Patents Assigned to E
  • Phenyl-substituted sulfonamides
    Patent number: 4802911
    Abstract: This invention relates to novel condensed ring sulfonylureas and their use as herbicides and growth regulants.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert J. Pasteris
  • Preparation of a protein fraction exhibiting cell growth-inhibiting activity
    Patent number: 4803163
    Abstract: A protein fraction isolated from tissue cultures of human diploid fibroblasts or lymphoblastoid cells inhibits the growth of heterologous human cells.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Diana Fahey, Ernest Knight, Jr.
  • Driver alerting device
    Patent number: 4803488
    Abstract: A driver alerting device includes a transceiver adapted for mounting at the rearward end of a vehicle for directing its wave output rearwardly of the vehicle. Return wave signals for many objects within the transceiver range are picked up and supplied to the transceiver by an antenna. Any resultant doppler shift signal is amplified for driving an audio alarm adapted for placement within the passenger compartment of the vehicle. The circuit is adapted for electrical connection to the back-up light circuit of the vehicle for activation only when the vehicle transmission is engaged in reverse gear.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: February 7, 1989
    Assignees: Steven F. Sommers, Bruce E. Schreiner, Land Paving Company, Omni Holding Company, Jerry Ronk, Robert Wichser
    Inventor: Anthony E. Dombrowski
  • Stabilized azeotrope or azeotrope-like composition of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol and 1,2-dichloroethylene
    Patent number: 4803009
    Abstract: A stabilized azeotrope or azeotrope-like composition is disclosed comprising an azeotrope or azeotrope-like composition of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol and 1,2-dichloroethylene and about 0.001 to 0.004 wt. percent of a lower alkoxyphenol, about 0.01 to 1.0 wt. percent 1,2-butylene oxide, about 0.01 to 1.0 wt. percent diisopropylamine and at least one of about 0.01 to 1.0 wt. percent nitromethane and about 0.01 to 1.0 wt. percent 1,2-propylene oxide, said wt. percents based on the weight of the azeotrope or azeotrope-like composition.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert A. Gorski
  • Composite cushion
    Patent number: 4803118
    Abstract: A composite cushion, useful for vehicle transportation, furniture and bedding, of foam having a fabric embedded therein which provides a spring function, good seating comfort and soft suspension, and which maintain its shape and desirable properties for a long period.
    Type: Grant
    Filed: April 8, 1988
    Date of Patent: February 7, 1989
    Assignees: E. I Du Pont de Nemours and Company, Toyo Tire & Rubber Company
    Inventors: Hidehito Sogi, Toshiyuki Hori
  • Method of warp knitting
    Patent number: 4802346
    Abstract: Warp-knit fabric having a two-course repeat pattern of alternating first and second bar yarns. The fabric is prepared by interlocking the first and second bar yarns using a combination of knit and layed-in stitches in opposite fashion.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Bahrat J. Gajjar
  • Combined carpet yarns by open end rotor spinning
    Patent number: 4802330
    Abstract: A method for manufacturing a combined yarn, by open end rotor spinning, suitable for use in carpets is disclosed.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul W. Yngve, Peter Artzt, Gerhard Egbers, Ullrich Stark, Heinz Muller
  • Process for preparing fluorine by electrolysis of calcium fluoride
    Patent number: 4802970
    Abstract: A process for producing fluorine from calcium fluoride in which calcium fluoride is dissolved in a molten salt electrolyte containing an alkali metal tetrafluoroborate and the melt is electrolyzed at a temperature below 400.degree. C.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gleb Mamantov
  • Recovery of bis(hexamethylene)triamine
    Patent number: 4803304
    Abstract: Recovery of bis(hexamethylene)triamine from still heels of hexamethylenediamine by extraction using an aliphatic hydrocarbon having a boiling point between about 34.degree. C. and 210.degree. C.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert A. Smiley
  • Herbicidal 2-(1H)-pyrazinones
    Patent number: 4802908
    Abstract: This invention relates to a novel class of 2-(1H)-pyrazinones and their use as herbicides and plant growth regulants.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Criag L. Hillemann
  • Herbicidal ortho-sulfonamide benzenesulfonylureas
    Patent number: 4802906
    Abstract: Ortho-Sulfonamide benzenesulfonylureas, such as N-cyclopropyl-N'-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-1,2-benzened isulfonamide, are useful as pre-emergent and post-emergent herbicides.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Donald J. Dumas
  • Microcrack resistant composites
    Patent number: 4803101
    Abstract: Microcrack resistant composites are prepared by precoating and prepregging woven fabrics of poly(phenylene terephthalamide) fiber at low warp tension.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I Du Pont De Nemours and Company
    Inventors: Beverly K. Roberts, George E. Zahr
  • S-modified adenosyl-1,8-diamino-3-thiooctane derivatives
    Patent number: 4803272
    Abstract: S-Modified Adenosyl-1,8-Diamino-3-Thiooctane derivatives which are useful as interferon potentiators and polyamine biosynthesis inhibitors are disclosed.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: February 7, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David L. Anton, Bruce D. Korant, Chia-Lin J. Wang
  • Process for producing polyarylethers by forming an alkylated intermediate
    Patent number: 4801657
    Abstract: Two step process for preparing high molecular weight, high melting polyarylethers by polycondensing an alkyl-substituted dihydric phenol and an aromatic dihalide, and thereafter dealkylating the polycondensation product.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Wilhelm K. Risse
  • Process for preparing a photographic emulsion containing tabular grains exhibiting high speed
    Patent number: 4801522
    Abstract: Process for preparing a photographic emulsion containing tabular silver halide grains, which exhibit high speed upon sensitization, having a thickness of about 0.05 to 0.5 .mu.m, average grain volume of about 0.05 to 1.0 .mu.m.sup.3 and mean aspect ratio of greater than 2:1 comprisingA. adding silver nitrate to a vessel containing dispersing medium/bromide mixture, initial bromide ion concentration 0.08 to 0.25 N, to form tabular seed grains;B. adding an ammoniacal base solution, to achieve 0.002 to 0.2 normal of the base (e.g., after at least 2% of total silver nitrate has been added); andC. adding additional silver nitrate and halide, e.g., Br.sup.- or BrI.sup.-, by balanced double jet procedure. The emulsions are used in photographic elements for x-ray, graphic arts, etc.
    Type: Grant
    Filed: March 23, 1988
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Charles D. Ellis
  • 2-oxo-1-(((substituted sulfonyl)amino)-carbonyl)azetidines
    Patent number: 4801705
    Abstract: Antibacterial activity is exhibited by .beta.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: January 31, 1989
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Hermann Breuer, Jakob-Matthias Drossard, Peter H. Ermann, Henner Straub, Uwe D. Treuner
  • Ionomers having improved low temperature properties and blends thereof with thermoplastic resins
    Patent number: 4801649
    Abstract: Ionomers of ethylene, unsaturated carboxylic acid and softening comonomer, e.g. alkyl acrylate and/or alkyl vinyl ether having improved low temperature properties are obtained by direct or graft copolymerization at a temperature of from about 100.degree. to about 200.degree. C., followed by neutralization of the carboxylic acid groups with metal ions, such ionomers being characterized by a low level of chain branching of up to about 5.5 chain branches/1000 backbone methylene units.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert J. Statz
  • Process for the preparation of octahedral silver chloride-containing emulsions
    Patent number: 4801523
    Abstract: Process for preparing photographic emulsion comprising bringing aqueous silver and chloride-containing halide salt solutions into contact in the presence of a dispersing medium to form octahedral silver halide grains having a halide content of at least 50 mole percent chloride, based on total moles of silver present, the improvement forming the grains in the presence of a crystal modifying amount of an aminoazapyridine as described in pH range of 2.5 to 9, pCl range of 0 to 3, the aminoazapyridine compound being added after at least about 6% to about 45% of the silver salt solution has been added.The photographic emulsion is useful in x-ray, laser scanner films, as color separation elements and inverse transfer systems, etc.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas P. Tufano
  • Dispensing device for radionuclide generators
    Patent number: 4801047
    Abstract: A dispensing device for a radionuclide generator includes an eluant container, a receptacle for receiving the container, the receptacle being in sliding engagement with a support, a hollow needle which pierces the elastic stopper of the container so that the tip of the needle penetrates into the container, and a fixing device for holding the needle at a distance from its tip. The volume dispensed from the container is controlled by shifting the receptacle up or down within the support along the longitudinal axis of the needle.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: January 31, 1989
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Bernd Klatte, Vencenzo Ferme, Fritz Herrmann, Hans-Gerd Hebborn, Oskana Poliwczyk
  • Preparation of acrylonitrile
    Patent number: 4801731
    Abstract: An improved process for the preparation of acrylonitrile by the reaction of propylene, ammonia and oxygen in a fluidized catalyst bed in which the propylene and ammonia are premixed and fed in downwardly streams that are directly aligned with upwardly directed streams of an oxygen containing gas under conditions such that there is complete mixing of the gas streams prior to the gases having significant contact with the catalyst.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen P. Jordan