Using Halogen Or Halogen-containing Compound Patents (Class 422/37)
  • Publication number: 20030156980
    Abstract: A viscous disinfectant comprising sodium hypochlorite, water, and a thickening agent (e.g., fumed silica) is used to disinfect and sanitize a root canal during an endodontic procedure. The viscosity of the disinfectant enables the disinfectant to adhere to the walls of the root canal so that the sodium hypochlorite can disinfect and sanitize the walls of the root canal in a desired and controlled manner. The root canal is accessed and cleaned with endodontic tools, during which pulp is removed from the root canal. The viscous disinfectant is introduced into the root canal and adheres to the walls of the root canal until it is removed. While in the root canal, the viscous disinfectant disinfects and sanitizes the root canal so that it can be filled and sealed according to endodontic procedure.
    Type: Application
    Filed: January 16, 2002
    Publication date: August 21, 2003
    Inventors: Dan E. Fischer, Peter M. Allred
  • Patent number: 6607696
    Abstract: Disclosed are apparatus for delivery of a gas, e.g., carbon dioxide and/or chlorine dioxide, and methods of its use and manufacture. The apparatus includes an envelope, and a sachet within the envelope that contains reactant, which generates a gas in the presence of an initiating agent, e.g., water. The envelope allows release of the gas from the envelope. In another embodiment, the apparatus includes an envelope and a partition that separates two reactants within the envelope. The envelope allows an initiating agent into the envelope and release of the gas generated by the reactants in the presence of the initiating agent.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: August 19, 2003
    Assignee: Selective Micro Technologies, LLC
    Inventors: Richard A. Hamilton, John J. Warner
  • Patent number: 6605253
    Abstract: The presently disclosed disinfection process for use in the processing of foodstuffs is designed as an intervention step in poultry processing to allow for continuous on-line processing of poultry carcasses that may have accidentally become contaminated during the evisceration process. Such on-line processing is designed to replace the need for off-line manual washing and cleaning of the contaminated carcasses. By eliminating such off-line manual washing, food safety will be enhanced due to the elimination of the physical handling of carcasses and the cross-contamination that may result from such physical handling. An additional benefit is that the production process will also be able to run with a reduced number of interruptions, which will result in a more efficient production process.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: August 12, 2003
    Assignee: Zentox Corporation
    Inventor: Michael Perkins
  • Patent number: 6602466
    Abstract: Disclosed are apparatus for delivery of a gas, e.g., carbon dioxide and/or chlorine dioxide, and methods of its use and manufacture. The apparatus includes an envelope, and a sachet within the envelope that contains reactant, which generates a gas in the presence of an initiating agent, e.g., water. In another embodiment, the apparatus includes a barrier layer, a sachet layer disposed adjacent to the barrier layer, a reactant disposed between the barrier layer and the sachet layer that generates a gas in the presence of an initiating agent, and an envelope layer disposed adjacent to the sachet layer.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: August 5, 2003
    Assignee: Selective Micro Technologies, LLC
    Inventors: Richard A. Hamilton, John J. Warner
  • Patent number: 6602465
    Abstract: The general purpose of this invention is to provide an improved apparatus and method of preserving the vulnerable area of a railroad cross tie near the interface of the tie and the tie plate. To attain this purpose the invention provides a thin preservative-bearing gelatinous material that is placed between the cross tie and the tie plate either at the time of the original laying of rail or during any subsequent relaying. No extra equipment is needed and only a negligible amount of labor is required to simply place the gelatinous material on the adzed surface of the cross tie prior to the mounting or remounting of the rail. The presence of the gelatinous material poses absolutely no resistance to the subsequent driving of the spikes into the tie and is thin enough so as not to pose any rail alignment problems. The use of the gelatinous material relies on the moisture found under the tie plate to leach the active ingredients out of the material and help diffuse them throughout the adjacent section of wood.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: August 5, 2003
    Assignee: S-T-N Holdings, Inc.
    Inventors: David J. Ostby, Michael J. Maloney
  • Publication number: 20030143187
    Abstract: The present invention is a method of using a polymeric N-halamine biocidal material as an agent preferably used in conjunction with a matrix material for the reduction of noxious odors caused by the decomposition of organic compounds. In a preferred embodiment of the method according to the present invention, the biocidal N-halamine polymer is provided in a comminuted form and mixed with super absorbent polymer to provide a treatment composition. The treatment composition is emplaced within an article to provide intimate contact between the composition and a microorganism-containing fluid.
    Type: Application
    Filed: November 13, 2002
    Publication date: July 31, 2003
    Applicant: Auburn University
    Inventors: Shelby D. Worley, Royall M. Broughton, Jeffrey F. Williams
  • Publication number: 20030143109
    Abstract: Disclosed are methods for sterilizing or disinfecting a surface, which comprise applying an electrostatically-charged aerosol of a disinfecting solution onto said surface and allowing said aerosol to remain in contact with said surface for a time sufficient to achieve the desired degree of sterilization or disinfection.
    Type: Application
    Filed: January 31, 2002
    Publication date: July 31, 2003
    Inventors: Darren McKnight, William Felder, Charles Berman
  • Publication number: 20030143111
    Abstract: The invention provides methods of using chlorine dioxide gas for the fumigation of building spaces, heating ventilation and air conditioning systems (HVAC, e.g., return supply ducts, heating and cooling coils and the like), vehicles, office spaces, process equipment, files, documents, mail, mail processing equipment, industrial process equipment and consumer related items under safe conditions.
    Type: Application
    Filed: November 30, 2001
    Publication date: July 31, 2003
    Inventors: Gerald Cowley, John Y. Mason, Sameh F. Eltomi, Darrell L. Dechant
  • Patent number: 6599432
    Abstract: The present invention is directed to disinfecting compositions for dental unit water lines, particularly effective against microbial flora in biofilms which form on the luminal walls of the piping and reservoir components of dental equipment, as well as methods related to the use of such compositions to reduce microbial numbers in water-bearing dental and other equipment and maintain reduced levels on a continuous basis.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: July 29, 2003
    Inventors: Robert D. Kross, William Wade
  • Publication number: 20030138498
    Abstract: The present invention provides a method for carrying out a germicidal process on microbes, which uses hypochlorous acid or the like. More specifically, the present invention provides a sterilizing method in which an aqueous solution comprising (A) hypochlorous acid and/or a salt thereof, (B) a surfactant and (C) a pH adjusting agent is made in contact with microbes.
    Type: Application
    Filed: August 12, 2002
    Publication date: July 24, 2003
    Inventors: Kiyoaki Yoshikawa, Yoshihiro Yamazaki, Tetsuya Okano, Sumitoshi Ito, Shigeru Tamura, Takashi Itoi, Noboru Matsuo, Masao Niki, Shoji Nakane, Shinya Saito
  • Patent number: 6592766
    Abstract: A dispenser apparatus for cantileverly mounting in an off-line condition in an axially component of a water system with the dispenser apparatus carrying a water treatment composition therein that can be released into a water system with one embodiment of the dispenser apparatus including a pair of replaceable containers for holding a water treatment composition with the containers serially located so that the water flowing into one container flows into the second container with the second container removable from the first container so that the second water treatment composition can be replenished without having to replenish the water treatment composition in the first container.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: July 15, 2003
    Inventor: Joseph A. King
  • Publication number: 20030129082
    Abstract: The present invention is a method of decontaminating a structure contaminated by pathogenic microorganisms such as bacillus anthracis and its spores, B. subtilis var niger and its spores, and B. stearothermophilusand its spores, comprising the steps of sealing a contaminated structure sufficiently to enable retention of a gas, introducing methyl bromide gas into sealed contaminated structure to a concentration of methyl bromide in an amount sufficient to deactivate said pathogenic microorganisms and disable germination of pathogenic bacteria spores, and maintaining said sealed contaminated structure with said concentration of methyl bromide at a sufficient temperature for a sufficient period of time, and deactivating said pathogenic microorganisms and disabling germination of said pathogenic bacteria spores associated with said contaminated structure. The method is performed approximately in the range of 20° C. to 40° C.
    Type: Application
    Filed: March 28, 2002
    Publication date: July 10, 2003
    Inventors: Mark J. Weinberg, Rudolf H. Scheffrahn
  • Publication number: 20030113383
    Abstract: A method of eradicating or at least substantially reducing biofilm on a surface in contact with water, or which comes in contact with water, which method comprises introducing into such water a concentrated aqueous biocidal composition formed from bromine chloride and an aqueous solution of an alkali metal salt of sulfamic acid, such composition having an active bromine content of at least about 100,000 ppm (wt/wt), a pH of at least about 7, and an atom ratio of nitrogen to active bromine of greater than 0.93.
    Type: Application
    Filed: October 28, 2002
    Publication date: June 19, 2003
    Inventor: Christopher J. Nalepa
  • Patent number: 6579541
    Abstract: The invention relates to a method and composition for destroying or inhibiting proliferation of microbes using oxidative fluorinator compounds. Fluoride salts that do not dissociate completely in aqueous solutions, such as tri- or tetravalent transition metal fluorides, inert gas fluorides, or tri- or tetravalent rare earth fluorides, are effective antimicrobial agents even at levels up to about 20 ppm, when used alone or in conjunction with a strong oxidizer.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: June 17, 2003
    Assignee: Marantech Holding, LLC
    Inventor: Marvin S. Antelman
  • Publication number: 20030082073
    Abstract: Apparatus and methods are disclosed for decontaminating mail. The preferred embodiment includes a sealable container of sufficient size to hold one or more pieces of mail. A chamber, in gaseous communication with the container, holds a quantity of oxidizer material, and a heater is used to raise the temperature of the oxidizer to form a disinfecting gas that permeates the mail. The oxidizer material is preferably a liquid such as chlorine dioxide or hydrogen peroxide. The apparatus may further include a timer so that the oxidizer is heated for a desired period of time, a pressure relief valve, and/or an indicator responsive to the pressure within the container when sealed.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 1, 2003
    Inventor: Roy J. Mankovitz
  • Publication number: 20030053931
    Abstract: Disclosed are apparatus for delivery of a gas, e.g., carbon dioxide and/or chlorine dioxide, and methods of its use and manufacture. The apparatus includes an envelope, and a sachet within the envelope that contains reactant, which generates a gas in the presence of an initiating agent, e.g., water. The envelope allows release of the gas from the envelope. In another embodiment, the apparatus includes an envelope and a partition that separates two reactants within the envelope. The envelope allows an initiating agent into the envelope and release of the gas generated by the reactants in the presence of the initiating agent.
    Type: Application
    Filed: August 22, 2002
    Publication date: March 20, 2003
    Applicant: Selective Micro Technologies, LLC
    Inventors: Richard A. Hamilton, John J. Warner
  • Publication number: 20030053929
    Abstract: The present invention involves a system and method of treating a porous material of a vehicle wherein the porous material has microorganisms. The method includes providing first and second antimicrobial solutions. The method further includes applying the first antimicrobial solution to the porous material and scrubbing the first antimicrobial solution and the porous material so that the first solution contacts the microorganisms. The method further includes applying the second antimicrobial solution heated at a predetermined temperature to the porous material after a predetermined time upon applying the first solution. The method further comprises removing the first and second antimicrobial solutions and the microorganisms from the porous material.
    Type: Application
    Filed: April 12, 2001
    Publication date: March 20, 2003
    Applicant: Ziebart International Corporation
    Inventor: Thomas R. Walker
  • Patent number: 6534075
    Abstract: An antimicrobial and antiviral composition in powder form or in the form of a two part liquid concentrate for washing and sanitizing foods, food surfaces, food ware, process waters, animal quarters, and animal carcasses is described. The composition may also be used to reduce the microbial and viral population on animals; reducing human pathogenic microbes, reducing opportunistic pathogenic microbes on eggs, and treating skin diseases. The composition includes three reactive species which in solution form an oxidizing species, and optionally a food grade acid source. The reactive species include a natural source of a quaternary or protonizable nitrogen compound which is acceptable on foods, an oxidant and a halide source.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: March 18, 2003
    Assignee: Ecolab Inc.
    Inventors: Robert D. P. Hei, Kim R. Smith, Polly D. Laugen, Bruce R. Cords, Shaun P. Kennedy
  • Patent number: 6533958
    Abstract: A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source. The method is characterized in that the alkali or alkaline earth metal hypochlorite or/and the bromide ion source is/are stabilized by the addition of a stabilizer before the hypobromous acid is formed by the reaction there between.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: March 18, 2003
    Assignee: Acculab Co., Ltd.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Publication number: 20030039580
    Abstract: Disclosed are stable, liquid broad spectrum preservative formulations comprising (a) an antimicrobial halopropynyl compound and (b) a butoxydiglycol solvent, and optionally (c) (i) an alkanol substituted dialkylhdantoin formaldehyde donor, (ii) an antimicrobial isothiazolone derivative, and (iii) a stabilizer. The invention is also directed to methods of use of the preservative formulations for inhibiting or retarding the growth of bacteria or fungi.
    Type: Application
    Filed: February 26, 2002
    Publication date: February 27, 2003
    Applicant: Lonza Inc.
    Inventors: Olga Borokhov, Patrick Jay Lutz, John G. Maroski
  • Publication number: 20030039581
    Abstract: An apparatus for delivering dissolved chlorine dioxide into a water system comprises sources for acid, a chlorite, and a chlorine donor solutions and metering pumps. The solutions are mixed whereby chlorine dioxide is generated, which is then fed into a water system.
    Type: Application
    Filed: September 25, 2002
    Publication date: February 27, 2003
    Inventors: Timothy John Parkinson, Arthur Harris
  • Patent number: 6524624
    Abstract: A two-part disinfecting systems, as well as disinfecting compositions and methods for making and using the same. The two-part disinfecting system contains a first part and a second part adapted to be mixed to yield an aqueous disinfecting composition, wherein the first part comprises a chlorite and the second part comprises an acid and an optional oxidizable colorant, and wherein the first part, the second part, or both the first and second parts comprise an alpha olefin sulfonate.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: February 25, 2003
    Assignee: Alcide Corporation
    Inventors: Joseph Morelli, C. Cayce Warf, Jr., Maura Aldrich, Cecilia Moser Morse, Jean Wiley
  • Patent number: 6518313
    Abstract: Solid sanitizing compositions have advantages over corresponding liquids and powders. A solid sanitizing product can be contained within a plastic bottle with a label indicating that the contents have antimicrobial or deodorizing properties containing a non-flowable solid composition having greater than about 0.02 percent by weight antimicrobial compounds. The preferred solid sanitizing compositions consist essentially of an antimicrobial compound selected from the group consisting of quaternary ammonium salts, fatty amines and diamines, chlorhexidine gluconate, phenol, derivatives of phenol, parachloro metaxylenol and mixtures thereof, and between 0 and 99.98 percent by weight of a cleaning composition. The solid sanitizing compositions can be effectively used with solid dispensers. The solid dispensers have a bowl with a drain at the bottom and an upward pointing spray nozzle.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: February 11, 2003
    Assignee: Sunburst Chemicals, Inc.
    Inventor: William H. Scepanski
  • Patent number: 6517730
    Abstract: Apparatus is described for sanitizing a flow of water recirculated from a body of water such as a swimming pool by a pump (16) having an inlet conduit (10) and an outlet conduit (18) both in fluid communication with the body of water. The apparatus comprises a container (22) which is adapted to hold sources of silver and copper metal and halogen reagent which, under the action of oxidising agents forms colloidal dissolved metals. Metering means (12) is adapted to deliver hydrogen peroxide reagent into the inlet conduit (10). Water is pumped from outlet conduit (18) through feed conduit (20) which is connected to the container (22) and then through return conduit (24) which connects to either inlet conduit (10) or the outlet conduit (18) to a position upstream of the connection of the feed conduit (10) to the outlet conduit (18). The amount of hydrogen peroxide and halogen added are predetermined by the volume of water to be sanitized.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: February 11, 2003
    Assignee: Aquagem Holdings Pty Limited
    Inventor: Hans Rex
  • Patent number: 6514458
    Abstract: Method for removing microbial biofilm from surfaces in contact with an aqueous system is disclosed, which comprises adding to the system a treatment comprising low foaming, ethoxylated anionic surfactant composed of alkyl substituted carboxylated acid or salt thereof and polyoxyethylene-polyoxypropylene block copolymer.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: February 4, 2003
    Assignee: GE Betz, Inc.
    Inventors: Melvin H. Czechowski, Wilson K. Whitekettle
  • Publication number: 20030012685
    Abstract: The invention relates to synergistic mixtures of o-phenylphenol and additional bactericides.
    Type: Application
    Filed: August 23, 2002
    Publication date: January 16, 2003
    Inventors: Peter Wachtler, Martin Kugler
  • Patent number: 6506737
    Abstract: An oxidizing species is described herein as a reaction product through an in situ preparation combining a protonizable phosphorus or sulfur compound, and a halide source at controlled proportions in an aqueous, non-aqueous, gel, aerosol, solid-phase or powdered media. The oxidizing species can be used to reduce microbial and viral populations on a surface or object or in a body or stream of water. The invention thus finds applications as a bleach, sanitizer, oxidant, or in any other application in which an oxidizing agent can be beneficially used alone or in a formulation.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: January 14, 2003
    Assignee: Ecolab, Inc.
    Inventors: Robert D. P. Hei, Kim Smith
  • Publication number: 20030003015
    Abstract: The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric acid, sulfuric acid, hydrogen peroxide, chlorine, sulfur dioxide, or methanol. By eliminating the use of toxic and/or hazardous compounds, the present invention provides a safer means for generating and using chlorine dioxide in a wider variety of applications than previously possible. For instance, the present invention can easily be adapted for the treatment of combustion exhaust gases, flue gases, cooling towers, chilled water systems, contaminated groundwater, and agricultural produce or products.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 2, 2003
    Inventors: L. Fred Roensch, Richard H. Tribble, Dick Hilliard
  • Publication number: 20030004216
    Abstract: A disinfectant composition containing more than 0.05% and less than 9.4% by volume of dimethyl benzyl lauryl ammonium bromide, substantially pure, substantially de-ionized, substantially bacteria free water if the pH of the water is between 5.0 and 6.8, a first stabilizer structured to adjust a pH level of the disinfectant composition to approximately 7, ammonium sulfate structured to increase a strength of the composition and a stabilizer structured to lower the pH level of the disinfectant composition back to approximately 7.
    Type: Application
    Filed: August 26, 2002
    Publication date: January 2, 2003
    Inventor: Bernardo Birnbaum
  • Publication number: 20030003013
    Abstract: The present invention relates to a disinfecting composition comprising a first component as peracetic ion precursor, and a second component as source of peroxide. The invention also relates to a method for disinfecting and/or sterilising the water line of a dental unit. The method comprises the steps of: preparing an aqueous solution comprising peracetic ions as active agent; introducing in the water line of the dental unit a portion of the aqueous solution comprising the peracetic ions; allowing the portion of aqueous solution comprising the peracetic ions to act; and flushing the water line with an aqueous rinsing solution.
    Type: Application
    Filed: May 30, 2002
    Publication date: January 2, 2003
    Applicant: CASTELLINI S.p.A.
    Inventor: Franco Castellini
  • Publication number: 20020197183
    Abstract: A method by which dental equipment, such as dental scalers, can be sanitized using a detergent or treating composition containing a surfactant and a solvent such as water is disclosed. The method involves taking the used dental equipment and contacting it with the treating composition, and subjecting both the equipment and composition to microwaves. The composition foams during microwaving and/or immerses the equipment such that microwave arcing is avoided, and such that the dental equipment is sanitized.
    Type: Application
    Filed: July 9, 2002
    Publication date: December 26, 2002
    Inventors: Alan Scott Goldstein, Howard David Hutton
  • Publication number: 20020192110
    Abstract: There is disclosed a sterilizing fog, characterized by droplet size range, vapor density range, sterilant concentration range and sterilant concentration within the droplets. Specifically, there is disclosed a fog achieved by an apparatus combining pressure, temperature and acoustics to form a super-charged ozoneated water and an apparatus that creates small micro droplets which form a highly concentrated sterilizing fog. Specific sterilants used are ozone, chlorine and chlorous acid generating compositions such as sodium hypochlorite, or combinations thereof.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 19, 2002
    Inventor: Todd Garlick
  • Publication number: 20020182106
    Abstract: The present invention is directed to a method and apparatus for treating goods, such as, for example, fumigating and re-cooling perishable goods, such as fruit, using a tarp and floor seal. The apparatus encloses goods on a surface and includes a canopy that is substantially impermeable to flowable materials, such as gas, liquid, or a combination thereof; an upper perimeter for supporting an upper portion of the canopy; a lower perimeter for supporting a lower portion of the canopy, the lower perimeter to be placed in proximity to the surface; a support structure for supporting the upper perimeter and lower perimeters; and a gasket in communication with the lower perimeter, wherein the gasket is deformable to substantially seal the chamber by compressing the gasket against the surface. The apparatus may also include an intermediate support structure for providing support to the canopy and a conduit in communication with the chamber to supply cool air to the chamber.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Inventors: Roy Richardson, John Achzet, Robert Dickinson, James Rushing
  • Publication number: 20020172614
    Abstract: The general purpose of this invention is to provide an improved apparatus and method of preserving the vulnerable area of a railroad cross tie near the interface of the tie and the tie plate. To attain this purpose the invention provides a thin preservative-bearing gelatinous material that is placed between the cross tie and the tie plate either at the time of the original laying of rail or during any subsequent relaying. No extra equipment is needed and only a negligible amount of labor is required to simply place the gelatinous material on the adzed surface of the cross tie prior to the mounting or remounting of the rail. The presence of the gelatinous material poses absolutely no resistance to the subsequent driving of the spikes into the tie and is thin enough so as not to pose any rail alignment problems. The use of the gelatinous material relies on the moisture found under the tie plate to leach the active ingredients out of the material and help diffuse them throughout the adjacent section of wood.
    Type: Application
    Filed: March 27, 2001
    Publication date: November 21, 2002
    Inventors: David J. Ostby, Michael J. Maloney
  • Patent number: 6478972
    Abstract: A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source. The method is characterized in that the alkali or alkaline earth metal hypochlorite or/and the bromide ion source is/are stabilized by the addition of a stabilizer before the hypobromous acid is formed by the reaction there between.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: November 12, 2002
    Assignee: Acculab Co., Ltd.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Publication number: 20020164266
    Abstract: The invention relates to synergistic mixtures of methyl-2H-isothiazol-3-one and 2-bromo-2-nitropropanediol for controlling microorganisms in industrial materials.
    Type: Application
    Filed: March 13, 2002
    Publication date: November 7, 2002
    Inventors: Peter Wachtler, Martin Kugler
  • Patent number: 6462088
    Abstract: Liquid germicidal formulation containing, as the active ingredients, a combination of an alcohol and an organic N-chloroamine, which combination shows a high bactericidal activity and an unexpected stability in time, while maintaining its effectiveness substantially unchanged even after a prolonged storage. The formulation comprises, in water, chloramine-T or chloramine-B and one or more, aliphatic alcohols having up to 12 carbon atoms, preferably isopropanol, said solution having a pH not lower than 8.5.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: October 8, 2002
    Assignee: Eurospital S.p.A.
    Inventors: Antonello Russo, Hana Dannan
  • Patent number: 6451253
    Abstract: High concentration chlorine dioxide gel compositions are prepared for disinfectant, deodorizing and for like uses. The preferred gel compositions are prepared from xanthan, guar or like gums.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: September 17, 2002
    Assignee: Vulcan Chemical Technologies, Inc.
    Inventors: Anthony R. Pitochelli, Jennifer R. Miller
  • Patent number: 6447722
    Abstract: The present invention relates generally to novel water treatment compositions and methods of preparation and use. More particularly, the invention relates to solid water treatment compositions containing at least one halogen source and at least one amine compound. Methods of preparing solid water treatment compositions and methods for controlling biofouling, disinfecting, cleaning and water systems are also provided.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 10, 2002
    Assignee: Stellar Technology Company
    Inventor: Lawrence F. Rakestraw
  • Patent number: 6440744
    Abstract: A sterilization monitor includes a substrate and an monitor composition. The monitor composition contains a colorant and a halogen source and undergoes a distinct color change when exposed to a peracid. The sterilization monitor can be used to monitor a sterilization process involving a peracid. A sterilization monitoring device, including a sterilization monitor enclosed in a housing having a vapor permeable barrier, can also be used to monitor a sterilization process.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: August 27, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Ramon T. Ignacio, Allan P. Piechowski
  • Patent number: 6440365
    Abstract: A method of treating a building contaminated with Stachybotris includes inspecting the building to identify locations in the building contaminated by the Stachybotris, applying a treatment liquid to the Stachybotris at the locations, the treatment liquid including hydrochloric acid, and heating the treatment liquid for a length of time after it has been applied to the Stachybotris.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: August 27, 2002
    Inventors: Larry J. Poye, Stan S. Buchanan
  • Patent number: 6440366
    Abstract: The present invention is directed to new and improved solutions for packaging contact lenses and to methods for treating contact lenses with such solutions to improve the comfort of the lenses during wear. In particular, the present invention is directed to packing solutions comprising certain non-ionic surfactants containing a poly(oxyalkylene) copolymer and having a molecular weight of 4000 to 30,000. Such surfactants are retained on the surface of an unused lens for extended periods of time, resulting in surface modification that persists in the eye, thereby providing significant improvement in the wetting properties of fresh contact lenses used for the first time and, moreover, even several hours after lens insertion, preventing dryness and improving lubricity.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: August 27, 2002
    Assignee: Bausch & Lomb Incorporated
    Inventors: Anil Salpekar, Stephen Ronald Tonge
  • Patent number: 6436445
    Abstract: An oxidizing species is described herein as a reaction product through an in situ preparation combining a quaternary or protonizable nitrogen compound, an oxidant compound and a halide source at controlled proportions in an aqueous, non-aqueous, gel, aerosol, solid-phase or powdered media. The oxidizing species can be used to reduce microbial and viral populations on a surface or object or in a body or stream of water. The invention thus finds applications as a bleach, sanitizer, oxidant, or in any other application in which an oxidizing agent can be beneficially used alone or in a formulation.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: August 20, 2002
    Assignee: Ecolab Inc.
    Inventors: Robert D. P. Hei, Kim R. Smith, Polly D. Laugen, Shaun P. Kennedy
  • Patent number: 6436345
    Abstract: The present invention provides a new method for the in situ generation of chlorine dioxide from a solution of sodium chlorite and carbon dioxide. The present invention produces effective levels of chlorine dioxide without having to resort to the use of hydrochloric acid, sulfuric acid, hydrogen peroxide, chlorine, sulfur dioxide, or methanol. By eliminating the use of toxic and/or hazardous compounds, the present invention provides a safer means for generating and using chlorine dioxide in a wider variety of applications than previously possible. For instance, the present invention can easily be adapted for the treatment of combustion exhaust gases, flue gases, cooling towers, chilled water systems, contaminated groundwater, and agricultural produce or products.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: August 20, 2002
    Assignee: ChemTreat, Inc.
    Inventors: L. Fred Roensch, Richard H. Tribble, Dick Hilliard
  • Patent number: 6436344
    Abstract: The present invention introduces a class of compounds, 2-substituted carbonyl compounds, that are useful as disinfecting agents, and particularly useful in methods for the disinfection of biological fluids. Members of the class of compounds have been found to possess pathogen inactivating properties against a variety of pathogens. The compounds and methods disclosed herein are useful for disinfecting biological fluids such as blood and blood fractions, among others.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: August 20, 2002
    Assignees: American National Red Cross, Amersham Pharmacia Biotech AB
    Inventors: Shirley I. Miekka, William H. Drohan, Herbert Baumann, Ingrid Drevin, Jean-Luc Maloisel
  • Patent number: 6423267
    Abstract: 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 at least one bromine or halogen stabilizer. The resulting products are a mixture of stable oxidizing bromine compounds that can be used as a biocide in an industrial water system.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: July 23, 2002
    Assignee: Nalco Chemical Company
    Inventors: Shunong Yang, William F. McCoy, Anthony W. Dallmier
  • Patent number: 6419879
    Abstract: 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 alkyltrimethylenediamine, tetra-alkyl phosphonium chloride, 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid and 4,5-dichloro-2-n-octyl-4-isothiazoline-3-one.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: July 16, 2002
    Assignee: Nalco Chemical Company
    Inventors: Andrew J. Cooper, Anthony W. Dallmier, Robert F. Kelly, William F. McCoy, Xi Ma
  • Patent number: 6417423
    Abstract: Compositions and methods for destroying biological agents and toxins such as Aflatoxins, Botulinum toxins, and Clostridium perfrigens toxins are provided wherein the substance to be destroyed is contacted with a finely divided metal oxide nanocrystals. In various embodiments, the metal oxide nanocrystals have reactive atoms stabilized on their surfaces, species adsorbed on their surfaces, or are coated with a second metal oxide. The desired metal oxide nanocrystals can be pressed into pellets for use when a powder is not feasible. The methods of the invention are safe for humans, equipment, and the environment, and provide for decontamination of warfare sites, of equipment exposed to the contaminant, and of soil, water and air having been exposed to the contaminant. Preferred metal oxides for the methods include MgO, CaO, TiO2, ZrO2, FeO, V2O5, Mn2O3, Fe2O3, NiO, CuO, Al2O3, ZnO and mixtures thereof.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: July 9, 2002
    Assignee: Nanoscale Materials, Inc.
    Inventors: Olga Koper, Kenneth J. Klabunde, John S. Klabunde
  • Publication number: 20020086903
    Abstract: A synergistic biocidal oxidant, useful as a sanitizer and disinfectant, is disclosed. The synergistic biocidal oxidant comprises a lower organic peracid, preferably peracetic acid, and chlorine dioxide.
    Type: Application
    Filed: December 21, 2000
    Publication date: July 4, 2002
    Inventors: Charles J. Giambrone, George M. Diken
  • Patent number: 6410060
    Abstract: This invention relates to the method of non-invasively fortifying eggs with iodine as a dietary supplement without compromising the structural integrity of the egg. The eggs are placed in a solution comprising iodide or iodate salts of alkali or alkali earth metals at an effective concentration for a duration of between a few seconds to a few days. Iodine then passes through the egg shell to the interior of the egg until an adequate internal iodine concentration of iodide or iodate salts is produced.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: June 25, 2002
    Assignee: Biophile Corporation
    Inventors: Pichit Suvanprakorn, Lerson Tanasugarn, Anusig Limahksohn, Sangsom Sinawat, Prakrom Vuthipongse