhard Speit, Karl Mennemann, Georg Gliemeroth
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Patent number: 4505569Abstract: A projection apparatus includes an optical system for forming an image of an object illuminated by an illumination source on a photosensitive member. In the projection apparatus according to the invention, at least one lens in the lens system disposed in the optical path extending from the illumination source to the photosensitive member is such lens which possesses a property of spectral transmission factor to compensate the spectral sensitivity of the photosensitive member.Type: GrantFiled: May 1, 1984Date of Patent: March 19, 1985Assignee: Canon Kabushiki KaishaInventors: Susumu Seto, Akihiko Toriumi
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Process for the preparation of mordenite utilizing transition metal complexes during crystallization
Patent number: 4500503Abstract: A series of transition metal complexes, having stability at relatively high pH, have been utilized as templates for the synthesis of mordenite type zeolites.Type: GrantFiled: July 20, 1983Date of Patent: February 19, 1985Assignee: Mobil Oil CorporationInventors: Lillian A. Rankel, Ernest W. Valyocsik -
Patent number: 4495298Abstract: A thallium-containing optical glass composition which comprises the following oxides in the indicated proportions in mole %: SiO.sub.2 35-80, Tl.sub.2 O 1-30, Tl.sub.2 O+R.sub.2 O (R being an alkali metal) 1-35, ZnO 0-35, GeO.sub.2 0-30, BaO 0-25, TiO.sub.2 0-20, MgO 0-20, B.sub.2 O.sub.3 0-less than 10, ZrO.sub.2 0-2, Al.sub.2 O.sub.3 0-8, SnO 0-5, CaO 0-10, SrO 0-10, PbO 0-10, La.sub.2 O.sub.3 0-5, Bi.sub.2 O.sub.3 0-8, and Ta.sub.2 O.sub.5 0-2, and satisfies the following relations:5.ltoreq.ZnO+GeO.sub.2 +BaO+TiO.sub.2 +MgO+B.sub.2 O.sub.3 .ltoreq.40,0.1.ltoreq.ZrO.sub.2 +Al.sub.2 O.sub.3 +SnO.ltoreq.8,and0.ltoreq.CaO+SrO+PbO+La.sub.2 O.sub.3 +Bi.sub.2 O.sub.3 +Ta.sub.2 O.sub.5 .ltoreq.10.Type: GrantFiled: May 11, 1982Date of Patent: January 22, 1985Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Takasi Yamagishi, Yukio Noguchi
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Patent number: 4481299Abstract: An optical glass comprising, in % by weight21.0 to 35.0% SiO.sub.2 ;0 to 10.0% B.sub.2 O.sub.3 ;0 to 4.0% Al.sub.2 O.sub.3 ;0.5 to 4.0% Li.sub.2 O;33.0 to 55.0% BaO+SrO+CaO+MgO+ZnO, with the proviso of19.0 to 45.0% BaO,0 to 15.0% SrO,0 to 20.0% CaO,0 to 5.0% MgO, and1.5 to 20.0% ZnO;8.0 to 23.0% La.sub.2 O.sub.3 ;2.0 to 8.0% ZrO.sub.2 ;0 to 10.0% TiO.sub.2 ;0 to 4.5% Nb.sub.2 O.sub.5 +Ta.sub.2 O.sub.5 ;0 to 5.0% WO.sub.3 ; and0 to 5.0% PbO.Type: GrantFiled: April 23, 1984Date of Patent: November 6, 1984Assignee: Hoya CorporationInventor: Hidemi Tajima
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Patent number: 4472511Abstract: Highly refractive, ThO.sub.2 -free optical glasses having refractive indices of 1.86-1.94 and Abbe-index numbers greater than or equal to 30, comprise:______________________________________ B.sub.2 O.sub.3 17-24 SiO.sub.2 0.5-6 B.sub.2 O.sub.3 + SiO.sub.2 19-27 La.sub.2 O.sub.3 40.1-51 ZrO.sub.2 5-9 Nb.sub.2 O.sub.5 0.5-25 Ta.sub.2 O.sub.5 0-27 Nb.sub.2 O.sub.5 + Ta.sub.2 O.sub.5 14-27 TiO.sub.2 0-8 PbO 0-12 ZnO 0-4 Al.sub.2 O.sub.Type: GrantFiled: September 22, 1982Date of Patent: September 18, 1984Assignee: Schott GlaswerkeInventors: Karl Mennemann, Danuta Grabowski
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Patent number: 4469800Abstract: This invention is concerned with the preparation of moldable optical glasses having refractive indices of about 1.65-1.735, dispersions of about 38-58, transition temperatures lower than about 500.degree. C., softening points lower than about 600.degree. C., and satisfactory chemical durability consisting essentially, expressed in terms of parts by weight as calculated from the batch, of______________________________________ B.sub.2 O.sub.3 22-38 BaO 3-33 La.sub.2 O.sub.3 5-33 PbO 0-36 ZnO 0-14 CdO 0-12 SrO 0-10 BaO + La.sub.2 O.sub.3 + PbO + ZnO + CdO + SrO 55-68 Li.sub.2 O 0-4 Na.sub.2 O 0-4 Li.sub.2 O + Na.sub.2 O 1.5-4 F 1-8.Type: GrantFiled: July 28, 1983Date of Patent: September 4, 1984Assignee: Corning Glass WorksInventors: Jean E. Boudot, Jean P. Mazeau
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Patent number: 4446241Abstract: Glass frits for use in glazes or enamels have fiber softening point about 535.degree.-609.degree. C. are free of lead, cadmium and zinc and consist essentially of Li.sub.2 O-B.sub.2 O.sub.3 -SiO.sub.3 plus 2-23% SnO.sub.2 +CaO and 2-23% ZrO.sub.2 +La.sub.2 O.sub.3 ; also, Al.sub.2 O.sub.3, SrO, BaO, Na.sub.2 O, F.Low expansion filler, e.g., B-eucryptite, may be used at 4 to 15% by weight of glass frit.Type: GrantFiled: June 28, 1982Date of Patent: May 1, 1984Assignee: Owens-Illinois, Inc.Inventors: Josef Francel, Daniel R. Stewart, Uriah Horn
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Patent number: 4439531Abstract: CdO- and ThO-free, highly refractive optical glass having a refractive index of 1.85-2.05 and an Abbe index of 25-43, characterized by the following composition (in percent by weight):______________________________________ SiO.sub.2 5-15 B.sub.2 O.sub.3 2.5-8 SiO.sub.2 + B.sub.2 O.sub.3 7-23 SiO.sub.2 /B.sub.2 O.sub.3 1.3-2.1 La.sub.2 O.sub.3 43-56 Gd.sub.2 O.sub.3 0-14 La.sub.2 O.sub.3 + Gd.sub.2 O.sub.3 43-60 ZrO.sub.2 3-10 Nb.sub.2 O.sub.5 0-15 Ta.sub.2 O.sub.5 0-20 Nb.sub.2 O.sub.5 + Ta.sub.2 O.sub.Type: GrantFiled: July 22, 1982Date of Patent: March 27, 1984Assignee: Schott GlaswerkeInventors: Karl Mennemann, Volkmar Geiler
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Patent number: 4404290Abstract: This invention relates to the production of glasses especially suitable for ophthalmic lenses, the glasses exhibiting refractive indices between about 1.695-1.705, dispersive indices between about 40.5-43.2, densities below about 3.2 g/cm.sup.3, weight losses as measured in the AO test of less than 0.15 mg/cm.sup.2, transmittances at 400 nm in 10 mm thickness of at least 75%, and consisting essentially, in weight percent of______________________________________ CaO 16-21.5 La.sub.2 O.sub.3 6-15 TiO.sub.2 3.5-<9 Al.sub.2 O.sub.3 5.5-12 Nb.sub.2 O.sub.5 3-11 ZrO.sub.2 2-10 B.sub.2 O.sub.3 20.5-25 SiO.sub.Type: GrantFiled: December 1, 1982Date of Patent: September 13, 1983Assignee: Corning Glass WorksInventor: Jean E. Boudot
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Patent number: 4400473Abstract: An improved optical glass having an index of refraction of .gtoreq.1.69, an Abbe number of .gtoreq.38, and a density of .ltoreq.3.25 g/cm.sup.3, represents a further development of another optical glass recently provided by the same inventors. The new glass has improved suitability for continuous-tank manufacture and increased acidproofness and differs from the other glass in its content of 0.5-4.0% by weight of P.sub.2 O.sub.5 ; its sum total of SiO.sub.2 +B.sub.2 O.sub.3 +Al.sub.2 O.sub.3 +P.sub.2 O.sub.5 being 38.5-41.5% by weight; and its sum total of MgO+CaO being 13-17.5% by weight. The full glass composition, e.g. is in % by weight:______________________________________ SiO.sub.2 26.0-32.5 B.sub.2 O.sub.3 6.0-12.0 Al.sub.2 O.sub.3 0-3.0 P.sub.2 O.sub.5 0.5-4.0 SiO.sub.2 + B.sub.2 O.sub.3 + Al.sub.2 O.sub.3 + P.sub.2 O.sub.5 = 38.5-41.5 Li.sub.2 O 0-5 Na.sub.2 O 0-6 K.sub.2 O 0-8 Li.sub.2 O + Na.sub.2 O + K.sub.2 O = 4.5-12.0 MgO 0-8 CaO 9-16 MgO + CaO = 13-17.Type: GrantFiled: June 2, 1982Date of Patent: August 23, 1983Assignee: Schott GlaswerkeInventors: Karl Mennemann, Georg Gliemeroth, Volkmar Geiler
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Patent number: 4396720Abstract: This invention is concerned with the production of substantially transparent glass-ceramic articles containing mullite as the predominant crystal phase which can be prepared by crystallizing in situ precursor glasses capable of being melted at temperatures no higher than 1650.degree. C. The inventive articles consist essentially, in weight percent, of 1070% SiO.sub.2, 7-40% B.sub.2 O.sub.3, 14-50% Al.sub.2 O.sub.3, 0-35% RO, wherein RO consists of at least one member of the group in the indicated proportions of 015% MgO, 0-20% CaO, 0-30% SrO, 0-30% BaO, and 0-30% PbO, and 0-30% R.sub.2 O, wherein R.sub.2 O consists of at least one member of the group in the indicated proportions of 0-10% Li.sub.2 O, 0-15% Na.sub.2 O, 0-25% K.sub.2 O, 0-25% Rb.sub.2 O, and 0-25% Cs.sub.2 O, the mole ratio Al.sub.2 O.sub.3 :RO+R.sub.2 O>1.3. Where 0.01-1% Cr.sub.2 O.sub.Type: GrantFiled: July 6, 1982Date of Patent: August 2, 1983Assignee: Corning Glass WorksInventors: George H. Beall, John F. MacDowell, Mark P. Taylor
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Patent number: 4390638Abstract: An optical and ophthalmic glass having an index of refraction of .gtoreq.1.69, an Abbe number of .gtoreq.37, and a density of .ltoreq.3.30 g/cm.sup.3, consists essentially of (in % by weight):______________________________________ SiO.sub.2 18-36 B.sub.2 O.sub.3 3-18 GeO.sub.2 0-8 Al.sub.2 O.sub.3 0-6, wherein SiO.sub.2 + B.sub.2 O.sub.3 + Al.sub.2 O.sub.3 + GeO.sub.2 25-39 P.sub.2 O.sub.5 0-14, wherein SiO.sub.2 + B.sub.2 O.sub.3 + Al.sub.2 O.sub.3 + GeO.sub.2 + P.sub.2 O.sub.5 = 30-44 Li.sub.2 O 0-12 Na.sub.2 O 0-14 K.sub.2 O 0-18 Li.sub.2 O + Na.sub.2 O + K.sub.2 O = 2-18 MgO 0-15 CaO 7-25 MgO + CaO 15-32 SrO 0-13 BaO 0-17 ZnO 0-15 PbO 0-10 SrO + BaO + ZnO + PbO 0-20 TiO.sub.2 3-14 Nb.sub.2 O.sub.5 0-13 WO.sub.3 0-10 TiO.sub.2 + Nb.sub.2 O.sub.5 + WO.sub.3 = 10-21 ZrO.sub.2 0-15, La.sub.2 O.sub.3 0-20 Y.sub.2 O.sub.3 0-16 Gd.sub.2 O.sub.3 0-16 Yb.sub.2 O.sub.3 0-10 La.sub.2 O.sub.3 + Y.sub.2 O.sub.3 + Gd.sub.2 O.sub.3 + Yb.sub.2 O.sub.3 = 0-20 Ta.sub.2 O.sub.5 0-13 HfO.sub.2 0-5 SnO.sub.2 0-6.Type: GrantFiled: July 13, 1981Date of Patent: June 28, 1983Assignee: Schott GlaswerkeInventors: Karl Mennemann, Georg Gliemeroth, Volkmar Geiler
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Patent number: 4366253Abstract: Phosphate glass compositions are described comprising from 8 to 35 wt % P.sub.2 O.sub.5, from 8 to 48 wt % SiO.sub.2 and GeO.sub.2, provided that the GeO content is not more than 6 wt %, from 3 to 18 wt % B.sub.2 O.sub.3, from 16 to 28 wt % Al.sub.2 O.sub.3, and from 8 to 33 wt % CaO, MgO, SrO, and BaO, provided that the sum of the MgO, SrO, and BaO contents is not more than 15 wt %, andwherein the sum of the above-described oxides comprises at least 88 wt % of the total composition and the ratio of the sum of the CaO, MgO, SrO and BaO contents to the P.sub.2 O.sub.5 content ranges from 0.6/1 to 1.Type: GrantFiled: August 11, 1980Date of Patent: December 28, 1982Assignee: Fuji Photo Film Co., Ltd.Inventor: Motohiko Yagi
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Patent number: 4343908Abstract: An optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.sub.D =59.5.+-.1.0, a high chemical stability and a low tendency to crystallization is provided, consisting essentially of (in percent. by weight):______________________________________ SiO.sub.2 23-27 B.sub.2 O.sub.3 24-30 SrO 18-31 La.sub.2 O.sub.3 10-16 Al.sub.2 O.sub.3 2-4 BaO 0-10 CaO 0-5 ZnO 0-6 Y.sub.2 O.sub.3 0-5 ZrO.sub.2 0-2 Li.sub.2 O, Na.sub.2 O and/or K.sub.2 O 0-1.5 As.sub.2 O.sub.3 and/or Sb.sub.2 O.sub.3 0-1 F and/or Cl 0-1, ______________________________________wherein the sum of SiO.sub.2 +B.sub.2 O.sub.3 is 50-53, the weight ratio SiO.sub.2 :B.sub.2 O.sub.3 is 0.8-1.0, the sum SrO+BaO is 26-31, and the sum ZnO+La.sub.2 O.sub.3 is 12-17.Type: GrantFiled: December 29, 1980Date of Patent: August 10, 1982Assignee: Schott GlaswerkeInventors: Marga Faulstich, Volmar Geiler
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Patent number: 4305757Abstract: A glass for use as an optical glass having an anti-blurring property, water resistance and hardness and decreased liquidus temperature, said glass consisting essentially of, in mol. %, 47 to 65% P.sub.2 O.sub.5, 0.5 to 12% SiO.sub.2, 0.5 to 10% B.sub.2 O.sub.3, 6 to 15% SiO.sub.2 +B.sub.2 O.sub.3, 0 to 30% alkali metal oxide, 5 to 35% alkaline earth metal oxide, 20 to 45% alkali metal oxide+alkaline earth metal oxide, 0 to 5% Al.sub.2 O.sub.3, 0 to 10% ZnO, and no PbO. Oxides of Ce, Nd and Er may also be present.Type: GrantFiled: July 7, 1980Date of Patent: December 15, 1981Assignee: Hoya CorporationInventor: Toshiharu Yamashita
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Patent number: 4297142Abstract: Low alkali, high phosphate and high Al.sub.2 O.sub.3 content glasses are described which are highly suitable for optical colored and filter glasses. They exhibit a glass transformation temperature Tg>450.degree. C. and have the following composition, in percent by weight:______________________________________ P.sub.2 O.sub.5 71.0-76.0 SiO.sub.2 0.25-2.5 B.sub.2 O.sub.3 2.4-3.75 Al.sub.2 O.sub.3 8.6-11.6 R.sub.2 O (alkali oxide) 1.25-6.5 CaO 0.5-1.65 MgO 2.0-3.5 Refining Agent 0.2-0.6 CeO.sub.2 0.1-0.4 F' 0.2-0.4 and CuO 1.0-10.0.Type: GrantFiled: June 16, 1980Date of Patent: October 27, 1981Assignee: Jenaer Glaswerk, Schott & Gen.Inventor: Willy Ritze
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Patent number: 4288250Abstract: A green contrast enhancement filter for CRT display devices which is prepared by adding about 0.1 to 1.5 part by weight of Cr.sub.2 O.sub.3, about 0 to 0.5 part by weight of CuO and about 0 to 0.2 part by weight of NiO to 100 parts by weight of a base glass comprising about 4 to 70% by weight of SiO.sub.2, about 15 to 30% by weight of Nd.sub.2 O.sub.3, about 0 to 25% by weight of one or more alkali metal oxides (R.sub.2 O) and about 0 to 46% by weight of one or more divalent metal oxides (RO) such as MgO, CaO, SrO, BaO, ZnO and PbO, wherein the sum R.sub.2 O+RO is about 10 to 50% by weight, about 0 to 25% by weight B.sub.2 O.sub.3, about 10% by weight or less Al.sub.2 O.sub.3 and about 0 to 10% by weight each of TiO.sub.2, ZrO.sub.2, La.sub.2 O.sub.3, Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5.Type: GrantFiled: March 20, 1980Date of Patent: September 8, 1981Assignee: Hoya CorporationInventor: Toshiharu Yamashita