Patents Assigned to E
  • Integrated circuit connector
    Patent number: 4169642
    Abstract: A flexible printed circuit has printed electrical contacts which are spring loaded to corresponding integrated circuit contacts or to corresponding other circuit contacts to form a connector.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: October 2, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bob Mouissie
  • Herbicidal sulfonamides
    Patent number: 4169719
    Abstract: N-(heterocyclicaminocarbonyl)arylsulfonamides, such as N-[(4,6-dimethylpyrimidin-2-yl)aminocarbonyl] benzenesulfonamide, are useful for the regulation of plant growth and as herbicides, particularly for controlling nutsedge.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: October 2, 1979
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventor: George Levitt
  • 7.beta.-[[[2-Acylamino]-1,2-dioxoethyl]amino]acyl cephalosporins
    Patent number: 4169947
    Abstract: 7.beta.-[[[2-Acylamino]-1,2-dioxoethyl]amino]acyl cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl or a salt forming ion; R.sub.1 is hydrogen, lower alkyl, saturated or unsaturated cycloalkyl, phenyl, phenyl-lower alkyl, substituted phenyl or certain heterocyclic groups; R.sub.2 is hydrogen or methoxy; R.sub.3 is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.4 is lower alkyl, cycloalkyl, phenyl, substituted phenyl or certain heterocyclic groups; and X is hydrogen, lower alkanoyloxy, carbamoyloxy, lower alkoxy, lower alkylthio, ##STR2## or certain heterothio groups, are useful as antibacterial agents.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: October 2, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Uwe D. Treuner, Hermann Breuer
  • Reactions of thiooxime cephalosporin and penicillin derivatives
    Patent number: 4169946
    Abstract: Compounds of the formula ##STR1## wherein A is ##STR2## R is hydrogen, lower alkyl, benzyl, p-methoxybenzyl, p-nitrobenzyl, diphenylmethyl, tri(lower alkyl)silyl, lower alkoxymethyl, 2,2,2-trichloroethyl, ##STR3## Y is halogen or lower alkoxy; R.sub.1 is lower alkyl, phenyl, or substituted phenyl; and X is hydrogen, lower alkanoyloxy, ##STR4## or certain heterothio groups; R.sub.4 is hydrogen or lower alkyl; R.sub.5 is lower alkyl; are disclosed. These compounds, particularly the free acids, possess the useful pharmacological property of inhibiting .beta.-lactamase enzymes as well as being useful as intermediates, particularly where R is a readily cleavable ester, in the preparation of antibacterially active 6.alpha.-methoxy penicillins and 7.alpha.-methoxy cephalosporins.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: October 2, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Eric M. Gordon
  • Process for spinning flame-resistant acrylonitrile polymer fibers
    Patent number: 4169876
    Abstract: An improved process for spinning flame-resistant acrylonitrile polymer fibers wherein 33-43% by weight (preferably 35-40% by weight) of a chlorinated acyclic hydrocarbon containing 60-73% (preferably 66-70%) by weight chlorine and 57-67% (preferably 60-65%) by weight of an acrylonitrile polymer having an intrinsic viscosity of 1.6-3 (preferably 1.8-2.2) is dissolved in a suitable solvent to form a solution containing 25-31% by weight solids which solution is extruded under conventional dry spinning conditions to give fibers which are extracted, drawn and dried. Optionally, the spinning solution also contains 0.5-6% (preferably about 3%) by weight antimony trioxide based on total solids.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: October 2, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert S. Irwin
  • Mercaptoisocyanates and process for preparing the same
    Patent number: 4169955
    Abstract: A mercaptoisocyanate having the formula ##STR1## where R is an alkylene group having 2-6 carbon atoms andR.sup.1 is an aliphatic group, a cycloaliphatic group or an aromatic group;The mercaptoisocyanate is a useful intermediate for preparing graft copolymers.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: October 2, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John A. Simms
  • Powder coating composition of a mixture of epoxy resins
    Patent number: 4169187
    Abstract: A powder coating composition of a mixture of epoxy resins is obtained by blending two types of epoxy resins with a curing agent. One resin is of the epichlorohydrin-bisphenol-A type. The other resin is an epichlorohydrin-bisphenol-A epoxy modified with an epoxy-novolac. Cure is obtained by using a dicyandiamide crosslinking agent. The composition is useful as a coating for the interior of food and beverage containers. The composition is also useful as a lining in hot-water services when finely divided polyvinylidine fluoride powder is added for hydrophobicity.
    Type: Grant
    Filed: March 28, 1978
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barbara L. Glazar
  • Process for making catalytically active Raney nickel electrodes
    Patent number: 4169025
    Abstract: A process for making an electrode having a Raney nickel surface layer of thickness greater than 75 microns and an average porosity of at least 11%, comprising interdiffusing aluminum and nickel on a conductive metal core at a temperature of at least 660.degree. C. to form a nickel-aluminum alloy layer on the core from which layer aluminum is selectively dissolved. When used as a cathode in an electrolytic cell for producing hydrogen, chlorine and caustic from brine, the electrode exhibits low hydrogen overvoltage.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Christopher R. S. Needes
  • Photopolymerizable compositions containing nitroso dimers to selectively inhibit thermal polymerization
    Patent number: 4168982
    Abstract: Thermally stable photopolymerizable compositions comprise(i) at least one nongaseous ethylenically unsaturated compound,(ii) a nitroso dimer which is a noninhibitor of free-radical polymerization but thermally dissociates to nitroso monomer which is an inhibitor of free-radical polymerization, and(iii) an organic, radiation-sensitive free-radical generating system.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jose F. Pazos
  • Spectral correlation
    Patent number: 4169245
    Abstract: Two signals are correlated in a properly programmed digital computer to render a result reflecting the difference in time of arrival of the two signals at separate receiving stations from a common emitter station. Signals received at each of the receiver stations are converted into digital data and transmitted via a data link to a central correlation station. At the central correlation station, the individual digital signals are checked for magnitude and power content prior to conversion into the frequency domain by a fast Fourier transform. Previously stored calibration data from each of the receiver stations is combined with the frequency domain data to provide corrected information for correlation to determine the difference in time of arrival of signals from a common emitter station.
    Type: Grant
    Filed: July 26, 1972
    Date of Patent: September 25, 1979
    Assignee: E-Systems, Inc.
    Inventors: Carol L. Crom, Carl N. Kelly, Thomas C. Tillotson
  • Aromatic polysulfone resin solution having perfluorocarbon polymer particles dispersed therein
    Patent number: 4169117
    Abstract: The novel coating composition contains a uniformly dispersed perfluorocarbon polymer in an organic solvent solution of an aromatic polysulfone resin; finishes of the novel composition have excellent grease and stain resistance, good thermal stability, toughness and durability and good release properties and are useful as coatings for vessels, appliances, industrial equipment and in particular as release finishes for bakeware and cookware.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph A. Vasta
  • Substituted 3,6-dihydro-1(2H)-pyridinylpropanols
    Patent number: 4169200
    Abstract: Compounds having the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein R.sub.1 is alkanoyl; R.sub.2 is ##STR2## AND N IS 0, 1 OR 2; HAVE USEFUL HYPOTENSIVE PROPERTIES.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: September 25, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Frederic P. Hauck, Rita T. Fox, John R. Watrous
  • Method of treating inflammatory and psychotic conditions with 1,2,4 triazole derivatives and compositions containing same
    Patent number: 4169148
    Abstract: A method is provided for treating inflammatory and/or psychotic conditions with triazole derivatives, such as 3-alkyl-5-phenyl-1,2,4-triazoles. Pharmaceutical compositions containing such triazoles are also provided.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: September 25, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Peter C. Wade, B. Richard Vogt
  • Heat-stable polymer coating composition with oxidation catalyst
    Patent number: 4169083
    Abstract: A coating composition consisting essentially of certain heat-stable polymers, colorants, oxidation catalysts, and liquid carrier useful for coating an article to produce a finish which is capable of having a decorative pattern produced within it is provided.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Eustathios Vassiliou
  • Sound suppressor apparatus
    Patent number: 4168763
    Abstract: A ring of tubes extends inwardly from a noise suppressor housing wall sufficiently far to impinge upon the periphery of the high velocity core of a supersonic jet exhaust to disrupt the core and reduce the sound power generated. A large volume of outside cooling air is induced by jet pump action into the suppressor; and a portion of this cooling air is ducted through the tubes and into the exhaust stream to maintain the temperature of the tubes below an acceptable level to prevent their premature destruction.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: September 25, 1979
    Assignee: E. C. De Young, Inc.
    Inventors: Pritchard H. White, Eugene C. De Young
  • Product and process of preparing tetrafluoroethylene polymer aqueous dispersions
    Patent number: 4169087
    Abstract: Heretofore, the only practical way known to decrease the viscosity of an ionically thickened tetrafluoroethylene polymer dispersion has been by diluting it with water. This decreases the solids level, which can have an undesirable effect on subsequent processing. It has now been discovered that if the tetrafluoroethylene polymer dispersion contains a sodium phosphate in which the ratio of Na.sub.2 O to P.sub.2 O.sub.5 is between 1:1 and 3:1, the viscosity of the dispersion can be decreased by adding selected inorganic electrolytes.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: September 25, 1979
    Assignee: E. I. DuPont de Nemours and Co.
    Inventor: Robert F. Richter
  • Process for electrolytically producing chlorine in a cell having a diaphragm comprising hydrophilic fluoropolymers
    Patent number: 4169024
    Abstract: Certain fluoropolymers, when chemically modified by reacting them with sulfur or phosphorus containing compounds, become hydrophilic materials useful for making ion-exchange membranes, especially diaphragms for electrolytic cells, particularly chlor-alkali cells used in the production of chlorine, hydrogen and sodium hydroxide from brine.
    Type: Grant
    Filed: April 11, 1978
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James C. Fang
  • Bis(substituted amino)sulfides as reversible inhibitor sources for photopolymerization
    Patent number: 4168981
    Abstract: Photopolymerizable coating compositions which contain an ethylenically unsaturated polymerizable compound and a radiation sensitive, free-radical generating system are thermally stabilized to inhibit polymerization at elevated temperature without affecting room temperature photopolymerization by adding to the composition a bis(substituted amino)monosulfide or bis(substituted amino)polysulfide.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: September 25, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dennis S. Donald, Peter K. Sysak
  • Imidazole derivatives of 6,11-dihydrodibenz[b,e]oxepines and 6,11-dihydrodibenz[b,e]thiepines
    Patent number: 4169205
    Abstract: New imidazole derivatives of 6,11-dihydrodibenz[b,e]oxepines and 6,11-dihydrodibenz[b,e]thiepines have the general formula ##STR1## They and the salts thereof are useful as antifungal and antibacterial agents.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: September 25, 1979
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Hans Hoehn
  • Yarn consisting of drawn sintered PTF fibers and woven, non-woven and knitted fabrics; filter bags; ropes; and fire-protective clothing formed therefrom
    Patent number: 4168298
    Abstract: A process for forming polytetrafluoroethylene yarn by(1) forming an oriented polytetrafluoroethylene film by drawing a sintered sheet from about 5 to 30 times its original length at an elevated temperature; and(2) passing the oriented film through fibrillating means such as a high turbulent air velocity jet to form a yarn of entangled irregular shaped non-uniform staple fibrils.The yarn and woven, non-woven and knitted fabrics prepared from this yarn also are part of the invention.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: September 18, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Emerson B. Fitzgerald