Patents Assigned to E
  • Process for preparation of high opacity photosensitive images
    Patent number: 4275140
    Abstract: Process for preparation of high opacity colored images on a photosensitive element surface which comprises bringing into surface-to-surface contact two elements, e.g., by laminating at elevated temperature, element (1) being a photosensitive element having tacky and nontacky image areas, and element (2) being an adhesively supported pigment/binder layer, 75 to 95 parts by weight pigment, e.g., TiO.sub.2, and 25 to 5 parts by weight elastomeric binder having a relatively low maximum tensile stress and a high elongation to break when cast as a film, and separating the two elements.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: June 23, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Melvin A. Neiss
  • Aminothiazolyl ureido sulfoxide cephalosporins
    Patent number: 4275062
    Abstract: Cephalosporins of the formula ##STR1## R represents hydrogen, sodium, potassium, or certain ester groups, R.sub.1 is in the .alpha.-configuration and is hydrogen or methoxy, X represents hydrogen ##STR2## R.sub.3 represents hydrogen or lower alkyl, R.sub.4 is hydrogen, lower alkyl, ##STR3## or --(CH.sub.2).sub.n --N--(lower alkyl).sub.2, R.sub.5 represents hydrogen, sodium or potassium, and n represents an integer from 1 to 4. These compounds are useful as antibacterial agents.
    Type: Grant
    Filed: September 19, 1979
    Date of Patent: June 23, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Hermann Breuer, Theodore Denzel, Uwe D. Treuner
  • Flake silver powders with chemisorbed monolayer of dispersant
    Patent number: 4273583
    Abstract: Flake silver powders which have a chemisorbed monolayer of organic dispersing agent such as oleic acid on the surfaces and process for their preparation are provided. Such silver powders can be formulated into thick film pastes at above 85% solids levels at relatively low viscosities. Pastes so obtained, when printed and fired, result in films of excellent conductive efficiency.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Leo W. Tyran
  • Acicular .alpha.-iron particles and recording media employing same
    Patent number: 4273807
    Abstract: Particulate product containing at least 75 weight % iron (total iron content) and at least 25 weight % acicular .alpha.-iron metal, process for making said product and magnetic recording medium having said product incorporated therein, said product having a length less than 1 micron (.mu.), a length to diameter ratio of at least about 10:1, a coercivity (iH.sub.c), of greater than about 800 oersteds, a saturation magnetization (.sigma..sub.s) of at least 110 electromagnetic units/gram (emu/g), a residual (remanent) magnetization (.sigma..sub.r) of at least 50 emu/g, and a ratio (.sigma..sub.r /.sigma..sub.s) of residual (remanent) magnetization (.sigma..sub.r) to saturation magnetization of at least about 0.45.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kenneth L. Berry
  • Coating compositions of an alkyd-acrylic graft copolymer
    Patent number: 4273690
    Abstract: A coating composition containing as the film forming binder a graft copolymer having an acrylic backbone and alkyd resin chains; whereinthe acrylic backbone of the graft copolymer is of polymerized acrylic monomers and contains about 0.1-20% by weight of polymerized isocyanato alkyl acrylates or methacrylates and the alkyd resin side chains are attached to the acrylic backbone by an isocyanato group that reacts with a hydroxyl or carboxyl group of the alkyd resin.An alkyd resin and plasticizer are usually added to the coating composition. The coating composition can be diluted with water or solvents for application and is particularly useful as a finish for automobiles and trucks and other equipment and can be used to refinish and repair automobile and truck finishes.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Aloysius N. Walus
  • Two-stage flotation purification of NaOH
    Patent number: 4273657
    Abstract: A process for purifying an aqueous solution of NaOH by removing suspended NaCl and Na.sub.2 SO.sub.4 impurities therefrom comprising bubbling a gas into the impurity-containing NaOH solution at a first stage temperature above 16.degree. C. up to 31.degree. C. and at a second stage temperature above 31.degree. C. up to about 36.degree. C., separating a foam layer containing NaCl and Na.sub.2 SO.sub.4 from NaOH at the first stage and a foam layer containing Na.sub.2 SO.sub.4 from NaOH at the second stage.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventors: Raymond H. Conageski, Joseph D. Paciotti
  • Antibacterial and antifungal derivatives of 3-(1H-imidazol-1-yl)-2-propen-1-ones
    Patent number: 4273776
    Abstract: Compounds are provided having the structure ##STR1## wherein R.sup.1 is lower alkyl; phenyl-lower alkyl; phenyl; substituted phenyl wherein the phenyl group bears one or two halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylothio, cyano or nitro groups; 5- or 6-membered monocyclic aromatic heterocyclics containing one hetero atom, namely, O, S or N, such as furanyl, pyridinyl or thiophenyl; and substituted heterocyclics wherein any of the above heterocyclics bears one halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro group;R.sup.2 and R.sup.3 may be the same or different and each may be hydrogen, lower alkyl, halogen, phenyl, or substituted phenyl wherein the phenyl group bears one halogen, hydroxy, lower alkyl, lower alkoxy, lower alkylthio, cyano or nitro group.The above compounds as well as acid-addition salts thereof are useful as antimicrobial agents.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: June 16, 1981
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Hans Hoehn
  • Polymeric binders for aqueous processable photopolymer compositions
    Patent number: 4273857
    Abstract: Photopolymerizable compositions are described containing a polymerizable ethylenically unsaturated monomer, a photoinitiator or initiator system, and selected acidic polymeric binders. The organic binder mixture contains a compound chosen from each of two selected classes. These photopolymerizable compositions yield superior processability, i.e., on developing and stripping, in solely aqueous alkaline media devoid of organic solvents, decreased softness and/or tackiness, and improved adhesion when compared to the prior art. The compositions are particularly useful for preparing photoresists.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ernst Leberzammer, Leo Roos
  • Ethylene-acrylic enamels
    Patent number: 4273695
    Abstract: Curable coating composition containing the film-forming ingredient consisting essentially of, with the sums of the parts by weight and the mole percentages being 100 and 100%, respectively:(1) about 55-95 parts by weight of a copolymer of(a) 20-70 mole % ethylene,(b) 20-60 mole % methyl methacrylate,(c) 1-15 mole % of a hydroxyalkyl ester of acrylic acid or methacrylic acid in which the hydroxyalkyl group contains 2-4 carbon atoms, and(d) 0-9 mole % of an .alpha.,.beta.-unsaturated carboxylic acid selected from acrylic acid, methacrylic acid, itaconic acid, crotonic acid, 2-ethylacrylic acid, and 2-propylacrylic acid, or of maleic anhydride, and(2) about 5-45 parts by weight of a nitrogen-resin crosslinking agent.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robin N. Greene, Walter R. Hertler
  • Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
    Patent number: 4273728
    Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy compound, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 CN. The polyfluoroallyloxy compounds copolymerize with ethylenically unsaturated monomers such as tetrafluoroethylene, chlorotrifluoroethylene or vinylidene fluoride to form polymers which are moldable, and in some cases electrically conducting or are waterwettable and dyeable.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl G. Krespan
  • Drive arrangement
    Patent number: 4273521
    Abstract: A helical gear pump, compressor or motor including an inner member with an external helical gear form having n starts, an outer member with a cooperating internal gear form having n.+-.1 starts. The inner member is provided with a first externally toothed gear and the outer member is provided with a second externally toothed gear. A geared connection between the first and second external gears synchronizes the rotation of the inner and outer members so that they can rotate relative to one another independently of any contact between the helical gear forms of the inner and outer members.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: June 16, 1981
    Assignee: E. T. Oakes Limited
    Inventors: Donald E. Baker, David W. Bouette
  • Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
    Patent number: 4273729
    Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorcarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy carboxylic acid fluoride or sulfonyl fluoride, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 SO.sub.2 F. The polyfluoroallyloxy compounds copolymerize with ethylenically unsaturated monomers such as tetrafluoroethylene, chlorotrifluoroethylene or vinylidene fluoride to form polymers which are moldable, and in some cases electrically conducting or are water-wettable and dyeable.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl G. Krespan
  • Ventilating system for protective clothing
    Patent number: 4271833
    Abstract: A ventilating system for use with protective clothing of the type including a head enclosure and an outer covering for a user's body is described. The system provides for the distribution of air from a pressurized source to a user's limbs to provide a flow of air thereabout while insuring that sufficient pressurized air is delivered to the head enclosure for respiration and to maintain a positive pressure plenum therein under all conditions.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: June 9, 1981
    Assignee: E. D. Bullard Company
    Inventor: Anthony L. Moretti
  • Paint roller cage assembly apparatus and method
    Patent number: 4271579
    Abstract: A paint roller cage assembly apparatus in which a group of four cage wires are held and affirmatively positioned generally as if at the corners of a square; a cage wire cap with sockets for the cage wires is then applied to one end of the cage wires, and a similar cage wire cap is next applied to the other end of the cage wires, thereby automatically assembling a paint roller cage; the apparatus includes cage wire feeders, and a plurality of cage wire holders in the form of pivotably associated links which may be pivoted to position the wires for the application of the caps.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: June 9, 1981
    Assignee: Charles E. Green & Son, Inc.
    Inventors: Walter McDonald, Norbert J. Seitel
  • D.C. Voltage fluorescent lamp
    Patent number: 4272703
    Abstract: A fluorescent lamp having a plurality of columns positioned in a generally uniform manner within the lamp envelope, each column having an electron emissive cathode mounted therein connected to a cathode leadwire. An anode member connected to an anode leadwire extends to the upper portions of each column. A conductive starter member is mounted within each column so as to provide a first gap between one of its ends and the cathode and a second gap between the other of its ends and the associated anode extension. A D.C. voltage is applied to the anode and cathode leadwires, the D.C. voltage being obtainable from an external A.C. source via a suitable voltage rectifier/multiplier circuit which is positioned within the re-entrant stem member of the lamp.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: June 9, 1981
    Assignee: Edwin E. Eckberg
    Inventor: Edwin E. Eckberg
  • Photosensitive compositions containing thermoplastic ionomeric elastomers useful in flexographic printing plates
    Patent number: 4272608
    Abstract: Photosensitive, elastomeric compositions comprising(1) a high molecular weight carboxylated butadiene/acrylonitrile copolymer in which at least about 25% of the carboxyl groups are neutralized with a metal cation of Groups IIA or IIB of the Periodic Table,(2) an ethylenically unsaturated monomer, and(3) a free radical generating system, having outstanding properties as photosensitive elements for flexographic printing plates.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: June 9, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen Proskow
  • Method and apparatus for producing a cellular product
    Patent number: 4272558
    Abstract: A method and apparatus for producing a cellular product, such as cellular chocolate, in which the first component of the product, e.g. the chocolate, in liquid form, has introduced into it a second gaseous component which is largely soluble in the liquid first component, the gas is dispersed in the first liquid component uniformly so that it is dissolved throughout the liquid, the pressure is released suddenly, so that the dissolved component forms gaseous bubbles in the liquid and the first component in the resulting product is then solidified by cooling.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: June 9, 1981
    Assignee: E. T. Oakes Limited
    Inventor: David W. Bouette
  • Combination pressure release cooling cap and recovery of coolant
    Patent number: 4271976
    Abstract: A radiator cap is provided with safety venting character for use with a coolant recovery system. The cap is provided with lever means which compel safety venting of excess pressure in the radiator before the cap can be removed, the venting being effected automatically through a selectively movable valve that is moved to an open position by actuation of the lever means. The cap serves as part of a coolant recovery system, with the selectively movable valve also serving as the valve that automatically opens to permit siphoning of coolant back into the radiator during the cool-down portion of the coolant's heating and cooling cycle.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: June 9, 1981
    Assignee: E. Edelmann & Co.
    Inventor: Timothy Detwiler
  • Method of monitoring oxygen concentrations in gas streams
    Patent number: 4272249
    Abstract: The concentration of oxygen in a gas stream is determined by passing the gas stream through an optical absorption cell maintained above about 100.degree. C., sealing off the cell, injecting sufficient amount of nitrogen oxide, NO, to react with all of the oxygen in the gas stream, and determining the absorbance of nitrogen dioxide, NO.sub.2, formed in that reaction. This method is quick, accurate, and independent of gas flows or gas pressure.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: June 9, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph P. D'Antonio
  • Apparatus with expandable tube bundle
    Patent number: 4271900
    Abstract: An apparatus comprising in combination (a) an elongated bundle of flexible, relatively small diameter, thin walled hollow polymeric tubular elements of various lengths, in a twist configuration having a length greater than the housing and a lateral dimension securing means at both ends, (b) a housing means for said bundle wherein said bundle extending entirely within said housing means with said bundle anchored to said housing means in said twisted configuration, (c) means for securing in fluid tight arrangement said housing means to said lateral dimension securing means and (d) circular spacers for the tubes, the longer length of said bundle when secured within said housing means causing a bowing of said tubes that permits flexing and moving of the tubular elements in said bundle.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: June 9, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles F. Reitz