| Patent Number |
Title Of Patent |
Date Issued |
| RE33856 |
Terpolymer compositions for aqueous drilling fluids |
March 24, 1992 |
| A method of improving high temperature fluid loss and rheology stabilization of high calcium brine clay-containing oil well drilling fluids which comprises adding thereto a stabilizing amount of a water-soluble terpolymer composition comprising:said composition containing lignin, modifie |
| RE33855 |
Terpolymer composition for aqueous drilling fluids |
March 24, 1992 |
| A method of improving high temperature fluid loss and rheology stabilization of high calcium brine clay-containing oil well drilling fluids which comprises adding thereto a stabilizing amount of a water-soluble terpolymer composition comprising:said composition containing lignin, modifie |
| RE30066 |
Method for selectively removing chromates |
August 7, 1979 |
| Removal of chromate ions from water containing a large amount of total dissolved solids by contacting the water with an acidified weakly basic anion exchange resin, preferably in .[.microporous.]. .Iadd.macroporous .Iaddend.form, to selectively remove chromates from the water. |
| RE29241 |
Water clarification process |
May 31, 1977 |
| 1. A process for clarifying water which has solid materials suspended therein and which has at least 0.1 ppm of residual chlorine comprising the steps of adding a minor amount of a .Iadd.condensation .Iaddend.polymer .[..[.of ammonia and ethylene dichloride.]..]. .Badd.selected from the |
| 6461518 |
Method for inhibiting the formation and deposition of silica scale in water systems |
October 8, 2002 |
| This invention relates to a method for inhibiting the formation and deposition of silica scale in water systems. The method includes treating the water in such water systems with an effective amount of a polyamide that contains secondary amine and/or ether and amide functional groups. |
| 6451169 |
Structurally rigid polymer coagulants as retention and drainage aids in papermaking |
September 17, 2002 |
| This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid polymeric coagulant and an effective flocculating amount of a flocculant and a microparticle. |
| 6444091 |
Structurally rigid nonionic and anionic polymers as retention and drainage aids in papermaking |
September 3, 2002 |
| This invention concerns a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective amount of a structurally rigid nonionic or anionic polymer. |
| 6440476 |
Method to improve quality and appearance of leafy vegetables by using stabilized bromine |
August 27, 2002 |
| A method to extend the shelf-life, reduce the microbial load, and enhance product appearance and quality in leafy vegetables or other fresh commodities of the like comprising applying directly to the leafy vegetable a stabilized aqueous alkali or alkaline earth metal hypobromite solu |
| 6436711 |
Fluorometric control of aromatic oxygen scavengers in a boiler system |
August 20, 2002 |
| A method of automatically controlling the addition rate of Fresh Oxygen Scavenger Product and Ultimate Oxygen Scavenger Product to a Boiler System is described and claimed. The method is based on the inherent fluorometric properties of certain Fresh Oxygen Scavenger Products and certain |
| 6432271 |
Method of increasing retention and drainage in papermaking using high molecular weight water-sol |
August 13, 2002 |
| This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer. |
| 6426383 |
Preparation of water soluble polymer dispersions from vinylamide monomers |
July 30, 2002 |
| The present invention relates to a novel process for the production of a water soluble polymer dispersion from vinylamide monomers, and, more particularly, polymers formed from N-vinylformamide monomers. |
| 6423801 |
Branched polyammonium compounds of high molecular weight and processes for producing said compou |
July 23, 2002 |
| The invention is concerned with water soluble high-molecular weight quaternary ammonium graft polymer, wherein ammonium salt side chains are grafted onto a polyamine backbone under free radical conditions, and wherein the initiator system comprises a free radical-producing oxidizing |
| 6423267 |
Stable oxidizing bromine formulations, method of manufacture and uses thereof for biofouling con |
July 23, 2002 |
| Stable biocide formulations containing oxidizing bromine are provided for biofouling control in industrial water systems. The formulations contain at least one stable oxidizing bromine compound that is prepared from at least one oxidizing chemical reagent, at least one bromine source and |
| 6419879 |
Composition and method for controlling biological growth using stabilized sodium hypobromite in |
July 16, 2002 |
| A synergistic composition and method for controlling biological growth in industrial fluids are disclosed, wherein the composition comprises stabilized sodium hypobromite and at least one compound selected from the group consisting of coco alkyldimethylamine oxide, n-coco alkyltrimet |
| 6413433 |
Method for dewatering of sludge |
July 2, 2002 |
| A process for dewatering of sludge, wherein said sludge comprises solids and water, comprising the steps of:a) adding a cationic dispersion polymer and a microparticle to said sludge, wherein said cationic dispersion polymer can be added before or after or simultaneous with the addition |
| 6403726 |
Water soluble polymer containing dithiocarbamate functionalities |
June 11, 2002 |
| The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities t |
| 6398967 |
Method of clarifying water using low molecular weight cationic dispersion polymers |
June 4, 2002 |
| This invention is directed to a method of clarifying water comprising adding to the water an effective clarifying amount of a low molecular weight water-soluble cationic dispersion polymer prepared by polymerizing one or more cationic monomers and one or more nonionic monomers and one or |
| 6380431 |
Fluorescent monomers |
April 30, 2002 |
| Fluorescent monomers are described and claimed. |
| 6379720 |
Compositions containing hops extract and their use in water systems and process streams to contr |
April 30, 2002 |
| Biological fouling is effectively controlled in water systems and process streams through the addition of hops extract. |
| 6375829 |
Method and apparatus for measuring scaling capacity of calcium oxalate solutions using an electr |
April 23, 2002 |
| This invention is directed to a method and apparatus for measuring the rate of calcium oxalate scale formation in a continuously flowing solution having a pH of from about 2 to about 3 comprising measuring the rate of deposition of calcium oxalate scale from the solution on to a quartz |
| 6372882 |
Method for producing substantially dry water-insoluble polymers for improved flocculation in the |
April 16, 2002 |
| The present invention is a method of producing substantially dry water insoluble polymers from poly alkyl esters of vinylic monomers for use in a method for the clarification of red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite ore. The |
| 6372806 |
Method of making colloidal silica |
April 16, 2002 |
| Disclosed are stable, aqueous colloidal silicas having surface area of greater than 700 m.sup.2 /g and S-values of from 20-50. These colloidal silicas do not require treatment with surface treatment agents such as aluminum to achieve stability. These colloidal silica aquasols can be |
| 6372805 |
Colloids comprising amorphous borosilicate |
April 16, 2002 |
| Colloids comprising amorphous borosilicate particles, wherein said borosilicate particles are not borosilicate glass; are described and claimed. These colloids have been found to be useful in aqueous systems, specially in papermaking. |
| 6372089 |
Method of making paper |
April 16, 2002 |
| Disclosed are stable, aqueous colloidal silicas having surface area of greater than 700 m.sup.2 /g and S-values of from 20-50. These colloidal silicas do not require treatment with surface treatment agents such as aluminum to achieve stability. These colloidal silica aquasols can be |
| 6369894 |
Modular fluorometer |
April 9, 2002 |
| Described and claimed is a modular fluorometer and a method of using same to control an industrial water system, wherein said modular fluorometer comprises:one or more units with each unit comprising:a channel comprising an optically appropriate cell through which a water sample flows;a |
| 6369182 |
Cationic latex terpolymers for wasterwater treatment |
April 9, 2002 |
| This invention is directed to a cationic terpolymer comprising(a) a first monomer unit selected from acrylamide and methacrylamide;(b) a second monomer unit selected from dimethylaminoethyl acrylate methyl chloride quaternary salt, 3-(acrylamido)propyltrimethylammonium chloride, 3-(methacryl |
| 6365116 |
Rheology modification of settled solids in mineral processing |
April 2, 2002 |
| The present invention comprises a method for reducing the viscosity of the settled mud or underflow of a raked thickener thereby reducing the torque necessary to move the rake blade through the settled mud. The method includes the step of delivering a viscosity modifier to the settled mu |
| 6365052 |
Very high molecular weight cationic dispersion polymers for dewatering animal farm wastewater |
April 2, 2002 |
| This invention is directed to a method of dewatering animal farm waste water comprising:(1) adding an effective amount of a cationic dispersion polymer having an RSV of at least 24, the dispersion polymer prepared by polymerizing under free radical forming conditions in an aqueous soluti |
| 6361653 |
Method of increasing retention in papermaking using colloidal borosilicates |
March 26, 2002 |
| The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculent and/or starch, with or without the ad |
| 6361652 |
Method of increasing drainage in papermaking using colloidal borosilicates |
March 26, 2002 |
| The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the ad |
| 6358746 |
Fluorescent compounds for use in industrial water systems |
March 19, 2002 |
| Fluorescent compounds of the formula: ##STR1##wherein R.sub.1 and R.sub.2 are either both SO.sub.3 M, or one of R.sub.1 and R.sub.2 is SO.sub.3 M and the other is COOM, where M is selected from the group consisting of H, Na, K, Rb, Cs, Li or ammonium, are described and claimed. These |
| 6358364 |
Method for flocculating a papermaking furnish using colloidal borosilicates |
March 19, 2002 |
| The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the ad |
| 6352675 |
Process for removing heavy metals from a caustic fluid stream |
March 5, 2002 |
| The present invention provides both reagents and a process for removing heavy metals from a caustic fluid stream by the addition of reagents which are not corrosive or deleterious. Specifically, the present invention is directed to removing heavy metals from a Bayer liquor in an aluminum |
| 6344531 |
Fluorescent water-soluble polymers |
February 5, 2002 |
| Water-soluble polymers of Formula Useful comprising from about 0.001 to about 10.0 mole percent of a Repeating Mer Unit represented by the formula: ##STR1##wherein a is an integer of from 1 to 10, R.sub.1 is selected from the group consisting of hydrogen and methyl groups, R.sub.2 an |
| 6336058 |
Use of control matrix for boiler control |
January 1, 2002 |
| Described and claimed is a method of controlling a boiler in which control is based on information from a control Matrix applicable to the specific parameters of the boiler. The control matrices include (a) Polymer Based All-in-One Product; (b) Residual Phosphate Polymer Product with Sca |
| 6331229 |
Method of increasing retention and drainage in papermaking using high molecular weight water-sol |
December 18, 2001 |
| This invention is directed to a method of increasing retention and drainage in a papermaking furnish comprising adding to the furnish an effective flocculating amount of a high molecular weight water-soluble anionic or nonionic dispersion polymer. |
| 6329165 |
Measurement and control of sessile and planktonic microbiological activity in industrial water s |
December 11, 2001 |
| A method for monitoring both the planktonic and sessile microbial populations in an industrial water system by the addition of a fluorogenic dye compound is described and claimed. |
| 6322749 |
Composition and method for inhibiting the growth of microorganisms including stabilized sodium h |
November 27, 2001 |
| A synergistic composition and method for inhibiting microbiological growth which comprises a combination of stabilized sodium hypobromite with a mixture of 5-chloro-2-methyl 4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one. |
| 6315909 |
Use of control matrix for cooling water systems control |
November 13, 2001 |
| Described and claimed is a method of controlling a cooling water system in which control is based on information from a control Matrix applicable to the specific operating parameters of the cooling water system including:(i) providing a suitable fluorometer, sufficient analytical devices and |
| 6315866 |
Method of increasing the dry strength of paper products using cationic dispersion polymers |
November 13, 2001 |
| This invention is directed to method for improving the dry strength of a paper product using a single cationic dispersion polymer strength additive, wherein the cationic dispersion polymer is prepared by polymerizing in an aqueous solution of a polyvalent anionic salt in the presence |
| 6313246 |
High molecular weight zwitterionic polymers |
November 6, 2001 |
| This invention is directed to high molecular weight water-soluble zwitterionic polymers derived from zwitterionic and nonionic monomer units, and to the use of the polymers in papermaking processes. |
| 6312644 |
Fluorescent monomers and polymers containing same for use in industrial water systems |
November 6, 2001 |
| Fluorescent monomers of the formula ##STR1##wherein M is selected from the group consisting of hydrogen, sodium, potassium, cesium, rubidium, lithium and ammonium, andn is selected from the group consisting of 1, 2, 3, 4, 6 and 9;are provided which are useful in the production of pyranine-ta |
| 6310104 |
Process for producing colloidal borosilicates |
October 30, 2001 |
| The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the ad |
| 6306308 |
Inorganic composition, process of preparation and method of use |
October 23, 2001 |
| A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl.sub.3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids an |
| 6293973 |
Method of controlling oxalate precipitation in bayer process liquor |
September 25, 2001 |
| A method is disclosed for controlling the precipitation of soluble sodium oxalate in Bayer process liquor which comprises adding a surface active quaternary ammonium compound to the Bayer process liquor and then subsequently adding a mixture of a hydrophobic oil and at least one surf |
| 6287473 |
Stable oxidizing bromine formulations, method of manufacture and uses thereof for biofouling con |
September 11, 2001 |
| Stable oxidizing bromine compounds are prepared by preparing a caustic solution comprising a halogen stabilizer, water and an alkali or alkaline earth metal hydroxide, the halogen stabilizer being selected from the group consisting of R--NH.sub.2, R--NH--R.sup.1, R--SO.sub.2 --NH.sub.2, |
| 6280635 |
Autocycle control of cooling water systems |
August 28, 2001 |
| An autocycle method to control a cooling water system comprising the steps of:a) adding a treatment product to said cooling water system, with said treatment product comprising inert tracer and tagged treatment polymer in a set proportion;b) providing a sufficient number of fluorometers, |
| 6280631 |
Use of polymers containing vinylamine/vinylformamide for the treatment of food processing wastew |
August 28, 2001 |
| The present invention provides a method for conditioning food processing waste prior to mechanical dewatering with the use of environmentally friendly coagulants and flocculants. The method of the present invention comprises treating these waste waters with an effective amount of a v |
| 6270722 |
Stabilized bromine solutions, method of manufacture and uses thereof for biofouling control |
August 7, 2001 |
| Stabilized bromine solutions are prepared by combining a bromine source and a stabilizer to form a mixture, adding an oxidizer to the mixture, and then adding, an alkaline source to adjust the pH of the mixture to at least 13. |
| 6270627 |
Use of colloidal borosilicates in the production of paper |
August 7, 2001 |
| The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or starch, with or without the ad |
