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Calcium Sulfate

Calcium Sulfate-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Exhaust gas clean-up and recovery system for fossil fuel fired power plant
Millenium Synthfuels Corporation
February 08, 2018 - N°20180036676

A fossil fuel fired power plant exhaust gas clean-up and recovery system is provided to remove detrimental compounds/elements from the exhaust gas emitting from the power plant to protect the environment and to recover useful products from the cleaning solution. This is accomplished by directing the exhaust gas from the fossil fuel fired power plant through a single wet ...
Bone repairing material and method for producing thereof
3d Global Biotech Inc.
January 18, 2018 - N°20180015206

A bone repairing material comprises a composition including an α-calcium sulfate hemihydrate and an autologous bone powder, wherein the bone repairing material contains 20˜60 weight percent of the autologous bone powder and 40˜80 weight percent of the α-calcium sulfate hemihydrate. The bone repairing material has a particle size in the range of 50˜1,000 &#...
Method for producing alpha-calcium sulfate hemihydrate bone graft
3d Global Biotech Inc.
January 18, 2018 - N°20180015200

The present invention discloses a method for producing the alpha-calcium sulfate hemihydrate bone graft, which comprises the following steps: mixing calcium sulfate dihydrate and deionized water to produce calcium sulfate dihydrate paste; stirring and heating the calcium sulfate dihydrate paste at least 160° c. Within 100-350 psi to produce the conversion calcium sulfate hemihydrate, filtering the conversion calcium sulfate hemihydrate ...
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Bioactive composites with function of radiopacity
Montjade Engineering Co., Ltd.
January 04, 2018 - N°20180002483

A bioactive composite includes 10% to 40% by weight of calcium sulfate (caso4), 10% to 20% by weight of tantalum pentoxide (ta2o5), and 40% to 80% of polyetheretherketone (peek). Calcium sulfate is anhydrous calcium made by removing crystallization water of beta calcium sulfate hemihydrate.
Gypsum fiber board and method for producing gypsum fiber boards
Knauf Gips Kg
December 21, 2017 - N°20170362126

A gypsum fiber board produced in a siempelkamp dry-process, comprising 75 wt % to 90 wt % (relative to the total dry mix) of calcium sulfate hemi-hydrate and 10 wt % to 25 wt % (relative to the total dry mix) paper fibers, wherein the calcium sulfate hemi-hydrate is a mixture of α-calcium sulfate hemi-hydrate and β-calcium sulfate hemi-hydrate, wherein the content of ...
Pourable compositions
United States Gypsum Company
December 07, 2017 - N°20170349492

The invention provides a pourable composition comprising calcium sulfate hemihydrate; optionally, cement; one or more anionic surfactants selected from alkyl anionic surfactants, alkyl ether anionic surfactants, alkyl aryl anionic surfactants, and combinations thereof; one or more set accelerator additives; and water.
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Antifouling coating composition, antifouling coating film formed using said composition, and coated article having antifouling ...
October 26, 2017 - N°20170306168

(here, r1 is a hydrogen atom or a methyl group; and r2, r3, and r4 are the same or different from each other and each represents a c3-6 alkyl group branched at the α-position or a phenyl group) and (b) an ethylenically unsaturated monomer copolymerizable with the triorganosilyl (meth)acrylate monomer; and (b) calcium sulfate hydrate.
Production of high strength hydrochloric acid from calcium chloride feed streams by crystallization
The Royal Institution For The Advancement Of Learning/mcgill University
October 12, 2017 - N°20170291826

The present relates to a method for producing calcium sulfate solid crystals and hydrochloric acid (hcl) from a calcium chloride solution comprising the steps of feeding a continuous stirred-tank reactor with a calcium chloride solution, sulfuric acid and water; mixing the calcium chloride solution, sulfuric acid and water in the reactor; and maintaining the reactor a temperature of less than ...
Gypsum based compositions and processes for making and using same
Georgia-pacific Gypsum Llc
September 21, 2017 - N°20170267587

Gypsum based compositions, processes for making same, and articles made therefrom. In one example, the gypsum based composition can include about 1. 5 wt % to about 3 wt % of a starch, about 11 wt % to about 14 wt % of a paper, about 0. 7 wt % to about 2. 3 wt % of vermiculite, about 1. 3 wt % to about 3 wt % of a plurality of reinforcing fibers, about 7 wt % to about 10 wt % of ...
Method for preparing a-calcium sulfate hemihydrate with calcium sulfate dihydrate
Shandong Borui New Material Technology Co., Ltd
August 31, 2017 - N°20170247262

A method for preparing α-calcium sulfate hemihydrate with calcium sulfate dihydrate includes steps of: uniformly mixing the calcium sulfate dihydrate with an additive solution, and obtaining a mixture, wherein weight percentages of the calcium sulfate dihydrate and the additive solution in the mixture are respectively 90. 00-95. 00% and 5. 00-10. 00%, and the additive solution contains water, inorganic salt, organic salt, ...
Cementitious binders containing pozzolanic materials
Green Binder Technologies Ltd.
July 20, 2017 - N°20170204007

A cementitious composition including: a binder containing (a) 60-94%, by weight, of at least one pozzolanic material; (b) at least 0. 5% calcium sulfoaluminate (csa), by weight; (c) 1. 2-11% by weight, expressed as so3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium ...
Method for producing porous calcium deficient hydroxyapatite granules
Bioventus, Llc
July 13, 2017 - N°20170197833

The method is for producing porous calcium deficient hydroxyapatite granules and comprises the following steps: (a) subjecting granules of calcium sulfate anhydrous (csa), calcium sulfate dihydrate (csd) or calcium sulfate hemihydrate (csh) to an incubation in an alkaline aqueous solution having a ph-value of less than 10 and containing po43− ions; whereby the granules of calcium sulfate anhydrous (csa), calcium ...
Drilling fluid and method for drilling a wellbore
Canadian Energy Services L.p.
June 22, 2017 - N°20170174973

A method for drilling a wellbore into a formation. The method includes: providing a mixed metal-viscosified drilling fluid including at least 1% potassium salt and/or at least 0. 05% calcium sulfate; circulating the drilling fluid through the well; and drilling into a formation. An anionic thinner may be added if the clay concentration of the drilling fluid reaches a problematic level to ...
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Dimensionally stable geopolymer composition and method
United States Gypsum Company
June 22, 2017 - N°20170174570

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium sulfoaluminate cement, a calcium sulfate and ...
Freeze-thaw durable geopolymer compositions and methods for making same
United States Gypsum Company
June 15, 2017 - N°20170166481

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium sulfate; alkali metal chemical activator; and a freeze-thaw durability component ...
Method for producing porous calcium deficient hydroxyapatite granules
Mathys Ag Bettlach
June 08, 2017 - N°20170158510

The method is for producing porous calcium deficient hydroxyapatite granules and comprises the following steps: (a) subjecting granules of calcium sulfate anhydrous (csa), calcium sulfate dihydrate (csd) or calcium sulfate hemihydrate (csh), the granules comprising interconnected pores with a minimum mean diameter of 3 microns, to a first incubation in an alkaline aqueous solution having a ph-value of less than 10 and ...
Bone void filler having calcium coatings
Warsaw Orthopedic, Inc.
May 04, 2017 - N°20170119926

A bone void filler material is provided for sustained release of a therapeutic agent. The bone void filler material comprising a biodegradable matrix having ceramic cement beads comprising calcium sulfate, and ceramic particles disposed within the matrix. The ceramic cement beads are loaded with the therapeutic agent to cause sustained release of the therapeutic agent. Methods of use are also ...
Freeze-thaw durable geopolymer compositions and methods for making same
United States Gypsum Company
April 27, 2017 - N°20170113969

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium sulfate; alkali metal chemical activator; and a freeze-thaw durability component ...
Cement and calcium sulfate based binder composition
Basf Se
April 20, 2017 - N°20170107153

The invention concerns a composition containing a) 2 to 80 weight % of ordinary portland cement with respect to the total weight of the composition b) 2 to 80 weight % of a calcium sulfate based binder with respect to the total weight of the composition, with the proviso that the weight ratio of a) ordinary portland cement to b) calcium sulfate based binder is from 95/5 ...
Brine treatment scaling control system and method
Carollo Engineers, Inc.
April 06, 2017 - N°20170096351

A system for brine treatment scaling control in a water treatment system is described. In the system, a concentrated brine stream influent may be treated in an electrodialysis-reversal process to produce a concentrated brine stream effluent and a lower salinity diluent water, which may be potable water effluent. The concentrated brine stream effluent may be processed in a brine treatment ...
High strength synthetic bone for bone replacement for increasing ompressive strength and facilitating blood circulation, ...
Ossein Co., Ltd.
March 09, 2017 - N°20170065740

The present invention relates to a high strength synthetic bone for bone replacement for increasing compressive strength and facilitating blood circulation, and a manufacturing method therefor, and provides the high strength synthetic bone for bone replacement in which calcium sulfate hemihydrate (csh) and nacl, in a particle state, penetrate into the pores of a porous inorganic material such as ...
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