Using Halogen Or Halogen-containing Compound Patents (Class 422/37)
  • Patent number: 6403027
    Abstract: A method for fumigation perishables within an existing refrigerated cargo container that does not require the refrigerated cargo container to be tented. The method uses the inherent characteristics of the cargo container to form the fumigation chamber environment. The method insures that the cargo container is fit for fumigation purposes, more specifically, that the refrigerated cargo container does not allow the escape of fumigant beyond the reasonable level allowed by the agency monitoring the fumigation process.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: June 11, 2002
    Inventors: Alexander Elias Napoles, Alexander Alfred Napoles
  • Patent number: 6399039
    Abstract: Chlorine dioxide is generated from an aqueous solution of sodium chlorite in the presence of a catalyst having a reduced rate of deactivation. The catalyst is preferably palladium, or palladium together with another platinum group metal (e.g., Pd+Pt), or palladium together with a Group IB metal (e.g., Pd+Au) deposited on a support modified by Group IA carbonate salt (e.g., K2CO3) or a Group IIA carbonate salt (e.g., CaCO3) or a magnesium salt that can be converted to MgO or a support consisting of a Group IA carbonate salt or a Group IIA carbonate salt or a magnesium salt that can be converted to MgO.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: June 4, 2002
    Assignee: Degussa Corporation
    Inventor: Daniel Ostgard
  • Patent number: 6395697
    Abstract: Aqueous concentrated liquid disinfectant compositions which include: an antiseptic compound other than a quaternary ammonium compound having germicidal properties; organic solvent constituent; binary co-solvent system comprising alkyl biphenyl solvent and a co-solvent; optionally but desirably at least one optional constituents. The concentrate compositions feature excellent blooming characteristics.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: May 28, 2002
    Assignee: Reckitt Benckiser Inc.
    Inventors: Tak Wai Cheung, Dennis Thomas Smialowicz
  • Publication number: 20020058006
    Abstract: A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydroxide, or calcium chloride) with excess protons, or activating an aqueous solution of metal chlorite and such a water-retaining substance with excess protons. Proton generating species useful for the activation are acids such as acetic, phosphoric, and citric acid, and metal salts such as ferric chloride, ferric sulfate, ZnSO4, ZnCl2, CoSO4, CoCl2, MnSO4, MnCl2, CuSO4, CuCl2, and MgSO4. The activation can be performed by causing fluid to flow through a bed of zeolite crystals impregnated with calcium chloride (or other water-retaining substance) and sodium chlorite, and a bed of zeolite crystals impregnated with a proton generating species. The two beds can be physically mixed together or the fluid can flow sequentially through separate beds.
    Type: Application
    Filed: January 11, 2002
    Publication date: May 16, 2002
    Inventor: Fred Klatte
  • Patent number: 6383541
    Abstract: The present invention provides a method for the disinfection of seafood. The inventive method includes the steps of (a) preparing a concentrated aqueous solution of a chlorine dioxide liberating compound having a concentration of from about 0.2% to about 25% by weight of the chlorine dioxide liberating compound and having an amount of an acid sufficient to adjust the pH to from about 1.0 to about 5.0; (b) diluting the concentrated aqueous solution to provide a dilute, acidified solution having a concentration of from about 0.00017% to about 0.17% by weight of the chlorine dioxide liberating compound; and (c)contacting the dilute, acidified solution with seafood to disinfect the seafood. Preferably, the chlorine dioxide liberating compound is an alkali metal chlorites, with sodium chlorite and potassium chlorite being particularly preferred. The acid may be any acid generally regarded as safe, as that term is used in the Code of Federal Register, 21 CFR 170.35 and 21 CFR 170.30.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: May 7, 2002
    Assignee: Bio-Cide International, Inc.
    Inventors: Bobby C. Danner, Paul Reeves, Neeraj Khanna
  • Publication number: 20020041824
    Abstract: An apparatus and method for providing a contact surface which is continuously sanitized with a sanitizing fluid. A reservoir contains the sanitizing fluid. A contact material has a porous contact surface in fluid communication with the reservoir. A moisture control and fluid distribution system determines the moisture level of the porous surface and, upon determining that the moisture level thereof has reached a predetermined level, causes a flow of the sanitizing fluid from the reservoir to the contact material. The contact material comprises a durable, porous outer layer configured for evenly distributing the sanitizing fluid to the contact surface and a backing layer bonded to the outer layer to provide a seal there between.
    Type: Application
    Filed: October 9, 2001
    Publication date: April 11, 2002
    Inventors: Paul Wesley Dawson, Scott Hugh Shanks
  • Patent number: 6368637
    Abstract: A process for treating active viral lesions, such as herpes lesions and warts, on persons or animals, in which an active lesion containing a virus is scrubbed or debrided, an aqueous reagent solution containing neutral red and free chlorine is applied to the scrubbed lesion, and the lesion to which the reagent has been applied is exposed to ultraviolet light for a period sufficient to cause viral destruction. The invention further relates to the aqueous reagent solution containing neutral red and free chlorine.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: April 9, 2002
    Assignee: Cross Bay LLC
    Inventor: Jon Stoneburner
  • Publication number: 20020034455
    Abstract: An aqueous stable foam, suitable for use as a vaginal or hemorrhoidal wipe agent, containing at least one surfactant and at least one foam stabilizing agent can be dispensed to bathroom tissue or the like for application to the vaginal or anal area.
    Type: Application
    Filed: June 20, 2001
    Publication date: March 21, 2002
    Inventor: Herbert Lapidus
  • Patent number: 6358425
    Abstract: A pool apparatus that simultaneously removes debris from the water and purifies water in a portion of the water passing through the pool apparatus with the pool apparatus having an intake head for drawing water and debris from a first region of the pool and directing the water and debris to a housing having a restrictor therein for directing a portion of the water through a water purification material and the remaining portion with the debris therein along an unimpeded path in the housing to a collector where the debris is collected and the water is returned to the pool.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: March 19, 2002
    Inventor: Joseph A. King
  • Publication number: 20020018731
    Abstract: The connection, assembly, or fill of two or more pre-sterilized components having at least one terminal end each for attachment to another component, and an apparatus for performing such a connection, while maintaining the sterility of the components is disclosed. The resulting connection is made permanent by bonding the contacting components together using either a solvent bonding technique, a radio frequency sealer, a heat sealer, or any other suitable process. The connection is preferably made within an active sterile field. Using a low-voltage electron beam instrument, such as the MIN-EB™, a suitable sterile field sphere can be created. The terminal ends of the multiple components remain within the sterile field sphere until the possibility of contamination within the sealed components is significantly reduced to industry acceptable standards.
    Type: Application
    Filed: October 4, 2001
    Publication date: February 14, 2002
    Inventors: Arnold C. Bilstad, Bradley H. Buchanan, Alan W. Martilla, Archie Woodworth
  • Publication number: 20020006353
    Abstract: The connection, assembly, or fill of two or more pre-sterilized components having at least one terminal end each for attachment to another component, and an apparatus for performing such a connection, while maintaining the sterility of the components is disclosed. The resulting connection is made permanent by bonding the contacting components together using either a solvent bonding technique, a radio frequency sealer, a heat sealer, or any other suitable process. The connection is preferably made within an active sterile field. Using a low-voltage electron beam instrument, such as the MIN-EB™, a suitable sterile field sphere can be created. The terminal ends of the multiple components remain within the sterile field sphere until the possibility of contamination within the sealed components is significantly reduced to industry acceptable standards.
    Type: Application
    Filed: April 20, 1999
    Publication date: January 17, 2002
    Inventors: ARNOLD C. BILSTAD, BRADLEY H. BUCHANAN, ALAN W. MARTTILA, ARCHIE WOODWORTH
  • Patent number: 6333054
    Abstract: A thixotropic, non-cytotoxic, topical hydrogel that contains a proven safe and effective, broad spectrum, antimicrobial agent based on a unique electrolytically derived sodium hypochlorite solution.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: December 25, 2001
    Assignee: Amuchina S.p.A.
    Inventor: Wallace Rogozinski
  • Patent number: 6328900
    Abstract: A kit for converting a water circulation system in a hot tub into a water purification system including a housing that can be fixedly mounted to a spa or hot tub, a chamber in the housing, an inlet for splicing into the spa water circulation system, and an outlet for splicing into the spa water circulation system, a dispenser for mounting in the chamber in the housing with the dispenser containing water purification materials so that when water flows through the spa water circulation system the water also flows through the chamber with the water purification material to simultaneously purifies the water and direct jets of water into the hot tub.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: December 11, 2001
    Inventor: Joseph A. King
  • Patent number: 6328929
    Abstract: A method of delivering disinfectant in an absorbent substrate. A first step involves intermixing a first reactant chemical with a first ink. A second step involves intermixing a second reactant chemical with a second ink. A third step involves printing a first pattern on an absorbent substrate with the first ink. A fourth step involves printing a second pattern on the absorbent substrate with the second ink. The second pattern is positioned in close proximity to the first pattern, such that when the first pattern and second pattern are exposed to water an intermixing of the first reactant chemical and the second reactant chemical occurs to produce an aerosol disinfectant.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: December 11, 2001
    Inventor: Kenneth Reay Code
  • Patent number: 6328909
    Abstract: A frozen chlorine dioxide-containing composition comprising a metal chlorite and a protic acid in a frozen aqueous matrix made by freezing a substantially chloride dioxide-free aqueous solution comprising a metal chlorite at a concentration ranging from about 0.0005% to about 0.5% by weight and a protic acid at a concentration sufficient to lower the pH of the aqueous solution to a value of about 1.8 to about 5.0. The frozen chlorine dioxide-containing composition has a chlorine dioxide concentration of more than about 3 ppm, while the aqueous solution prior to freezing has a chlorine dioxide concentration less than about 3 ppm. The frozen chlorine dioxide-containing composition is used to disinfect substrates by contacting the same with the frozen chlorine dioxide-containing composition. Suitable substrates include food intended for human or animal consumption, such as meat, fish and poultry.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: December 11, 2001
    Assignee: Alcide Corporation
    Inventors: Robert D. Kross, G. Kere Kemp
  • Publication number: 20010048916
    Abstract: The present invention provides a sustained-releasing anti-protista preparation, comprising using a water-insoluble or difficulty water soluble and water-wettable polymer compound which is solid at room temperature as a sustained-releasing substrate material, a method for a preparation of the sustained-releasing anti-protista preparation, comprising kneading a water-insoluble or difficulty water soluble and water-wettable polymer compound which is solid at room temperature with an anti-protista substance, and a sustained-releasing anti-protista preparation for a waterway, comprising using a water-insoluble or difficulty water soluble and water-wettable polymer compound which is solid at room temperature as a sustained-releasing substrate material.
    Type: Application
    Filed: April 23, 2001
    Publication date: December 6, 2001
    Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD
    Inventors: Hiroyuki Kato, Tadayoshi Yazaki, Tokihiko Maruyama
  • Patent number: 6325969
    Abstract: The present invention provides a porous paper product impregnated with at least one chemical species. The porous paper product can be in the form of sheets, or compressed pellets. The porous paper can be prepared from a variety of sources, including wood pulp, kenaf, flax, or hemp. The chemical species impregnating the paper react and/or diffuse out of the paper to accomplish a variety of desired results. For example, diffusion of a volatile biocidal chemical out of pores in the paper create a no-growth zone on and immediately surrounding the impregnated paper. In this manner the impregnated paper can provide a sterile environment for activities such as food packaging/storage, the treatment of illness/injury, or waste disposal.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: December 4, 2001
    Inventors: James Aamodt, John Colvin
  • Patent number: 6325970
    Abstract: A method comprises feeding a chlorite, a chlorine donor, and an acid into a water line connected to a water system through which water is flowing, or a mixing chamber connected to a water system, wherein the chlorite and chlorine donor being present in a molar ratio from 1.0:0.1 to 1.0:15.0 chlorite to chlorine donor; whereby chlorine dioxide is generated substantially instantaneously in solution and substantially no undissolved chlorine dioxide gas is evolved; and feeding the solution comprising chlorine dioxide into the water system. The solution comprising chlorine dioxide in the mixing chamber can have a chlorine dioxide concentration from 20,000 to 50,000 ppm.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: December 4, 2001
    Assignee: BTG Inter-Corporate Licensing Limited
    Inventors: Timothy John Parkinson, Arthur Ty Harris
  • Patent number: 6322749
    Abstract: 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.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: November 27, 2001
    Assignee: Nalco Chemical Company
    Inventors: Robert E. McCarthy, Anthony W. Dallmier, William F. McCoy
  • Publication number: 20010038805
    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: Application
    Filed: February 16, 2001
    Publication date: November 8, 2001
    Inventors: Richard Hamilton, John Warner
  • Patent number: 6287473
    Abstract: 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—NH2, R—NH—R1, R—SO2—NH2, R—SO2—NHR1, R—CO—NH2, R—CO—NH—R1 and R—CO—NH—CO—R1 wherein R is a hydroxy group, an alkyl group or an aromatic group and R1 is an alkyl group or an aromatic group, adding bromine chloride to the solution while mixing the solution, and cooling the solution.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: September 11, 2001
    Assignee: Nalco Chemical Company
    Inventors: Shunong Yang, William F. McCoy, Anthony W. Dallmier
  • Patent number: 6279261
    Abstract: In a process for thermal pest control, a fuel-operated heater with separate flue gas routing is used to heat up a space to be treated. Fumigants may be additionally introduced into the air of the space to be treated, especially if the combustion chamber 13 of the heater is separated from the heat exchanger chamber 8 of the heater in a gas-tight manner. The process is particularly suitable for disinfecting mills and food-processing plants.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: August 28, 2001
    Assignee: Binker Materialschutz GmbH
    Inventors: Gerhard Binker, Joachim Binker
  • Patent number: 6277414
    Abstract: The present invention relates to an aqueous decontaminating composition comprising (A) an amount of H2O2 less than or equal to 60% by weight, based on the total weight of said composition; (B) an RCO3H/RCO2H mixture, where R is methyl or ethyl, as indicated above, said mixture being present in an amount such that the weight ratio of said mixture to the hydrogen peroxide is between 0.15/1 and 0.85/1; (C) a silver component as a source of Ag ions, selected from the group consisting of silver salts and complexes, said silver component being present in an amount such that the weight ratio of said silver component to the hydrogen peroxide is between 0.0005/1 and 0.015/1; (D) a stabilizer present in an amount such that the weight ratio of said stabilizer to the hydrogen peroxide is between 0.0005/1 and 0.025/1; and water to make up to 100% by weight. It further relates to the method of preparation and to the use of said composition.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: August 21, 2001
    Assignee: Sodifra
    Inventors: Alain Elhaik, Raphaël Alex De Nicola
  • Patent number: 6277328
    Abstract: Methods of aseptically transporting a bulk quantity of a sterile product such as an edible food product comprise sterilizing a transporting container by flooding the container with a chemical sterilant, pressurizing the sterilized container with a positive pressure inert gas atmosphere, and aseptically supplying a bulk quantity of the sterile product to the sterilized container. The pressurized container supplied with the sterile product is sealed to substantially maintain the positive pressure during transport of the container, and the container with the sterile product therein is then transported to a remote location. A transporting container for use in the present methods comprises an insulated transportable storage tank provided with a sealable atmospheric vent on an upper portion thereof, an inert gas valve provided with a microbial filter, and an aseptic inlet/outlet valve for supplying a sterile product therethrough.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: August 21, 2001
    Assignee: Enerfab, Inc.
    Inventors: Jeffrey B. Raasch, Charles E. Smith
  • Patent number: 6270722
    Abstract: 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.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: August 7, 2001
    Assignee: Nalco Chemical Company
    Inventors: Shunong Yang, William F. McCoy, Eric J. Allain, Eric R. Myers, Anthony W. Dallmier
  • Patent number: 6262091
    Abstract: Compositions for controlling harmful fungi, containing in a solid or liquid carrier a) at least one p-hydroxyaniline derivative of the formula I b) at least one amide compound of the formula II A—CO—NR8—R9  (II) where the substituents have the meanings indicated in the description; and methods of controlling harmful fungi using compositions of this type are described.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: July 17, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Oliver Wagner, Karl Eicken, Eberhard Ammermann, Gisela Lorenz, Siegfried Strathmann, Harald Köhle, Günter Retzlaff
  • Patent number: 6262097
    Abstract: This invention relates to the synergistic wood preservative composition comprising of a quaternary ammonium compound and N-substituted isothiasolones having the properties of providing effective and broader control of microorganisms that produce stain, can cause the deterioration of wood, or may develop resistance to some of the active components.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: July 17, 2001
    Inventor: Snezana Kovacevic
  • Patent number: 6258591
    Abstract: The present invention provides a combined formulation for disinfecting, neutralizing and cleaning a soft contact lens and a method using the same easily, efficiently and safely. The formulation is a one-solution type of combined formulation for disinfecting, neutralizing and cleaning a soft contact lens, which includes a first formulation that contains an iodine-based disinfectant and a proteolytic enzyme and a second formulation that contains a reducing and a foaming agent treated with a delayed release coating, and which contains a nonionic surfactant in at least one of the first and second formulations. A stained soft contact lens can be disinfected, neutralized and cleaned easily by holding it in an aqueous solution colored yellow or brown by iodine molecules and removing it from the aqueous solution after the solution becomes almost colorless.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: July 10, 2001
    Assignee: Ophtecs Corporation
    Inventors: Toyoaki Yoneda, Takashi Fujii, Mika Morita, Takeshi Ohnuma, Hiroshi Tanouchi, Shigeru Nakamura
  • Patent number: 6254824
    Abstract: A method for controlling the spread of the parasitic microorganism, Myxobolus cerebralis. The method involves the application of a solution containing a quaternary ammonium compound onto articles carrying Myxobolus cerebralis in order to the destroy the microorganism.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: July 3, 2001
    Assignee: Scott Fly Rod Company
    Inventor: James A. Bartschi
  • Patent number: 6228272
    Abstract: Described is a method and device for servicing the water of a swimming pool 1 by adding a disinfectant. The disinfectant is added by circulating the water through a branched circuit of the pool using a constant flow stirring pump 5. The operation of the pump is determined by the temperature of the water detected by temperature sensor 30 located within the branched circuit. The operating time of the pump is determined according to preset programs of a control box 3 which divide the operating time into time slot units of similar duration spread over several time ranges. The disinfectant addition can be carried out by pebble support 64 or by electrolysis within the branch circuit. Also, if the temperature drops below a minimal freeze risk value or above a maximal value, the pump is continuously operated and a warning is generated.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: May 8, 2001
    Inventor: André Gola
  • Patent number: 6207109
    Abstract: The invention is directed to sterilant gas compositions of pentafluorodimethyl ether and ethylene oxide which possess improved environmental properties.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: March 27, 2001
    Assignee: AlliedSignal Inc.
    Inventors: Robert Richard, James Batt, Barbara Decaire, Ian Shankland
  • Patent number: 6207201
    Abstract: A first embodiment of the present invention is directed to an aqueous disinfectant solution comprising an alkali metal or alkaline earth metal hypochlorite, an amount of base sufficient to raise the pH of the solution to at least 12, and water. A second embodiment of the present invention is directed to a method for sterilizing medical and dental instruments and hard surfaces which comprises contacting the medical or dental instruments or hard surfaces with an aqueous disinfecting solution comprising an alkali metal or alkaline earth metal hypochlorite, an amount of a base sufficient to raise the pH of the solution to at least 12, and water, for a time sufficient to disinfect the medical or dental instruments or hard surface.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: March 27, 2001
    Assignee: Amuchina International, Inc.
    Inventor: Giuseppe Piacenza
  • Patent number: 6203484
    Abstract: The invention provided relates to the use of polyvinylpyrrolidone-iodine complexes in combination with gelling agents to produce strong disinfectants which not only physically stabilize biohazardous and infectious wastes but also kill pathogens contained in the wastes. The gelling agents include polyacyrlates that are superabsorbents.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: March 20, 2001
    Assignee: BASF Corporation
    Inventors: Anthony Lepore, Siegfried Lang
  • Patent number: 6193931
    Abstract: A sterilization system using a sterilization process monitoring device which is capable of indicating the efficacy of the sterilization process in an enclosed sterilization container while still maintaining the sealed state of the sterilization container. The process monitoring device comprises at least one biological indicator and/or at least one chemical indicator. Upon completion of the sterilization cycle, the process monitoring device can be advantageously removed from the system to determine chemical and/or biological efficacy of the sterilization process. The removal of the biological and/or chemical indicators does not disturb the sterilized state of the articles inside the sterilization container.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: February 27, 2001
    Assignee: Ethicon, Inc.
    Inventors: Szu-Min Lin, Paul Taylor Jacobs
  • Patent number: 6183646
    Abstract: The invention relates to the reduction and prevention of biofouling in facilities utilizing water, e.g. sea water, carrying biological organisms, without causing corrosion, chemical reaction or other detrimental action from the additive or environmental discharge problems. Such operations include, for example, desalination plants, power plants, oilfield water injection facilities and shipboard or ocean platform fire water systems. For example, in the desalination plant of FIG. 1, the biofouling reduction method and apparatus for this invention have a source of oxidizing agent such as chlorine ions or ozone, a source of copper ions and a dosing chamber for delivery of relatively low dosage levels of oxidizing agents and at appropriate times copper ions to form a treatment additive. Flow connectors connect the dosing chamber to various points along the piping in the desalination plant.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: February 6, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Edward Emyr Williams, Peter William Nickson, Brent Roland Knox-Holmes, Robert Wainwright
  • Patent number: 6180070
    Abstract: An system for treatment of infectious waste including a impactor coupled to a mixing drum that can be pressurized, infectious waste and a treatment fluid comprising a substance effective in killing pathogenic organisms being introduced directly into the impactor where the waste is pulverized forming unrecognizable particulate matter mixed with fluid, and the waste from there being introduced into the drum for mixing and subsequently pressure treatment by providing a superatmospheric pressure in the drum to drive chemicals effective in killing pathogenic organisms into voids in the solids and also into spore walls and cell membranes to provide a more speedy and effective kill.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: January 30, 2001
    Assignee: Lofta Hammer Holdings LTD
    Inventor: W. Lynn Benson
  • Patent number: 6174508
    Abstract: A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydroxide, or calcium chloride) with excess protons, or activating an aqueous solution of metal chlorite and such a water-retaining substance with excess protons. Proton generating species useful for the activation are acids such as acetic, phosphoric, and citric acid, and metal salts such as ferric chloride, ferric sulfate, ZnSO4, ZnCl2, CoSO4, CoCl2, MnSO4, MnCl2, CuSO4, CuCl2, and MgSO4. The activation can be performed by causing fluid to flow through a bed of zeolite crystals impregnated with calcium chloride (or other water-retaining substance) and sodium chlorite, and a bed of zeolite crystals impregnated with a proton generating species.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: January 16, 2001
    Inventor: Fred Klatte
  • Patent number: 6156267
    Abstract: The present invention provides a system and method for real-time monitoring and control of anti-microbial cycle parameters within a load-simulation device 6. The system and method simulate the same conditions as those within an acceptable standard challenge load to be sterilized. Integration of the system into a control system 17 allows critical anti-microbial parameter levels to be achieved and maintained within the simulated load throughout a cycle, thus resulting in a significant reduction in the number of unsuccessful cycles. A redundant parameter-monitoring system 100 within the system is included. When acceptable parameter levels are shown to have been met, the processed load is automatically released for use immediately upon completion of the cycle, thus eliminating the need for biological indicators and chemical integrators.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: December 5, 2000
    Assignee: Steris Corporation
    Inventors: Sanjeeth M. Pai, Peter E. Zell
  • Patent number: 6149821
    Abstract: A balanced water purification system is provided with a buffer compound, and oxidizer/clarifier compound, and a biocide compound disposed in multiple packets such that the biocide compound and the oxidizer/clarifier compound are contained in different packets. The composition purifies and clarifies water while maintaining the existing water pH. The composition may also include a filtration aid, an algicide, a calcium releasing source, a chelator, and a sequestering agent.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: November 21, 2000
    Assignee: Advanced Water Technology, Inc.
    Inventors: Rhyta Sabina Rounds, Tsui-Ling Hsu
  • Patent number: 6143088
    Abstract: A composition for decontamination of materials soiled by toxic agents, pacularly a peracid-based composition for effective decontamination of materials soiled by toxic agents, such as organophosphates and organosulfur compounds. The composition further includes a cationic surfactant.
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: November 7, 2000
    Assignee: Etat Francais represented by the Delegue General pour l ' Armement
    Inventors: Claude Lion, Claude Charvy, Gerard Delmas, Gilbert Magnaud
  • Patent number: 6132748
    Abstract: An important and central aspect of the present invention is the use of expanded amorphous aluminum silicate (EAAS) as a vehicle for a chlorite salt. This vehicle, when exposed to moisture, will release chlorine dioxide (ClO.sub.2) for purposes of deodorization or microbial suppression. Thus, where a particular area or volume is to be deodorized or made less microbally contaminated, the EAAS-chlorite salt (most preferably sodium chlorite) is placed in the area or volume to be treated and moisture is permitted to interact with the material. The result of the moisture is to permit the chemical reaction (presumably acidification) of the chlorite salt to yield chlorine dioxide gas. While normal EAAS has some inherent acidity, the inherent acidity is low enough so that, even when a chloride salt is encapsulated in the EAAS and the resultant mixture exposed to moisture, ClO.sub.2 release is very slow and over an extended period. Under most conditions, a more rapid release of ClO.sub.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: October 17, 2000
    Assignee: Bio-Cide International, Inc.
    Inventors: Neeraj Khanna, Theodore D. Head, Bryan D. Lowery
  • Patent number: 6132628
    Abstract: A method and apparatus for treating a liquid (2) to inhibit growth of living organisms therein by adding to the liquid an active biocidal ingredient formed by mixing an oxidant (4) and an amine source (6), by: producing a predetermined dilution of the oxidant (4); producing a predetermined dilution of the amine source (6); synchronously metering the two dilutions into a conduit (16) to continuously mix therein according to a predetermined ratio to produce the active biocidal ingredient having high reproducibility, stability and efficacy in situ in the conduit (16); and continuously injecting the active biocidal ingredient, as it is produced in situ in the conduit (16), directly from the conduit into the liquid being treated.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: October 17, 2000
    Assignee: A.Y. Laboratories Ltd.
    Inventor: Ayala Barak
  • Patent number: 6126706
    Abstract: A method of cleaning and disinfecting a contact lens, comprising the steps of: preparing a disinfectant which is an aqueous solution containing an iodine-complex polymer, and a diluent which is an aqueous solution containing ethylenediamine tetraacetic acid and/or soluble salts thereof, and a nonionic surface active agent; mixing the disinfectant and the diluent to provide a mixed solution, such that an available iodine concentration of the mixed solution immediately after mixing is in a range of 0.01-50 ppm, and such that concentrations of the ethylenediamine tetraacetic acid and/or the soluble salts thereof, and the nonionic surface active agent in the mixed solution are in a range of 0.0001-1.0 w/v % and in a range of 0.01-1.0 w/v %, respectively; and immersing the contact lens in the mixed solution for cleaning and disinfecting the contact lens, resulting in gradual reduction of the available iodine remaining in the mixed solution, by the ethylenediamine tetraacetic acid and/or the soluble salts thereof.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: October 3, 2000
    Assignee: Tomey Corporation
    Inventors: Satoru Matsumoto, Atsuko Sugiura
  • Patent number: 6123966
    Abstract: A stabilized two-part disinfecting system comprising a first part and a second part adapted to be mixed to yield an aqueous disinfecting composition. The first part contains a non-esterifying acid and an alcohol-containing humectant or antifreeze, while the second part contains a salt of an organic acid and an optional metal chlorite. Methods for making a disinfecting composition by mixing the two-part disinfecting system, as well as for disinfecting substrates by contact therewith, are also disclosed.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: September 26, 2000
    Assignee: Alcide Corporation
    Inventor: Robert D. Kross
  • Patent number: 6120731
    Abstract: A frozen chlorine dioxide-containing composition comprising a metal chlorite and a protic acid in a frozen aqueous matrix made by freezing a substantially chlorine dioxide-free aqueous solution comprising a metal chlorite at a concentration ranging from about 0.0005% to about 0.5% by weight and a protic acid at a concentration sufficient to lower the pH of the aqueous solution to a value of about 1.8 to about 5.0. The frozen chlorine dioxide-containing composition has a chlorine dioxide concentration of more than about 3 ppm, while the aqueous solution prior to freezing has a chlorine dioxide concentration less than about 3 ppm. The frozen chlorine dioxide-containing composition is used to disinfect substrates by contacting the same with the frozen chlorine dioxide-containing composition. Suitable substrates include food intended for human or animal consumption, such as meat, fish and poultry.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: September 19, 2000
    Assignee: Alcide Corporation
    Inventors: Robert D. Kross, G. Kere Kemp
  • Patent number: 6113853
    Abstract: In a sterilizing and rinsing water generating method of generating sterilizing and rinsing water by increasing the electric conductivity of water by adding halide electrolytes to the water and creating hypohalogenous acid by electrolyzing the water using an anode plate and a cathode, the mole ratio of bromide ions and chloride ions supplied by the electrolytes is set to 57:43 or a value in the vicinity of it. The sterilizing and rinsing water generated by the method can sterilize even germs which form spores having a high tolerance. There is also provided a sterilizing and rinsing water generating apparatus for embodying the method.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: September 5, 2000
    Assignee: Omega Co., Ltd.
    Inventors: Shinichi Nakamura, Kunihiko Fukuzuka, Hiromi Fujii
  • Patent number: 6113854
    Abstract: A method is provided for treatment of infectious medical waste. The method in a broad sense includes washing the infectious medical waste with a liquid to convert the infectious medical waste into noninfectious waste. In accordance with another aspect, a method is provided which includes a first step of wetting the infectious medical waste with a first liquid to remove loose particles and materials that are soluble in the first liquid from the infectious medical waste, and a second step of wetting the infectious medical waste with a disinfecting liquid to disinfect the infectious medical waste. An apparatus also is provided for treatment of infectious medical waste. The apparatus comprises a substantially liquid-tight volume for containing the infectious medical waste.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: September 5, 2000
    Inventors: Craig Milum, Joseph C. Sherrill
  • Patent number: 6103950
    Abstract: The description relates to a process for the production of aqueous chlorine dioxide solutions through oxidation of chlorite with oxo acids and/or oxo acid anions having a suitable redox potential in a buffered aqueous medium, wherein an acidic aqueous solution A is produced which has a pH of about 5 or less and contains the oxo acids and/or oxo acid anions, and the acidic aqueous solution A is mixed with an aqueous chlorite solution B to form chlorine dioxide, wherein a pH of less than 6.95 is adjusted in the reaction mixture, this pH value being stabilized by a buffering system contained therein.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: August 15, 2000
    Inventors: Manfred Rimpler, Fritz Kueke, Marcus Rimpler
  • Patent number: 6103189
    Abstract: Medical instruments, such as endoscopes, may be sterilized or disinfected in a liquid chemical sterilant (LCS). The LCS is of sufficient potency to sterilize the contaminated medical device. In addition it is self-degrading, non-contaminating, and non-corrosive. It does not require the addition of chemically contaminating anti-corrosive compounds and detergents. Preferred LCS for use in the invention include peracetic acid, silver activated hydrogen peroxide and acidic sodium hypochloride. A particularly preferred LCS is peracetic acid since it has particular applicability with plastic components of medical devices.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: August 15, 2000
    Inventor: Raymond C. Kralovic
  • Patent number: 6083463
    Abstract: A water system for supplying chilled water to a food production line. The chilled water is held in a holding tank which is sampled by a pump which delivers water to an analyzer. The water is first filtered to remove debris that would hamper the analysis. The analyzer determines the disinfectant level in the water, and generates a signal indicative of that level. When the disinfectant level falls below a predetermined level, a disinfection pump is activated to deliver additional disinfectant to the tank. The preferred disinfectant is Liquid Chlorine(sodium hypochlorite). The analyzer can measure the free available chlorine level, pH or oxidation-reduction potential of the water.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: July 4, 2000
    Assignee: Los Alamos Technical Associates, Inc
    Inventors: M. Bruce Dobbs, Gary M. Nolen, Michael F. Wahl, Amy Waldroup