Halogen Containing Patents (Class 501/25)
-
Patent number: 5735942Abstract: A novel silica based bioactive glass composition that can be used in conjunction with a delivery agent such as a toothpaste, gel saliva, etc. having a particle size range <90 .mu.m which will form a rapid and continuous reaction with body fluids due to the immediate and long term ionic release of Ca and P from the core silica particles, to produce a stable crystalline hydroxy carbonate apatite layer deposited onto and into the dentin tubules for the immediate and long term reduction of dentin hypersensitivity.Type: GrantFiled: July 16, 1997Date of Patent: April 7, 1998Assignees: USBiomaterials Corporation, University of MarylandInventors: Leonard J. Litkowski, Gary D. Hack, David C. Greenspan
-
Patent number: 5691254Abstract: In order to provide an enamel frit composition for a low-expansion crystallized glass, capable of producing an enamel coating excellent in abrasion resistance and acid resistance without occurrence of cracks by using glass powder which does not contain any harmful component such as PbO, and to provide an enamel-coated low-expansion crystallized glass plate using the enamel frit composition, the enamel frit composition for a low-expansion crystallized glass essentially consists 40-98 wt % glass powder, 1-55 wt % coloring pigment, and 0-54 wt % filler. The glass powder consists, by weight, of 55-72% SiO.sub.2, 4-8% Al.sub.2 O.sub.3, 14-22% B.sub.2 O.sub.3, 2-4% BaO, 5.1-15% Na.sub.2 O, 0-2% Li.sub.2 O, 0-2.8% K.sub.2 O, and 0-2% F.sub.2.Type: GrantFiled: November 26, 1996Date of Patent: November 25, 1997Inventors: Akihiko Sakamoto, Kiyoshi Katagi, Masayuki Ninomiya
-
Patent number: 5653791Abstract: A two-phase porcelain composition for dental restorations comprising a leucite crystallite phase dispersed in a feldspathic glass matrix, a maturing temperature of from about 750.degree. to about 1050.degree. C. and a coefficient of thermal expansion of from about 12.times.10.sup.-6 /.degree.C. to about 17.5.times.10.sup.-6 /.degree.C., said porcelain composition comprising:______________________________________ Component Amount (wt. %) ______________________________________ SiO.sub.2 57-66 Al.sub.2 O.sub.3 7-15 K.sub.2 O 7-15 Na.sub.2 O 7-12 Li.sub.2 O 0.5-3 CaO 0-3 MgO 0-7 F 0-4 CeO.sub.2 0-1 ______________________________________wherein the leucite crystallites possess diameters not exceeding about 10 microns and represent from about 5 to about 65 weight percent of the two-phase porcelain composition.Type: GrantFiled: March 12, 1996Date of Patent: August 5, 1997Assignee: Jeneric/Pentron, IncorporatedInventors: Carlino Panzera, Lisa M. DiMeglio
-
Patent number: 5616417Abstract: Lead-free glass frits having the following composition in weight percent:______________________________________ ZnO 25-35 SiO.sub.2 10-17 ZrO.sub.2 0-2 Al.sub.2 O.sub.3 0-4 Na.sub.2 O 8-12 B.sub.2 O.sub.3 20-30 Bi.sub.2 O.sub.3 6-25 F.sup.-1 1-5 ______________________________________are useful in the formulation of ceramic enamel compositions.Type: GrantFiled: June 12, 1996Date of Patent: April 1, 1997Assignee: Cerdec CorporationInventor: Joseph W. Ryan
-
Patent number: 5614330Abstract: An all-ceramic dental restoration comprising a ceramic core over and at least one coating thereon of a porcelain composition having a maturing temperature of from about 850.degree. to about 1050.degree. C. and a coefficient of thermal expansion of from about 4.0 to about 13 (room temperature to 500.degree. C.) parts per million per .degree.C. comprising:______________________________________ Component Amount (Wt. %) ______________________________________ SiO.sub.2 69-75 Al.sub.2 O.sub.3 4.0-9.5 Na.sub.2 O 5-10 K.sub.2 O 0-4 CaO 0-1.5 MgO 0-6 B.sub.2 O.sub.Type: GrantFiled: August 18, 1995Date of Patent: March 25, 1997Assignee: American Thermocraft CorporationInventors: Carlino Panzera, Jana N. Pruden, Richard A. Brightly
-
Patent number: 5589222Abstract: This invention relates to hydrophobic free-flowing pellets having an average particle size of 5 to 150 .mu.m, which consist of one or preferably more hydrophilic inorganic powders having a particle size of >0 to 30 .mu.m and contain one or more hydrophobic polyorganosiloxanes in a quantity of 0.03 to 15% by weight, to a process for their production and to their use.Type: GrantFiled: February 1, 1996Date of Patent: December 31, 1996Assignee: Ferro (Italia) S.r.l.Inventors: Peter Thometzek, Heinrich Christ
-
Patent number: 5559059Abstract: Lead-free glass frits having the following composition in weight percent:______________________________________ ZnO 25-35 SiO.sub.2 10-17 ZrO.sub.2 0-2 Al.sub.2 O.sub.3 0-4 Na.sub.2 O 8-12 B.sub.2 O.sub.3 20-30 Bi.sub.2 O.sub.3 6-25 F.sup.-1 1-5 ______________________________________are useful in the formulation of ceramic enamel compositions.Type: GrantFiled: May 22, 1995Date of Patent: September 24, 1996Assignee: Cerdec CorporationInventor: Joseph W. Ryan
-
Patent number: 5504045Abstract: A paint composition containing as a major portion a flux composition including a first flux containing silica, alkali oxide, zinc oxide and boron oxide but containing no lead or lithium and optionally a second flux, and minor portions of pigment and a liquid medium, particularly suited for automobile windshields.Type: GrantFiled: October 14, 1994Date of Patent: April 2, 1996Assignee: The O. Hommel CompanyInventors: Hasan B. Emlemdi, Robert M. Koceski, Harold C. Kersteen, Robert A. Prunchak, Matthew Sgriccia
-
Patent number: 5385871Abstract: This invention is directed to a glass frit composition essentially free from lead and cadmium exhibiting a linear coefficient of thermal expansion (25.degree. C.-300.degree. C.) between about 75-85.times.10.sup.-7 /.degree.C., good flow at temperatures between about 950.degree.-1000.degree. C., a softening point between about 650.degree.-725.degree. C., and excellent resistance to attack by alkaline detergent and hydrochloric acid, said frit consisting essentially, expressed in terms of weight percent on the oxide basis (except for the fluorine content), of______________________________________ SiO.sub.2 49-55 MgO 0-2 B.sub.2 O.sub.3 13-20 CaO 1-7 Al.sub.2 O.sub.3 4.5-7 SrO 0-8 Na.sub.2 O 5-8.5 BaO 0-11 K.sub.2 O 5-8.5 ZnO 0-2 Na.sub.2 O + K.sub.2 O 11-16 F 0.25-3.Type: GrantFiled: March 7, 1994Date of Patent: January 31, 1995Assignee: Corning IncorporatedInventors: Jaroslava M. Nigrin, Paul L. Rose
-
Patent number: 5382552Abstract: The present invention relates to a rare earth-containing, alkali silicate frit which may be applied to a metal substrate to provide a porcelain enamel coating which has good thermal stability, an acid resistance of A on the PEI scale and improved cleanability, wherein the frit contains, based on the total weight of the frit:______________________________________ Oxide Wt. % ______________________________________ R.sub.2 O 10-30 MgO 0-5 B.sub.2 O.sub.3 0-5 SiO.sub.2 45-60 TiO.sub.2 0-10 F 0.5-5 CoO 0-3 NiO 0-5 X 12-30 ______________________________________whereinR represents an alkali metal andX represents a rare earth oxide having an atomic number of 57-60, preferably cerium oxide.The present invention is also directed to porcelain enamel coatings, especially for appliances, prepared from this rare earth-containing, alkali silicate frit.Type: GrantFiled: September 14, 1993Date of Patent: January 17, 1995Assignees: Miles Inc., Whirlpool CorporationInventors: Elie E. Saad, Stuart W. Ries
-
Patent number: 5346866Abstract: A dental ceramic material is disclosed for the preparation and repair of metal ceramic and fully ceramic dentures, which has a processing temperature of 660.degree..+-.30.degree. C., and has the following composition: 60 to 65% by weight of SiO.sub.2, 8.5 to 11% by weight of Al.sub.2 O.sub.3, 8 to 12% by weight of K.sub.2 O, 10.5 to 12% by weight of Na.sub.2 O, 0.7 to 2% by weight of CaO, 0.5 to 2.5% by weight of B.sub.2 O.sub.3, 0.1 to 0.6% by weight of Sb.sub.2 O.sub.3, 0 to 0.5% by weight of CeO.sub.2, 1.0 to 3.8% by weight of TiO.sub.2, 0.8 to 1.4% by weight of Li.sub.2 O, and 0.6 to 2.4% by weight of F.sub.2.Type: GrantFiled: October 28, 1993Date of Patent: September 13, 1994Assignees: Degussa Aktiengesellschaft, Ducera Dental Gesellschaft mbHInventors: Ottmar Komma, Juergen Steidl
-
Patent number: 5342810Abstract: Zinc-containing, lead- and cadmium-free glass frits with a softening point of less than 510.degree. C. are disclosed. Obligatory components of the glass-frit composition are 31-50 mole % ZnO, 10-44 mole % SiO.sub.2, 11-35 mole % B.sub.2 O.sub.3 and 11-25 mole % Na.sub.2 O. The glass frits can be used as base frit for the production of decorative coating masses which can be stoved below 630.degree. C., preferably masses for the decorating of glass.Type: GrantFiled: March 1, 1993Date of Patent: August 30, 1994Assignee: Degussa AktiengesellschaftInventors: Bernard Merigaud, Michel Claus
-
Patent number: 5296415Abstract: A CeO.sub.2 -containing enamel frit is disclosed which, upon enamelling, produces an opaque enamel coating with excellent adhesion and acid resistance. The frit can be used to enamel an unpickled or lightly pickled steel plate or article.Type: GrantFiled: July 10, 1992Date of Patent: March 22, 1994Assignee: Bayer AGInventor: Wolfgang Podesta
-
Patent number: 5145804Abstract: Enamel frit powder for electrostatic application with a surface resistance greater than 10.sup.16 ohms containing alkaline oxides and alkaline oxides wherein the weight ratio of the alkaline oxides Na.sub.2 O:K.sub.2 O and the weight ratio of the alkaline earth oxides CaO:BaO is each about 1:1, containing______________________________________ % by weight ______________________________________ SiO.sub.2 36-40 Al.sub.2 O.sub.3 0-4 B.sub.2 O.sub.3 12-16 Na.sub.2 O 7-9 K.sub.2 O 7-9 ZrO.sub.2 5-10 CaO 4-6 BaO 4-6 P.sub.2 O.sub.5 0-1 CoO 1 NiO 2 MnO 0-2 CuO 0-2 F 0.1.Type: GrantFiled: December 15, 1987Date of Patent: September 8, 1992Assignee: Bayer AktiengesellschaftInventors: Hans-Joachim Schittenhelm, Werner Joseph
-
Patent number: 5075263Abstract: An enamel frit for producing an acid-resistant enamelled steel in a single coating comprising at least about 40% of silicon atoms, 50% of silicon atoms and boron atoms, where the proportion of the boron atoms should not fall below 6.5%, 63% of silicon atoms, boron atoms and sodium atoms, where the proportion of the sodium atoms should not fall below 7.5%, each relative to the overall total of the non-oxygen atoms in the frit, the proportion of the remaining non-oxygen atoms being less than about 37%, and 1.0 to 1.2% of cobalt atoms. In addition, there are (1) x fluorine atoms with 1%.ltoreq.x.ltoreq.11% and at least y lithium atoms and at most 2y lithium atoms with y=(15/x)+5 being present, the proportion of lithium atoms being from about 6.3% to 20% relative to the overall total of the non-oxygen atoms in the frit, or (2) y lithium atoms with 6.3%<y.ltoreq.Type: GrantFiled: December 21, 1990Date of Patent: December 24, 1991Assignee: Bayer AktiengesellschaftInventors: Hans-Joachim Schittenhelm, Werner Joseph
-
Patent number: 4970178Abstract: Lead-free glass frit compositions for use in vitreous coatings consisting essentially of Na.sub.2 O--ZnO--B.sub.2 O.sub.3 --SiO.sub.2 in appropriate concentrations including molar amounts of at most 17.5 mole percent of B.sub.2 O.sub.3 and at least 40 mole percent of SiO.sub.2.Type: GrantFiled: August 14, 1989Date of Patent: November 13, 1990Assignee: Ciba-Geigy CorporationInventors: David A. Klimas, Boyd R. Frazee
-
Patent number: 4965001Abstract: A novel lubrication blend useful per se as a lubricant or as an additive to form a novel lubricant composition. The lubrication blend consists essentially of a mixture of: (1) at least one complex sulfide of antimony, represented by the formula:Sb.sub.x S.sub.ywherein, x is a number in the range from about 1.7 to about 2.3, and y is a number in the range from about 3.6 to about 4.4, (2) at least one antimony oxide, and (3) at least one lamellar crystalline solid lubricant.Type: GrantFiled: May 2, 1989Date of Patent: October 23, 1990Assignee: Atochem North America, Inc.Inventor: James P. King
-
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
-
Patent number: 4818731Abstract: A colored frit prepared by fusing by heating a material composition comprising a devitrifying substance, a coloring agent and glass, and a method for manufacturing an artificial stone made by utilizing the colored frit. In the method of manufacturing artificial stones, the colored frits alone or a mixture of at least one kind of the colored frits and at least one kind of the colored frits and at least one kind of frits containing fluormicas are sintered, so that the colored frits are devitrified and the colors of the devitrified colored frits become distinctly visible to a viewer. This produces artificial stones having a wide variety of distinct colors and patterns.Type: GrantFiled: December 29, 1986Date of Patent: April 4, 1989Assignee: Masao YoshizawaInventors: Toyonobu Mizutani, Masao Yoshizawa, Toichiro Izawa
-
Patent number: 4590171Abstract: This invention relates to the production of frits especially suitable for use in contact with foods. The frits are essentially free from cadmium and lead and consist essentially, in weight percent on the oxide basis, of:Li.sub.2 O: 3-4Na.sub.2 O: 0.75-3BaO: 3.5-9.5B.sub.2 O.sub.3 : 14-17.5Al.sub.2 0.sub.3 : 6.75-8.75SiO.sub.2 : 48-55ZrO.sub.2 : 6.75-10.5F: 3-4.Type: GrantFiled: May 29, 1985Date of Patent: May 20, 1986Assignee: Corning Glass WorksInventor: Jaroslava M. Nigrin
-
Patent number: 4554258Abstract: Glass frit compositions for use in glazes or enamels have a fiber softening point of 535.degree. C. or more and are free of cadmium, lead and arsenic and consist essentially of Bi.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 with R.sub.2 O being 2-8% and RO being 0-9% by weight.Type: GrantFiled: June 28, 1984Date of Patent: November 19, 1985Assignee: Owens-Illinois, Inc.Inventor: Josef Francel
-
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
-
Patent number: 4521250Abstract: A mixture for preparation of protective and insulating coatings on metals and metal products which sticks well to metal surfaces, is resistant to high temperatures, has good electrical properties, and provides good heat removal. The mixture includes aluminum oxide, barium oxide, boron oxide, silicon oxide, and aluminum fluoride.Type: GrantFiled: May 10, 1984Date of Patent: June 4, 1985Assignee: Universita KarlovaInventors: Radomir Kuzel, Josef Broukal, Vaclav Bouse
-
Patent number: 4493900Abstract: A low melting enamel frit which comprises 31 to 39 wt % of SiO.sub.2, 13 to 21 wt % of B.sub.2 O.sub.3, 14 to 21 wt % of Na.sub.2 O, 1 to 5 wt % of K.sub.2 O, 5 to 20 wt % of ZnO, 2 to 10 wt % of F.sub.2 and 2 to 9 wt % of at least one of Al.sub.2 O.sub.3, ZrO.sub.2 and TiO.sub.2 provided that at least one intermediate oxide is present in an amount of 5 wt % in a maximum. The frit is capable of firing at temperatures lower than A.sub.1 transformation temperature of steel, say, 723.degree. C.Type: GrantFiled: February 4, 1983Date of Patent: January 15, 1985Assignee: Matsushita Electric Industrial Company, LimitedInventors: Atsushi Nishino, Masaki Ikeda, Kunio Kimura, Hajime Oyabu
-
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
-
Patent number: 4437192Abstract: A biologically active glass and class-ceramic composition useful for making surgical and dental implants comprising, by mol %,:______________________________________ SiO.sub.2 35.about.60 B.sub.2 O.sub.3 5.about.15 Na.sub.2 O 10.about. 30 CaO 5.about. 40 TiO.sub.2 0.5.about. 10 P.sub.2 O.sub.5 0.about. 15 K.sub.2 O 0.about. 20 Li.sub.2 O 0.about. 10 MgO 0.about. 5 Al.sub.2 O.sub.3 + ZrO.sub.2 + Nb.sub.2 O.sub.5 0.about. 8 La.sub.2 O.sub.3 + Ta.sub.2 O.sub.5 + Y.sub.2 O.sub.3 0.about.8 and F.sub.2 0.about.15.Type: GrantFiled: March 16, 1983Date of Patent: March 20, 1984Assignee: Nippon Kogaku K.K.Inventors: Takamitsu Fujiu, Makoto Ogino, Michio Kariya, Takeo Ichimura
-
Patent number: 4376169Abstract: A lead-free low-melting frit is made by combining raw materials in amounts such that the product will have a specific oxide analysis, melting the raw materials at a temperature greater than 1000.degree. C. and cooling the thus-formed fused glass in a manner such that a frit is formed. The low-melting frit has the following oxide analysis:7-12.5 parts by weight alkali oxide selected from2-9 parts by weight Na.sub.2 O and 2-7 parts by weight Li.sub.2 O;23-34 parts by weight B.sub.2 O.sub.3 ;2-4 parts by weight Al.sub.2 O.sub.3 ;30-45 parts by weight SiO.sub.2 ;0.75-4 parts by weight F;2-4 parts by weight P.sub.2 O.sub.5 ;4-8 parts by weight ZnO; and2-5 parts by weight TiO.sub.2.These frits are durable, have an incipient fusion point less than about 450.degree. C. and a coefficient of thermal expansion less than 10.times.10.sup.-6 cm/cm/.degree.C. The frits of the present invention are particularly useful as components in vitrifiable glass decorating colors.Type: GrantFiled: April 28, 1982Date of Patent: March 8, 1983Assignee: Mobay Chemical CorporationInventor: Richard A. Eppler
-
Patent number: 4359536Abstract: A novel frit glass composition is disclosed which is particularly useful to apply color coatings to the soda-lime glass envelopes of incandescent lamps. Specifically, the present glass frit can be combined with various inorganic coloring pigments to produce a colored coating when fired on the surface of the lamp glass envelope. The glass frit is a composition expressed in terms of weight percent, as calculated on the oxide basis, as follows:______________________________________ ZnO 25-31 SiO.sub.2 12-20 B.sub.2 O.sub.3 19-35 Al.sub.2 O.sub.3 1-4 Na.sub.2 O 5-10 CaO 7-9 BaO 2-6 ZrO.sub.2 0.5-4 F 1-2 K.sub.Type: GrantFiled: February 16, 1982Date of Patent: November 16, 1982Assignee: General Electric CompanyInventors: William A. Graff, Jaroslaw Kohut
-
Patent number: 4342553Abstract: A range of borosilicate glass compositions which are capable of sealing effectively to nickel iron alloys containing up to approximately 52% nickel to form a hermetic seal resistant to thermal shock breakage. The glass is in the composition range percent by weight of:SiO.sub.2 : 55-66Al.sub.2 O.sub.3 : 4.5-10Na.sub.2 O: 0-4K.sub.2 O: 3.5-7B.sub.2 O.sub.3 : 19.0-26.0TiO.sub.Type: GrantFiled: September 29, 1981Date of Patent: August 3, 1982Assignee: General Electric CompanyInventors: William A. Graff, George L. Thomas
-
Patent number: 4331768Abstract: This invention is directed to the production of glazes exhibiting an earthenware appearance which are particularly suitable for decorating ceramic dinnerware. The glaze composition consists essentially of about 4-8% by weight SnO.sub.2 and 4-8% by weight TiO.sub.2, the total SnO.sub.2 +TiO.sub.2 being about 10-14%, and about 0.025-0.04% by weight MnO.sub.2 incorporated into a base frit consisting essentially, as analyzed in weight percent on the oxide basis, of about______________________________________ SiO.sub.2 37-49 Al.sub.2 O.sub.3 4-7 B.sub.2 O.sub.3 6.5-11 ZrO.sub.2 0-1.75 Na.sub.2 O 1.75-3.5 K.sub.2 O 0.75-2.5 PbO 21-32 CdO 0-0.75 CaO 1-9 TiO.sub.2 0-0.35 F 0-0.6 ______________________________________The fired glaze contains crystallites of rutile and cassiterite.Type: GrantFiled: March 13, 1981Date of Patent: May 25, 1982Assignee: Corning Glass WorksInventors: David C. Boyd, Kun-Er Lu, Walter H. Tarcza
-
Patent number: 4322500Abstract: A potassium fluoro-borate glass, including silica and optionally alumina, containing at least 20 mole % potassium computed as K.sub.2 (O,F.sub.2), and wherein there are more fluorine atoms in the glass than oxygen atoms. The range of compositions includes low refractive index glasses, some with refractive indices less than that of silica, and high coefficient of thermal expansion glasses, some with coefficients matching those of aluminum, copper and brass.Type: GrantFiled: May 30, 1980Date of Patent: March 30, 1982Assignee: International Standard Electric CorporationInventor: Cyril F. Drake
-
Patent number: 4314031Abstract: Glass compositions in the tin-phosphorus-oxyfluoride composition system exhibiting very low glass transition temperatures and capable of being modified by the addition of selected constituents to exhibit excellent stability in a humid environment, are described.Type: GrantFiled: June 17, 1980Date of Patent: February 2, 1982Assignee: Corning Glass WorksInventors: Leon M. Sanford, Paul A. Tick
-
Patent number: 4312951Abstract: Disclosed are various ceramic frits which have a unique combination of low solubility, low-melting temperature, and freedom from lead oxide. They are formed from selected compositions in the alkali--ZnO--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --P.sub.2 O.sub.5 --SiO.sub.2 --TiO.sub.2 --F system.Type: GrantFiled: September 7, 1979Date of Patent: January 26, 1982Assignee: Mobay Chemical CorporationInventor: Richard A. Eppler
-
Patent number: 4311504Abstract: This invention is directed to glazes exhibiting a strong yellow-to-brown coloration or a bright red color which are stable at temperatures of 700.degree.-950.degree. C., the latter glazes being stable in non-oxidizing or inert environments. Both glazes utilize frits consisting essentially, in weight percent on the oxide basis as calculated from the batch, of______________________________________ SiO.sub.2 35-47 B.sub.2 O.sub.3 5.5-9 BaO 24-42 TiO.sub.2 1.5-4 ZrO.sub.2 6-10 Li.sub.2 O 1-5 MgO 0-5 CaO 0-4 SrO 0-8 ZnO 0-10 Bi.sub.2 O.sub.3 0-8 SrO + MgO + CaO + ZnO + Bi.sub.2 O.sub.3 0-10 ______________________________________The yellow-to-brown coloration is produced through the addition of 0.5-10% by weight Fe.sub.2 O.sub.3 and 0-4% TiO.sub.2. The red coloration is produced through the addition of 2-10% cadmium sulfoselenide.Type: GrantFiled: February 15, 1980Date of Patent: January 19, 1982Assignee: Corning Glass WorksInventor: Jaroslava M. Nigrin
-
Patent number: RE32299Abstract: This invention provides a novel glass composition having numerous uses. More particularly, the invention provides a single phase, radiopaque glass composition.Type: GrantFiled: September 21, 1984Date of Patent: December 2, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Ronald M. Randklev