Patents Examined by Valerie Fee
  • Preparation of spice extract antioxidant in oil
    Patent number: 5525260
    Abstract: An oil containing a spice extract which has antioxidant activity is prepared by mixing a spice extract contained in a polar solvent with an oil, evaporating the polar solvent from the mixture, adding a non-polar solvent to the mixture, to dilute the mixture and to precipitate constituents of the mixture, and stirring to obtain a homogenized non-polar solvent/extract/oil mixture, separating precipitate from that mixture and then evaporating the non-polar solvent phase to obtain an oil containing spice extract. The oil containing the spice extract may be mixed with further polar solvent containing the spice extract, after which the process is repeated to enrich the final oil product with spice extract.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: June 11, 1996
    Assignee: Nestec S.A
    Inventors: Robert Aeschbach, Hans-Juergen Wille
  • Mixtures and compositions containing phenothiazines
    Patent number: 5520848
    Abstract: A mixture containing phenothiazines which is obtainable by reacting a mixture of diphenylamines comprising______________________________________ 1 to 5% by weight a) diphenylamine of 8 to 18% by b) 4-tert-butyldiphenylamine weight of 21 to 31% by c) one or more compounds selected from weight of i) 4-tert-octyldiphenylamine ii) 4,4'-di-tert-butyldiphenylamine iii) 2,4,4'-tris-tert-butyldiphenylamine 20 to 31% by d) one or more compounds selected from weight of i) 4-tert-butyl-4'-tert-octyldiphenylamine ii) 2,2'- or 2,4'-di-tert-octyldiphenylamine iii) 2,4-di-tert-butyl-4'-tert-octyldiphenylamine, and 15 to 29% by e) the compound weight of i) 4,4'-di-tert-octyldiphenylamine, or the compounds i) 4,4'-di-tert-octyldiphenylamine and ii) 2,4-di-tert-octyl-4'-tert-butyldiphenylamine, ______________________________________with 1 to 200 mol % of elemental sulfur, in the presence of 0.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: May 28, 1996
    Assignee: Ciba-Geigy Corporation
    Inventor: Samuel Evans
  • Corrosion inhibitor composition and method of use
    Patent number: 5512212
    Abstract: A composition and method for inhibiting corrosion of iron and iron-containing metals in contact with aqueous systems containing sulfide compounds. The composition comprises (A) an aqueous solution of an alcohol, an acid, a fatty imidazoline, and an ethoxylated fatty diamine, and (B) an aqueous solution of a molybdate compound or salt thereof.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, James R. Ohlsen, Richard D. McBride
  • Corrosion inhibiting method and inhibition compositions
    Patent number: 5510057
    Abstract: The present invention provides a method and compositions useful for inhibiting corrosion of a corrodible metal resulting from contact of water and air with the metal. In this method, a stannous salt and a hydrocarbyl substituted succinimide of a polyethylene polyamine are added to the water in minor amounts and cooperatively reduce corrosion of the metal to a substantially zero rate. While the amount of each agent for an effective inhibition is minor, say in the range of from about 0.1 to 100 ppm, a relatively concentrated solution is required for addition to the water. Suitable solvent media include the lower alkanols and mixture thereof with or without added water. Isopropanol is preferred. The solvent component of the compositions also varies depending upon the particular imide and/or salt component employed and the concentration desired.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: April 23, 1996
    Inventor: Olen L. Riggs
  • Method of preventing yellow metal corrosion in aqueous systems with superior corrosion performance in reduced environmental impact
    Patent number: 5503775
    Abstract: The invention provides a method of preventing the corrosion of yellow metal surfaces in contact with water. The method comprising the step of adding to the water an environmentally safe mixed tolyltriazole composition including at least 65% of the 5-methylbenzotriazole isomer by weight.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: April 2, 1996
    Assignee: Nalco Chemical Company
    Inventors: Narasimha M. Rao, Frank F. Lu, Donald A. Johnson, Nhuan P. Nghiem
  • Asphaltene removal composition and method
    Patent number: 5504063
    Abstract: An asphaltene removal composition comprising an alkyleneamine-fatty acid condensation reaction product and one or more polar aprotic high dielectric constant solvents is useful for removing and inhibiting asphaltene deposits from wells, pipelines and associated equipment.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: April 2, 1996
    Assignee: Petrolite Corporation
    Inventors: Harold L. Becker, Bernhard W. Wolf
  • Halogen scavengers
    Patent number: 5503768
    Abstract: A halogen scavenger contains as an effective ingredient an aromatic compound which has a resonance-effect-relying electron donating group as a substituent. The aromatic compound is constituted, for example, by an aromatic ring such as a substituted or unsubstituted benzene, naphthalene, anthracene and pyridine ring, and at least one group (a resonance-effect-relying electron donating group) which contains a lone-pair-containing hetero atom, such as an oxygen, sulfur or nitrogen atom, adjacent to the aromatic ring.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: April 2, 1996
    Assignee: S.T. Chemical Co., Ltd.
    Inventors: Yoshikazu Tokuoka, Haruo Shibatani
  • Process for preparing multiply fluorinated nitrobenzenes
    Patent number: 5502260
    Abstract: Multiply, preferably doubly or triply, fluorinated nitrobenzenes are prepared in an advantageous way from the corresponding chloronitrobenzenes and an alkali metal fluoride in a chlorine-fluorine exchange reaction by catalyzing the reaction with a quaternary ammonium compound comprising at least one alkoxypolyoxyalkyl radical.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: March 26, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Thomas Schach, Theodor Papenfuhs
  • Microbicidal agent containing polymeric quaternary ammonium borate for preserving and disinfecting industrial products and industrial plants
    Patent number: 5492650
    Abstract: The invention relates to the use of a microbicidal agent containing polymeric quaternary ammonium borate, obtained by simultaneous reaction of amines of the formula I or II ##STR1## in which R.sup.1 to R.sup.7 and A are as defined in the description, with 1 to 20 mol of ethylene oxide or propylene oxide and 0.6 to 1.5 mol of boric acid, boric acid esters or salts of boric acid, in each case per mole of nitrogen equivalent, as a preservative and/or disinfectant for industrial products and industrial plants.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: February 20, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Frank Lang, Erich Gatter, Helmut Berenbold, Detlef Wehle
  • Process for the production of dinitrobenzene and mononitrobenzene
    Patent number: 5488187
    Abstract: Aromatic nitration reactions and, more specifically, a process for nitrating benzene to produce dinitrobenzene or mononitrobenzene in the absence of sulfuric acid and in the absence of any dipolar aprotic solvent.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: January 30, 1996
    Assignee: Olin Corporation
    Inventor: Robert W. Mason
  • Poly-substituted phthalocyanines
    Patent number: 5486274
    Abstract: The use of substituted phthalocyanines for the generation of singlet oxygen in which at least one of the peripheral carbon atoms in the 1-16 positions of the phthalocyanine nucleus (M.sub.k Pc) of Formula (1): ##STR1## wherein: M is selected from H, metal, halometal, oxymetal and hydroxymetal; andk is the inverse of 1/2 of the valency of M; is linked via an oxygen atom to an aromatic radical and the remaining peripheral carbon atoms are unsubstituted or substituted by any combination of atoms or groups and sulphonated derivatives thereof provided that the phthalocyanine absorbs electromagnetic radiation at a wavelength from 650 nm to 800 nm.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: January 23, 1996
    Assignee: Zeneca, Limited
    Inventors: Dean Thetford, Peter Gregory
  • Compositions combinations of dessicants and vapor-corrosion inhibitors
    Patent number: 5486308
    Abstract: A composition for inhibiting corrosion. The composition contains a mixture of a dessicant and a vapor-corrosion inhibitor. The mixture of dessicant and inhibitor is synergistic: the service life of the corrosion inhibitor is signficiantly longer when so used than when used alone or in in the presence of but not physically mixed with the dessicant.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: January 23, 1996
    Assignee: A+ Corp.
    Inventor: Donald P. Mayeaux
  • Process for preparing fluoronitrobenzenes
    Patent number: 5476976
    Abstract: Fluoronitrobenzenes are prepared in an advantageous way from the corresponding chloronitrobenzenes and an alkali metal fluoride by means of a chlorine-fluorine exchange reaction with replacement of a chlorine atom by a fluorine atom, by catalyzing the reaction with a quaternaryammonium compound which comprises at least one alkoxypolyoxyalkyl radical.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: December 19, 1995
    Assignee: Hoechst AG
    Inventors: Thomas Schach, Theodor Papenfuhs
  • Corrosion inhibitor
    Patent number: 5472638
    Abstract: A corrosion inhibitor is disclosed which is produced by reacting an aqueous alkanolamine solution with an acid gas to form an amide and an alkanolamine salt, mixing aqueous alkanolamine with said amide and said alkanolamine salt in the absence of added inorganic base, and reacting the mixture at elevated temperature.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: December 5, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Bruce D. McLaughlin, Tsoung Y. Yan
  • Rust, corrosion, and scale remover
    Patent number: 5468303
    Abstract: A rust, corrosion, and scale removing composition is provided. It comprises an additive concentrate and water. The additive concentrate preferably consists of, on a parts by weight basis, 1.5 to 5 parts glycolic acid, 0.2 to 1 parts tetrasodium salt of ethylenediaminetetraacetic acid, 2 to 6 parts citric acid, and 1 to 3 parts trisodium citrate dihydrate.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: November 21, 1995
    Assignee: ZT Corporation
    Inventor: Glenn C. Thomas, Sr.
  • Bleaching composition
    Patent number: 5464563
    Abstract: A bleaching composition for cellulosic materials such as paper pulp, cotton and cotton blends. The chemical system of the present invention includes a mixture of sodium hydroxide, optical brighteners and an enhanced hydrogen peroxide including a silicate-free stabilizer. In the preferred embodiment, the silicate-free stabilizer includes; magnesium acetate; phosphonic acid derivative or substituted phosphonic acids; dipicolinic acid; and the balance water. The resulting textile goods are soft, absorbent, silicate-free with a Hunter Scale whiteness of greater than about 85. Because a silicate-free stabilizer is used, low levels of extractable solids are obtained.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: November 7, 1995
    Assignee: Burlington Chemical Co., Inc.
    Inventors: Samuel B. Moore, James F. Leuck, Edwin T. Turner
  • Stable solid acetylperoxyborate compounds
    Patent number: 5462692
    Abstract: Stable, solid acetyl peroxyborate compounds which are active oxygen-containing compounds derived from acetic acid and boron-oxygen compounds. The compounds of the invention have a peracetic acid content which can be liberated instantly and directly in water with only minor formation of hydrogen peroxide The acetyl peroxyborates of the invention are useful in washing, bleaching and cleaning agent and disinfectant applications and as oxidizing agents in organic synthesis.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: October 31, 1995
    Assignee: Peroxid-Chemie GmbH
    Inventors: Richard Roesler, Siegfried Schelle, Michael Gnann, Werner Zeiss
  • Air purifying agent and a process for producing same
    Patent number: 5462693
    Abstract: An air purifying agent comprising a carrier which contains short pulp fiber, on which one or more chemical components selected from the group consisting of acids, alkalis, oxidizing agents, reducing agents and antimicrobial components are supported. According to the present invention, an air purifying agent which is low in weight, is safe to handle and exhibits excellent effect in removing contaminated gases containing low concentrations of contaminants.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: October 31, 1995
    Assignee: Nippon Chemical Industrial Co., Ltd.
    Inventors: Shozo Ichimura, Seikichi Tabei, Michinori Hashimoto
  • Corrosion inhibitor composition and method of use
    Patent number: 5459125
    Abstract: A composition and method for inhibiting corrosion by chlorine dioxide in oil field water flood systems are disclosed. The composition is comprised of an alcohol, an acid, a fatty imidazoline, an ethoxylated fatty diamine, and water. This composition has proven more effective than chromates at inhibiting the corrosion caused by chlorine dioxide, further without the serious toxicological effects caused by the use of chromates.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: October 17, 1995
    Assignee: BJ Services Company
    Inventors: James R. Ohlsen, J. Michael Brown, Gene F. Brock, Veena K. Mandlay
  • Process for metal cleaning
    Patent number: 5443651
    Abstract: Aqueous compositions comprising certain amino acids such as polyaspartic acid or aspartic acid/glutamic acid copolymers when at least partially protonated at pH of 7 or below effectively clean ferrous metal surfaces by contacting said surfaces with said compositions.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: August 22, 1995
    Assignee: Monsanto Company
    Inventors: Dennis J. Kalota, David C. Silverman