Patents Examined by Amy M. Harding
  • Patent number: 5873934
    Abstract: A surface-treating agent for use in an inorganic pigment in which a metallic oxide layer and/or a hydrated metallic oxide layer is formed on the surface of said pigment, characterized in that said surface-treating agent contains one or more compounds selected from the group consisting of (1) a polyglycidyl ether compound, (2) a polyglycidyl ester compound, and (3) a diglycidyl polysiloxane compound.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: February 23, 1999
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Koshiro Kunii, Yoshifumi Horie
  • Patent number: 5851950
    Abstract: A method of treating a gaseous stream containing one or more volatile nitrogen containing organic compounds which comprises contacting the gaseous stream and an oxidizing agent with a catalyst at relatively low temperatures to cause oxidation of the volatile nitrogen-containing organic compounds. The catalyst employed promotes the oxidation reaction to selectively produce N.sub.2 O, N.sub.2, CO.sub.2 and H.sub.2 O without generating significant amounts of NO.sub.x to permit the reaction products to be vented directly into the atmosphere. The catalyst includes a selected amount of a noble or base metal deposited on a catalyst support comprising titania and zirconia. One or more of the elements molybdenum, tungsten or vanadium are added as promoters to the composition which minimizes the generation of NO.sub.x among the reaction products. Lanthanum may be added to provide better thermal stability and increase the selectivity for producing N.sub.2 among the reaction products.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: December 22, 1998
    Assignee: Guild Associates, Inc.
    Inventors: Joseph A. Rossin, Jeffrey M. Campbell
  • Patent number: 5785941
    Abstract: A process for preparing finely divided silica by reaction of gaseous or vaporizable silicon compounds in a mixture with gases forming water on combustion with air or oxygen in a flame includes producing discharges of gas in the combustion chamber by means of at least one gas gun. The apparatus for carrying out this process has applied to the outside of the combustion chamber wall at least one gas gun which produces a discharge of gas via an opening in the combustion chamber wall, preferably in conjunction with a nozzle on the inside of the combustion chamber wall.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 28, 1998
    Inventors: Helmut Maginot, Johann Huber
  • Patent number: 5750823
    Abstract: A waste gas stream including halohydrocarbons is treated with a surface wave to form a cold plasma. Additional reaction gases can be mixed with the waste gas stream to improve the destruction of the halohydrocarbons. The apparatus for the treatment of gaseous halogenated organic and other persistent organic compounds includes a reaction vessel (12) in which the waste gas is exposed to the surface wave, thereby forming a non-thermal plasma. The apparatus further includes a means for mixing (7) the waste gases together with the appropriate ancillary reaction gases to facilitate formation of free radicals suited to treat a particular waste stream. Also, a means of introducing an appropriate mixture of waste gases and additive gases into the plasma reaction vessel where the halohydrocarbons are decomposed is provided. Since some reactions may produce solid material by-products that are not easily handled by suction pumps a means of trapping (13) these particles may be included in this apparatus.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: May 12, 1998
    Assignee: R.F. Environmental Systems, Inc.
    Inventors: Bill Wofford, Marc Jackson, John Bevan
  • Patent number: 5736112
    Abstract: Molybdenum oxides are recovered from an organic solvent solution of organic molybdenum compounds by adding the organic solvent solution to water and reacting the organic molybdenum compounds therein with oxygen under pressure to convert the organic components of the organic molybdenum compounds to carbon dioxide and water and to convert the molybdenum components to molybdenum oxides, and to form an aqueous solution of molybdenum oxides from which the molybdenum oxides can be recovered.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: April 7, 1998
    Assignee: Huntsman Specialty Chemicals Corporation
    Inventor: William Allen Smith
  • Patent number: 5733517
    Abstract: A wet, calcium-based flue gas desulfurization process conducted under inhibited oxidation conditions and in the presence of at least one organic acid which both enhances the efficiency of sulfur dioxide removal and modifies the crystal habit of calcium sulfite crystals to produce large, thick, regular, easily dewatered calcium sulfite hemihydrate byproduct solids is provided. The addition of an organic acid, preferably a carboxylic acid, to the flue gas desulfurization process produces calcium sulfite crystals that closely resemble calcium sulfate or gypsum crystals in settling and dewatering properties.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: March 31, 1998
    Assignee: Electric Power Research Institute
    Inventors: David R. Owens, Robert E. Moser, Gordon Maller
  • Patent number: 5720931
    Abstract: A method of treating a gaseous stream containing one or more volatile nitrogen-containing organic compounds which comprises contacting the gaseous stream and an oxidizing agent with a catalyst at relatively low temperatures to cause oxidation of the volatile nitrogen-containing organic compounds. The catalyst employed promotes the oxidation reaction to selectively produce N.sub.2 O, N.sub.2, CO.sub.2 and H.sub.2 O without generating significant amounts of NO.sub.x to permit the reaction products to be vented directly into the atmosphere. The catalyst includes a selected amount of a noble or base metal deposited on a catalyst support comprising titania or zirconia. One or more of the elements molybdenum, tungsten or vanadium are added as promoters to the composition which minimizes the generation of NO.sub.x among the reaction products. Lanthanum may be added to provide better thermal stability and increase the selectivity for producing N.sub.2 among the reaction products.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: February 24, 1998
    Assignee: Guild Associates, Inc.
    Inventors: Joseph A. Rossin, Jeffrey M. Campbell
  • Patent number: 5709734
    Abstract: To dispose of halogenated hydrocarbons one uses a solid sorbent containing an iron oxide and/or iron oxyhydroxide.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: January 20, 1998
    Assignee: CS-GmbH Halbleiter- und Solartechnologie
    Inventors: Christoph Scholz, Walter Holzinger, Robert Schloegl
  • Patent number: 5704962
    Abstract: Compositions for the treatment of granular fertilizers containing secondary C.sub.14 -C.sub.20 dialkyl monoamines or their mixture with primary monoamines which are also C.sub.14 -C.sub.20 have the advantage of limiting both the solidification and the secondary production of dust on storage. The process is particularly advantageous in the treatment of NPK-type fertilizers.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: January 6, 1998
    Assignee: Ceca S. A.
    Inventor: Luc Navascues
  • Patent number: 5702519
    Abstract: A flaky substrate which is characterized by a uniform small thickness, a smooth nearly colorless surface, a large aspect ratio, and a very little tendency toward crystal twinning and aggregation, is composed of aluminum oxide and titanium oxide. The flaky substrate is used to prepare an excellent pearlescent pigment.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: December 30, 1997
    Assignee: Merck Patent Gesellschaft mit ceschrankter Haftung
    Inventors: Katuhisa Nitta, Tan Ming Shau, Jun Sugahara
  • Patent number: 5700747
    Abstract: An object is to elevate the NOx cleaning rate and heat resistance of an exhaust gas cleaning catalyst complex which comprises a noble metal catalyst supported on zeolite. Ni is supported in the form of NiO powder on said zeolite. Said NiO acts as a cocatalyst without the coverage of the activation site of the catalyst complex and closure of the gas passage by said NiO so as to elevate the NOx cleaning rate and heat resistance.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: December 23, 1997
    Assignee: Mazda Motor Corporation
    Inventors: Makoto Kyogoku, Hideharu Iwakuni, Akihide Takami
  • Patent number: 5700315
    Abstract: An anti-outgassing ink composition and method for using the same. The ink composition consists of an ink vehicle, a coloring agent, and an anti-outgassing additive. The additive prevents the outgassing of dissolved gases from the ink composition (e.g. in the form of gas bubbles) at temperatures generated within thermal printers (about 25.degree.-80.degree. C.). The additive accomplishes this goal by increasing the solubility of the gas in the ink composition. As a result, the continuous and uninterrupted flow of ink from the ink delivery system is achieved. A preferred additive consists of ethoxylated glycerol. The additive is used in an amount sufficient to control bubble formation. A typical ink composition will contain about 2-12% by weight additive. Use of the ink composition provides numerous benefits which are achieved without physical modifications to the printing hardware.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 23, 1997
    Assignee: Hewlett-Packard Company
    Inventor: Donald E. Wenzel
  • Patent number: 5698018
    Abstract: A method of transferring a pigmented image, comprising the steps of:providing a donor element bearing an inkjet printed image containing one or more heat transferable pigments selected from the group consisting ofA. 2-(N-methylcarbamyl)-4-(4-N,N-di-ethylamino-phenylimino)-1,4-naphthoquinon e;B. 2-(N-methylcarbamyl)-4-(4-N,N-di-ethylamino-2-methylphenylimino)-1,4-napht hoquinone;C. 1-phenyl-3-N,N-dimethylamino-4-(4-N,N-diethylaminobenzylidene)-pyrazoline- 5-one;D. N-ethyl-N-benzyl-3-acetamido-4-(3-methyl-4-cyanoisothiazol-5-ylazo)-anilin e;E. N-(2-((2,6-dicyano-4-methylphenyl)azo)-5-(diethylamino)phenyl}methanesulfo namide;F. N-(2-((2,6-dicyano-4-methylphenyl)azo)-5-(dipropylamino)phenyl}methanesulf onamide; andcontacting the donor element with an image receiving element; andtransferring the heat transferable image to the image receiving element by applying heat to the donor element.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: John F. Bishop, Michael J. Simons, Mary C. Brick
  • Patent number: 5698024
    Abstract: This invention relates to pigment compositions comprising an organic pigment treated with about 0.1 to about 20% by weight, based on the organic pigment, of a compound having the formula (I) ##STR1## wherein Q represents an organic pigment moiety,X is O or S,Het represents a heteroaromatic group attached at a ring carbon atom to the (thio)amidomethyl --CH.sub.2 --NH--CX-- linking group, andn is from 1 to 4.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: December 16, 1997
    Assignee: Bayer Corporation
    Inventors: Ibraheem T. Badejo, Daphne J. Rice
  • Patent number: 5695730
    Abstract: The present invention provides silicic acid hydrate having a large pore volume and tiny particle diameters, and a process for preparing it. There is disclosed silicic acid hydrate obtained by neutralizing an aqueous solution of sodium silicate with a mineral acid, which has particle properties represented by an oil absorption of 250 to 350 ml/100 g, a total pore volume of 4.0 to 6.0 cc/g, an average pore radius of 200 to 400 .ANG., and an average pore diameter of 3.0 to 15 .mu.m by the laser method, or 2.0 to 4.0 .mu.m by the coulter method, or 0.5 to 3.5 .mu.m by the centrifugal precipitation method.
    Type: Grant
    Filed: September 20, 1995
    Date of Patent: December 9, 1997
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Kuniaki Maejima, Shigeki Yamagata, Tomohiro Banda, Masaru Kishida, Keiji Monbetsu, Tsutomu Naito
  • Patent number: 5693119
    Abstract: A method for providing a P buffer fertilizer to plants growing in soilless media has been developed. Plants are provided with phosphorus (P) fixed to alumina (Al) in a concentration ranging from 0.25-16% by volume as a solid-phase P buffer for sustained release of P. The resulting plants show increased root growth and resistance to transplant stress. The invention has the further benefit that it virtually eliminate P leaching from the growing media. The fertilizer can be applied to containerized plants, crops, grass or other plants requiring P for growth. The invention is particular useful for greenhouse plants, vegetable and bedding transplants, stadium fields and golf courses where P leaching from the growing media is undesirable. The invention is particularly useful for transplants because it affords increased root growth which increases the probability of transplant success.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: December 2, 1997
    Assignee: The Penn State Research Foundation
    Inventors: Jonathan P. Lynch, E. Jay Holcomb
  • Patent number: 5693304
    Abstract: A particulate amorphous alkali metal silicate is prepared by heating a mixture of silicate glass and water or aqueous solution to a temperature of about 300.degree.-400.degree. C. to provide a foamed material that is easily formed into particles of less than 20 microns. After careful hydration, a product having 1-15% water based on loss of ignition (LOI) of product at 800.degree. C. is produced that controls the activity of magnesium in solutions and is, therefore, a useful detergent ingredient.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: December 2, 1997
    Assignee: PQ Corporation
    Inventors: Eric von Rehren Borgstedt, Raymond P. Denkewicz, Jr.
  • Patent number: 5693302
    Abstract: A process for the substantial removal of at least one of the carbon monoxide and hydrogen impurities contained in a composite gas, according to which:(a) at least one of the carbon monoxide and hydrogen impurities contained in the composite gas are reacted with oxygen, in contact with a catalyst comprising particles of at least one metal chosen from the group consisting of gold and palladium, these particles being supported by titanium dioxide, in order respectively to form carbon dioxide and water;(b) optionally, the carbon dioxide and the water formed are removed from the composite gas;(c) the composite gas, substantially free of its carbon monoxide and/or hydrogen impurities, is recovered.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: December 2, 1997
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
    Inventor: Daniel Gary
  • Patent number: 5690898
    Abstract: A method for treating a gaseous effluent from a supercritical water oxidation reactor containing entrained solids is provided comprising the steps of expanding the gas/solids effluent from a first to a second lower pressure at a temperature at which no liquid condenses; separating the solids from the gas effluent; neutralizing the effluent to remove any acid gases; condensing the effluent; and retaining the purified effluent to the supercritical water oxidation reactor.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: November 25, 1997
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles M. Barnes, Carolyn Shapiro
  • Patent number: 5688482
    Abstract: A temperature-activated polysilicic acid is prepared by heating an acidified aqueous alkali metal silicate. The temperature-activated polysilicic acid is used in the production of paper for improvement of retention and water removal.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: November 18, 1997
    Assignee: J. M. Huber Corporation
    Inventor: Sakari Saastamoinen