Patents Assigned to E
  • Patent number: 4693941
    Abstract: Poly(ethylene terephthalate) compositions containing a small amount of a terpolymer of ethylene containing carboxyl groups, which may be partly or completely converted to a divalent metal salt form, and reinforced with a mineral material having an aspect ratio of at least 10 can be formed into sheets which are readily thermoformable at moderate pressures and have very good thermoforming radius ratios.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: September 15, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George J. Ostapchenko
  • Patent number: 4694045
    Abstract: A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro(alkyl vinyl ether) units wherein the alkyl group contains 1-5 carbon atoms, and (4) a cure-site monomer. Such fluoroelastomers are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: September 15, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Albert L. Moore
  • Patent number: 4693643
    Abstract: This planing device is operable for progressively planing or cutting the end of a plastic pipe to the desired length, or for reaming out a piece of plastic pipe fixed in a plastic pipe fitting in such a manner that the plastic pipe fitting can be reused. The pipe planing device is portable and is rotated by an electric drill or the like and includes a cylindrical pilot removably supported on radially spaced-apart spider-like cutter arms having cutter blades attached to their outer ends and extending outwardly beyond the cylindrical pilot a distance which is equal to the thickness of the plastic pipe to be cut or reamed. The outer circumference of the cylindrical pilot is dimensioned to provide a snug rotatable fit within the end of the plastic pipe to be planed and operates to center the planing device along the longitudinal axis of the plastic pipe.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: September 15, 1987
    Assignee: E&A Heyworth Enterprises, Inc.
    Inventor: Malcolm I. Heyworth
  • Patent number: 4694101
    Abstract: Methyl isocyanate can be separated in high yields from a gas-phase mixture of the isocyanate and water by sequentially condensing a major portion of the water, adsorbing essentially all the remaining water from the mixture, and liquefying the methyl isocyanate.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: September 15, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George E. Heinsohn
  • Patent number: 4694083
    Abstract: Disclosed herein is a process for preparing a compound having the formula ##STR1## which comprises sulfonating a compound having the formula ##STR2## with a complex having the formula ##STR3## and cyclizing the resulting compound having the formula ##STR4## by treatment with a base.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: September 15, 1987
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: William A. Slusarchyk, Tamara Dejneka
  • Patent number: 4694054
    Abstract: Free radical polymerization processes employing cobalt(II) chelates of vicinal iminohydroxyimino compounds, dihydroxyimino compounds, diazadihydroxyiminodialkyldecadienes and diazadihydroxyiminodialkylundecadienes as catalytic chain transfer agents for controlling the molecular weight of the homopolymers and copolymers produced.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: September 15, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Andrew H. Janowicz
  • Patent number: 4692211
    Abstract: High strength, cellulosic-gel-containing kraft paper is made by mechanically refining kraft papermaking pulp to a freeness of CSF 500-800, mixing the resulting refined pulp with from 1 to 10% hydrated cellulosic gel binder, running the resulting fluid mixture into a felted sheet and pressing and drying the sheet to form the kraft paper product.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 8, 1987
    Assignee: Eucatex S.A. Industria e Comercio of Sao Paulo
    Inventor: James R. Roberts
  • Patent number: 4692360
    Abstract: This invention relates to counter-current diffusion methods for depositing metals as interlayers within films.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lewis E. Manring, Stephen Mazur
  • Patent number: 4692387
    Abstract: Process for modifying in situ the electrical and/or optical properties of an electrochemically-deposited interlayer within a polyimide film, the interlayer being comprised of particulate silver and/or gold, by heating the interlayer, either in its entirety or in a spatially selective manner, so as to sinter the particulate silver and/or gold without adversely affecting the properties of the polyimide, and the film structure produced thereby.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Shymon Reich
  • Patent number: 4692083
    Abstract: A release mechanism for a side opening x-ray cassette uses an air jet to release the x-ray film from sticking and facilitating its removal from the cassette.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald F. LeRoux, Quayton R. Stottlemyer
  • Patent number: 4692455
    Abstract: Compounds of the formula ##STR1## wherein Y is oxygen or sulfur are disclosed. These compounds are useful as hypotensive agents due to their angiotensin converting enzyme inhibition activity and depending upon the definition of R.sub.1 may also be useful as analgesics due to their enkepahlinase inhibition activity.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: September 8, 1987
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Eric M. Gordon
  • Patent number: 4692446
    Abstract: Novel compounds of the general formula ##STR1## wherein R.sub.1 is lower alkyl, lower cycloalkyl, lower alkenyl, lower alkynyl, lower alkyl carboxymethyl, aryl carboxymethyl, aryl, or aralkyl; A is a direct bond, lower alkylene, or lower alkenylene; x is 1 or 2, provided that when x is greater than 1, different occurrences of the ##STR2## group may be the same or different; Ar is heterocyclic, unsubstituted aromatic or aromatic substituted with lower alkyl, lower alkenyl, lower alkynyl, lower alkoxy, halogen, acetamido, amino, nitro, lower alkylamino, hydroxy, lower hydroxyalkyl or cyano; W is alkylene containing from 1 to about 10 carbon atoms; and B is --NR.sub.2 COR.sub.3, --NR.sub.2 CONR.sub.3 R.sub.4, --NR.sub.2 SO.sub.2 R.sub.3, --NR.sub.2 SO.sub.2 NR.sub.3 R.sub.4, or --NR.sub.2 COOR.sub.5, wherein R.sub.2, R.sub.3, R.sub.4 and R.sub.5 may be the same or different and may be hydrogen, alkyl, alkoxyalkyl, alkoxyaryl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, or aralkyl, except that R.sub.3 and R.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours & Co., Inc.
    Inventors: Paul W. Erhardt, William L. Matier
  • Patent number: 4692481
    Abstract: An improved process for matching the color characteristics of a paint containing film forming binder, a liquid carrier, colored pigments and flake pigments to the color characteristics of a surface layer that contains flake pigments; the improvement comprises the following:adding to the paint a dispersion comprising a liquid carrier, a dispersing agent and transparent or semitransparent extender pigments or rigid or semirigid organic particles, particularly preferred are, hollow glass spheres, in an amount sufficient to match the color characteristics of the surface layer.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Renee J. Kelly
  • Patent number: 4692700
    Abstract: A probe for the continuous measurement of the thickness of strips of electrically conducting, magnetic or nonmagnetic strips of material, comprises a the measuring pole (7) arranged in a roller (4) with a narrow running surface. The roller (4) has a ring-shaped crowned middle part (9) in alignment with the measuring pole (7) and is pivoted on a fixed axis of rotation (10) on both sides of the measuring pole (7). The axis of rotation (10) forms part of a housing (12) which screens the measuring pole (7) against external magnetic fields. The roller (4) can consist of a suitable nonmagnetic material, such as nonmagnetic steel, bronze, titanium, ceramic, etc., and the probe can operate according to the magnetic inductive process, according to the eddy current process or according to a combination of these two processes.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: September 8, 1987
    Assignee: Elektro-Physik Hans Nix & Dr.-Ing. E. Steingroever KG
    Inventor: Hans F. Nix
  • Patent number: 4692549
    Abstract: Production of dialkyl adipate by reaction of butadiene, carbon dioxide, and a lower alkyl alcohol in the presence of a cobalt catalyst and a tertiary nitrogen base cocatalyst to form a liquid mixture containing alkyl 3-pentenoate, adding alkanoic acid to the mixture in an amount sufficient to keep the cobalt catalyst active, and then reacting the mixture to form dialkyl adipate. The acid addition increases the rate of reaction relative to catalyst deactivation rate and reduces the consumption of the tertiary nitrogen base cocatalyst.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold S. Bruner, Jr.
  • Patent number: 4692724
    Abstract: A high power tunable filter, for use in a frequency hopping system, is described and includes a transmission line having an input for receiving a high power level input signal to be filtered, and an output. The filter includes a plurality of resonators, each parallel-coupled to the transmission line, and driven by an associated electronic tuning network. Each of the electronic tuning networks includes a plurality of tunable reactive elements and PIN diodes, each PIN diode connected to one of the tunable reactive elements to enable this diode to connect its associated tunable reactive element in and out of the tuning network, thereby controlling the resonant frequency of the resonator associated with the tuning network. An electronic control circuit is also provided for controlling the frequency of the tunable filter.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: September 8, 1987
    Assignee: E-Systems, Inc.
    Inventor: Mark A. Harris
  • Patent number: 4691971
    Abstract: A cross-shaped retainer post with an oval longitudinal base which may break through when the ribs of the cross are stressed upon insertion into a locating hole.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Marlyn E. Hahn
  • Patent number: 4692636
    Abstract: Multiphase heterogeneous compositions containing polymeric material and pyrilium dye are illuminated by coherent optical light to generate second harmonic radiation. The compositions comprise a continuous phase of the polymeric material having therein a discontinuous phase comprising the pyrilium dye present in an aggregated ordered form.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ying Wang
  • Patent number: 4692528
    Abstract: Process for preparing analgesic and narcotic antagonistic isoquinolines comprising:(a) contacting and reacting a lithiated anisole or alkyl phenyl ether, optionally substituted at the 3-position to the lithium atom, with a 4-piperidone to yield a 4-aryl-4-piperidinol;(b) dehydrating the piperidinol to a 4-aryl-1,2,3,6-tetrahydropyridine;(c) metalating and acylating the 1,2,3,6-tetrahydropyridine to yield a 1-(4-aryl-1,2,3,4-tetrahydropyrid-4-yl)-4-hydroxy-1-butanone;(d) reducing the ketone moiety of the butanone to yield a 5-aryl-7-oxa-2-azabicyclo[3.2.1]-octane-6-propanol;(e) converting the alcohol moiety of the propanol to L to yield a 5-aryl-6-[3-(L)propyl]-7-oxa-2-azabicyclo[3.2.1]octane in which L is a leaving group selected from the group consisting of --Cl, --Br, --I, p-MeC.sub.6 H.sub.4 SO.sub.3 and MeSO.sub.3 --.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: September 8, 1987
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Ashokkumar B. Shenvi
  • Patent number: D291934
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: September 15, 1987
    Assignee: B e B S.r.l.
    Inventor: Carlo Bertani