| Patent Number |
Title Of Patent |
Date Issued |
| 7387769 |
Method and apparatus for continuous gas liquid reactions |
June 17, 2008 |
| A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in |
| 7150839 |
Fluorescent agents |
December 19, 2006 |
| Composition comprising a fluorescent material comprising the mixture of one or more metal salts selected from the group consisting of metal oxides and metal hydroxides; one or more carbohydrate(s) selected from the group consisting of sugar and starch; and one or more organic acid(s) |
| 7033428 |
Acid stabilized calcium carbonate an method of making it |
April 25, 2006 |
| The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak |
| 6508857 |
Method for treating molten metal with cored wire |
January 21, 2003 |
| A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting the aluminum covered calcium |
| 6454907 |
Method and apparatus for concentrating slurried solids |
September 24, 2002 |
| Method and apparatus for concentrating slurries by removing liquid in a single effect unit maintained under vacuum to effect low temperature flashing of the liquid. The single effect unit is a single flash column with separate recirculation loops, one to preheat incoming slurry for c |
| 6451268 |
Method and apparatus for continuous gas liquid reactions |
September 17, 2002 |
| A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in |
| 6420289 |
Synthetic silicate pellet composition and methods of making and using thereof |
July 16, 2002 |
| A synthetic silicate pellet is provided having component of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch compo |
| 6346135 |
Cored wire for treating molten metal |
February 12, 2002 |
| A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting the aluminum covered calcium |
| 6336346 |
Synthetic silicate pellet composition and methods of making and using thereof |
January 8, 2002 |
| A synthetic silicate pellet is provided having a component(s) of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch |
| 6294143 |
Process for the preparation of discrete particles of calcium carbonate |
September 25, 2001 |
| A product and a process for the preparation of discrete calcium carbonate particles that result from preparing an aqueous calcium carbonate slurry containing carbohydrates, carbonating the aqueous calcium carbonate slurry while maintaining the selected starting carbonation temperature. T |
| 6287997 |
Method of producing synthetic silicates and use thereof in glass production |
September 11, 2001 |
| A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is performed at a lower temperature |
| 6287423 |
Paper composition for improved sheet properties |
September 11, 2001 |
| Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymers is multifunctional in its use. Optional amide substituents are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the polymer is the flexibility of |
| 6287378 |
Method of producing synthetic silicates and use thereof in glass production |
September 11, 2001 |
| A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is performed at a lower temperature |
| 6280497 |
Cored wire for treating molten metal and method of manufacture |
August 28, 2001 |
| A cored wire continuously formed by continuously inserting an extruded core inside a continuously roll formed sheath, the peripheral edges of the roll formed sheath joined by a continuous lock seam. Inspection of the partially formed lock seam at a designated process step serves to warn |
| 6271159 |
Method of producing synthetic silicates and use thereof in glass production |
August 7, 2001 |
| A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is performed at a lower temperature |
| 6228249 |
Electrolytic purification of calcium carbonate |
May 8, 2001 |
| The present invention provides an electrochemical process for reducing metal contaminants in calcium carbonate by solubilizing the metal contaminate in an aqueous solution of calcium carbonate and then removing the solubilized metal contaminant by passing an electrical current through |
| 6228161 |
Use of calcium carbonate in an acidic aqueous media |
May 8, 2001 |
| The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak |
| 6211103 |
Synthetic silicate pellet compositions |
April 3, 2001 |
| A synthetic silicate pellet is provided having component of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch compo |
| 6184258 |
Synthetic mineral microparticles for retention aid systems |
February 6, 2001 |
| A process for the production of a synthetically produced bentonite-type inorganic microparticle. The synthetic microparticle produced according to the process of the present invention is particularly useful in papermaking processes where retention, water drainage, sheet formation and tan |
| 6183650 |
Synthetic mineral microparticles and retention aid and water treatment systems and methods using |
February 6, 2001 |
| A composition comprising the product precipitated in the admixing of a soluble metal salt and one or more compounds having a component selected from silicates, phosphates and borates; and a method for controlling drainage and/or retention in the formation of a paper matrix or for tre |
| 6126783 |
Surface modified fillers for sizing paper |
October 3, 2000 |
| A hydrophobic filler material for neutral, alkaline and acidic papers is disclosed. The filler material comprises finely divided particles of an inorganic material, in admixture with a water miscible, butyl acrylate-acrylonitrile copolymer. A neutral or alkaline paper is disclosed. T |
| 6123855 |
Dewatering of calcium carbonate |
September 26, 2000 |
| The present invention relates to dewatering of an aqueous slurry of calcium carbonate. More particularly, the present invention relates to the use of non-ionic surfactants in dewatering aqueous slurries of an aragonitic precipitated calcium carbonate. Calcium carbonate slurries dewatered |
| 6090242 |
Method of improvement strength of papers |
July 18, 2000 |
| Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymer is multifunctional in its use. Optional amide substituent are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the polymer is the flexibility of us |
| 6071336 |
Acicular calcite and aragonite calcium carbonate |
June 6, 2000 |
| The present invention relates to a calcium carbonate composition having both calcite and aragonite crystalline morphology. More particularly, the present invention relates to an acicular calcite and an acicular aragonite product and a method for the production of the same and the use of |
| 6053960 |
Method of manufacture of cored wire for treating molten metal |
April 25, 2000 |
| A cored wire continuously formed by continuously inserting an extruded core inside a continuously roll formed sheath, the peripheral edges of the roll formed sheath joined by a continuous lock seam. Inspection of the partially formed lock seam at a designated process step serves to warn |
| 6022517 |
Acicular calcite and aragonite calcium carbonate |
February 8, 2000 |
| The present invention relates to a calcium carbonate composition having both calcite and aragonite crystalline morphology. More particularly, the present invention relates to an acicular calcite and an acicular aragonite product and a method for the production of the same and the use of |
| 6017991 |
Polyolefin film composition and resins useable therefore and related making method |
January 25, 2000 |
| This invention concerns a mixture of a first component selected from talcs and one or more second component(s) selected from diatomaceous earth, natural and synthetic silica, clay, ceramic spheres, volcanic ash and glass cullet wherein the ratio of the component to the second component(s |
| 5989714 |
Synthetic mineral microparticles |
November 23, 1999 |
| A composition comprising the product precipitated in the admixing of a soluble metal salt and one or more compounds having a component selected from silicates, phosphates and borates; and a method for controlling drainage and/or retention in the formation of a paper matrix or for tre |
| 5988545 |
Method for storing and dispensing cored wire |
November 23, 1999 |
| Cored wire is spirally wound on a storage reel with fixed space between each spiral in a given layer. Alternate layers are wound across the preceding layer in the same manner until the reel is full. |
| 5884851 |
Abrasion resistant lined sweep nozzle |
March 23, 1999 |
| This invention relates to a nozzle and a nozzle mix gunning system incorporating the nozzle for pneumatically propelling dry or wetted particulate gunning material toward a substrate a distance removed from the nozzle and at an angle to the line of sight of the operator. The nozzle c |
| 5861209 |
Aragonitic precipitated calcium carbonate pigment for coating rotogravure printing papers |
January 19, 1999 |
| The present invention relates to a paper coated with a coating pigment for rotogravure printing, and to a method for preparing such a paper. In addition, the invention relates to a method for the preparation of an aragonitic calcium carbonate pigment for coating paper that is useful in |
| 5783038 |
Ink jet recording paper incorporating novel precipitated calcium carbonate pigment |
July 21, 1998 |
| An improved thermal ink jet recording paper, incorporating heat aged precipitated calcium carbonate ("PCC") and a binder, is disclosed. Heat aging the PCC in the presence of an organophosphonate produces discrete particles of PCC with a surface morphology and chemistry that enhances the |
| 5759258 |
Recycling of mineral fillers from the residue of a paper deinking plant |
June 2, 1998 |
| A method of recycling mineral pigments contained in the waste produced from the deinking of wastepaper. The deink residue is heated in an oxygen-containing atmosphere to a temperature sufficient to completely oxidize all the organic hydrocarbons present. Heat, water, and carbon dioxi |
| 5755930 |
Production of filled paper and compositions for use in this |
May 26, 1998 |
| Filled paper is made by adding a cationising amount of cationic polymer to precipitated calcium carbonate or other filler either as a slurry or in a thick stock component, producing a thin stock containing the cationised filler and then treating the thin stock with a formaldehyde resin a |
| 5741471 |
Process for the preparation of discrete particles of calcium carbonate |
April 21, 1998 |
| A process for the precipitation of discrete prismatic calcium carbonate particles by carbonation of aqueous calcium hydroxide containing a saccharide or polysaccharide or a saccaride or polysaccharide and a metal ion at temperatures of from about 8.degree. C. to about 64.degree. C. is |
| 5695733 |
Clustered precipitated calcium carbonate particles |
December 9, 1997 |
| Novel precipitated calcium carbonate particles in clustered form, which when used as fillers impart improved strength, opacity and other advantages to paper, are prepared by a process involving adding lime and carbon dioxide to a reaction mixture containing seed material having a sca |
| 5690897 |
Method for purification of calcium carbonate |
November 25, 1997 |
| A method for lowering the iron content of calcium carbonate is disclosed. The method involves addition of an iron chelating agent to an aqueous calcium carbonate slurry, reducing the pH of the aqueous calcium carbonate by employing carbon dioxide containing gas, while maintaining the aqu |
| 5650121 |
Coated expendable refractory lining having improved resistance to erosive and corrosive material |
July 22, 1997 |
| The disclosed invention provides a method of forming refractory linings for maintaining refractory linings against attack by corrosive materials such as those present in steel manufacture. The method entails spraying an aqueous mixture of a refractory composition that includes at least o |
| 5634598 |
Abrasion resistant lined sweep nozzle |
June 3, 1997 |
| This invention relates to a nozzle and a nozzle mix gunning system incorporating the nozzle for pneumatically propelling dry or wetted particulate gunning material toward a substrate a distance removed from the nozzle and at an angle to the line of sight of the operator. The nozzle c |
| 5527430 |
Modified filler material for alkaline paper and method of use thereof in alkaline paper making |
June 18, 1996 |
| A hydrophobic filler material for alkaline paper is disclosed. The filler material comprises finely divided particles of an inorganic material, a majority of particles having a surface all of which is substantially modified with a water soluble C.sub.12 -C.sub.22 fatty acid salt and a |
| 5512316 |
Method of protecting ladle linings |
April 30, 1996 |
| The disclosed invention provides a method of forming refractory linings for maintaining refractory linings against attack by corrosive materials such as those present in steel manufacture. The method entails spraying an aqueous mixture of a refractory composition that includes at least o |
| 5507474 |
Lining for molten metal handling vessles |
April 16, 1996 |
| The invention is directed to a low density material suitable for use as an expendable liner in a molten metal handling vessel such as tundish. The low density materials include a first component having at least one decomposable compound capable of producing gas, a second component having |
| 5492560 |
Treatment of inorganic pigments with carboxymethylcellulose compounds |
February 20, 1996 |
| The disclosed invention relates to a composition comprising finely divided particles of an inorganic material treated with a cellulose derivative modified by or containing at least one ionic substituent. The disclosed invention further relates to a method of providing paper of improved |
| 5458679 |
Treatment of inorganic filler material for paper with polysaccharides |
October 17, 1995 |
| The disclosed invention relates to a composition comprising finely divided cationically charged particles of an inorganic material treated with at least one of anionic polysaccharide or anionically modified polysaccharide. The disclosed invention further relates to a method of provid |
| 5443634 |
Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps |
August 22, 1995 |
| A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to |
| 5437720 |
Spheroidal aggregate of platy synthetic hydrotalcite |
August 1, 1995 |
| An aggregated synthetic hydrotalcite having a substantially spheroidal shape and an average diameter of up to about 60 .mu.m is disclosed. The aggregates are composed of individual platy particles having plate diameters of from about 0.05 to about 10 .mu.m. The material has a low tap |
| 5380361 |
Modified filler material for alkaline paper and method of use thereof in alkaline paper making |
January 10, 1995 |
| A hydrophobic filler material for alkaline paper is disclosed. The filler material comprises finely divided particles of an inorganic material, a majority of particles having a surface all of which is substantially modified with a water soluble C.sub.12 -C.sub.22 fatty acid salt and a |
| 5302563 |
Sprayable refractory composition |
April 12, 1994 |
| The present invention discloses an alkali oxide free low density refractory material especially adapted for use as a disposable liner material for molten metal containing vessels. This material includes about 0.1 to about 2 weight percent of a stiffening agent, about 0.1 to about 2 weigh |
