Patents Assigned to E
  • Patent number: 4341761
    Abstract: Antibodies to the twenty-one acid peptide: (X-Ser-Tyr-Asn-Leu-Leu-Gly-Phe-Leu-Gln-Arg-Ser-Ser-Asn-Phe-Gln-Y-Gln-Lys-L eu-Leu).sub.n, where X is Met or Ser, Y is His or Cys and n is 1 to 12; peptide/protein conjugates and antibodies thereto; process for producing the antibodies; and processes for assaying human fibroblast interferon and for purifying it.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: July 27, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David J. Ganfield, Michael W. Hunkapiller, Ernest Knight, Jr., Bruce D. Korant
  • Patent number: 4341605
    Abstract: A cation permeable membrane containing areas of thin wall construction comprises a cation exchange polymer matrix having a reinforcement fabric embedded therein.A two-step lamination procedure is described where holes are formed in a film of laminated polymer prior to a second lamination step.The cation permeable membrane has utility in membrane ion exchange, reverse osmosis devices or in electrolytic cells such as chlor-alkali cells.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: July 27, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John C. Solenberger, Michael S. Withers
  • Patent number: 4341743
    Abstract: The oxidation and extraction steps in the vanadium stripping process (e.g., the DEPA-TOPO or DOPPA-TOPO process) are carried out simultaneously for recovering vanadium from wet-process phosphoric acid.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: July 27, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Frederick N. Tebbe
  • Patent number: 4341772
    Abstract: S-(Diarylamino)thiophosphates are useful as miticides, insecticides, fungicides and ovicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: July 27, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gary D. Grantham
  • Patent number: 4341710
    Abstract: A method is provided for preparing compounds of the formulae ##STR1## wherein A may be --C.dbd.C-- or --C.tbd.C--, by reducing an epoxy lactone of the structure ##STR2## to form the corresponding epoxy hemiacetal, reacting the epoxy hemiacetal with a silyl compound to form an epoxy silyl acetal, reacting the epoxy silyl acetal with an acetylenic derivative to form a silyl acetal, removing the silyl protecting group to form a hemiacetal, reacting the hemiacetal compound with an appropriate Wittig reagent to form a protected difluoro PGF.sub.2.alpha. type compound, removing the protecting group, reacting the difluoro PGF.sub.2.alpha. with an iodine compound to form an iodoether and reacting the iodoether with a base to form the desired compounds.Novel intermediates produced in the above method are also provided.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: July 27, 1982
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Martin F. Haslanger
  • Patent number: 4341442
    Abstract: In manufacturing optical transmission filters having double-refraction elements, extreme care is usually necessary to provide the desired phase delay. To simplify the manufacturing process while still achieving accurate phase delay, a filter is provided with at least one double-refraction element comprising a single-mode optical filter mounted between polarizers. The double refraction of the optical fiber is sufficiently weak so that the .lambda. length within which light beams propagating with orthogonal polarization states in the fiber are mutually delayed by 2.pi., is at least 1 cm. In one embodiment, the optical fiber comprises alternating sections which produce linear double refraction with sections which produce elliptical double refraction.
    Type: Grant
    Filed: February 26, 1980
    Date of Patent: July 27, 1982
    Assignee: Max-Planck-Gesellschaft zur Forderung d. Wissenschaften e. V.
    Inventor: Mark Johnson
  • Patent number: 4340559
    Abstract: Improved aromatic polyamide fibers from aromatic polyamides whose chain-extending bonds are either coaxial or parallel and oppositely directed are obtained by dry spinneret wet spinning into a shallow coagulating bath having an orifice in its bottom for removal of coagulating liquid and fibers wherein no more than a minor portion of coagulating liquid is lower than the entrance of the bath orifice in the proximity of the bath orifice. Preferably, no more than 10% of the coagulating liquid is lower than the entrance of the bath orifice and most preferably none of the coagulating liquid is lower than the entrance of the bath orifice.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hung H. Yang
  • Patent number: 4340550
    Abstract: Preparation of free-flowing pellets of ethylene terephthalate oligomer by water quenching droplets of molten oligomer.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chungfah H. Ho
  • Patent number: 4340719
    Abstract: Oligomeric formal diols are prepared by coupling segments of PTMEG, each having a molecular weight of 1000-3000, with formaldehyde. The formal diols are useful in preparing polyurethanes.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Engelbert Pechhold
  • Patent number: 4340143
    Abstract: A hydraulic bean cleaner for removing rocks from beans has a hopper for gravity-feeding uncleaned beans down an inner cylindrical tube into a cylindrical separator tank. The inner tube has a bean discharge opening centered just above the bottom of the tank. An outer cylindrical tube concentrically surrounds the inner tube, providing an annular passageway therebetween and a water discharge opening surrounding the bean discharge opening. A first vibrator vibrates the tubes as a unit to help feed the beans down the inner tube. A second vibrator vibrates the hopper independently of the tubes to aid in feeding the beans to the inner tube. The beans drop into the bottom of the tank and water is expelled downwardly into the tank around them. The water entrains and fluidizes the beans, carrying them laterally away from the bean discharge opening and buoying them upwardly. The turbulent flow of water agitates the beans.
    Type: Grant
    Filed: January 2, 1980
    Date of Patent: July 20, 1982
    Assignee: Russell E. Waddle
    Inventors: Jerome F. Moshofsky, Jerry Trout
  • Patent number: 4340527
    Abstract: Spandex fiber made from a segmented polyurethane polymer is provided with improved resistance to chlorine-induced degradation, by the inclusion of finely divided zinc oxide particles having a purity of at least 99.4% dispersed in the fiber.
    Type: Grant
    Filed: August 14, 1981
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kenneth E. Martin
  • Patent number: 4340606
    Abstract: This invention relates to novel 3-(p-alkylsulfonylphenyl)oxazolidinone derivatives, pharmaceutical compositions containing them and methods of using them to alleviate bacterial infections in mammals.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert B. Fugitt, Raymond W. Luckenbaugh
  • Patent number: 4340665
    Abstract: Spots due to iron contamination in developed silver halide films are reduced in number by incorporating therein a phosphate and trisodium hydroxyethylethylenediaminetriacetate.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Lloyd G. Sidwell
  • Patent number: 4339890
    Abstract: A dry seeding mulch having finely shredded or ground particles of waste paper mixed with a dry powdered chemical wetting agent and injected, after bagging, with a concentrated dye mixture which imparts color to the entire bag of mulch when mixed with water by the ultimate user. The mulch is produced by grinding or shredding waste paper into finely divided particles and mixing the finely divided particles of waste paper with a dry chemical wetting agent in the form of a powder. The dry mixture of paper particles and powdered chemical wetting agent is bagged for shipment and then injected with a concentrated chemical dye which produces only localized coloring at the point of injection. The entire contents of bag are colored by the dye when the ultimate user to whom the bag has been shipped mixes the dry mulch with water.
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: July 20, 1982
    Assignees: Bruce E. Koenig, Thomas E. Niswander
    Inventors: Bruce E. Koenig, Thomas E. Niswander
  • Patent number: 4340741
    Abstract: An improved process for preparing a vinyl oxazoline drying oil ester by reacting drying oil fatty acids with tris(hydroxy methyl) amino methane to form an intermediate which is further reacted at about 175.degree.-190.degree. C. with a formaldehyde/alcohol solution to form the vinyl oxazoline drying oil ester; the improvement used with this process is the use of at least 3 moles of formaldehyde to one mole of intermediate and about 1-5% by weight, based on the weight of the intermediate, of methanol and adding after the reaction with formaldehyde about 5-25% by weight, based on the weight of the ester solution, of an alcohol, a ketone or a mixture of an alcohol and a ketone; polymers of this ester and coating compositions of these polymers are also disclosed.
    Type: Grant
    Filed: December 1, 1980
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph A. Vasta
  • Patent number: 4340872
    Abstract: A continuously variable delay line (10) includes a piezoelectric crystal (12) having an input transducer (14) and an output transducer (16). An input signal is transmitted through input lines (18) to the input transducer (14) and received through output lines (20) from the output transducer (16). The input signal is converted to a surface acoustic wave for transmission across the surface of crystal (12). Control electrodes (22 and 24) are applied to surfaces of the crystal (12) and are connected to control lines (26). A control signal is applied to the control lines (26) to apply an electric field to the crystal (12). The electric field thus applied alters the longitudinal dimensional characteristic of the crystal (12) and thereby controls the propagation distance between the input transducer (14) and the output transducer (16).
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: July 20, 1982
    Assignee: E-Systems, Inc.
    Inventor: Larry D. Alter
  • Patent number: 4339926
    Abstract: A vortex tube has a vortex generator portion in the form of a right circular cylindrical re-entrant cavity having end walls defining a right circular cylindrical volume therewithin with a nozzle means separating such volume from the remainder of the cavity. Pressurized air or other gas is introduced into the cavity through an appropriate coupling and is caused to swirl by the nozzle means to produce a vortex within such volume. A stream of higher temperature gas is coupled from one side of the vortex generator by a tube of given length and diameter smaller than the diameter of the vortex volume and a stream of lower temperature gas is coupled from the other side of the vortex generator through an opening of smaller diameter than the tube. Longitudinally extending grooves in the inner surface of the distal end portion of the tube enable a given temperature differential between the high and low temperature streams to be obtained with a tube of reduced length.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: July 20, 1982
    Assignee: E. D. Bullard Company
    Inventors: Anthony L. Moretti, Lester W. Ferris
  • Patent number: 4340413
    Abstract: In a glassware forming machine, a non-handed transfer mechanism, for transferring freshly-formed hot glassware, by swinging through a right angle about a vertical axis, from a dead plate to an adjacent conveyor, comprises a side-by-side parallel pair of rams having pistons on the free ends of which is a pusher plate. A piston stop bar is located centrally of the pistons and is connected to a piston tie plate for arresting the pusher plate and pistons at the end of an extending stroke of the pistons.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: July 20, 1982
    Assignee: E. R. Lattimer Limited
    Inventor: Roger G. Rowland
  • Patent number: 4340686
    Abstract: Flexographic printing plates are prepared from photosensitive elastomeric compositions which comprise(1) about 15 to about 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder,(2) about 10 to about 70 percent by weight of a compatible monomer, and(3) about 0.1 to about 10 percent by weight of a free-radical generating system.
    Type: Grant
    Filed: January 13, 1981
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert P. Foss
  • Patent number: 4340141
    Abstract: A unit dose drug control package is provided for the control and accountability of drugs where there is such a need such as narcotics. The package is foldable into a compact, interlocking package, has a plurality of individually removable and identifiable unit drug dose packages, and has a pocket for a product brochure and for returning a unit drug dose package once it has been separated from the package.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: July 20, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Arthur Fischer