Patents Issued in March 6, 2001
  • Patent number: 6197699
    Abstract: The present invention provides a method for cleaning a contaminated chamber used in the manufacture of semiconductor devices. In one embodiment, the method comprises the steps of injecting, under pressure, a gas mixture of a fluorine-containing gas and an inert gas into the contaminated chamber, radiating the contaminated chamber with a radio frequency during the step of injecting, and removing volatile by-products or solid particulates from the contaminated chamber by performing pump-purge cycles within the contaminated chamber.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: March 6, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Larry B. Fritzinger, Cynthia C. Lee, Edward M. Middlebrook, John M. Sniegowski
  • Patent number: 6197700
    Abstract: A method of fabricating a bottom electrode for a capacitor is described in which a dielectric layer is formed on a substrate already comprising an isolation layer, an etching stop layer and a landing pad. Bit line structures and spacers are further formed on the dielectric layer. A node contact window opening is formed in the dielectric layer, exposing the landing pad, and a conformal first conductive layer is formed on the substrate. After a specially patterned mask layer is formed and the exposed first conductive layer is removed, an extended portion is formed connecting to the conductive layer to complete the fabrication of the columnar bottom electrode for a capacitor.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: March 6, 2001
    Assignee: United Microelectronics Corp.
    Inventors: Chuan-Fu Wang, Jung-Chao Chiou
  • Patent number: 6197701
    Abstract: A method for forming a dielectric layer upon a silicon layer. There is first provided a substrate employed within a microelectronics fabrication. There is then formed over the substrate a silicon layer. There is then formed through use of a first plasma annealing method employing a nitrogen containing plasma annealing atmosphere a silicon nitride containing layer upon a partially consumed silicon layer derived from the silicon layer. There is then oxidized through use of a second thermal annealing method employing an oxidizing material containing atmosphere the silicon nitride containing layer to form an oxidized silicon nitride containing layer upon a further consumed silicon layer derived from the partially consumed silicon layer. The method is particularly useful for forming gate dielectric layers within field effect transistors (FETs).
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: March 6, 2001
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Shau-Lin Shue, Jih-Churng Twu
  • Patent number: 6197702
    Abstract: With a view to preventing the oxidation of a metal film at the time of light oxidation treatment after gate patterning and at the same time to making it possible to control the reproducibility of oxide film formation and homogeneity of oxide film thickness at gate side-wall end portions, in a gate processing step using a poly-metal, a gate electrode is formed by patterning a gate electrode material which has been deposited over a semiconductor wafer 1A having a gate oxide film formed thereon and has a poly-metal structure and then, the principal surface of the semiconductor wafer 1A heated to a predetermined temperature or vicinity thereof is supplied with a hydrogen gas which contains water at a low concentration, the water having been formed from hydrogen and oxygen by a catalytic action, to selectively oxidize the principal surface of the semiconductor wafer 1A, whereby the profile of the side-wall end portions of the gate electrode is improved.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: March 6, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Yoshikazu Tanabe, Isamu Asano, Makoto Yoshida, Naoki Yamamoto, Masayoshi Saito, Nobuyoshi Natsuaki
  • Patent number: 6197703
    Abstract: An ultra-large scale integrated circuit is manufactured by using silicon-based, low dielectric constant materials which are spin-coated, dried, cured, and capped in-situ in chemical vapor deposition equipment. The low dielectric constant material is spun on, processed in chemical vapor deposition equipment, subject to chemical-mechanical polishing, and then processed by a conventional photolithographic process for depositing conductors. The material is then reprocessed for each successive layer of conductor separated by dielectric.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: March 6, 2001
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Lu You, Dawn M. Hopper, Richard J. Huang
  • Patent number: 6197704
    Abstract: There is provided a method of fabricating a semiconductor device having a multi-layered structure and including an interlayer insulating film composed of carbon family material, the method including the steps of (a) depositing an insulating film on a lower wiring layer, the insulating film being composed of carbon family material, (b) annealing the insulating film in hydrogen atmosphere at a first temperature equal to or greater than a temperature at which the insulating film has been deposited, and (c) forming an upper wiring layer on the insulating film. The method suppresses gas from being discharged out of an insulating film without an increase in dielectric constant, and prevents deposited films on the insulating film from being peeled off.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: March 6, 2001
    Assignee: NEC Corporation
    Inventors: Kazuhiko Endo, Keisuke Shinoda
  • Patent number: 6197705
    Abstract: A method for fabricating a silicon oxide and silicon glass layers at low temperature using soft power-optimized Plasma-Activated CVD with a TEOS-ozone-oxygen reaction gas mixture (TEOS O3/O2 PACVD) is described. It combines advantages of both low temperature Plasma-Enhanced Chemical Vapor Deposition (PECVD) and TEOS-ozone Sub-Atmospheric Chemical Vapor Deposition (SACVD) and yields a coating of silicon oxide with stable and high deposition rate, no surface sensitivity, good film properties, conformal step coverage and good gap-fill. Key features of the invention's O3/O2 PACVD process are: a plasma is maintain throughout the entire deposition step in a parallel plate type reactor chamber, the precise RF plasma density, ozone concentration in oxygen and the deposition temperature. These features provide the reaction conditions for the proper O3/O2 reaction mechanism that deposits a conformal silicon oxide layer.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 6, 2001
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventor: Vladislav Vassiliev
  • Patent number: 6197706
    Abstract: Black diamond films, deposited using PECVD at low substrate temperatures, have been effectively stabilized by immersing them in de-ionized water at a temperature of about 90° C. for about 20 minutes or in a hydrogen peroxide solution (typically at a concentration of 10%) for about 60 minutes. Since it has been observed that the dielectric constant of the stabilized film increases with both immersion time and/or peroxide concentration, this effect may be used as a means for adjusting the dielectric constant of a black diamond film. Standard analytical techniques confirm that these low temperature stabilized films have electrical properties that are at least as good as those of films stabilized using high temperature heat treatments.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: March 6, 2001
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Lain-Jang Li, Cheng-Chung Lin, Syun-Ming Jang
  • Patent number: 6197707
    Abstract: An improved bituminized flame-retardant textile material is provided that effectively overcomes bitumin adhesion difficulties associated with products of the prior art wherein the flame-retardant present on the surface of a textile support interfers with and hinders the achievement of bitumin adhesion. An anti-flame agent is applied in a quantity of 20 to 100 grams per square meter over 30 to 90 percent of the upper surface of the textile support. The remaining portions of the upper-surface of the textile support are free of the anti-flame agent. It surprisingly has been found that the surface portions of the textile support that are free of the anti-flame agent provide areas for the achievement of optimum bitumin adhesion with the textile support while still making possible entirely satisfactory flame retardancy for the overall product.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: March 6, 2001
    Assignee: Johns Manville International, Inc.
    Inventors: Bertrand Weiter, Hans-Jürgen Profe, Monika Nagl, Peter Heidel
  • Patent number: 6197708
    Abstract: A dust-removing synthetic resin filter of the present invention comprises a filter material which comprises: synthetic resin fibers; and iron oxide particles having a catalytic activity to chlorine or hydrogen chloride gas. Such a dust-removing synthetic resin filter is capable of so-called clean combustion which is free from discharge of harmful substances upon incineration thereof and is advantageous from the standpoint of preventing environmental pollution.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: March 6, 2001
    Assignee: Toda Kogyo Corporation
    Inventors: Hideto Yoshida, Tomoyuki Imai, Yasuhiko Fujii, Masayuki Okamoto, Takahiro Imano
  • Patent number: 6197709
    Abstract: This invention is directed towards a porous composite having an inlet face and an exit face and further comprises intermingled meltblown fibers and staple fibers which define a density gradient from coarse pores at the inlet face to fine pores at the exit face.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: March 6, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Peter Ping-Yi Tsai, Charles B. Hassenboehler, Larry C. Wadsworth, Gretta Heismeyer
  • Patent number: 6197710
    Abstract: A luminous glass ceramic comprising, in percent by weight, the following components: SiO2  50-65 (%) P2O5   0-10 Al2O3  18-30 Li2O   2-6 MgO 0.2-6 ZnO   0-2 CaO   0-4 BaO 0.5-6 TiO2   1-4 ZrO2   1-4 As2O3 + Sb2O3   0-2 wherein a total amount of SiO2 and P2O5 is 50-70 wt. %, a ratio of P2O5 to SiO2 is 0-0.18, a ratio of Al2O3 to SiO2 is 0.30-0.55, one or more rare earth elements are added to the glass ceramic on an oxide basis of 0.1-30 wt. % to an total amount of other components, Na2O component, K2O component, and PbO component are not essentially contained, and the glass ceramic has a thermal shock resistance |&Dgr;t|° C.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: March 6, 2001
    Assignee: Kabushiki Kaisha Ohara
    Inventors: Kazuo {overscore (O)}hara, Satoru Matsumoto, Naoyuki Goto
  • Patent number: 6197711
    Abstract: An ophthalmic, protective, filter lens, and a method of producing such lens, the lens having a ratio of Z and Y tristimulus values between 0.25-0.40, a dominant wavelength between 570-580 nm. on a color mixture diagram, a sharp transmission drop between 450-500 nm. and a transmission not over 30% between 400-450 nm.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: March 6, 2001
    Assignee: Corning S.A.
    Inventors: Thomas G. Havens, David J. Kerko, Brent M. Wedding
  • Patent number: 6197712
    Abstract: This invention comprises a method for mechanically mixing inorganic phosphors that have long-duration afterglow with soda-lime-silica glasses. The phosphor-glass compositions produced having no significant reduction in phosphorescence. Such compositions may be used to form glass artifacts of arbitrary physical dimensions, thus allowing for a wide variety of phosphorescent commercial glass products to be manufactured.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: March 6, 2001
    Inventor: Chris Odlum
  • Patent number: 6197713
    Abstract: The present invention is directed to a process for the preparation of a gel-free hydrocarbon solution containing a lanthanide rare earth series compound by dissolving or synthesizing a lanthanide compound in an inert hydrocarbon solvent with a Lewis acid in an amount sufficient to prevent formation of highly viscous solutions. The present invention is also directed to the use of the gel-free Ln solutions formed by the recited process as co-catalysts for the polymerization of dienes. The Lewis acid is a group 2, 12, 13, 14 or 15 halide or organohalide, or a transition metal halide, excluding aluminum trialkyls.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: March 6, 2001
    Assignee: Bridgestone Corporation
    Inventor: Thomas J. Lynch
  • Patent number: 6197714
    Abstract: Non-ionic bidentate late transition metal chelates tethered to an inert support by a covalent bond group to provide a catalyst useful in slurry and gas phase polymerization of olefins.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: March 6, 2001
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Eric Francis Connor, Robert Howard Grubbs, Jason Ivan Henderson, Andrew Robert Nadjadi, Jr., Todd Ross Younkin
  • Patent number: 6197715
    Abstract: Non-ionic late transition metal chelates of salicylaldimine and pyrrolaldimine can be tethered to an inert support by a covalent bond to provide a catalyst useful in slurry and gas phase polymerization of olefins.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: March 6, 2001
    Assignee: Cryovac, Inc.
    Inventors: Donald Albert Bansleben, Eric Francis Connor, Robert Howard Grubbs, Jason Ivan Henderson, Andrew Robert Nadjadi, Jr., Todd Ross Younkin
  • Patent number: 6197716
    Abstract: The present invention relates to a hydrogenation process for the production of aromatic halogen-amino compounds by means of catalytic hydrogenation on noble metal catalysts of corresponding aromatic halonitro compounds, characterised in that a rhodium, ruthenium, iridium, platinum or palladium catalyst which is modified with an inorganic or organic phosphorus compound with a degree of oxidation of less than V, is used, in the presence of a vanadium compound.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: March 6, 2001
    Assignee: Novartis AG
    Inventors: Peter Baumeister, Urs Siegrist, Martin Studer
  • Patent number: 6197717
    Abstract: A process and catalyst are provided for dehydrogenating a hydrocarbon feedstock and producing an olefinic product. The process comprises contacting the feedstock at dehydrogenation conditions with a dehydrogenation catalyst comprising from about 0.01 weight percent to about 5.0 weight percent of a platinum group metal, from about 0.02 weight percent to about 10.0 weight percent of zinc, and a support component comprising borosilicate and an alkali metal.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 6, 2001
    Assignee: BP Amoco Corporation
    Inventors: Bruce D. Alexander, George A. Huff, Jr., Mark P. Kaminsky
  • Patent number: 6197718
    Abstract: An improved catalyst activation process for olefinic naphtha hydrodesulfurization. This process maintains the sulfur removal activity of the catalyst while reducing the olefin saturation activity.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: March 6, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Garland B. Brignac, Joseph J. Kociscin, Craig A. McKnight
  • Patent number: 6197719
    Abstract: A process for the activation of perovskite-type oxide by increasing its surface area and/or catalytic activity, which comprises: (i) treating perovskite-type oxide hydrothermally with liquid water with water/perovskite-type oxide ratio of above 0.1 at temperature of 50°-500° C. and period of 0.1-100 h under autogeneous pressure and drying the resulting mass or treating perovskite-type oxide hydrothermally with water vapors with or without any inert gas at space velocity of above 100 h−1, temperature of 200°-1000° C. and a period of 0.1-100 h and (ii) calcining the hydrothermally treated perovskite-type oxide in air or inert gas or under vacuum at temperature of 300°-1000° C. for a period of 0.1-100 h.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: March 6, 2001
    Assignee: Council of Scientific and Industrial Research
    Inventors: Vasant Ramchandra Choudhary, Subhabrata Banerjee
  • Patent number: 6197720
    Abstract: The invention relates to colloidal palladium composed of palladium clusters with an average particle diameter 0.2 nm≦d≦2 nm with at least 80% of the palladium clusters having a particle diameter which differs by not more than 0.2 nm from the average particle diameter d, it being possible for the palladium clusters to have protective ligands on the surface. The invention further relates to a process for preparing a colloidal solution of palladium by reacting a palladium salt with a reducing agent in solution at from 0 to 300° C., employing a branched-chain alcohol as reducing agent and phosphines and/or aromatic nitrogen compounds as protective ligands. The invention further relates to palladium-containing heterogeneous catalysts comprising colloidal palladium applied to a carrier, and to a process for their preparation.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: March 6, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Daniel Heineke, Ekkehard Schwab, Martin Fischer, Guenter Schmid, Monika Baeumle
  • Patent number: 6197721
    Abstract: A novel catalyst for transforming organic compounds is described. The catalyst is composed of a support selected from refractory oxides such as aluminas, silicas, silica-aluminas or magnesia, used alone or as a mixture, a group VIII metal such as palladium, associated or not associated with another metal, said catalyst being such that the volume of chemisorbed carbon monoxide is greater than or equal to 180 cm3 per gram of metal and has a programmed temperature reduction profile comprising a single hydrogen consumption peak.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: March 6, 2001
    Assignee: Institute Francais du Petrole
    Inventors: Blaise Didillon, Denis Uzio, Maryline Delage
  • Patent number: 6197722
    Abstract: The invention relates to an imaging member comprising at least one light insensitive layer substantially free of an oxidant and comprising a catalytic center and multifunctional dye forming coupler. It further relates to a method of imaging comprising providing an imaging member comprising at least one light insensitive layer comprising a catalytic center and multifunctional dye forming coupler, imagewise applying a first developer solution that will react with said multifunctional dye forming coupler, imagewise applying a second developer solution that will react with multifunctional dye forming coupler, wherein said first developer solution and said second developer solution produce different colors.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lyn M. Irving, Richard P. Szajewski
  • Patent number: 6197723
    Abstract: A thermosensitive recording material including a transparent substrate; a thermosensitive recording layer which is formed overlying the substrate and which includes an electron donating coloring agent, an electron accepting color developer and a binder resin; and an overcoat layer which is formed overlying the recording layer and which includes a binder resin which has substantially the same refractive index as the recording material, wherein at least one of the recording layer and a layer adjacent to the recording layer includes a light-heat converting agent and the recording material has transmittance not less than about 10% in a range of from 360 to 420 nm in wavelength. The recording material on which images are recorded is useful for a block copy for flexography, gravure printing, offset printing and screen printing.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: March 6, 2001
    Assignee: Ricoh Company Ltd.
    Inventor: Hiroshi Gotoh
  • Patent number: 6197724
    Abstract: A heat-sensitive recording material in which dispersion stability of a color-developing compound or a film improving compound contained in the heat-sensitive recording material can be improved, and images which have uniform image quality and which are excellent in transparency, glossiness, and light-fastness can be formed with high color-developing sensitivity. There is provided a heat-sensitive recording material comprising a support, a heat-sensitive recording layer which is provided on the support and contains at least two types of compounds which react with each other so as to develop color by heating imagewise, and a protective layer in this order, wherein at least one of the layers contains the compound represented by the following formula (I).
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: March 6, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiaki Aono
  • Patent number: 6197725
    Abstract: There is provided a coupler giving a magenta pigment excellent in hue using a diazonium salt compound which can be fixed at a wavelength around 420 nm.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: March 6, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsuhiro Ohkawa, Hisao Yamada
  • Patent number: 6197726
    Abstract: Secure cards consisting essentially of a card base having an overlying thermally transferred topcoat, with a thermal transfer image in a dye-receptive surface of the card base and the topcoat typically of a polymethyl methacrylate composition, frequently show severe image fading after relative short periods of time when kept and carried in normal PVC pouches. To improve protection against such fading, the present topcoat comprises at least one barrier layer which is formed of a polymer composition having a Tg>70° C., and which is resistant to the formation of microscopic cracks in the topcoat under tensile bending that is insufficient to cause macroscopic permanent deformation.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: March 6, 2001
    Assignee: Imperial Chemical Industries PLC
    Inventors: Kelvin P Adkins, Richard A Hann, Gary J Jenno
  • Patent number: 6197727
    Abstract: The present invention provides herbicide compositions for foliar treatment each containing as active ingredients, a 2-chloro-4-fluoro-5-(4methyl-5-trifluoromethyl-3-pyridazinon-2-chloro-2-yl)phenyl C1-C5 non-cyclic hydrocarbyl ether and one selected from the group consisting of (RS)-2-(4-chloro-2methylphenoxy)propionic acid, 2,4-dichlorophenoxyacetic acid, (4-chloro-2-methyl)phenoxyacetic acid, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino]carbonyl]amino]sulfonyl] benzoate, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide, ethyl (R)-2-[4(6-chloro-1 3-benzoxazol-2-yloxy)phenoxy]propanoate, methyl (RS)-2-[4-(2,4-dichlorophenoxy)phenoxy]propionate, 3,5-dibromo-4-hydroxybenzonitrile, 4-hydroxy-3,5-diiodobenzonitrile, 3-(4-isopropylphenyl)-N′, N′-dimethylurea, N′-(3-chloro-4-methylphenyl)-N,N-dimethylurea and N-(2,4-difluorophenyl)-2-[3-(trifluoromethyl)phenoxy]-3-p
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: March 6, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Hisayuki Hoshi
  • Patent number: 6197728
    Abstract: Quinoxaline derivatives having the formula I wherein X represents a halogen atom; R represents —COR1, —CH═CH—COOR2(R2 represents a C1-C4 alkyl group); —CN or —CH2OH, and R1 represents —S—R3 (R3 represents a C1-C4 alkyl or alkenyl group or phenyl or chlorophenyl group), —NH—R4 (R4 represents a C1-C4 alkoxy carbonylalkyl group, hydroxy alkyl group, phenyl group, C1-C4 alkoxy alkyl group or di C1-C4 alkyl amino group) are remarkably effective as selective herbicides.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: March 6, 2001
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Yasukazu Ura, Gozyo Sakata, Kenzi Makino, Yasuo Kawamura, Y{overscore (u)}zi Kawamura, Takasi Ikai, Tosihiko Oguti
  • Patent number: 6197729
    Abstract: Compounds of formula I where R1 is hydrogen, chlorine, fluorine or methyl, R2 and R3, which may be the same or different from each other, are hydrogen, halogen, cyano, (C1-C4)-alkyl, vinyl, ethynyl, (C1-C4)-alkoxy, (C1-C4)-alkoxy-(C1-C4)-alkyl, fluorovinyl or fluoroethyl, or R2 and R3 together with the linking carbon atoms form a benzo ring, and R4 is (C2-C4)-alkyl, (C2-C4)-alkenyl or (C3-C4)-alkinyl, each of which is substituted by at least two fluorine atoms and optionally substituted by C1-4-alkoxy, cyanomethoxy, (C3-C4)-alkenyloxy or (C3-C4)-alkinyloxy, are useful as pesticides, especially against insects, acarids and fungi. The invention includes a novel process for fluorinating certain pyrimidines.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: March 6, 2001
    Assignee: Hoechst Schering Agrevo
    Inventors: Martin Märkl, Wolfgang Schaper, Oswald Ort, Harald Jakobi, Ralf Braun, Gerhard Krautstrunk, Ulrich Sanft, Werner Bonin, Herbert Stark, Sergej Pasenok, Ivan Cabrera
  • Patent number: 6197730
    Abstract: A method of fracturing a subterranean formation which surrounds a well bore comprises the steps of providing a fracturing fluid, and injecting the fracturing fluid into the well bore at a pressure sufficient to form fractures in the subterranean formation which surrounds the well bore. The pressure is then released from the fracturing fluid, after which the fluid may be removed from the well and the well placed into production. The fracturing fluid comprises an aqueous liquid, a polysaccharide soluble or dispersible in the aqueous liquid in an amount sufficient to increase the viscosity of the aqueous liquid, an enzyme breaker which degrades the polysaccharide at a temperature above 180° F. Fracturing fluid compositions and enzyme breaker systems useful for carrying out the invention are also disclosed.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: March 6, 2001
    Assignees: North Carolina State University, The Trustees of Princeton University
    Inventors: Robert M. Kelly, Saad A. Khan, Pascal Leduc, Akash Tayal, Robert K. Prud'homme
  • Patent number: 6197731
    Abstract: Ester base stocks for two-cycle gasoline engine lubricant compositions are disclosed which produce lower amounts of observable smoke in the exhaust emitted as a result of combustion in a two-cycle gasoline engine, require no miscibility-enhancing solvents, have a viscosity of 3.0 cSt to 20.0 cSt at 100° C. and a smoke index of at least 75. Some of the esters are biodegradable.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: March 6, 2001
    Assignee: Henkel Corporation
    Inventors: Eugene R. Zehler, Bruce J. Beimesch
  • Patent number: 6197732
    Abstract: A composition comprising: an organic chemical having a chemical group having a dipole moment of at least about 1.5 Debyes and a chemical linker selected from the group consisting of carboxylic acids having 4 to 6 carbon atoms, an ethoxylated polyhydric alcohol, a polyvinyl pyrrolidone and a polyethylene glycol having a molecular weight of about 600 to about 10,000, wherein the molar ratio of organic chemical to chemical linker is about 4:1 to 1:4.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: March 6, 2001
    Assignee: Colgate-Palmolive Co.
    Inventors: Michele Davister, Guy Broze, Patrick Durbut, Hoai-Chau Cao, Thomas Connors, John Labows, Anne-Marie Misselyn
  • Patent number: 6197733
    Abstract: A photoresist ashing residue cleaning agent used after the ashing of the photoresist in the production of a semiconductor circuit pattern. The photoresist ashing residue cleaning agent comprises an aqueous solution containing: a) an ammonium fluoride compound; and b) an amphoteric surfactant of which the cationic group is an ammonium salt and of which the anionic group is a carboxylate.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: March 6, 2001
    Assignee: Tokuyama Corporation
    Inventors: Ichiro Mikami, Yoshifumi Yamashita, Toru Nonaka
  • Patent number: 6197734
    Abstract: A high wax content heavy oil remover comprises dipropylene glycol mono n-butyl ether, ethoxylated alkyl mercaptan, salt of an alkyl aromatic sulfonic acid, branched alcohol ethoxylate, d-limonene, and white oil.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: March 6, 2001
    Assignee: Dotolo Research Ltd.
    Inventor: Jack T. Vlasblom
  • Patent number: 6197735
    Abstract: A light duty, liquid comprising: a paraffin sulfonate, an alpha olefin sulfonate, an ethoxylated alkyl ether sulfate, an ethoxylated nonionice surfactant, a magnesium containing inorganic compound, and water.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: March 6, 2001
    Assignee: Colgate-Palmolive Co.
    Inventors: Rita Erilli, Chantal Gallant
  • Patent number: 6197736
    Abstract: An improved alkaline cleaning solution that has the ability to descale, derust, and completely dissolve machining lubricants coated on steel and other iron alloy objects, the alkaline cleaning solution consisting essentially of: (a) water; (b) about 10% to 95% by volume of a water-soluble descaling and derusting agent; and (c) about 2% to 8% by weight of a water-soluble sequestering agent selected from the group consisting of sodium gluconate and its functional equivalents.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: March 6, 2001
    Assignee: The Boeing Company
    Inventor: Cathleen H. Chang
  • Patent number: 6197737
    Abstract: Laundry detergents and bleaching systems which comprise substituted benzoyl caprolactam bleach activators are presented. The bleach activators are effective under mixed soil conditions, especially mixtures of hydrophobic and hydrophilic soils and stains.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 6, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Alan David Willey, Michael Eugene Burns
  • Patent number: 6197738
    Abstract: A nontoxic sanitizing cleaner comprising an organic acid having a pH less than 3, a chelating agent, and a surfactant. The invention also contemplates a buffering agent in the cleaner. In a preferred embodiment, the sanitizing cleanser is in the form of a solution containing 94% citric acid, 4% EDTA, 1% sodium laurel sulfate, and 1% monosodium phosphate, by weight. The invention also contemplates using the nontoxic sanitizing cleaner in a cosmetic lotion, and in processes for cleaning and sanitizing food processing equipment.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: March 6, 2001
    Inventor: Robert R. Regutti
  • Patent number: 6197739
    Abstract: Compositions for use as soil removing agents in the food processing industry are disclosed. Food soiled surfaces in food manufacturing and preparation areas can be cleaned. The compositions are manufactured in the form of a concentrate which is diluted with water and used. The cleaning materials are made in a two part system which are diluted with a diluent source and mixed prior to use. The products contain high quality cleaning compositions and use a variety of active ingredients. The preferred materials, in a two part system contain detergent compositions, enzymes that degrade food compositions, surfactants, low alkaline builders, water conditioning (softening) agents, and optionally a variety of formulary adjuvants depending on product form.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: March 6, 2001
    Assignee: Ecolab Inc.
    Inventors: Thomas R. Oakes, Kristine K. Wick, Bruce R. Cords, Sandra L. Bull, Francis L. Richter
  • Patent number: 6197740
    Abstract: The present invention provides a detergent composition which is excellent in enzyme stability and exhibits excellent detergency particularly to protein-related dirt of socks and other items even under laundering conditions at a lower temperature. That is, the present invention provides a detergent composition comprising specific proportions of (a) an anionic surfactant, (b) a chlorine scavenger, (c) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is not less than 0.09×10−3 &mgr;g/mPU·min and (d) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is less than 0.09×10−3 &mgr;g/mPU·min.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: March 6, 2001
    Assignee: Kao Corporation
    Inventors: Shitsuw Shikata, Masafumi Nomura, Toshihiro Oki, Hitoshi Tanimoto, Tsutomu Tokumoto, Nobuyuki Ogura
  • Patent number: 6197741
    Abstract: A composition comprising: an organic chemical having a chemical group having a dipole moment of at least about 1.5 Debyes and a chemical linker selected from the group consisting of carboxylic acids having 4 to 6 carbon atoms, an ethoxylated polyhydric alcohol, a polyvinyl pyrrolidone and a polyethylene glycol having a molecular weight of about 600 to about 10,000, wherein the molar ratio of organic chemical to chemical linker is about 4:1 to 1:4.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: March 6, 2001
    Assignee: Colgate-Palmolive Company
    Inventors: Michele Davister, Guy Broze, Patrick Durbut, Hoai-Chau Cao, Thomas Connors, John Labows, Anne-Marie Misselyn
  • Patent number: 6197742
    Abstract: A method for increasing surface deposition of silicone from soap and improving processing characteristics of soap and a corresponding composition are disclosed. The composition includes a fatty alkyl silicone, a fatty silicate ester, a high viscosity lower alkyl silicone fluid, a silicone surfactant, and an organic surfactant. The organic surfactant is one or more of a nonionic, cationic or anionic surfactant, a fatly ester sulfonate, sorbitan monostearate, and sodium lauryl sulfate.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: March 6, 2001
    Assignee: General Electric Company
    Inventors: K. N. Ramachandran, G. Sudesh Kumar
  • Patent number: 6197743
    Abstract: This invention relates to compositions and methods for the treatment of virus infections and other viral-associated disorders. Compositions comprise an inducing agent and an anti-viral agent. The inducing agent induces the expression of a cellular or viral product, such as viral thymidine kinase, increasing the sensitivity of proliferating cells to the anti-viral agent. Typical anti-viral agents are nucleoside analogs such as ganciclovir that inhibit viral replication. Methods involve administration of therapeutically effective amounts of the inducing agent with the anti-viral agent to destroy virus-infected cells. Viral infections that can be treated include infections by herpes viruses such as Kaposi's-associated herpes virus and Epstein-Barr virus, HIV infections and HTLV infections. These compositions and methods are particularly effective against episomal and latent infections in proliferating cells.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: March 6, 2001
    Assignee: The Trustees of Boston University
    Inventor: Douglas V. Faller
  • Patent number: 6197744
    Abstract: A specific, unique, natural biological factor that has the capacity to abate one or more of the toxic effects of TNF. This factor may have therapeutic potential in one or more of the diverse disease states in which TNF is known to have a causative role. The unique, approximately 27 kDa protein is designated TIP-B1. TIP-B1, when purified and added back to TNF sensitive cells, effectively ablates TNF-induced cell lysis and TNF-induced apoptosis; cytolytic effects are central to many TNF-mediated actions. The invention includes a protein designated TIP-B1 purified to homogeneity. The protein has a molecular weight of about 27 kD. The protein is capable of inhibiting the action of TNF upon a cell, when said protein is introduced into extracellular medium surrounding the cell. The protein is free of sequences which interfere with normal cellular TNF binding sites and is free of sequences which directly bind to TNF.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: March 6, 2001
    Assignee: Health Research, Inc.
    Inventors: Erica Berleth, M. Jane Ehrke, Srikanth S. Nadadur, Hira Gurtoo, Alicia Henn, Enrico Mihich
  • Patent number: 6197745
    Abstract: S-nitrosothiols (RSNOs) can donate the NO group to the &bgr;93 cysteine residues of hemoglobin (Hb) without inactivating the heme. S-nitrosylation of Hb is under the allosteric control of oxygen and the oxidation state of heme. NO group release from S-nitrosohemoglobin (SNO-Hb) is further facilitated by intracellular low molecular weight thiols, forming RSNOs which can be exported from the erythrocyte to regulate blood pressure and platelet activation. SNO-Hb can be formed by reaction of Hb with S-nitrosothiol. This procedure avoids oxidation of the heme. Other methods can be used which are not specific only for thiol groups, but which nitrosate Hb more extensively, and may produce polynitrosated metHb as a product or intermediate product of the method.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: March 6, 2001
    Assignee: Duke University
    Inventor: Jonathan S. Stamler
  • Patent number: 6197746
    Abstract: Secretin and secretin compositions are used for the treatment of autism and other neurological, behavioral and immunological disorders. The method includes administering an effective amount of secretin, such as Secretin-Ferring, to a patient. In one example, 2 clinical units (CU) of Secretin-Ferring was dissolved in a 7.5 ml solution of sodium chloride and was intravenously injected over 1 minute. In another example, secretin was administered transdermally by applying dimethyl sulfoxide (DMSO) to the patients skin and rubbing about 15 CU of Secretin-Ferring into the DMSO. Other methods and compositions for administering the effective amount of secretin include other transdermal carrier substances, such as gels, lotions, or patches; oral carriers, such as tablets, capsules, or lozenges; inhalation through the nose or mouth (e.g., as an aerosol); suppository forms of secretin and secretin compositions; and using acoustic waves to cause the secretin to penetrate the skin.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: March 6, 2001
    Assignee: Repligen Corporation
    Inventors: Victoria Beck, Bernard Rimland
  • Patent number: 6197747
    Abstract: The invention relates to genetically engineered plant-colonizing microorganisms which proliferate in symbiotic or non-detrimental relationships with the plant in the plant environment. Such microorganisms contain DNA derived from Bacillus thuringiensis which codes for the insecticidal crystal protein toxin. The engineered plant-colonizing microorganisms of the invention and their progency are active against a variety of lepidopterous pests. The invention further relates to the use of such plant-colonizing microorganisms in a method of killing or inhibiting lepidopterous pests and to insecticidal compositions containing the plant-colonizing microorganism as the active insecticidal agent.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: March 6, 2001
    Assignee: Monsanto Company
    Inventors: Lidia S. Watrud, Frederick J. Perlak
  • Patent number: 6197748
    Abstract: Ketoheterocyclic compounds, their salts and compositions related thereto having activity against mammalian factor Xa are disclosed. The compounds are usefull in vitro or in vivo for preventing or treating coagulation disorders.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: March 6, 2001
    Assignee: COR Therapeutics, Inc.
    Inventors: Robert M. Scarborough, Charles K. Marlowe, Bing-Yan Zhu