41 |
Reactive binders for porous wall-flow filters |
US11394594 |
2006-03-30 |
US07575618B2 |
2009-08-18 |
Weiguo Miao; Jianguo Wang |
Porous ceramic articles such as ceramic filters are provided from ceramic extrusion batches comprising mixtures of oxides and oxide precursors with a reactive binder system, the binder system comprising a cellulosic temporary binder and two or more reactive binder components such as colloidal alumina, carbohydrate pore formers, reactive high charge density polymers, and chemical cross-linkers, the reactive binder system promoting cross-linking or networking reactions in the batch that enhance the fine pore structures of the porous ceramic products. |
42 |
Honeycomb filter |
US11717042 |
2007-03-13 |
US07550026B2 |
2009-06-23 |
Syuhei Hayakawa |
A honeycomb filter includes at least one pillar-shape honeycomb structured body including a plurality of cells partitioned by partitions, and plugs for sealing upstream openings of a plurality of first cells selected from the plurality of cells and for sealing downstream openings of a plurality of second cells selected from the plurality of cells. Each of the plugs is formed of a material having a greater total content of aluminum, iron, boron, silicon, and free carbon than a material forming the honeycomb structured body. |
43 |
COMPOSITION COMPRISING A PHOSPHATE BINDER AND ITS PREPARATION |
US12391822 |
2009-02-24 |
US20090155574A1 |
2009-06-18 |
Pakiza Mohammad |
A binder, a composition, a product and a kit, as well as a process for preparing the binder and composition, are directed to a composition useful as an inorganic phosphate binder, which binder is characterized as having calcium silicate sites which are connected the one with the other by alumina-silica phosphate bonds, and a filler. |
44 |
Composition comprising a phosphate binder and its preparation |
US10821154 |
2004-04-07 |
US07517402B2 |
2009-04-14 |
Pakiza Mohammad |
A binder, a composition, a product and a kit, as well as a process for preparing the binder and composition, are directed to a composition useful as an inorganic phosphate binder, which binder is characterized as having calcium silicate sites which are connected the one with the other by alumina-silica phosphate bonds, and a filler. |
45 |
Method of manufacturing a cordierite structure |
US11651814 |
2007-01-10 |
US07494613B2 |
2009-02-24 |
Gregory A. Merkel; Tinghong Tao |
A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a CTE (25-800° C.) of less than 13×10−7/° C., a bulk filter density of less than 0.60 g/cm3, a median pore diameter, d50, of less than 25 micrometers, a porosity and pore size distribution that satisfy the relationship Pm≦3.75, wherein Pm is equal to 10.2474{1/[(d50)2(%porosity/100)]}+0.0366183(d90)−0.00040119(d90)2+0.468815(100/%porosity)2+0.0297715(d50)+1.61639(d50−d10)/d50, wherein d10, and d90 are pore diameters at 10% and 90% of the pore size distribution on a volumetric basis, and d10
|
46 |
Method of manufacturing a cordierite structure |
US11651814 |
2007-01-10 |
US20070107398A1 |
2007-05-17 |
Gregory Merkel; Tinghong Tao |
A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a CTE (25-800° C.) of less than 13×10−7/° C., a bulk filter density of less than 0.60 g/cm3, a median pore diameter, d50, of less than 25 micrometers, a porosity and pore size distribution that satisfy the relationship Pm≦3.75, wherein Pm is equal to 10.2474{1/[(d50)2(1/oporosity/100)]}+0.0366183(d90)−0.00040119(d90)2+0.468815(100/% porosity)2+0.0297715(d50)+1.61639(d50−d10)/d50, wherein d10, and d90 are pore diameters at 10% and 90% of the pore size distribution on a volumetric basis, and d10
|
47 |
High strength flooring compositions |
US10511338 |
2003-03-27 |
US07056964B2 |
2006-06-06 |
Dennis Mark Lettkeman; Raymond A. Kaligian, II; Eldon L. Whiteside; William K. Bedwell; Sharon Meiseman |
A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound. The mixture includes from about 50% to about 98% by weight calcium sulfate hemihydrate, having at least 25% of the calcium sulfate hemihydrate in the beta-calcined form. A polycarboxylate dispersant is included in the mixture in amounts from about 0.2% to about 10% by weight. The mixture also includes 0.05–50% by weight enhancing component. When combined with recommended amounts of water, a slurry is formed that is useful as a flooring composition. |
48 |
Porous ceramic sintered body for slidable member, manufacturing method thereof, and seal ring |
US11014215 |
2004-12-16 |
US20050181197A1 |
2005-08-18 |
Shinichiro Masuyama; Takeshi Hara; Kazuki Oshima |
A porous ceramic sintered body for slidable member, which has a mean pore diameter of 20 to 39 μm, and a porosity over 13.0 volume % and not more than 18.0 volume %, can be obtained by: forming bubbles by removing organic matter from a ceramic green body containing ceramic powder, forming aid, and pore forming material which is resin beads selected from suspension-polymerized non-cross-linked polystyrene and suspension-polymerized non-cross-linked styrene-acryl copolymer; followed by heating and sintering. The porous ceramic sintered body is used as a slidable member such as a seal ring. |
49 |
Low expansion, high porosity, high strength cordierite body and method |
US10174345 |
2002-06-17 |
US20030012923A1 |
2003-01-16 |
Douglas
M.
Beall; Christopher
J.
Malarkey; Gregory
A.
Merkel |
A sintered ceramic that exhibits an average linear coefficient of thermal expansion (25-800 null C.) below about 5.0null10null7null C., a total porosity between the range of 20% to about 30%. Furthermore, the sintered ceramic article exhibits a pore size distribution such that at least about 86% of pores are of a pore size of less than about 2 nullm. Lastly, the ceramic article exhibits an interconnected pore structure with the pores exhibiting a generally elongated shape, i.e., the pores are predominately oriented with their long axis in the plane of the webs. This invention also relates to a method for producing a sintered cordierite ceramic article involving first compounding and plasticizing a cordierite-forming inorganic powder batch comprising a platy talc having median particle of size less than about 2 nullm, and preferably a talc morphology index greater than about 0.75. The batch further comprises at least 4% by weight of the inorganic powder batch mixture of a dispersible Al2O3-forming source having a specific surface area in excess of 50 m2/g and one or more of the components of kaolin, calcined kaolin, silica, and corundum, each having a median particle sizes less than 5 nullm. The plasticized powder batch thus provided is next formed into a green honeycomb by extrusion through a honeycomb extrusion die and the green honeycomb is fired to a temperature and for a time sufficient to convert the green honeycomb into a crystallized cordierite ceramic article having the aforementioned properties. |
50 |
Fabrication of low thermal expansion, high strength cordierite structures |
US09443758 |
1999-11-19 |
US06319870B1 |
2001-11-20 |
Douglas M. Beall; Martin J. Murtagh |
The present invention is directed at sintered ceramic articles exhibiting a crystalline phase assemblage comprising, by weight, of 65-95% cordierite and 5-35% of a secondary phase selected from the group consisting of mullite, magnesium-aluminate spinel, and sapphirine and having a bulk analytical composition consisting essentially of about, by weight, 32-51% SiO2, 35-49% Al2O3, 7-16% MgO. Furthermore, the ceramic articles exhibit an effective strength of greater than about 3000, a CTE of less than about 15×10−7/° C., over the temperature range of 25° C., to 1000° C., and a total intrusion porosity, as measured by a Hg intrusion method, of at least 20%. This invention also relates to a method for producing a sintered ceramic article having the aforementioned cordierite and secondary minor phase mixture. |
51 |
Methods of producing concretes containing class C fly ash that are
stable in sulphate environments |
US195268 |
1994-02-14 |
US5578122A |
1996-11-26 |
Ramon L. Carrasquillo |
Methods for combining Class C fly ash into cementitious mixtures for producing concretes that are resistant to sulfate-containing environments. In one method, Class C fly ash is intergound with portland cement clinker and gypsum to produce a cementitions mixture, which, when combined with water and an aggregate produces a hardened concrete that is resistant to sulfate environments. Alternatively, portland cement clinker and gypsum are first interground and the resultant mixture is admixed with Class C fly ash to produce a cementitious mixture. Thie cementitious mixture, in combination with water and an aggregage, produces a hardened concrete that has improved resistance to sulfate environments. In other aspects, a concrete that is stable in sulfate environments is produced by admixing portland cement, Class C fly ash and water containing a source of ions selected from the group consisting of sulfate and hydroxyl anions. The resultant concrete is capable of hardening in sulfate environments without the formation of such quantities of volume-expanding compositions in the hardened concrete as would cause the hardened concrete to undergo stress failure. |
52 |
High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same |
US11823580 |
2007-06-28 |
US08709577B2 |
2014-04-29 |
Douglas Munroe Beall; Yves Andre Henri Brocheton; Gregory Albert Merkel |
The present invention describes a high porosity (% P≧45%), refractory, ceramic article comprising a cordierite ceramic phase and at least about 0.1 wt. % of a rare earth oxide, such as yttrium oxide or lanthanum oxide. When compared to typical high-porosity cordierite articles, the articles of the present invention may exhibit relatively high strength, relatively low microcracking, relatively high strain tolerance (MOR/E), and/or relatively high thermal shock resistance (TSP). |
53 |
METHOD FOR PRODUCTING A DENTAL RESTORATION BY CAD CASTING |
US13997573 |
2011-12-23 |
US20140008826A1 |
2014-01-09 |
Stephan Dierkes; Severin Seifert; Roland Strietzel |
A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of c) working the dental restoration (D), and h) veneering the dental restoration (D).A novel embedding compound (EM) is also described that has no expansion or at least only a slight expansion on setting. |
54 |
Compositions and Methods for Well Completions |
US13814724 |
2010-08-18 |
US20130153221A1 |
2013-06-20 |
Anthony Loiseau; Alice Chougnet-Sirapian; Elena Tomilina; Simon Gareth James |
Incorporation of carbonaceous materials in a cement slurry increases the linear thermal-expansion coefficient of the set cement. When placed in a subterranean well having at least one casing string, cement sheaths with linear thermal-expansion coefficients similar to that of the casing will be subjected to lower compressive and tensile stresses during downhole-temperature changes. Such cement slurries are particularly advantageous in the context of thermal-recovery wells. |
55 |
Effective Approach to Preventing and Remedying Distresses in Soils and Construction Materials |
US13468106 |
2012-05-10 |
US20120216720A1 |
2012-08-30 |
Yun Deng; Lianxiang Du |
Methods for preventing, reducing, or eliminating construction heave, expansion, distresses, and damage primarily caused by the formation of ettringite are disclosed including introducing fluoride ion releasing agent/salt(s), such as sodium fluoride, calcium fluoride, and potassium fluoride, to expansive soil layers or concrete structural elements and allowing the fluoride ion releasing agent/salt(s) at ambient temperature to react with formed ettringite and to prevent the formation of ettringite of the expansive soil layers or concrete structural elements. Other embodiments are described and claimed. |
56 |
High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same |
US11823580 |
2007-06-28 |
US20120177875A1 |
2012-07-12 |
Douglas Munroe Beall; Yves Andre Henri Brocheton; Gregory Albert Merkel |
The present invention describes a high porosity (% P≧45%), refractory, ceramic article comprising a cordierite ceramic phase and at least about 0.1 wt.% of a rare earth oxide, such as yttrium oxide or lanthanum oxide. When compared to typical high-porosity cordierite articles, the articles of the present invention may exhibit relatively high strength, relatively low microcracking, relatively high strain tolerance (MOR/E), and/or relatively high thermal shock resistance (TSP). |
57 |
Effective Approach to Preventing and Remedying Distresses in Soils and Construction Materials |
US12536572 |
2009-08-06 |
US20110033247A1 |
2011-02-10 |
Yun Deng; Lianxiang Du |
This invention describes a simple and effective method, through introducing fluoride ion releasing agent/salt(s), such as sodium fluoride, for preventing, reducing or eliminating the undesirable construction heave/expansion/distresses/damage, characterized by loss of dimensional stability and integrity of expansive soil layers or concrete structural elements, primarily caused by the formation of ettringite or similar minerals. We demonstrated the technology that can be easily applied to new construction sites and to the sites where repair/retrofit of the existing or potential distresses in soil subgrade, base, subbase, or construction materials is needed. Experiments have demonstrated the effectiveness and efficiency of the technology with applications to stabilization of soils with all range of aluminum and sulfate contents including more than 3000 ppm of sulfate, and to treating cementitious construction materials. This invention can also extend the application of lime to stabilization of sulfate-rich soils and remedy of foundation movement or tilting of buildings caused by the formation of ettringite. |
58 |
Diesel particulate filter |
US11880349 |
2007-07-20 |
US07879126B2 |
2011-02-01 |
Aleksander J. Pyzik; Robert A. Newman; Nicholas M. Shinkel |
An improved particulate filtration system has an inlet, for the fluid to be filtered, connected to a housing containing a filter medium such that the fluid passes through the filter medium, and an outlet for the filtered fluid to exit. The filtration system's improvement is the filter medium being comprised of a porous ceramic of fused platelet grains. In a particular embodiment, the porous ceramic is a celsian porous ceramic, where the celsian grains have a hexagonal morphology and display a continuous volume thermal expansion coefficient from 100° C. to 1000° C. |
59 |
Composition comprising a phosphate binder and its preparation |
US12391822 |
2009-02-24 |
US07736429B2 |
2010-06-15 |
Pakiza Mohammad |
A binder, a composition, a product and a kit, as well as a process for preparing the binder and composition, are directed to a composition useful as an inorganic phosphate binder, which binder is characterized as having calcium silicate sites which are connected the one with the other by alumina-silica phosphate bonds, and a filler. |
60 |
MONOLITHIC REFRACTORY MATERIAL HAVING LOW EXPANSIBILITY, HIGH STRENGTH, AND CRACK EXTENSION RESISTANCE |
US12035082 |
2008-02-21 |
US20090149311A1 |
2009-06-11 |
Tsuneo Komiyama; Osamu Yamakawa; Tetsuhiro Honjo; Akito Higuchi |
The invention relates to a Monolithic refractory material used in refractories and refractory ceramic products, and more particularly to a Monolithic refractory material having low expansibility, high strength, and crack extension resistance used for the purpose of repairing, protecting, modifying, filling, and forming the surface, adhesive surface, interface, or joint of low-expansion fire bricks and refractory ceramic products. The Monolithic refractory material of the invention is a Monolithic refractory material prepared by kneading cordierite powder, having a median diameter in a range of 10 to 50 μm, and a sharp mountain-like particle size distribution in which the content of particles smaller than 10 μm is 1% or more to 36% or less, the content of particles ranging from 10 μm or more to 50 μm or less is 50% or more to 75% or less, and the content of particles of 51 μm or more is 1% or more to 14% or less, and a solvent composed of water and alumina sol or silica sol solution. |