Metal Or Ammonium Containing Patents (Class 423/305)
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Patent number: 5780003Abstract: A new family of crystalline manganese phosphate compositions has been prepared. These compositions have an extended network which network can be a one-, two-, or three-dimensional network. The composition has an empirical formula of:(A.sup.a+).sub.v (Mn.sup.b+)(M.sup.c+).sub.x P.sub.y O.sub.zwhere A is a templating agent such as an alkali metal, M is a metal such as Al, Fe.sup.3+ and "b" is the average manganese oxidation state and varies from greater than 3.0 to about 4.0. These compositions can be used as adsorbents and as catalysts in the oxidation of hydrocarbons.Type: GrantFiled: August 23, 1996Date of Patent: July 14, 1998Assignee: UOP LLCInventor: Gregory J. Lewis
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Patent number: 5776233Abstract: A bioactive ceramic material for dental fillings and crowns on the basis of calcium phosphate compounds contains crystallites of sparingly water-soluble calcium phosphate compounds in an amorphous, vitreous or polycrystalline matrix of readily water-soluble calcium phosphate compounds, the Ca/P-atomic ratio of the calcium phosphate compounds being altogether <1.65.Type: GrantFiled: May 13, 1994Date of Patent: July 7, 1998Assignee: BEGO Bremer Goldschlagerei Wilh. Herbst GmbH & Co.Inventors: Wolfgang Wiedemann, Hans Georg Klinger
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Patent number: 5741751Abstract: This invention provides a method for preparing non-zeolitic molecular sieves using inexpensive reagents and at lower manufacturing cost. The method includes using a low density, small size particulate hydrated alumina, such as aluminum hydroxide, in place of aluminum alkoxides and other more costly reagents. The preferred particulate hydrated alumina has a density of less than 1.0 g/cm.sup.3, an average particle size of less than about 40 microns and an alkali content of less than 0.12 wt %.Type: GrantFiled: August 28, 1996Date of Patent: April 21, 1998Assignee: Chevron U.S.A. Inc.Inventor: Stephen J. Miller
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Patent number: 5733519Abstract: A novel method for forming a dispersable, fine titanium pyrophosphate powder by reacting titanium dioxide and a molar excess of phosphoric acid. The excess phosphoric acid, at a phosphorus pentoxide to titanium dioxide mole ratio greater than one, significantly improves the yield of the reaction product as a fine powder. A phosphorus pentoxide to titanium dioxide mole ratio of about 1.20 to about 1.25 results in over a 90% yield of a dispersable, fine titanium pyrophosphate powder having a particle size less than one micron in diameter.Type: GrantFiled: February 5, 1996Date of Patent: March 31, 1998Assignee: Monsanto CompanyInventor: David R. Gard
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Patent number: 5718875Abstract: A process for producing ammonium polyphosphate of crystalline form II is described, which comprises heating a mixture of a phosphate-containing substance and a condensation agent in an ammoniacal wet air atmosphere in the presence of ammonium polyphosphate of crystalline form II as a compound for crystal formation (seed compound) to condense the phosphate-containing substance with the condensation agent.Type: GrantFiled: December 28, 1995Date of Patent: February 17, 1998Assignee: Chisso CorporationInventor: Makoto Watanabe
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Patent number: 5718757Abstract: The invention relates to a phosphomagnesium cement obtained by mixing water and a binding phase based on at least one phosphorus compound, at least one magnesium compound and at least one inorganic compound, characterized in that the inorganic compound is introduced in the form:- either of particles (1) of size smaller than 0.1 .mu.m,- or of aggregates (2) of size smaller than 0.1 .mu.m,- or of agglomerates (3) capable of deagglomerating at least partially during the mixing of the said binding phase and of water, into particles of size smaller than 0.1 .mu.m or into aggregates of size smaller than 0.1 .mu.m.Type: GrantFiled: December 3, 1996Date of Patent: February 17, 1998Assignee: Rhone-Poulenc ChimieInventors: Bruno Le Guillou, Giiies Orange
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Patent number: 5711779Abstract: A method for the manufacture of phosphate glass comprising forming an aqueous slurry by mixing phosphoric acid, a zinc compound and other batch materials in the required proportions, heating the batch slurry to produce a molten phosphate glass that exhibits a P.sub.2 O.sub.5 /ZnO weight ratio range between about 1.2 to 2.0, and cooling the molten phosphate glass to room temperature.Type: GrantFiled: February 17, 1994Date of Patent: January 27, 1998Assignee: Corning IncorporatedInventors: Noshir B. Havewala, Kevin T. Morris, Michelle D. Pierson, Robert D. Shoup
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Patent number: 5707442Abstract: Novel aluminum phosphates, in particular amorphous aluminum phosphate powders having a BET specific surface no greater than 25 m.sup.2 /g, well suited as binders/hardeners or for the production of ceramic shaped articles, are prepared by reacting at least one aluminum compound, e.g., an aluminum oxide, hydroxide or oxyhydroxide, with phosphoric acid or an aluminum phosphate, e.g., an acid aluminum orthophosphate, in a liquid reaction medium devoid of inorganic acid anions other than of phosphoric acid, and then spray- or freeze-drying the suspension thus obtained.Type: GrantFiled: November 15, 1995Date of Patent: January 13, 1998Assignee: Rhone-Poulenc ChimieInventors: William Fogel, Laurent Frouin
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Patent number: 5695729Abstract: Calcium phosphate compositions that are particularly useful and unique as orthopedic and dental cements and remineralizers, as well as methods and kits for their use, and the resulting products are disclosed. The compositions comprise tetracalcium phosphate which has been prepared from a mixture with a calcium to phosphorous ratio of less than 2, or prepared and maintained under substantially anhydrous conditions prior to use or, preferably, both. The novel compositions are converted substantially to hydroxyapatite upon setting, are substantially gradually resorbable and replaced by bone when implanted in contact with living bony tissue, and offer distinct advantages in terms of cement strength, setting time and reliability and other properties.Type: GrantFiled: June 7, 1995Date of Patent: December 9, 1997Assignee: American Dental Association Health FoundationInventors: Laurence C. Chow, Shozo Takagi
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Patent number: 5683496Abstract: Two component, storage stable apatitic cement compositions, as well as methods for their production, are provided. The dry component of subject apatitic cements comprises basic calcium source particles at least partially coated with a partially neutralized acidic calcium phosphate. The dry component of subject compositions is prepared by combining basic calcium source particles with dissolved acidic phosphate in at least a partially aqueous medium, whereby the basic calcium source particles become partially coated with a partially neutralized acidic calcium phosphate. The reaction is terminated prior to completion of the reaction between the acidic phosphate and the basic calcium source by removing the available water from the reaction mixture. In a first mode, the subject cement may be produced by mechanically mixing an acidic phosphate source with basic calcium source particles in the presence of an aqueous solvent and stopping the reaction between the acid and base prior to completion.Type: GrantFiled: May 14, 1996Date of Patent: November 4, 1997Assignee: Norian CorporationInventors: Ira C. Ison, Mark T. Fulmer, Bryan M. Barr, Brent R. Constantz
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Patent number: 5676917Abstract: A fine, largely beta phase calcium pyrophosphate powder for, e.g., a diffuser coating for the interior surface of lamp envelopes. The powder is useful for electrostatic deposition of such coatings under varying conditions of environmental humidity. A process for the synthesis of the calcium pyrophosphate is also disclosed. Dibasic calcium orthophosphate (monetite) is dissolved in a dilute aqueous hydrochloric acid solution and spray-dried to form a calcium phosphate powder of spherically shaped hollow particles. The calcium phosphate powder is fired in air to convert the calcium phosphate powder to a spherical calcium pyrophosphate powder including the beta phase as a major component and the gamma phase as a minor component. For a diffuser coating, the poder is sonicated to fragment a portion of the hollow particles.Type: GrantFiled: September 20, 1996Date of Patent: October 14, 1997Assignee: Osram Sylvania Inc.Inventors: Leslie F. Trudeau, Charles F. Chenot, Richard G. W. Gingerich
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Patent number: 5667761Abstract: A pure gamma calcium pyrophosphate for use in e.g., the production of calcium haloapatite fluorescent phosphor host materials, and a process for the synthesis thereof. Dicalcium orthophosphate is dissolved in a dilute solution of nitric acid in water, and spray-dried to form a calcium phosphate powder including a major phase of spherically shaped particles of dicalcium orthophosphate. The calcium phosphate powder is fired in air to convert the calcium phosphate powder to pure gamma calcium pyrophosphate. Gamma pyrophosphate will not undergo dehydration during firing of the fluorescent phosphor; thus larger quantities of phosphor can be processed in a firing vessel.Type: GrantFiled: September 20, 1996Date of Patent: September 16, 1997Assignee: Osram Sylvania Inc.Inventors: Cheryl M. Forster, Scott A. Meilicke
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Patent number: 5660808Abstract: There is disclosed a process for preparing sodium tripolyphosphate which will dissolve readily in an aqueous solution also containing sodium chloride and various spices and flavorings useful in the treatment of food products such as fresh red meats, poultry and fish. The sodium tripolyphosphate of this invention is prepared from a dry blend of disodium phosphate and monosodium phosphate in a weight ratio in the range of from about 2.35 to about 2.45. The dry blend is calcined so as to produce a product having from 85% to 90% sodium tripolyphosphate, of which from about 90% to 100%, by weight, is phase II product. The product also contains about 10% to about 15% sodium pyrophosphate.Type: GrantFiled: June 14, 1995Date of Patent: August 26, 1997Assignee: Monsanto CompanyInventors: Joan K. Glascock, Louis A. Highfill
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Patent number: 5599762Abstract: Glycol ether compounds such as glycol ethers and glycol ether esters are used as azeotropic distillation solvents for conversion of inorganic oxide hydrogels to xerogels by removal of water. These compounds are especially useful to make chromium-containing catalysts for production of high melt index polyolefins at reduced cost compared to known azeotropic solvents.Type: GrantFiled: June 7, 1995Date of Patent: February 4, 1997Assignee: W. R. Grace & Co.-Conn.Inventor: Dean A. Denton
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Patent number: 5597542Abstract: The invention relates to a process for the treatment of natural apatites with a view to the use thereof for storing irradiated fuel elements.This process consists of contacting a natural apatite powder with an acid aqueous solution, e.g. dilute HNO.sub.3 or HCl for between a few seconds and 10 minutes.In this way, the physicochemical properties of the natural apatite are improved by modifying its surface composition in order to make it close to that of hydroxyapatite. This modified apatite can be used as a filling material in irradiated fuel element storage containers.Type: GrantFiled: June 15, 1994Date of Patent: January 28, 1997Assignee: Commissariat A L'Energie AtomiqueInventors: Joelle Carpena, Jean-Louis Lacout
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Patent number: 5595724Abstract: Treated calcium/oxyanion-containing particles are disclosed for enhancing medical diagnostic imaging such as magnetic resonance imaging ("MRI"), magnetic resonance spectroscopy ("MRS"), magnetic resonance spectroscopy imaging ("MRSI"), X-ray diagnostic imaging, and ultrasound imaging. Novel coating and manufacturing techniques are disclosed to control particle size and particle aggregation resulting in compositions for organ specific imaging of the liver, spleen, or tissue disease states is obtained. Depending on the diagnostic imaging technique, calcium/oxyanion-containing particles are treated to be paramagnetic, radiopaque, or echogenic. Also disclosed are diagnostic compositions and methods of performing medical diagnostic procedures which involve administering to a warm-blooded animal a diagnostically effective amount of the above-described particles and then performing the medical diagnostic procedure.Type: GrantFiled: January 13, 1995Date of Patent: January 21, 1997Inventors: Edward A. Deutsch, Karen F. Deutsch, Dennis L. Nosco, William H. Ralston, David H. White, Janet B. Wilking, Robert G. Wolfangel, Steven R. Woulfe, William P. Cacheris, Linda Meeh
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Patent number: 5569490Abstract: The invention provides (i) a process for preparing tetracalcium phosphate particles, the process comprising the steps of (1) sintering or fusing a powder mixture at a temperature of not lower than 1,400.degree. C., the mixture comprising a powder of calcium source and a powder of phosphorus source in a Ca/P molar ratio of 2/1, and about 0.005 to about 5 parts of an aluminum compound, calculated as Al.sub.2 O.sub.Type: GrantFiled: June 2, 1995Date of Patent: October 29, 1996Assignee: Osaka Cement Co., Ltd.Inventors: Akitoshi Imura, Toru Saito, Shiro Ikegami
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Patent number: 5552361Abstract: Homogeneous amorphous aluminum phosphate composition with a surface of 100 to 300 m.sup.2 /g and a pore volume in pores with diameters of less than 1000 nm of at least 1.0 cm.sup.3 /g, in which phosphorus and aluminum are present in a molar ratio in the range from 0.9:1 to 1:1 and which is characterized in that it is present in the form of microspherical particles with a particle size of 10 to 20 .mu.m and displays a bimodal pore-size distribution in the pore-diameter range of less than 1000 nm. Also described is a process for the production of the novel aluminum phosphate composition, which is suitable in particular as a cracking catalyst, as a catalyst support, especially for polymerization catalysts, as a flatting agent, as an adsorption agent and as a thickening agent.Type: GrantFiled: November 4, 1993Date of Patent: September 3, 1996Assignee: W. R. Grace & Co.-Conn.Inventors: Klaus Rieser, Christoph Weber, William A. Welsh
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Patent number: 5550172Abstract: A process for enhancing the security of implantable surgical devices secured to bone tissue comprising implanting in bone tissue a surgical device with a biocompatible adhesive and/or sealant selected from the group consisting of: p1 (a) a material made from monomers of the formula:CHR.sup.1 .dbd.CX.sup.1 Y.sup.1wherein X.sup.1 and Y.sup.1 are each strong electron withdrawing groups, and R.sup.1 is hydrogen or, provided that X.sup.1 and Y.sup.1 are both cyano groups, a C.sub.1 -C.sub.4 alkyl group;(b) a semi-crystalline aliphatic poly(ester) of the formula:[--0--R.sup.11 --C(0)--].sub.y,wherein R.sup.11 is selected from the group consisting of --CR.sup.12 H--, --(CH.sub.2).sub.3 --0--, --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --, CR.sub.12 H--CH.sub.2, --(CH.sub.2).sub.4 --, --(CH.sub.2).sub.z --O--C(O)-- and --(CH.sub.2).sub.z --C(O)--CH.sub.2 --; R.sup.Type: GrantFiled: February 7, 1995Date of Patent: August 27, 1996Assignee: Ethicon, Inc.Inventors: Donald W. Regula, Kevin Cooper, Michael F. Bregen, Shawn T. Huxel, Daniel C. Rosenman
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Patent number: 5536575Abstract: The invention provides (i) a process for preparing tetracalcium phosphate particles, the process comprising the steps of (1) sintering or fusing a powder mixture at a temperature of not lower than 1,400.degree. C., the mixture comprising a powder of calcium source and a powder of phosphorus source in a Ca/P molar ratio of 2/1, and about 0.005 to about 5 parts of an aluminum compound, calculated as Al.sub.2 O.sub.Type: GrantFiled: December 21, 1994Date of Patent: July 16, 1996Assignee: Osaka Cement Co., Ltd.Inventors: Akitoshi Imura, Toru Saito, Shiro Ikegami
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Patent number: 5530144Abstract: A process for producing a precursor of a phosphorus-vanadium oxide catalyst for production of maleic anhydride by vapor phase oxidation of a hydrocarbon having 4 carbon atoms, which comprises reacting phosphoric acid and a pentavalent vanadium compound in an organic solvent capable of reducing at least a portion of the pentavalent vanadium to a valence state of +4, the phosphoric acid being substantially composed of orthophosphoric acid, and a phosphoric acid solution whose concentration is 88 to 96% being used as a source of the phosphoric acid; and a process for producing the catalyst comprising dry-pulverizing the catalyst precursor.Type: GrantFiled: December 20, 1994Date of Patent: June 25, 1996Assignee: Mitsubishi Chemical CorporationInventors: Yasushi Tsurita, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 5522893Abstract: Calcium phosphate compositions that are particularly useful and unique as orthopedic and dental cements and remineralizers, as well as methods and kits for their use, and the resulting products are disclosed. The compositions comprise tetracalcium phosphate which has been prepared from a mixture with a calcium to phosphorous ratio of less than 2, or prepared and maintained under substantially anhydrous conditions prior to use or, preferably, both. The novel compositions are converted substantially to hydroxyapatite upon setting, are substantially gradually resorbable and replaced by bone when implanted in contact with living bony tissue, and offer distinct advantages in terms of cement strength, setting time and reliability and other properties.Type: GrantFiled: March 12, 1993Date of Patent: June 4, 1996Assignee: American Dental Association Health FoundationInventors: Laurence C. Chow, Shozo Takagi
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Patent number: 5518541Abstract: Phosphomagnesia compositions settable into improvedly water-insensitive cements that retain their mechanical properties comprise an intimate admixture of (i) a binder phase including (a) at least one phosphorous compound (P.sub.2 O.sub.5 or derivative/precursor thereof) and (b) at least one magnesium compound reactive therewith in the presence of water, (ii) an effective amount of cementitious aggregate, and (iii) a water sensitivity-reducing amount of at least one silicone homogeneously distributed therethrough.Type: GrantFiled: December 29, 1994Date of Patent: May 21, 1996Assignee: Rhone-Poulenc ChimieInventors: William Fogel, Eric Garcin
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Patent number: 5514210Abstract: An apatite-organic material complex comprising an apatite powder having a crystal particle size of at most 0.5 .mu.m, an organic material and from 5 to 40 wt. % of water.Type: GrantFiled: September 9, 1994Date of Patent: May 7, 1996Assignee: National Institute for Research in Inorganic MaterialsInventors: Kazushi Hirota, Katsunari Nishihara
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Patent number: 5498284Abstract: Aqueous coating compositions for glass or ceramic substrates contain at least one water soluble alkali silicate and a cross-linking agent produced by reacting at least one alkali hydroxide with an aluminum phosphate. The coating compositions are applied to a glass or ceramic substrate and heat cured.Type: GrantFiled: July 22, 1994Date of Patent: March 12, 1996Assignee: Neely Industries, Inc.Inventor: James E. Neely, Jr.
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Patent number: 5496787Abstract: A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.Type: GrantFiled: January 28, 1994Date of Patent: March 5, 1996Assignee: Mitsubishi Chemical CorporationInventors: Masakatsu Hatano, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 5496399Abstract: Two component, storage stable apatitic cement compositions, as well as methods for their production, are provided. The dry component of subject apatitic cements comprises basic calcium source particles at least partially coated with a partially neutralized acidic calcium phosphate. The dry component of subject compositions is prepared by combining basic calcium source particles with dissolved acidic phosphate in at least a partially aqueous medium, whereby the basic calcium source particles become partially coated with a partially neutralized acidic calcium phosphate. The reaction is terminated prior to completion of the reaction between the acidic phosphate and the basic calcium source by removing the available water from the reaction mixture. In a first mode, the subject cement may be produced by mechanically mixing an acidic phosphate source with basic calcium source particles in the presence of an aqueous solvent and stopping the reaction between the acid and base prior to completion.Type: GrantFiled: August 23, 1994Date of Patent: March 5, 1996Assignee: Norian CorporationInventors: Ira C. Ison, Mark T. Fulmer, Bryan M. Barr, Brent R. Constantz
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Patent number: 5496529Abstract: Novel aluminum phosphates, in particular amorphous aluminum phosphate powders having a BET specific surface no greater than 25 m.sup.2 /g, well suited as binders/hardeners or for the production of ceramic shaped articles, are prepared by reacting at least one aluminum compound, e.g., an aluminum oxide, hydroxide or oxyhydroxide, with phosphoric acid or an aluminum phosphate, e.g., an acid aluminum orthophosphate, in a liquid reaction medium devoid of inorganic acid anions other than of phosphoric acid, and then spray- or freeze-drying the suspension thus obtained.Type: GrantFiled: March 17, 1994Date of Patent: March 5, 1996Assignee: Rhone-Poulenc ChimieInventors: William Fogel, Laurent Frouin
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Patent number: 5482526Abstract: The instant invention describes a method for preparing a stable, anhydrous non-hygroscopic zinc phosphate compound which is suitable for use as a batch material in the preparation of zinc-phosphate glasses. This method comprises three basic steps: first, forming an aqueous slurry mixture by intimately mixing a mixture containing phosphoric acid and a zinc-containing compound whereby the so-formed slurry mixture is comprised of a mixture of zinc hydrogen phosphates and exhibits a P.sub.2 O.sub.5 /ZnO weight ratio range between about 1.2 to 2.0; second, heating the so-formed slurry mixture to a temperature and for a time sufficient to achieve both a removal of a sufficient amount of water and the phase transformation of the zinc hydrogen phosphates resulting in zinc-phosphate material comprised of granular solid mixture of zinc metaphosphates and zinc pyrophosphate and third, cooling the zinc-phosphate material to room temperature.Type: GrantFiled: February 17, 1994Date of Patent: January 9, 1996Assignee: Corning IncorporatedInventors: Noshir B. Havewala, Kevin T. Morris, Robert D. Shoup
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Patent number: 5468465Abstract: Treated apatite particles are disclosed for enhancing medical diagnostic imaging such as magnetic resonance imaging ("MRI"), magnetic resonance spectroscopy ("MRS"), magnetic resonance spectroscopy imaging (37 MRSI"), X-ray diagnostic imaging, and ultrasound imaging. Novel coating and manufacturing techniques are disclosed to control particle size and particle aggregation resulting in compositions for organ specific imaging of the liver, spleen, gastrointestinal tract, or tissue disease states is obtained. Depending on the diagnostic imaging technique, apatite particles are treated to be paramagnetic, radiopaque, or echogenic. The apatite particles may also be fluorinated to form stable fluoroapatite compositions useful for .sup.19 F imaging.Type: GrantFiled: July 6, 1994Date of Patent: November 21, 1995Assignee: Mallinckrodt Medical, Inc.Inventors: Edward A. Deutsch, Karen F. Deutsch, William P. Cacheris, William H. Ralston, David H. White, Dennis L. Nosco, Robert G. Wolfangel, Janet B. Wilking, Linda Meeh, Steven R. Woulfe
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Patent number: 5462722Abstract: This invention provides new inorganic composite materials for hard tissue replacement. The new composite material comprises solid material of calcium sulfate which is fully or partially converted to calcium phosphate from aqueous solution. This composite material has good biocompatibility and controllable resorption, and will be very useful for bone substitute material in orthopaedic and dental applications. The fully converted material which comprises mainly apatite calcium phosphate is also useful for chromatography application. A process to prepare these new composite materials is also described.Type: GrantFiled: April 17, 1991Date of Patent: October 31, 1995Inventors: Sung-Tsuen Liu, Harvey H. Chung
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Patent number: 5460803Abstract: This invention involves new compositions and methods of use and delivery of amorphous calcium compounds such as: amorphous calcium phosphate (ACP), amorphous calcium phosphate fluoride (ACPF), amorphous calcium carbonate phosphate (ACCP), amorphous calcium carbonate phosphate fluoride (ACCPF), and amorphous calcium fluoride (ACF) for use in remineralizing and fluoridating teeth. These amorphous compounds or solutions which form the amorphous compounds, when applied either onto or into dental tissue prevent and/or repair dental weaknesses such as dental caries, exposed roots and dentin sensitivity. The compounds have the highest solubilities, fastest formation rates and fastest conversion rates (to apatite) among all the calcium phosphates under physiological conditions. Moreover, in the presence to fluoride the amorphous compound convert rapidly to fluoride containing apatite.Type: GrantFiled: August 26, 1992Date of Patent: October 24, 1995Assignee: American Dental Association Health FoundationInventor: Ming S. Tung
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Patent number: 5456894Abstract: The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN].sub.3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH.sub.2 or O, and M is a metal cation. Another group of the compounds have the generic formula M.sub.a (P.sub.2 O.sub.5).sub.b (NH.sub.3).sub.c O.sub.d.eH.sub.2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.Type: GrantFiled: October 12, 1993Date of Patent: October 10, 1995Assignee: Northeastern UniversityInventors: Geoffrey Davies, Nagwa El-Kady, Ahmed El-Toukhy
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Patent number: 5430233Abstract: Solid residues arising from the reclamation of metal from, for example, insulated wires and automobiles, have lead (Pb) sufficiently insolubilized to pass the EPA toxicity test. Addition of water soluble phosphate, especially phosphoric acid, increases the immobilization of lead (Pb) so as to make such residues in compliance with the toxicity tests over a substantially broader pH range, particularly with respect to the more stringent TCLP extraction test.Type: GrantFiled: March 22, 1991Date of Patent: July 4, 1995Assignee: Wheelabrator Environmental Systems, Inc.Inventor: Keith E. Forrester
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Patent number: 5420279Abstract: Microporous crystallized gallium phosphate and its substituted derivatives, characterized by:a) the following approximate general formula:R.sub.r Ga.sub.g P.sub.p X.sub.x O.sub.2 F.sub.f hH.sub.2 Owhere the sum of g, p and x is equal to 1, and whereg is a number from 0.3 to 0.5,p is a number from 0.3 to 0.52,x is a number from 0 to 0.4,r is a number from 0.01 to 0.2,f is a number from 0.01 to 0.2,h varies according to the degree of hydration of the solid, from 0 to 0.5.R is an organic compound selected from the group formed by cyclic amines,X is a heteroatom selected from the group formed by the elements: Li, Be, Co, Mg, Mn, Zn, Al, B, Cr, Fe, Ge, Si, Ti, As and Vb) an X-ray diffraction diagram shown in Table 1 of the description,and a method of preparing them.Type: GrantFiled: September 9, 1993Date of Patent: May 30, 1995Assignee: Institut Francais du PetroleInventors: Jean-Francois Joly, Adballah Merrouche, Henri Kessler, Jean-Louis Guth
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Patent number: 5409982Abstract: Tetracalcium phosphate particles are prepared by sintering or fusing at a temperature of at least 1,400.degree. C. a mixture of a powder of calcium source and a powder of phosphorous source in a Ca/P molar ratio of 2:1 and about 0.05 to about 5 parts of aluminum compound per 1 parts of tetracalcium phosphate to be produced in terms of the theoretical amount and finely-dividing the product obtained.Type: GrantFiled: June 9, 1993Date of Patent: April 25, 1995Assignee: Osaka Cement Co. Ltd.Inventors: Akitoshi Imura, Toru Saito, Shiro Ikegami
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Patent number: 5407659Abstract: Treated calcium/oxyanion-containing particles are disclosed for enhancing medical diagnostic imaging such as magnetic resonance imaging ("MRI"), magnetic resonance spectroscopy ("MRS"), magnetic resonance spectroscopy imaging ("MRSI"), X-ray diagnostic imaging, and ultrasound imaging. Novel coating and manufacturing techniques are disclosed to control particle size and particle aggregation resulting in compositions for organ specific imaging of the liver, spleen, or tissue disease states is obtained. Depending on the diagnostic imaging technique, calcium/oxyanion-containing particles are treated to be paramagnetic, radiopaque, or echogenic. Also disclosed are diagnostic compositions and methods of performing medical diagnostic procedures which involve administering to a warm-blooded animal a diagnostically effective amount of the above-described particles and then performing the medical diagnostic procedure.Type: GrantFiled: April 13, 1993Date of Patent: April 18, 1995Assignee: Mallinckrodt Medical, Inc.Inventors: Edward A. Deutsch, Karen F. Deutsch, Dennis L. Nosco, William H. Ralston, David H. White, Janet B. Wilking, Robert G. Wolfangel, Steven R. Woulfe
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Patent number: 5406012Abstract: A composition comprising a crystalline aluminumphosphate material having a three-dimensional microporous crystal framework structure whose chemical composition expressed in terms of mole ratios of oxides isAl.sub.2 O.sub.3 : 1.0.+-.0.2 P.sub.2 O.sub.5 ;and which is further defined as having an x-ray powder diffraction pattern characterized by d spacings at less than about 40 degrees two-theta as measured using copper K-alpha radiation that are substantially as shown in the Table and a metal in an amount of up to about 25 percent by weight is disclosed. The composition can be prepared by impregnating the crystalline aluminumphosphate material with the metal in an amount of up to about 25 percent by weight. The resultant heterocatalyst system can be used to shape-selectively hydrogenate an unsaturated organic compound, such as, for example an olefin, aldehyde or ketone.Type: GrantFiled: May 23, 1989Date of Patent: April 11, 1995Assignee: The Dow Chemical CompanyInventor: Mark E. Davis
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Patent number: 5403519Abstract: There is disclosed an amorphous, polymeric material that contains phosphorous, aluminum and carbon atoms, and that is the reaction product of a buffered liquid mixture of a source of phosphorous, such as 85% phosphoric acid, a source of aluminum, such as boehmite, and an organic liquid buffer, such as a carboxylic acid. The polymeric material may be converted to a glassy or crystalline solid by heating to a temperature of at least 150.degree. C., and may be cellulated.Type: GrantFiled: July 1, 1993Date of Patent: April 4, 1995Assignee: Corning IncorporatedInventor: Hermann L. Rittler
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Patent number: 5374411Abstract: Crystalline aluminumphosphate compositions having three-dimensional microporous crystal framework structures whose chemical composition expressed in terms of mole ratios is Al.sub.2 O.sub.3 :1.0.+-.P.sub.2 O.sub.5 are disclosed. These compositions have an X-ray diffraction pattern characterized by d spacings at less than about 40 degrees two-theta as measured using copper K-alpha radiation that are substantially as shown in Table 1. The compositions can further comprise a structure-directing agent. Preparation is by admixing an aluminum source, a phosphorus source and 10-100 moles of water per mole of Al.sub.2 O.sub.3 to form a precursor mixture, admixing the precursor mixture with the structure-directing agent to form a reaction mixture, and reacting the reaction mixture under conditions such that an aluminumphosphate composition of the given X-ray diffraction pattern is formed.Type: GrantFiled: June 15, 1988Date of Patent: December 20, 1994Assignee: The Dow Chemical CompanyInventors: Mark E. Davis, Juan M. Garces, Carlos H. Saldarriaga, Maria Del C. Montes de Correa
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Patent number: 5370851Abstract: This invention relates to novel silicoaluminophosphate molecular sieves. These sieves are represented by the empirical formula:mR:(Si.sub.x Al.sub.y P.sub.z)O.sub.2where R represents at least one organic templating agent present in the intracrystalline pore system; m is the molar amount of R per mole of (Si.sub.x Al.sub.y P.sub.z)O.sub.2 and has a value from zero to about 0.3; x is the mole fraction of silicon and varies from about 0.01 to about 0.98, y is the mole fraction of aluminum and varies from about 0.01 to about 0.60, z is the mole fraction of phosphorus and varies from about 0.01 to about 0.52 and x+y+z=1. These sieves have the structure of SAPO-36 or SAPO-56 and are useful as hydrocarbon conversion processes.Type: GrantFiled: May 27, 1993Date of Patent: December 6, 1994Assignee: UOPInventor: Stephen T. Wilson
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Patent number: 5366945Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.Type: GrantFiled: December 22, 1992Date of Patent: November 22, 1994Assignee: Mobil Oil Corp.Inventors: Charles T. Kresge, David O. Marler, Gayatri S. Rav, Brenda H. Rose
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Patent number: 5360474Abstract: Colored crystalline alumophosphates and/or silicoalumophsophates of the AEL or VFI type useful as dyes, optical elements and as adsorbents have the following X-ray diffraction diagram:______________________________________ Interplanar spacing Relative intensity d(A) I/I.sub.o .times. 100 ______________________________________ 10.91 .+-. 0.1 26 .+-. 10 9.19 .+-. 0.1 41 .+-. 10 6.79 .+-. 0.05 16 .+-. 10 5.57 .+-. 0.05 52 .+-. 10 4.39 .+-. 0.05 39 .+-. 10 4.18 .+-. 0.05 71 .+-. 10 4.09 .+-. 0.05 33 .+-. 10 3.98 .+-. 0.05 57 .+-. 10 3.86 .+-. 0.05 68 .+-. 10 3.81 .+-. 0.05 100 ______________________________________and a composition described by the following formula:a quinizarin.b Al.sub.2 O.sub.3.c P.sub.2 O.sub.5.d SiO.sub.2where a is from 0.05 to 2, b and c are each from 8 to 12, and d is from 0 to 4.Type: GrantFiled: September 16, 1992Date of Patent: November 1, 1994Assignee: BASF AktiengesellschaftInventors: Guenter Lauth, Ulrich Mueller, Wolfgang Hoelderich, Stefan Brode, Gerhard Wagenblast
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Patent number: 5350461Abstract: The present invention relates to a solid low temperature phosphorus diffusion source that is an R.sub.2 O.sub.3 /P.sub.2 O.sub.5 compound in which the ratio of R.sub.2 O.sub.3 to P.sub.2 O.sub.5 is 1 to 5 and R is Nd, Eu, Pr, Sm, Ho, Tb, Er, Yb, Tm or Dy. The invention also relates to a method of making the diffusion source, a method of using the diffusion source to evolve P.sub.2 O.sub.5 to dope a silicon wafer, and the doped silicon wafer.Type: GrantFiled: December 8, 1992Date of Patent: September 27, 1994Assignee: Techneglas, Inc.Inventors: Gary R. Pickrell, James E. Rapp
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Patent number: 5350460Abstract: The present invention relates to a solid high temperature phosphorus diffusion source that is an R.sub.2 O.sub.3 /P.sub.2 O.sub.5 compound in which the ratio of R.sub.2 O.sub.3 to P.sub.2 O.sub.5 is 1 to 3 and R is La, Y, Ce, Nd, Eu, Pt, Sm, Ho, Tb, Er, Yb, Tm or Dy. The invention also relates to a method of making the diffusion source, a method of using the diffusion source to evolve P.sub.2 O.sub.5 to dope a silicon wafer, and to the doped silicon wafer.Type: GrantFiled: December 8, 1992Date of Patent: September 27, 1994Assignee: Techneglas, Inc.Inventors: Gary R. Pickrell, James E. Rapp
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Patent number: 5344640Abstract: Treated apatite particles are disclosed for enhancing medical diagnostic imaging such as magnetic resonance imaging ("MRI"), magnetic resonance spectroscopy ("MRS"), magnetic resonance spectroscopy imaging ("MRSI"), X-ray diagnostic imaging, and ultrasound imaging. Novel coating and manufacturing techniques are disclosed to control particle size and particle aggregation resulting in compositions for organ specific imaging of the liver, spleen, gastrointestinal tract, or tissue disease states is obtained. Depending on the diagnostic imaging technique, apatite particles are treated to be paramagnetic, radiopaque, or echogenic. The apatite particles may also be fluorinated to form stable fluoroapatite compositions useful for .sup.19 F imaging.Type: GrantFiled: September 22, 1992Date of Patent: September 6, 1994Assignee: Mallinckrodt Medical, Inc.Inventors: Edward A. Deutsch, Karen F. Deutsch, William P. Cacheris, William H. Ralston, David H. White, Dennis L. Nosco, Robert G. Wolfangel, Janet B. Wilking, Linda Meeh, Steven R. Woulfe
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Patent number: 5324493Abstract: Aluminophosphates and silicoaluminophosphates having the AEL structure are prepared under hydrothermal crystallization conditions by a process in which 1,2-bis-( 4-pyridyl)-ethane is used for the crystallization.Type: GrantFiled: August 31, 1992Date of Patent: June 28, 1994Assignee: BASF AktiengesellschaftInventors: Ulrich Mueller, Wolfgang Hoelderich, Guenter Lauth
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Patent number: 5300136Abstract: Scrap aluminum is reclaimed by a salt flux-based reclamation process using potassium chloride in place of the commonly used sodium chloride. The spent flux which remains after the recovery of the aluminum is useful as a soil fertilizer, with the potassium content of the flux serving as a source of potassium nutrient for the soil. The potassium in the spent flux is highly water soluble at all values of pH while the aluminum in the spent flux remains at a limited solubility, particularly under the conditions expected to be encountered in soil. Thus, despite the known phytotoxicity of aluminum and the presence of aluminum in the spent flux, the spent flux is discovered to be useful as a plant fertilizer with the maximum benefit from the potassium and minimal if any harm from the aluminum.Type: GrantFiled: July 2, 1992Date of Patent: April 5, 1994Assignee: Imco Recycling, Inc.Inventors: William O. Stauffer, F. Robert Hubbard
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Patent number: 5296151Abstract: A process is provided for the precipitation of phosphates from phosphate-comprising waters which utilizes iron hydroxide of the formula Fe.sub.2 O.sub.3.nH.sub.2 O wherein n=0.5-3.0. The iron hydroxide is prepared from natural or technical muds comprising iron in a process which involves dissolving with mineral acid and precipitation with a base. Other metal hydroxides are used together with the iron hydroxide.Type: GrantFiled: September 2, 1992Date of Patent: March 22, 1994Assignee: Industrie Automation Sondertechnik GmbH & Co.Inventors: German Muller, Siegfried Riethmayer
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Patent number: RE34911Abstract: Aluminum phosphate compositions arc provided which are characterized simultaneously by high porosity and phosphorous-to-aluminum ratios of approximately 1.0. The high porosity of these compositions is a function of high pore volume coupled with low surface area, resulting in high average pore diameter. These materials have excellent properties as catalysts and catalyst supports.Type: GrantFiled: July 1, 1993Date of Patent: April 18, 1995Assignee: W. R. Grace & Co.-Conn.Inventor: Rimantas Glemza