Patents Assigned to E
  • A method of making a clamping ring for use in a pipe joint
    Patent number: 4706529
    Abstract: A clamping ring for use in pipe joints has an inside surface which is formed with generally peripherally extending indentations for axially fixing a pipe. In order to prevent an occurrence of dangerous stress concentrations in pipes in contact with such clamping rings and to permit such rings to be manufactured economically, the clamping ring is formed on its inside surface with a multiplicity of generally peripherally extending indentations, each of which extends only along part of the periphery of said inside surface, and said indentations are offset from each other in said peripheral directions and adjoint or overlap.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: November 17, 1987
    Assignee: E. Hawle & Co.
    Inventor: Erwin Hawle
  • Metallic soap as adjuvant for electrostatic liquid developer
    Patent number: 4707429
    Abstract: Electrostatic liquid developer consisting essentially of(A) nonpolar liquid having Kauri-butanol value less than 30, present in major amount,(B) thermoplastic resin particles having a metallic soap as defined dispersed therein and average particle size by area being less than 10 .mu.m, and(C) nonpolar liquid soluble ionic or zwitterionic charge director compound. Optionally a colorant and charge adjuvant are present. The electrostatic liquid developer is useful in copying, making proofs including digital color proofs, lithographic printing plates, and resists.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: November 17, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Torence J. Trout
  • Drill bit assembly
    Patent number: 4706765
    Abstract: A drill bit assembly comprised of a pilot bit and a plurality of add-on reamer sections which are sized to progressively increase the diameter of the hole in measured increments. Both the pilot bit and the reamer sections have two cutter elements which take advantage of the bi-center concept and both use knife edged cutters instead of teeth to drill the hole.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: November 17, 1987
    Assignee: Four E Inc.
    Inventors: Ernie J. Lee, William L. Thornton
  • Synthetic water-dispersible fiber
    Patent number: 4707407
    Abstract: Water-dispersible synthetic fiber of scalloped-oval cross-section to promote dispersibility, and so better uniformity, softer feel and more opacity to the resulting wet-laid fabrics.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: November 17, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John T. Clark, Donald A. Shiffler
  • Method for doping tin oxide
    Patent number: 4707346
    Abstract: The invention is directed primarily to a method of doping tin oxide with Ta.sub.2 O.sub.5 and/or Nb.sub.2 O.sub.5 using pyrochlore-related compounds derived from the system SnO--SnO.sub.2 --Ta.sub.2 O.sub.5 --Nb.sub.2 O.sub.5 for use in thick film resistor compositions. The invention is also directed to thick film resistors containing the above-described pyrochlore-related compounds and to various compositions and methods for making such thick film resistors.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: November 17, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jacob Hormadaly
  • 7-oxabicyclo(2.2.1)heptane compounds useful in the treatment of inflammation
    Patent number: 4707494
    Abstract: 7-Oxabicyclo(2.2.1)heptane analogs are disclosed having the general formula ##STR1## wherein R.sub.1 is lower alkyl, alkenyl, substituted alkenyl or alkynyl; R.sub.2 is lower alkyl, alkenyl or alkynyl; A is --CH.sub.2 --CH.dbd.CH-- or a single bond; X is --CH.sub.2, --CH(CH.sub.3) or --C(CH.sub.3).sub.2 ; n is an integer from 0 to 9, with the proviso that when A is a single bond, n is an integer from 1 to 9; including all stereoisomers.These new compounds have been found to be inhibitors of arachidonic acid cyclooxygenase and are therefore useful as antiinflammatory antipyretic and analgesic agents.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: November 17, 1987
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Ravi K. Varma, Carl P. Ciosek, Eric M. Gordon
  • Herbicidal ortho-heterocyclic sulfonamides
    Patent number: 4707179
    Abstract: Herbicidally active pyridinesulfonamide compounds having an ortho cyclic saturated or partially saturated group which includes a carbonyl or sulfonyl radical display utility as herbicides and plant growth regulants.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: November 17, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark E. Thompson
  • Pivoted caster wheel and yoke brake having a detent
    Patent number: 4706328
    Abstract: An improved caster construction wherein a brake is provided for selectively braking both the wheel against rotation and the yoke against rotation around the axis of the post of the caster. The post includes a lower end having a nut fixed thereto and the brake includes a brake plate having a socket for selectively engaging the nut to prevent rotation of the yoke about the axis of the post.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: November 17, 1987
    Assignee: E. R. Wagner Mfg. Company
    Inventor: Jeffrey J. Broeske
  • Substrates with sterically-protected, stable, covalently-bonded organo-silane films
    Patent number: 4705725
    Abstract: This invention relates to unique stable support structures comprising substrates coated with sterically-protecting monofunctional silanes. This structure consists of an appropriate reactive solid to which a monofunctional silane is covalently bonded that contains at least two sterically-protecting groups attached to the silicon atom of the silane.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph L. Glajch, Joseph J. Kirkland
  • Continuous hydrocyanation process using zinc halide promoter
    Patent number: 4705881
    Abstract: Process for production of dinitriles using zero-valent nickel catalysts having low ligand ratio, and low amounts of zinc halide as the promoter.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Morris Rapoport
  • Multi-roll web support arrangement
    Patent number: 4704803
    Abstract: A coated web drive uses a cluster of support and blotting rollers, the latter being switch to contact the web and dry wet portions of the web which typically occur at splices.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jose E. Valentini
  • Capacitive devices for measuring the diameter of a dielectric fiber
    Patent number: 4706014
    Abstract: The improvements relating to capacitive devices for measuring the diameter of a dielectric fiber are based on a particular shaping of the capacitor plates, such as to allow electric field reductions at the edges to be compensated for and hence capacitance measurements to be unaffected by fibre vibrations.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: November 10, 1987
    Assignee: CSELT - Centro Studi e Laboratori Telecomunicazioni S.p.A.
    Inventor: Bruno Fabbri
  • Aminomethyl oxooxazolidinyl benzenes useful as antibacterial agents
    Patent number: 4705799
    Abstract: Novel aminomethyl oxooxazolidinyl benzene derivatives, including the sulfides, sulfoxides, sulfones and sulfonamides, such as (l)-N-[3-[4-(methylsulfinyl)phenyl]-2-oxooxazolidin-5-ylmethyl]acetamide, possess useful antibacterial activity.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Walter A. Gregory
  • False twisted differential tension yarn
    Patent number: 4704856
    Abstract: A continuous multifilament crimped polyamide or polypropylene yarn suitable for use in loop pile carpeting and the process for making the yarn including feeding the yarn at different tensions and then treating the yarn with saturated steam is disclosed.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas L. Nelson
  • Herbicidal pyrazolesulfonamides
    Patent number: 4705558
    Abstract: This invention relates to novel pyrazolesulfonamides, agricultural compositions thereof and the methods of their use as general and/or selective herbicides and/or plant growth regulants.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen L. Hartzell
  • Zero insertion force connector
    Patent number: 4705338
    Abstract: A zero insertion force connector for a printed circuit card. The connector has opposed rows of terminals having normally spaced contacts at the ends of outwardly bowed portions. Cams and followers are located beneath the bowed portions in positions where the followers can engage the bowed portions, engage the contacts with an inserted card and then stress the bowed portions, supplying contact normal force and contact wipe.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Fred C. Sitzler
  • Polyimide covered calender rolls
    Patent number: 4705711
    Abstract: Calender roll comprising a cylindrical metal shaft bearing a polyimide cover, wherein the shaft is knurled to eliminate slippage between the shaft and the cover.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dominic R. Perna
  • Herbicidal sulfonamides
    Patent number: 4705556
    Abstract: This invention relates to novel herbicidally active sulfonylurea compounds substituted in the positions ortho to the sulfonylurea bridge, agriculturally suitable compositions thereof and methods of their use as preemergent or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mary A. Hanagan
  • Polyimide gas separation membranes
    Patent number: 4705540
    Abstract: A highly permeable aromatic polyimide gas separation membrane and the process of using it are disclosed. The aromatic polyimide has the formula ##STR1## wherein --Ar-- is ##STR2## or mixtures thereof, --X, --X.sub.1, --X.sub.2 and --X.sub.3 independently are alkyl groups having 1 to 6 carbon atoms or aromatic groups having 6 to 13 carbon atoms, and --Z is --H, --X, --X.sub.1, --X.sub.2, or --X.sub.3 ; and R is ##STR3## or mixtures thereof.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: November 10, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard A. Hayes
  • Boronic acid adducts of technetium-99m dioxime complexes
    Patent number: 4705849
    Abstract: Boronic acid adducts of technetium-99m dioxime complexes are useful for imaging the myocardium, hepatobiliary system, brain and blood pool in humans and other mammalian species.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: November 10, 1987
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Adrian D. Nunn, Thomas A. Feld, Elizabeth N. Treher