Patents Assigned to E
  • Patent number: 6372108
    Abstract: Novel alkaline polymeric binders, preferably amino epoxy binders, for use in cathodic electrodeposition coatings have a number average molecular mass of 1000 to 3000, an amine value of 150 to 250 mg KOH/g binder and 50 to 230 milliequivalents/100 g binder of beta-hydroxyalkyl urethane groups of the formula HOCnH2nOC(O)NH— where n=2 to 3, as well as processes for making such binders; aqueous compositions, particularly cathodic electrodeposition compositions containing such binders (which provide improved throwing power); and process of using such compositions, particularly on automotive bodies and parts thereof, are disclosed.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Helmut Hoenig, Roland Feola, Johann Gmoser, Robert Thausz
  • Patent number: 6374022
    Abstract: A device for limiting the bending of a cable includes a body made of polymeric material for housing a portion of the cable connected to a joining element and includes at least two rigid elements incorporated in the body and defining spacing elements in the radial direction for the portion of cable, these rigid elements having a substantially annular shape and different diameters and being mechanically independent of one another.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: April 16, 2002
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Bruno Parmigiani, Angelo Sala
  • Patent number: 6372344
    Abstract: A cable, in particular for power transmission, for telecommunications or for data transmission, or also combined power/telecommunications cables, wherein at least one coating layer is comprised of a recyclable material which is halogen-free and has superior mechanical and electrical properties. This material comprises a polymer mixture of a crystalline propylene homopolymer or copolymer and an elastomeric copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally containing a diene. The copolymer is characterized by a 200% tension set value of lower than 30% (measured at 20° C. for 1 minute according to ASTM standard D 412). The cable also includes a flame-retardant polymer composition.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 16, 2002
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Luca Castellani, Eduardo Grizante Redondo, Antonio Zaopo, Enrico Albizzati
  • Patent number: 6371394
    Abstract: Method for winding a fiber element onto a support. The fiber element having at least two longitudinal portions (Pi) with different characteristics. The method including the steps of supplying the fiber element to the support and associating with each longitudinal portion a respective value of the winding pitch (pi) which is different from the values associated with the portions adjacent thereto. The winding pitch associated with each portion being modulated in accordance with a periodic function.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: April 16, 2002
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventor: Giacomo Stefano Roba
  • Patent number: 6372352
    Abstract: A laminar structure comprised of at least one layer of glass and a sheet of plasticized PVB containing an adhesion control agent is provided wherein delamination resulting from air being from air being dispersed or entrapped and dissolved in the PVB is controlled by use of a surface energy modifying agent, said surface energy modifying agent being selected to provide a total surface energy for the sheet of less than 52 dynes/cm.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Co.
    Inventors: Ioannis V. Bletsos, John W. Turnbull, Bert C. Wong
  • Patent number: 6371751
    Abstract: Novel spinnerets for producing multi-grooved filaments have a row of apertures connected by slots that correspond to the grooves in the periphery of the resulting filaments.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Arun Pal Aneja, Robert Kenneth Roop
  • Patent number: 6373230
    Abstract: An alternator generates output power at two or more independent voltages. The alternator has two independent output windings configured to generate the power needed for each output. Each output voltage is sensed by a regulator that controls switching rectifiers to supply the current needed to satisfy the electric power demand of the loads connected to each output. After both output load demands are satisfied, the regulator switches off the alternator field. When power demand from either load rises, the alternator field is switched on along with the respective switching rectifier to satisfy the power demand. The output voltage grounds and control signals may be electrically isolated from each other.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: April 16, 2002
    Assignee: C. E. Niehoff & Co.
    Inventor: Issam Jabaji
  • Patent number: 6368725
    Abstract: Process for the preparation of a powder lacquer composition based on polyester by a) common or separate heating to a temperature of 120-200° C. of A) 99-40 wt. % polyester precondensates, and/or of monomers usable for the preparation thereof, B) 1-60 wt. % pigments and C) 0-10 wt. % wetting additives and/or further additives which are conventionally used for lacquers, wherein the percentages by weight total 100%, b) homogeneous mixing of the components A), B) and C) with the application of shear forces and with the heating temperature maintained, c) dispersion of the mixture obtained in a dispersing medium at a temperature equal to or above the melting temperature of the starting components A), B) and C) with further polycondensation of the polyester precondensate A), and/or of the monomers, d) cooling of the dispersion and addition of a conventional cross-linking agent for the polyester and optionally of conventional additives, within the temperature range 60 to 140° C.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Knut Gräf, Hans-Ulrich Simmrock, Alexandra Jacobs, Volker Mörs, Bennett Ward
  • Patent number: 6368989
    Abstract: A puncture resistant footwear sole composite is disclosed with a plurality of layers of woven aramid yarn fabric combined with a matrix resin in an amount adequate to adhere adjacent fabric layers together but not so much that the composite is saturated by matrix resin.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Xuaco Pascual, Constantine William Tsimpris, Marvin Frank Schaffer
  • Patent number: 6369257
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a catalytically active metal (e.g., rhodium or iridium).
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Patrick Michael Burke, Joe Douglas Druliner, Leo Ernest Manzer, Kenneth Gene Moloy, Manxue Wang
  • Patent number: 6369284
    Abstract: A process is disclosed for the manufacture of a pentafluoropropene of the formula: CFX═CYCF3 where X is selected from H and F and where Y is F when X is H and Y is H when X is F. The process involves contacting a hexafluoropropane of the formula: CF2XCHYCF3 at a temperature of from about 200° C. to 500° C. with a catalyst, optionally in the presence of an inert gas. Suitable catalysts include (1) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum; provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, or less (e.g., 1:9), (2) lanthanum fluoride, (3) fluorided lanthanum oxide, (4) activated carbon, and (5) three-dimensional matrix carbonaceous materials.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mario Joseph Nappa, V.N.Mallikarjuna Rao
  • Patent number: 6368542
    Abstract: A thermal expansion compensation support and method are used in a hot runner injection mold for maintaining liquid-tight relationships between parts that define a flow passageway. The support includes an annular housing having an annular recess that receives a spring, such as a Belleville washer, and a cover that overlies the annular recess in the housing. The housing and the cover are spring biased from each other to maintain a pressure force on the surfaces that are in contact with the outer faces of each of the cover and of the annular housing. The support imparts a holding force on the several parts of the machine that define the molding material flow passageway to prevent leakage. The method involves holding the parts together at a first holding force level for an initial portion of a warm-up temperature range and holding the parts together at a second holding force level for the remainder of the temperature range.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: April 9, 2002
    Assignee: D-M-E Company
    Inventors: Frederick G. Steil, Rui Novo, Frank J. Eigler
  • Patent number: 6368710
    Abstract: A sulfonated copolyester of the reaction product of: (a) one or more aromatic dicarboxylic acids or an ester thereof; (b) one or more aliphatic dicarboxylic acids or an ester thereof; (c) one or more sulfonated compound; and (d) isosorbide. The polyesters are useful to form articles of increased biodegradability.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Richard Allen Hayes
  • Patent number: 6368804
    Abstract: A method for preserving immobilized or unimmobilized microbial cells having nitrilase activity and for stabilizing the nitrilase activity of unimmobilized or immobilized microbial cells has been developed. The unimmobilized or immobilized microbial cells are stored in an aqueous solution containing from about 0.10 M to the saturation concentration of an inorganic salt of bicarbonate or carbonate, including ammonium, sodium and potassium salts of bicarbonate or carbonate. Aqueous suspensions containing at least 100 mM bicarbonate or carbonate limit microbial contamination of the stored enzyme catalyst, as well as stabilize the desired nitrilase activity of the uninmmobilized or immobilized cells. Microorganisms which are characterized by an nitrilase activity and are stabilized and preserved by this method include Acidovorax facilis 72-PF-15 (ATCC 55747), Acidovorax facilis 72-PF-17 (ATCC 55745), Acidovorax facilis 72W (ATCC 55746), and transformed microbial cells having nitrilase activity, preferably E.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Arie Ben-Bassat, Robert Dicosimo, Robert Donald Fallon
  • Patent number: 6368716
    Abstract: This invention is directed to an adhesive composition comprising: A. 80-98% by weight, based upon the total amount of adhesive dry solids, of at least one latex copolymer comprising: (1) 20-55% by weight, based upon the weight of the copolymer, of at least one brominated aromatic monomer, (2) 5-15% by weight, based upon the weight of the copolymer, of a monomer selected from the group consisting of glycidyl acrylate, glycidyl methacrylate, and mixtures thereof, and (3) 40-60% by weight, based upon the weight of the copolymer, of at least one non-brominated monofunctional(meth)acrylate monomer; (4) 0-10% by weight, based upon the weight of the copolymer, of a monomer selected from the group consisting of acrylonitrile, methacrylonitrile, and mixtures thereof; B. 0-10% by weight, based upon the total amount of adhesive dry solids, of at least one crosslinking agent; C. 1-10% by weight, based upon the total amount of adhesive dry solids, of at least one antimony oxide; and D.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Melvin A. Neiss
  • Patent number: 6368486
    Abstract: A low temperature alkali metal electrolysis process for carrying out the electrolysis in the presence of a co-electrolyte and an alkali metal halide. The co-electrolyte comprises (1) a nitrogen-containing compound and optionally one ore more Group IB halides, Group IIIA halides, Group VIII halides; (2) a Group IIIA halide, a Group VB halide, or combinations of a Group IIIA halide and a Group VB halide; or (3) water. Further provided is an electrolyte comprising an alkali metal halide and a co-electrolyte that comprises (1) a nitrogen-containing compound and optionally one ore more Group IB halides, Group IIIA halides, Group VIII halides or (2) a Group IIIA halide, a Group VB halide, or combinations of a Group IIIA halide and a Group VB halide.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Jeffrey S. Thompson, Howard M. Blank, Walter John Simmons, Oswald Robert Bergmann
  • Patent number: 6367109
    Abstract: An apparatus for cleaning a floor surface having weight support members thereon for carrying the weight of the apparatus into the floor surface includes a brush having a baseplate with an array of bristles. The brush has a plurality of supply passages, each of which communicates with a portion of the bristle array. The brush is loosely attached by a flexible torque transmitting coupling to the shaft for rotation about a centerline of rotation. The brush is attached to a motor shaft in such a way that, in use, the brush is responsive to irregularities in the floor surface as the apparatus is moved thereover by moving in a direction generally parallel to a centerline of rotation and/or in a plane generally perpendicular thereto. A baffle mounted to the top surface of the brush so as to surround the supply passages. In use, a foam cleaning agent is dispensed onto a location on the top surface of the brush inwardly of the supply passages.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Arlen Dale Besel, Davis Emerson Lee
  • Patent number: 6368837
    Abstract: The present invention provides several methods for biological production of para-hydroxycinnamic acid (PHCA). The invention is also directed to the discovery of new fungi and bacteria that possess the ability to convert cinnamate to PHCA. The invention relates to developing of a new biocatalyst for conversion of glucose to PHCA by incorporation of the wild type PAL from the yeast Rhodotorula glutinis into E. coli underlining the ability of the wildtype PAL to convert tyrosine to PHCA. The invention is also directed to developing a new biocatalyst for conversion of glucose to PHCA by incorporation of the wildtype PAL from the yeast Rhodotorula glutinis plus the plant cytochrome P-450 and the cytochrome P-450 reductase into E. coli. In yet another embodiment, the present invention provides for the developing of a new biocatalyst through mutagenesis of the wild type yeast PAL which possesses enhanced tyrosine ammonia-lyase (TAL) activity.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont Nemours and Company
    Inventors: Anthony A. Gatenby, Sima Sariaslani, Xiao-Song Tang, Wei Wei Qi, Todd Vannelli
  • Patent number: 6368719
    Abstract: A process for preparing a multi-layer coating on an electrically conductive automotive body or an electrically conductive automotive body part by applying a cathodic electrodeposition coating layer, optionally a further coating layer and an outer clear coating, in which the cathodic electrodeposition coating layer of a cathodic electrodeposition coating composition is applied which, as the cathodic electrodeposition binder, contains a seed polymer with an amine value of 30 to 100 mg KOH/g and a hydroxyl value of 50 to 200 mg KOH/g, which can be prepared by radical polymerisation of 70 to 97 wt-% of a monomer mixture comprising hydroxy-functional olefinically unsaturated monomer and amino-functional olefinically unsaturated monomer in the presence of 3 to 30 wt-% of an aminoepoxy resin.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ludwig Siever, Walter Kuehhirt, Klausjoerg Klein, Karl-Friedrich Doessel
  • Patent number: 6364312
    Abstract: A method and arrangement are provided for removing air inclusions between sheets in a stack when forming the stack from sheets fed successively by a sheet feeder to the stack to be formed and deposited thereon in a sheet feeding region. Air out is suction out of the spaces between the sheets in the sheet-feeding region.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: April 2, 2002
    Assignee: E. C. H. Will GmbH
    Inventor: Bernd Ramcke