Patents Examined by Robert L. Stoll
  • Patent number: 5324448
    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: December 14, 1992
    Date of Patent: June 28, 1994
    Assignee: A + Corp.
    Inventor: Donald P. Mayeaux
  • Patent number: 5324447
    Abstract: Methods for disinfecting a lens is disclosed. The methods comprise contacting a lens to be disinfected in a liquid medium with at least one chlorine dioxide precursor in the presence of at least one activator component selected from organic acid anhydrides, oxygen-releasing components and mixtures thereof to effect formation of chlorine dioxide from the chlorine dioxide precursor, thereby disinfecting the lens. Compositions useful in the above-noted methods are also disclosed.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: June 28, 1994
    Assignee: Allergan, Inc.
    Inventors: Sam W. Lam, Paul S. Ripley, J. Abraham M. Espiritu
  • Patent number: 5324824
    Abstract: A method for preparing a coordination complex of an isonitrile ligand and a radioisotope of Tc, Ru, Co, Pt, Re, Os, Ir, W, Re, Cr, Mo, Mn, Ni, Rh, Nb and Ta from a non-radioactive metal adduct of the isonitrite.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: June 28, 1994
    Assignee: The DuPont Merck Pharmaceutical Co.
    Inventors: Alan B. Carpenter, Jr., Leo J. Maheu, Michael A. Patz, Thomas H. Tulip, Karen E. Linder, Vinayakam Subramanyam, Jeffery S. Thompson
  • Patent number: 5324872
    Abstract: The invention concerns a gasphase process for the preparation of nitrobenzene from benzene and nitric acid, wherein catalysts are applied based on the zeolite mordenite.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: June 28, 1994
    Assignee: CU Chemie Uetikon AG
    Inventors: Herman W. Kouwenhoven, Leopoldo Bertea, Roel Prins
  • Patent number: 5322638
    Abstract: Compounds of the formula ##STR1## wherein A.sup.1 denotes a single covalent bond and A.sup.2 denotes 1,4-phenylene or trans-1,4-cyclohexylene or A.sup.1 denotes trans-1,4-cyclohexylene and A.sup.2 denotes a single covalent bond; X.sup.1 signifies fluorine or chlorine; X.sup.2 represents fluorine or, when X.sup.1 signifies chlorine, also hydrogen or chlorine; and R.sup.1 signifies 1E-alkenyl with 2 to 12 carbon atoms,their manufacture, liquid crystalline mixtures which contain such compounds and their use for electro-optical purposes.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: June 21, 1994
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Martin Schadt, Alois Villiger
  • Patent number: 5322630
    Abstract: A method of acidizing a subterranean formation with an acqueous acid solution wherein the acid solution contains corrosion inhibiting amounts of an amine derivative prepared by reacting an unsaturated carboxylic acid with (a) fatty amine or polyamine, or (b) a fatty amido amine or polyamine, or (c) a fatty imidazoline amine or polyamine. The derivative is characterized by the absence of primary amino groups, and preferably contains only tertiary amino groups.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: June 21, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Dennis A. Williams, James R. Looney, Daniel S. Sullivan, Brent I. Bourland, John A. Haslegrave, Paul J. Clewlow, Niall Carruthers, Terence M. O'Brien
  • Patent number: 5322640
    Abstract: This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a water-soluble ampholytic substituted imidazoline having the formula: ##STR1## wherein R1 comprises a radical selected from the group consisting of hydrogen, alkyl, and aryl groups having 6 to 30 carbons; R2 comprises a radical selected from the group consisting of polyalkylene polyamines having from 2 to 16 carbon atoms, NH.sub.2, N(R.sub.4).sub.2, OH and SH; R.sub.3 is a radical selected from the group consisting of carboxylate, carbonate, sulfite, sulfate, phosphite, and phosphate; n is a number from 1 to 10; and, R4 comprises a branched or linear alkyl chain having a length of 1 to 8.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: June 21, 1994
    Assignee: Nalco Chemical Company
    Inventors: Norman E. Byrne, John D. Johnson
  • Patent number: 5322929
    Abstract: The present invention is directed to novel radiopharmaceutical imaging agents incorporating Tc-99m as a radiolabel. In particular, the novel imaging agents disclosed herein have relatively high renal extraction efficiencies, and hence are useful for conducting renal function imaging procedures. The novel Tc-99m compounds of a present invention have the following general formula: ##STR1## wherein X is S or N; and wherein Y is --H or wherein Y is ##STR2## and where R.sub.1 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ; R.sub.2 is --H, --CH.sub.2 CO.sub.2 H, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 CO.sub.2 H, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.3, --CH.sub.2 CH.sub.3, CH.sub.2 C.sub.6 H.sub.5, or --CH.sub.2 OH; and Z is --H, --CO.sub.2 H, --CONH.sub.2, --SO.sub.3 H, --SO.sub.2 NH.sub.2, or --CONHCH.sub.2 CO.sub.2 H; and the Tc is Tc-99m; and water-soluble salts thereof.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: June 21, 1994
    Assignee: University of Utah Research Foundation
    Inventors: Alan Fritzberg, Sudhaker Kasina, Dennis L. Johnson
  • Patent number: 5320785
    Abstract: The permanence of the flame-resistant finish of fibre materials, in particular those based on cellulose, is improved if a phosphono compound which contains an N-methylol group. is used together with an organic carboxylic acid as the finishing agent. If oxalic acid in particular is used as the carboxylic acid, the finished fibre material can be stored in a damp environment for a prolonged period of time without intermediate washing being necessary. The tendency of the finish to hydrolyse in a damp atmosphere is reduced by using the organic carboxylic acid instead of a mineral acid.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: June 14, 1994
    Assignee: Ciba-Geigy Corporation
    Inventor: Salman Dermeik
  • Patent number: 5320779
    Abstract: A corrosion inhibitor treatment composition for cooling water systems is disclosed in which no chromate is used and no free orthophosphate is present comprising a combination of a localized corrosion inhibitor in the form of a salt of molybdenum, vanadium, or tungsten, a general corrosion and scale inhibitor comprising zinc or nickel, a pair of organic phosphonates, and a stabilizing agent.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: June 14, 1994
    Assignee: Nalco Chemical Company
    Inventor: Kenneth P. Fivizzani
  • Patent number: 5320778
    Abstract: A vapor phase corrosion inhibitor-desiccant composite comprising silica gel granules coated with a vapor phase corrosion inhibitor component. The corrosion inhibitor component is selected from a formulation comprising anhydrous molybdates such as ammonium dimolybdate, sodium molybdate and amine molybdates mixed with benzotriazole and sodium nitrate, or from a formulation comprising amine benzoates, amine nitrates and benzotriazole. The composites can be impregnated into foam, extruded with polyolefin films which can additionally be laminated with metallized second film, or encapsulated in an air-permeable container. The corrosion inhibitor formulations have vapor pressures which provide ongoing corrosion protection for susceptible articles situated favorably with respect to the composite.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: June 14, 1994
    Assignee: Cortec Corporation
    Inventors: Boris A. Miksic, Joseph M. Foley, Tsi-Zong Tzou
  • Patent number: 5320825
    Abstract: Disclosed are novel compounds for CNS neurotransmitter systems, especially for the neurotransmitter serotonin, which have the formula ##STR1## where each of U, V, W, X, Y and Z is independently selected from the group consisting of hydrogen; halogen; C.sub.1 -C.sub.4 alkyl; C.sub.1 -C.sub.4 alkyl substituted with one or more moieties selected from halogen atoms and hydroxy groups; C.sub.1 -C.sub.4 alkoxy; C.sub.1 -C.sub.4 alkoxy substituted with one or more moieties selected from halogen atoms and hydroxy groups; C.sub.1 -C.sub.6 heterocycles; C.sub.1 -C.sub.4 thioalkyl; NR.sub.3 R.sub.4 ; --R.sub.5 --A --R.sub.6 ; and --A--R.sub.7 ; CN; SO.sub.2 R.sub.8 ; --NHCONH.sub.2 ; and C(O)NR.sub.3 R.sub.4 ;each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is independently selected from the group consisting of hydrogen and C.sub.1 -C.sub.4 alkyl;each of R.sub.5 and R.sub.6 is independently a C.sub.1 -C.sub.6 alkyl;R.sub.7 is selected from the group consisting of H, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: June 14, 1994
    Assignee: Trustees of the University of Pennsylvania
    Inventor: Hank F. Kung
  • Patent number: 5318797
    Abstract: Spherical particles include a core of a polymer and a metal compound covering the polymer core. These particles may be formed by homogeneously dispersing particles of a polymeric compound in an aqueous solution of a hydrolyzable metal salt to form a uniform metal layer around the spherical particles. The spherical particles can also include a core of carbon and a metal compound covering the carbon core or the particles can have a hollow core prepared by heating spherical polymer particles coated with a metal compound to a temperature of 150.degree. C. or higher in the presence of oxygen to completely decompose the polymeric compound. These spherical particles are useful in electronic materials, magnetic materials and the like.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: June 7, 1994
    Assignees: Clarkson University, Japan Synthetic Rubber Co., Ltd.
    Inventors: Egon Matijevic, Nobuo Kawahashi
  • Patent number: 5316696
    Abstract: A composition comprises a poly(oxyalkylene)glycol derivative and a long chain anhydride and optionally a hydroxy-oxime. The long chain anhydride can be an alk(en)yl succinic anhydride in which the alk(en)yl group contains at least six carbon atoms. The optional hydroxy-oxime can be an alkyl-substituted benzaldoxime. The composition has improved corrosion resistance and can provide protection of a metal even in the form of a thin film.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: May 31, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventor: Bernard Tury
  • Patent number: 5316693
    Abstract: A liquid crystal composition comprising 5 to 99% by weight of a liquid-crystalline copolymer, which has both an alkyl chain and a siloxane chain in its main chain, and 1 to 95% by weight of a low molecular weight liquid-crystalline compound operates at a wide range of temperatures including room temperature, has an excellent film formability, is easy to orient to a high degree by mechanical orientation methods including bending orientation method and responds to the change of electric field at a high speed.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: May 31, 1994
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kimihiro Yuasa, Motohisa Ido, Ryusuke Watanabe
  • Patent number: 5314678
    Abstract: The present invention relates to radiopharmaceutical products used in the treatment of thyroid diseases. In particular, the present invention relates to sodium iodide .sup.131 I capsules which have increased stability and lower volatility.The objects of the present invention are achieved by providing a .sup.131 I capsule having a matrix material and antioxidant additive combination which provides for increased stability and reduced volatility of the capsule.
    Type: Grant
    Filed: January 28, 1992
    Date of Patent: May 24, 1994
    Assignee: Mallinckrodt Medical, Inc.
    Inventors: Glenn D. Grummon, David E. Helling
  • Patent number: 5314640
    Abstract: A tolan derivative suitable for use in a liquid crystal composition represented by the general formula: ##STR1## wherein R is a straight chain alkyl group having from 1 to 10 carbon atoms, A is either ##STR2## or a single bond, and X is hydrogen or fluorine.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: May 24, 1994
    Assignee: Seiko Epson Corporation
    Inventor: Shuhei Yamada
  • Patent number: 5314642
    Abstract: An interaction system, including an antibody or, antibody fragment having functional capability, which comprises a surfactant-stabilized microheterogeneous dispersion of aqueous phase in a water-immiscible medium, said aqueous phase containing an amount of said antibody or said fragment in a functional state sufficient to effect the interaction; and methods for making and for using said system.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: May 24, 1994
    Assignee: IGEN, Inc.
    Inventors: Charles N. Durfor, Richard J. Bolin, Allen R. Schantz, II, Richard J. Massey
  • Patent number: 5314643
    Abstract: A process for the inhibition of corrosion caused by naphthenic acid and sulfur compounds during the elevated temperature processing of crude oil by use of a corrosion inhibitor consisting of trialkylphosphate and an alkaline earth metal phosphonate-phenate sulfide.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: May 24, 1994
    Assignee: Betz Laboratories, Inc.
    Inventors: James G. Edmondson, S. Blake Pruett
  • Patent number: 5315043
    Abstract: A process for halogen exchange fluorination or fluoro-denitration of aromatic compounds having at least one replaceable non-fluorine halogen or nitro substituent with an anhydrous substantially molten alkali metal acid fluoride composition wherein the alkali metal is potassium, rubidium or cesium.
    Type: Grant
    Filed: February 5, 1992
    Date of Patent: May 24, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard E. Fernandez, Mark H. Krackov