Patents Assigned to E
  • Patent number: 5858066
    Abstract: An improved process is disclosed for separating and recovering a fluorocarbon and hydrogen chloride (HCl) from a gaseous fluorocarbon/HCl mixture, wherein the fluorocarbon and HCl are difficult to separate by conventional means because of the presence or potential formation of an azeotrope or azeotrope-like composition in the mixture, such process comprising using a semi-permeable membrane unit to form a fluorocarbon-depleted stream and a fluorocarbon-enriched stream which may then be further processed individually by distillation.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William G. O'Brien, Barry A. Mahler
  • Patent number: 5859239
    Abstract: Compounds of the formula ##STR1## wherein X.sub.1 is ##STR2## are disclosed. These compounds possess inhibitory activity against angiotensin converting enzyme and neutral endopeptidase and thus useful as cardiovascular agents.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: January 12, 1999
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Donald S. Karanewsky, Jeffrey A. Robl
  • Patent number: 5858736
    Abstract: A process for the preparation of five-membered or six-membered ring lactams from aliphatic .alpha.,.omega.-dinitriles has been developed. In the process an aliphatic .alpha.,.omega.-dinitrile is first converted to an ammonium salt of an .omega.-nitrilecarboxylic acid in aqueous solution using a catalyst having an aliphatic nitrilase (EC 3.5.5.7) activity, or a combination of nitrile hydratase (EC 4.2.1.84) and amidase (EC 3.5.1.4) activities. The aimnonium salt of the .omega.-nitrilecarboxylic acid is then converted directly to the corresponding lactam by hydrogenation in aqueous solution, without isolation of the intermediate .omega.-nitrilecarboxylic acid or .omega.-monocarboxylic acid. When the aliphatic .alpha.,.omega.-dinitrile is also unsymmetrically substituted at the .alpha.-carbon atom, the nitrilase produces the .omega.-nitrilecarboxylic acid ammonium salt resulting from hydrolysis of the .omega.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Di Cosimo, Robert Donald Fallon, John Edward Gavagan, Frank Edward Herkes
  • Patent number: 5858583
    Abstract: Novel thermally imageable monochrome product compositions, elements, and processes are disclosed herein. These compositions and elements characteristically have high contrast and fast imaging speeds. The thermally imageable compositions of this invention comprise (a) at least one hexaarylbiimidazole (HABI) compound, (b) at least one leuco dye, (c) at least one acid-generating compound, (d) a polymeric binder, (e) optionally at least one UV stabilizer and/or at least one inhibitor of color formation, and, in certain embodiments, (f) at least one near IR-absorbing dye. These compositions have the propensity for affording, upon thermal imaging, highly colored images having high optical density values. At the same time, background color is low in preferred compositions even after extensive exposure to ambient light. These compositions can be imagewise heated to effect color formation (i.e.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Rolf Dessauer, Jonathan V. Caspar
  • Patent number: 5858449
    Abstract: This invention relates to a novel isoflavone-enriched soy protein product and a method used for its manufacture. The finished soy protein product displays desirable flavor and functional properties, and its isoflavone content is substantially increased compared to traditional soy protein concentrates and isolates. In addition the total sulfur containing amino acid content is improved compared to soy protein isolates. The method for the manufacture of the novel soy protein product results in improved yield and reduced waste products compared to those used to manufacture soy protein concentrates and isolates. The novel soy protein product displays desirable flavor, composition, and performance as an ingredient in the production of dairy or meat based food products such as infant formula, nutritional beverage, milk replacer, soy extended bologna, imitation processed cheese spread, water-injected ham, yogurt and frozen dessert.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: January 12, 1999
    Assignees: E. I. du Pont de Nemours and Company, Donald Lee Crank
    Inventors: Donald Lee Crank, Phillip Scott Kerr
  • Patent number: 5858885
    Abstract: A smooth elastic stretch fabric which is plain woven with weft and/or warp yarns that include combination yarns which comprise a partially oriented synthetic crystalline polymer yarn combined with an elastomeric core wherein the smooth fabric (i.e., a non-crepe effect) is the result of a tight weave characterized by the reciprocal of the warp apparent fractional cover (i.e., 1/WaAFC) being in the range between about 1.13 and about 2.06. The fabric is stretched, heat set and finished under particular conditions to provide the resultant fabric with an elastic stretch of more than about 10% and dimensions about equal to the as-woven dimensions.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Cathy Jane Hamilton, Becky June Lewis
  • Patent number: 5859108
    Abstract: Molded parts having good frictional wear resistance are provided by a polyacetal composition containing 0.25-15 parts by weight of fine spherical ceramic powder of 1.0 .mu.m or smaller average grain size to 100 parts by weight of polyacetal resin.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kenichi Shinohara
  • Patent number: 5859128
    Abstract: Modified starches prepared by cooking an amphoteric or cationic starch and an anionic, amphoteric, or cationic polyacrylamide have utility as a retention aid in the manufacture of paper.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Robert Harvey Moffett
  • Patent number: 5857220
    Abstract: A strap logo for a user to apply to the strap of a bag, cap, to shoestrings, or other articles having a linearly extended member comprises a logo face rotably attached to arms which encircle the strap and are, in turn, attached to each other by complementary hook and loop fastening means. As constructed, the strap logo may be temporarily attached to a variety of straps and removed at the user's option.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: January 12, 1999
    Assignee: C & E Products LLC
    Inventors: Albert W. Erny, Linda H. Clower
  • Patent number: 5859187
    Abstract: Inhibition of UL42 stimulation of herpesvirus DNA polymerase activity is exhibited by novel compounds of the formulasW'--A.sub.1 --A.sub.2 --A.sub.3 --A.sub.4 --A.sub.5 --A.sub.6 --A.sub.7 --A.sub.8 --A.sub.9 --A.sub.10 --A.sub.11 --X ?SEQ. ID NO: 1!andY'--A.sub.12 --A.sub.13 --A.sub.14 --A.sub.15 --A.sub.16 --A.sub.17 --Z ?SEQ. ID NO: 2!that are useful as antiviral agents.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: January 12, 1999
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: James T. Matthews, Katerina Leftheris, Robert K. Hamatake, John T. Stevens, Mary L. Haffey
  • Patent number: 5859113
    Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder);the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; whereinthe polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; andthe B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; andwherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: January 12, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patrick F. McIntyre, James G. King, Harry J. Spinelli, Henry G. Jakubauskas
  • Patent number: 5856423
    Abstract: An improved process and apparatus for the production of a polyester or other condensation polymer is disclosed. In particular, polymerization is conducted in a reaction vessel equipped with a specially designed agitator that exposes the polymer melt partially filling the reaction vessel to inert gas flowing through the vessel. The agitator comprises a plurality of elements that lift a portion of a polymer melt in the reaction vessel and generate films of the polymer melt which films extends in planes that are parallel to the axis of the agitator and the flow of gas through the reaction vessel. In a preferred process, a melt of bis(2-hydroxyethyl) terephthalate, or its low molecular oligomers, obtained by esterifying terephthalic acid or transesterifying dimethyl terephthalate with ethylene glycol, is contacted with an inert gas at about atmospheric pressure in order to remove the reaction by-products and facilitate polymerization.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: January 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Kamlesh Kumar Bhatia
  • Patent number: 5856405
    Abstract: Halide polymers such as polyvinyl chloride and polyamides melt blended at a polyamide to halide polymer weight ratio of about 1.5:1 to about 2:1 with an effective amount of a carboxyl and/or CO-functional ethylene polymer to compatibilize the halide polymer and polyamide exhibit superior chemical resistance.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: January 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: George Henry Hofmann
  • Patent number: 5855759
    Abstract: The present invention relates to an electrochemical cell and a process for producing a hydroxide solution, sulfuric acid and a halogen gas from a hydrogen halide and a sulfate solution. In particular, the sulfate solution may be an alkali metal sulfate solution, such as sodium or potassium sulfate solution, an alkaline earth metal sulfate solution or an ammonium sulfate solution. The cell and the process may use either an anhydrous or an aqueous hydrogen halide, namely, hydrogen chloride, hydrogen fluoride, hydrogen bromide and hydrogen iodide, to a respective dry halogen gas, such as chlorine, fluorine, bromine, or iodine, to produce hydrogen ions in order to split the alkali metal solution and form the sulfuric acid. The cell has two membrane-electrode assemblies, where an anode is disposed in contact with one membrane, and a cathode is disposed in contact with another membrane. The sulfate solution is fed in between the membrane-electrode assemblies.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: January 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kenneth Bernard Keating, James Arthur Trainham, III, Clarence Garlan Law, Jr., John Scott Newman
  • Patent number: 5855748
    Abstract: The invention relates to an electrochemical cell which has an electrode, a membrane disposed in contact with one side of the electrode and a mass flow field disposed on the other side of the electrode for directing fluid to and away from the electrode. The mass flow field comprises glassy carbon. The cell of the present invention is particularly useful in converting anhydrous hydrogen halide, in particular, hydrogen fluoride, directly to essentially dry halogen gas, such as anhydrous hydrogen fluoride to fluorine gas.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: January 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Clarence Garlan Law, Jr., James Arthur Trainham, III, John Scott Newman
  • Patent number: 5856477
    Abstract: The azepine intermediates of the formula ##STR1## wherein R.sub.6 and R.sub.7 are other than hydrogen are disclosed. These intermediates can be reacted with acylmercaptocarboxylic acids of the formula ##STR2## to give the pharmaceutically active products.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: January 5, 1999
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Jeffrey A. Robl
  • Patent number: 5856476
    Abstract: Processes are disclosed for preparing the azepine intermediates of the formula ##STR1## These intermediates can be reacted with acylmercaptocarboxylic acids of the formula ##STR2## to give the pharmaceutically active products.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: January 5, 1999
    Assignee: E. R. Squibbs & Sons, Inc.
    Inventor: Jeffrey A. Robl
  • Patent number: 5855820
    Abstract: The present invention is a thick film water based conductive coating composition comprising, based on total composition: (a) 5-40% wt. first aqueous dispersion of polyhydroxyether polymer grafted with at least one acrylic or methacrylic monomer wherein the dispersion is 25-40% wt. grafted polymer solids; (b) 20-80% wt. finely divided metallic electrically conductive particles selected from the group consisting of silver, copper, nickel, silver coated copper, silver coated nickel, carbon, graphite and mixtures thereof; (c) 0-20% by wt. second aqueous dispersion of an acrylic or polyurethane polymer wherein the dispersion is 25-40% wt. polymer solids; (d) 0-5% wt. water soluble polymer; and wherein all of (a), (b), (c) and (d) are dispersed in water and about 1-8% wt. co-solvent.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: January 5, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Man-Sheung Chan, Jay Robert Dorfman
  • Patent number: 5855398
    Abstract: An assembly for connecting a fuel or fluid line between a male part and a female part in which a laminar block axially locks the male part and the female part in connection with one another by being displaced about the male part in a direction perpendicular to the axis of the connecting line. The assembly includes a unitary element made of a semi-rigid material and having a substantially semi-circular portion constituting an elastic clamp, projections extending from one side of the clamp, each including a portion facing inwardly toward a central longitudinal axis of the clamp and adapted to engage with the female part, a flap arranged at each end region of the clamp and having a small thickness, and an annular stop releasably coupled to the flaps and including radial blocking elements. The annular stop is adapted to be interposed between the male part and the female part and to be ruptured or separated from the flaps and thus the elastic clamp upon insertion of the male part fully into the female part.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: January 5, 1999
    Assignee: Tampas Click Para Veiculos Industria E Comercio Ltda.
    Inventor: Antonio Carlos Reinholz
  • Patent number: 5855196
    Abstract: An apparatus for automatically controlling the activation of the throttle on a carburetor on the engine of a drag race car before the start of the race while staging the car. The apparatus eliminates some of the tasks a driver must perform during the process of staging and launching a race vehicle on the starting line(such as physically depressing the throttle pedal) using a starting line throttle actuation system for Pro tree and Full tree modes for controlling the throttle opening. In both Pro and Full tree modes, the staging process is simplified by allowing the driver to stage with the throttle pedal pre-depressed in the wide open down position, with the actual opening of the throttle controlled by the starting line throttle actuation control system. The apparatus has the driver use the same staging procedure for both Pro tree and Full tree races, thus eliminating separate training that has been required for Pro and Full tree races.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: January 5, 1999
    Assignee: Curtis E. Rodden
    Inventor: Frank Hawley