Nitrite Patents (Class 424/619)
  • Patent number: 7078060
    Abstract: Solutions and aerosols of metal-containing compounds are disclosed. Methods of preparing and using the solutions and aerosols, particularly in the treatment of a subject having a condition, are also disclosed. The metal-containing material can be, for example, an antimicrobial material, an antibacterial material, an anti-inflammatory material, an anti-fungal material, an anti-viral material, an anti-cancer material, a pro-apoptosis material, and/or an MMP modulating material. In certain embodiments, the metal-containing material is an atomically disordered, silver-containing material.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: July 18, 2006
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Robert E. Burrell, John B. Wright, Kan Lam, Hua Qing Yin, Antony G. Naylor, Peter H. Moxham, Scott H. Gillis, Paul Schechter
  • Patent number: 7056537
    Abstract: The present invention relates to a method of abating hydrogen sulfide gas emitted by or generated in landfills. Certain embodiments of the present invention relate to contacting hydrogen sulfide gas with Fuller's earth or other carrier materials and metals such as silver, copper, iron, zinc or mixtures thereof, and other components.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: June 6, 2006
    Assignee: Aceto Corporation
    Inventor: Richard Weschler
  • Patent number: 7008647
    Abstract: The invention relates to the use of one or more antimicrobial metals selected from silver, gold, platinum, and palladium but most preferably silver, preferably formed with atomic disorder, and preferably in a nanocrystalline form, for the treatment of a acne. The nanocrystalline antimicrobial metal of choice may be used in the form of a nanocrystalline coating of one or more antimicrobial metals, a nanocrystalline powder of one or more antimicrobial metals, or a solution containing dissolved species from a nanocrystalline powder or coating of one or more antimicrobial metals.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: March 7, 2006
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Robert Edward Burrell, Hua Qing Yin
  • Patent number: 7005145
    Abstract: The invention relates to polymer dispersions or polymer solutions that are given antibacterial and fungicidal properties by metal ions of group Ib of the Periodic table. According to the invention, a) the polymer dispersions or polymer solutions are not produced using controllers that contain thiol groups, b) the metal ions have been introduced by means of an electrochemical process and c) said dispersions or solutions do not contain any active quantity of organic biocides.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: February 28, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Maximilian Angel, Bernhard Fussnegger, Silke Gebert
  • Patent number: 7001617
    Abstract: The invention relates to a method to induce apoptosis and to inhibit matrix metalloproteinases in a disease condition in a human or animal by contacting hyperplastic tissue, tumor tissue, or a cancerous lesion with one or more antimicrobial metals, preferably formed with atomic disorder, and preferably in a nanocrystalline form. In another aspect of the invention, there is provided a method of preventing excessive release of matrix metalloproteinases from an inflammatory cell in a disease condition in a human or an animal by contacting the cell with a therapeutically effective amount of a noble metal in a crystalline form characterized by atomic disorder, or with a solution derived therefrom to provide a modulatory effect on one or more matrix metalloproteinases, wherein the one or more noble metals is formed with atomic disorder, and preferably in a nanocrystalline form.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: February 21, 2006
    Assignee: Nueryst Pharmaceuticals Corp.
    Inventors: Robert Edward Burrell, John Barrymore Wright, Kan Lam
  • Patent number: 6989156
    Abstract: Therapeutic treatments using the direct application of selected structures of antimicrobial metals in free-standing powder form, solution form and/or suspension form in therapeutically effective amounts. The selected structures of antimicrobial metals serve as an antimicrobial agent, an anti-inflammatory agent, an immuno modulator agent, an enzyme modulator agent, and/or an anti-tumor agent, for human and/or animal use.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: January 24, 2006
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventor: Scott H. Gillis
  • Patent number: 6989157
    Abstract: Dry powders of metal-containing compounds are disclosed. Methods of preparing and using the dry powders, particularly in the treatment of a subject having a condition, are also disclosed. The metal-containing material can be, for example, an antimicrobial material, an antibacterial material, an anti-inflammatory material, an anti-fungal material, an anti-viral material, an anti-cancer material, a pro-apoptosis material, and/or an MMP modulating material. In certain embodiments, the metal-containing material is an atomically disordered, silver-containing material.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: January 24, 2006
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Scott H. Gillis, Paul Schechter, Robert E. Burrell
  • Patent number: 6939568
    Abstract: The invention relates to the use of one or more antimicrobial metals, most preferably silver, preferably formed with atomic disorder, and preferably in a nanocrystalline form, for the treatment of inflammatory skin conditions. The nanocrystalline antimicrobial metal of choice may be used in the form of a nanocrystalline coating of one or more antimicrobial metals, a nanocrystalline powder of one or more antimicrobial metals, or a solution containing dissolved species from a nanocrystalline powder or coating of one or more antimicrobial metals.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: September 6, 2005
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Robert Edward Burrell, Hua Qing Yin
  • Patent number: 6908628
    Abstract: Wide spectrum disinfecting and antiseptic composition for use in the fields of human medicine, veterinary science and industry, characterized because it includes: Hydrogen peroxide, lactic acid and halogen salts (Br, I) and/or salts of heavy metals (for example, silver halides) with surfactant agents, either cationic, like chlorhexidine and/or quaternary ammonium salts, like didecyl-methyl-polyoxy-ethyl-ammonium propionate, chlorides of ammonium or compounds of ammonium propylamide or anionic, like lauryl sulphate, dodecyl sulphate or alkyl succinic salts, with suitable excipients, some of which may be ethyl or isopropyl alcohol, chlorhexidine, non-chlorinated quaternary ammonium salts, like didecyl-methyl-polyoxy-ethyl-ammonium propionate, combined or not with iodine, and/or its salts, together with excipients, some of which may be ethyl or isopropyl alcohol.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: June 21, 2005
    Assignee: OFTRAI, S.L.
    Inventor: Rafael Herruzo Cabrera
  • Patent number: 6897349
    Abstract: The present invention comprises methods and compositions for making a silver-containing antimicrobial hydrophilic material. More particularly, the present invention comprises methods and compositions for stabilized silver antimicrobial devices comprising a matrix comprising a polymer network and a non-gellable polysaccharide, and an active agent. The matrix may be formed into any desired shape for its desired uses.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: May 24, 2005
    Assignee: Acrymed
    Inventors: Bruce L. Gibbins, Lance D. Hopman
  • Patent number: 6872402
    Abstract: Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: March 29, 2005
    Assignee: Degussa AG
    Inventors: Helmut Mangold, Rainer Golchert
  • Patent number: 6866871
    Abstract: Dry powders of metal-containing compounds are disclosed. Methods of preparing and using the dry powders, particularly in the treatment of a subject having a condition, are also disclosed. The metal-containing material can be, for example, an antimicrobial material, an antibacterial material, an anti-inflammatory material, an anti-fungal material, an anti-viral material, an anti-cancer material, a pro-apoptosis material, and/or an MMP modulating material. In certain embodiments, the metal-containing material is an atomically disordered, silver-containing material.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: March 15, 2005
    Assignee: Nucryst Pharmaceuticals Corp.
    Inventors: Scott H. Gillis, Paul Schechter, Robert E. Burrell
  • Patent number: 6824794
    Abstract: A water treatment agent and method of treating water to inhibit, reduce, or prevent the formation of algae and bacteria in a water body. The water treatment agent may include copper sulfate penta-hydrate and/or silver, di-sodium ethylene di-amine tetra-acetic acid dihydrate, a scale inhibitor, a shocking agent and a buffer agent. For instance, the treatment agent may include a composition of copper sulfate pentahydrate, di-sodium ethylene di-amine tetra-acetic acid, monopotassium phosphate or sulfuric acid, and potassium monopersulfate and 1-hydroxyethylidene-1,1-diphosphonic acid.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: November 30, 2004
    Assignee: Innovative Water Technologies, Inc.
    Inventors: Terry A. Ring, Tom Smolkov, M. Anthony Gamarra
  • Patent number: 6780332
    Abstract: A water treating system utilizes antimicrobial sand filter for killing bacteria and preventing microbial growth. Said antimicrobial sand filter consists of organic quaternary ammonium salt and inorganic metal compound.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: August 24, 2004
    Assignee: Parker Holding Services Corp.
    Inventors: Yen-Kuen Shiau, Chung-Hsun Wu, Vincent T Chuang
  • Publication number: 20030235623
    Abstract: An aqueous disinfecting composition based on hydrogen peroxide and a mixture of carboxylic and percarboxylic acids, wherein the weight ratio of the said mixture to hydrogen peroxide is from about 0.002 to about 0.08, and wherein the said composition further comprises an effective amount of a metal component as a source of metal ions.
    Type: Application
    Filed: June 21, 2002
    Publication date: December 25, 2003
    Inventor: Piet J.A. Van Oosterom
  • Patent number: 6653519
    Abstract: Compositions and methods for destroying biological agents such as toxins and bacteria are provided wherein the substance to be destroyed is contacted with finely divided metal oxide or hydroxide nanocrystals. In various embodiments, the metal oxide or metal hydroxide 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 or metal hydroxide nanocrystals can be pressed into pellets for use when a powder is not feasible. Preferred metal oxides for the methods include MgO, SrO, BaO, CaO, TiO2, ZrO2, FeO, V2O3, V2O5, Mn2O3, Fe2O3, NiO, CuO, Al2O3, SiO2, ZnO, Ag2O, [Ce(NO3)3—Cu(NO3)2]TiO2, Mg(OH)2, Ca(OH)2, Al(OH)3, Sr(OH)2, Ba(OH)2, Fe(OH)3, Cu(OH)3, Ni(OH)2, Co(OH)2, Zn(OH)2, AgOH, and mixtures thereof.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: November 25, 2003
    Assignee: Nanoscale Materials, Inc.
    Inventors: Olga Koper, Kenneth J. Klabunde, Lisa S. Martin, Kyle B. Knappenberger, Laura L. Hladky, Shawn P. Decker
  • Patent number: 6583176
    Abstract: A non-toxic environmentally friendly aqueous disinfectant is disclosed for specific use as prevention against contamination by potentially pathogenic bacteria and virus. The aqueous disinfectant is formulated by electrolytically generating silver ions in water in combination with a citric acid. The aqueous disinfectant may include a suitable alcohol and/or a detergent. The aqueous disinfectant has been shown to be very effective at eliminating standard indicator organisms such as staphylococcus aureus, salmonella cholerasuis and pseudomonas aeruginosa.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: June 24, 2003
    Assignee: Innovative Medical Services
    Inventor: Andrew B. Arata
  • 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: 20030082133
    Abstract: A novel cationic dendrimer biocide-silver nanocomposite and methods for its use as a biocide. The biocidal nanocomposites of the present invention are effective against a variety of microbial species, including anthrax. The invention is also highly stable and safe for exposure to human skin. The invention has applications as an antibiological warfare agents, antimicrobial agent for surface coatings and as a general biocide that is safe for human exposure.
    Type: Application
    Filed: December 4, 2002
    Publication date: May 1, 2003
    Inventors: Stuart L. Cooper, Chris Z. Chen
  • Patent number: 6541038
    Abstract: A method for treating wood, characterized by impregnating wood with a metal-containing treating agent containing lignin and/or lignin derivatives and a metal, a metal compound, and/or a metal ion and oxidizing and/or macromolecularizing of the lignin and/or lignin derivatives in the wood to fix the metal component in the wood, and wood and woody materials obtained by the treating method. According to the method of the present invention, while effectively utilizing lignins, lignosulfonic acids, or lignosulfonic acid salts, leaching of the metal component can be suppressed to a low level to thereby retain the effects due to the incorporation of the metal components for a prolonged period.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: April 1, 2003
    Assignee: SDS Biotech K.K.
    Inventors: Keijitsu Tanaka, Hirobumi Aoki, Takashi Echigo
  • Publication number: 20030049272
    Abstract: A pharmaceutical composition which reduces or eliminates the drug abuse potential of central nervous system stimulant comprising: (a) a central nervous system stimulant selected from the group consisting of methylphenidate, amphetamine, methamphetamine, and combinations thereof; and (b) a mucous membrane irritant selected from the group consisting of organic and inorganic acid, salt, ketone, nitrite, sulfide, bisulfate, persulfate, glycerophosphate, hypophosphate, borate, titanate, amino acid, peptide, and combinations thereof, wherein the mucous membrane irritant produces irritation when contacted with the skin or mucous membrane.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 13, 2003
    Inventors: Yatindra Joshi, Russell Somma
  • Publication number: 20020132013
    Abstract: Disclosed herein are novel cautery devices, and methods and kits implementing the same. The disclosed devices are especially useful for localized delivery of a liquid caustic agent to treat various defects associated with malformations and injuries resulting in chronic or acute bleeding, or to ablate tumors, occlude fistulae or other luminal structures. The disclosed devices have uses in a number of medical disciplines, and specific examples are provided pertaining to treatment of defects, malformations, and injuries, or bleeding due to medical procedures, in and along the gastrointestinal tract.
    Type: Application
    Filed: July 5, 2001
    Publication date: September 19, 2002
    Inventor: Harry Moulis
  • Patent number: 6423331
    Abstract: Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: July 23, 2002
    Assignee: Degussa-Huls AG
    Inventors: Helmut Mangold, Rainer Golchert
  • Publication number: 20020073891
    Abstract: Methods of enhancing the photostabilizing of silver in medical materials are described. More particularly, the methods increase the photostabilization of silver in certain materials comprising hydrophilic, amphoteric and anionic polymers by subjecting the polymers to solutions containing an organic solvent and silver, during or after which one or more agents are added which facilitate the photostablization of the material.
    Type: Application
    Filed: November 29, 2001
    Publication date: June 20, 2002
    Inventors: David Parsons, Elizabeth Jacques, Philip Bowler
  • Patent number: 6383273
    Abstract: The invention relates to a process for producing compositions containing a biocidal compound or adsorbent and/or catalyst compound and the compositions thereof. The invention also relates to a method for reducing or eliminating the amount of a bioactive agent or contaminant from an environment by contacting the environment with the composition of for a sufficient time to reduce or eliminate the amount of the bioactive agent or contaminant in the environment.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: May 7, 2002
    Assignee: Apyron Technologies, Incorporated
    Inventors: Bryan E. Kepner, Eric A. Mintz
  • 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: 6224898
    Abstract: An antimicrobial agent which is a composite composition of matter comprising a metal or metal-containing compound distributed on or in a dendritic polymer, and a method of treating wounds comprising applying to the wounds said antimicrobial agent. In a most preferred embodiment, said antimicrobial agent comprises discrete nanosized silver or silver containing compounds distributed on or in dendritic polymers.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: May 1, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Lajos Balogh, Gary L. Hagnauer, Donald A. Tomalia, Albert T. McManus
  • Patent number: 6197814
    Abstract: A non-toxic environmentally friendly aqueous disinfectant is disclosed for specific use as prevention against contamination by potentially pathogenic bacteria and virus. The aqueous disinfectant is formulated by electrolytically generating silver ions in water in combination with a citric acid. The aqueous disinfectant may include a suitable alcohol and/or a detergent. The aqueous disinfectant has been shown to be very effective at eliminating standard indicator organisms such as staphylococcus aureus, samonella cholerasuis and Pseudomonas aeruginosa.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: March 6, 2001
    Assignee: NVID International, Inc.
    Inventor: Andrew B. Arata
  • Patent number: 6197351
    Abstract: A method and composition for effecting chemical necrosis of a tissue lining of a mammalian body cavity, particularly a uterine endometrium, by delivering a caustic tissue necrosing composition, e.g., a silver nitrate and dextran paste, to the tissue to be necrosed and allowing the paste to remain in contact with the target tissue for a period of time sufficient to chemically necrose substantially the entirety of the tissue lining, and then contacting the caustic composition with a deactivating agent, e.g., an aqueous sodium chloride solution, thereby rendering the caustic composition non-caustic, and then rinsing the cavity. Compositions and methods for delivering medicaments are also disclosed.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: March 6, 2001
    Inventor: Robert S. Neuwirth
  • Patent number: 6187346
    Abstract: A method and composition for effecting necrosis of a tissue lining of a mammalian body cavity, particularly a uterine endometrium, by introducing an applicator comprising a hysteroscope housing a first and a second catheter connected to a catheter into the uterus, distending the uterus by introducing CO2 gas under pressure, delivering a silver nitrate paste to the endometrium through the first catheter and allowing the paste to remain a sufficient amount of time to substantially cauterize the entirety of the tissue lining, particularly the endometrium and delivering an aqueous sodium chloride solution to the uterus through the second catheter thereby neutralizing the silver nitrate and rinsing the uterine cavity.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: February 13, 2001
    Assignee: Ablation Products, Inc.
    Inventor: Robert S. Neuwirth
  • Patent number: 6093422
    Abstract: The present invention is directed to a biocidal water treatment composition, water treatment apparatus, and method of treating water to reduce levels of pathogens. The composition contains sources of copper, zinc, and silver metal ions within a crosslinked polymer matrix. Examples of these ion sources include copper sulfate, zinc sulfate, and silver nitrate. An example of the crosslinked polymer matrix is crosslinked chitosan, which also serves to clarify the water and release the metal ions over time. The product is easy to manufacture, and allows the use of decreased halogen sanitizer, as well as decreased copper ion, thereby decreasing the likelihood of staining. The product simultaneously provides good bactericidal and algaecidal properties, despite low levels of copper ion and low chlorine levels.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Zodiac Pool Care, Inc.
    Inventors: Raymond P. Denkewicz, Jr., Ernest E. Senderov, Joseph W. Grenier
  • Patent number: 5820918
    Abstract: A process for impregnating a medical device made from a water absorbable polymer material, e.g., a hydrogel, with a medical compound having low solubility in aqueous solutions, e.g., an antiseptic or radiopaque compound, is disclosed. The device is first infiltrated with an aqueous solution containing a first water soluble, ionizable compound, and subsequently infiltrated with an aqueous solution containing a second water soluble, ionizable compound. The ionizable compounds are selected such that they react after mutual contact to form the medical compound in-situ within the device.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: October 13, 1998
    Assignee: Hercules Incorporated
    Inventors: John M. Ronan, Samuel A. Thompson
  • Patent number: 5736032
    Abstract: Biowaste treatment agents for treating biowastes in a manner which: (a) keeps noxious and toxic substances from being released from the biowaste, and (b) neutralizes such substances released during the course of stabilizing the biowaste. The treatment agents include a surfactant in an amount of from 1.0 to 99 percent of the treatment agent, a metal component in an amount from 0.5 to 85 percent of the treatment agent, the metal component including a source of zinc, or copper, or a combination of copper with aluminum or iron, and an aldehyde in an amount from 0.1 to 80 percent of the treatment agent.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: April 7, 1998
    Inventors: James P. Cox, Robert W. Duffy Cox
  • Patent number: 5698229
    Abstract: An antimicrobial composition, characterized by containing an inorganic compound on which silver ion is supported and a compound represented by the following formula ?2!: ##STR1## wherein R.sup.1 is hydrogen or a lower alkyl group and R.sup.2 is hydrogen or an alkali metal.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: December 16, 1997
    Assignee: Toagosei Co., Ltd.
    Inventors: Shuichi Ohsumi, Hideki Kato
  • Patent number: 5500230
    Abstract: The present invention relates to a method of treating cranial fluid volume dysfunctions such as glaucoma in an individual, comprising administering compounds which effect an increase in cyclic GMP at the site of the dysfunction or at the site of synthesis or removal of the accumulating fluid. In particular, the method of treatment involves the topical use of hydralazine, non-organic nitrites or nitroglycerine, and the systematic use of hydralazine or non-organic nitrites.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: March 19, 1996
    Assignee: The General Hospital Corporation
    Inventor: James A. Nathanson
  • Patent number: 5405644
    Abstract: A process for producing an antimicrobial fiber having a silver-containing inorganic microbicide characterized by using a treating solution for producing said fiber which contains a discoloration inhibitor represented by the following general formula: ##STR1## wherein R.sup.1 is hydrogen or a lower alkyl group and R.sup.2 is hydrogen or an alkali metal.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: April 11, 1995
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Shuichi Ohsumi, Hideki Kato
  • Patent number: 5358722
    Abstract: Ferritin analogs comprising an apoferritin protein shell and a core substantially devoid of ferrihydrite, e.g. of inorganic composition such as aluminum hydroxide or organic composition such as acetaminophen. The protein shell can be removed from ferritin analog to produce spherules having a substantially monomodal nominal diameter between about 45 and 90 Angstroms.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: October 25, 1994
    Assignee: Monsanto Company
    Inventor: Bruce F. Monzyk
  • Patent number: 5180585
    Abstract: An antimicrobial composition comprising an inorganic particle with a first coating providing antimicrobial properties and a second coating providing a protective function, method for preparing the same and uses; further processes for producing polymeric articles and a method for controlling microorganisms.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: January 19, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard W. Jacobson, Michael H. Scholla, Sam L. Samuels