Patents Assigned to E
  • Method for eluting adsorbed gold from carbon
    Patent number: 4968346
    Abstract: Gold in a very dilute water solution is carbon filtered to capture the gold by adsorption; the gold in the filter is then recovered from the carbon by means of a highly-efficient non-explosive low-alcohol water-based eluant including a strong base and an elevated level of sodium or potassium cyanide.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: November 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Anthony L. Belsak, Narendrakumar C. Desai, Thomas F. McConnell, Curt A. Williams
  • Apparatus for making a non-woven sheet
    Patent number: 4968238
    Abstract: A device to detect the loss of a continuous spun web of plexifilament fibers exiting a forwarding apparatus depends on the manner in which the filaments oscillate in a cross machine direction prior to depositing onto a collecting surface. The loss of these fibers, due to hang up in the filament forwarding device, can cause multiple position spinning machine loss due to the knock down of nearby spinning positions or wrap the sheet on forwarding rolls. The hang up in the forwarding device is referred to as a blow-up. This invention detects the instant a blow-up occurs through the loss of electrostatic charge due to the absence of the oscillating swath at the sensor. When the instant charge is lost at the sensor, a signal indicates a blow-up has occurred.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: November 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard A. Satterfield, David M. Taylor
  • Catalyzed hydrofluorination process
    Patent number: 4967024
    Abstract: Process of the preparation of highly fluorinated alkanes by contacting halogenated alkenes or alkanes with at least the molar equivalent of HF in the presence of a catalyst selected from TaF.sub.5 and NbF.sub.5 in an amount of at least 0.25 molar equivalent at a temperature of 0.degree. C. to 175.degree. C.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William H. Gumprecht, Wesley G. Schindel, Vinci M. Felix
  • Adaptive processing system having an array of individually configurable processing components
    Patent number: 4967340
    Abstract: An adaptive processing system for real-time signal processing of one or more input signals in parallel-pipeline fashion is provided. According to the invention, the adaptive processing system includes a random access processor having an array of processing elements each being individually configurable. A man-machine interface receives instructions defining how an input signal is to be processed by the random access processor. A configuration controller responsive to the interface is used to generate configuration data defining a configuration of the random access processor, and data flow between contiguous processing elements thereof, for enabling processing of the input signals according to the insructions. The random access processor is configurable into one or more individually addressable processing arrays which may perform linear or nonlinear operations on an input signal.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: October 30, 1990
    Assignee: E-Systems, Inc.
    Inventor: Robert L. Dawes
  • Texturing polyester yarns
    Patent number: 4966740
    Abstract: Modifying a polyester with tetraethyl silicate or like oxysilicon chain-brancher to provide a draw-texturing feed yarn that can be draw-textured at a speed of at least 500 mpm without excessive filament breaks, and with other advantages in the resulting textured yarns, such as improved bulk and dyeability over unmodified polyester yarns textured under similar conditions, and preferably without sacrificing dye uniformity.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Cecil E. Reese
  • Nonlinear optical devices from derivatives of stilbene and diphenylacetylene
    Patent number: 4966730
    Abstract: Certain derivatives of stilbene and diphenylacetylene are capable of second harmonic generation when illuminated by coherent optical radiation.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert A. Clement, Wilson Tam, Ying Wang
  • Nylon compositions for blowmolding
    Patent number: 4966941
    Abstract: It has now been found that a unique combination of additives makes semi-crystalline polyamides readily processible by extrusion blowmolding to make hollow, stiff parts of various shapes. The compositions consist essentially of semicrystalline polyamide, a selected toughening agent and an anhydride-rich ethylene copolymer, and a fibrillar polytetrafluoroethylene.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Pallatheri M. Subramanian
  • Modular multilevel article of furniture
    Patent number: 4966341
    Abstract: A support structure for office tables and desks is constituted of a cylindrical connecting element having a substantially horizontal axis, equipped with a plurality of lateral connectors, to some of which there are connected two or more pairs of inclined legs, diverging downwards at least in a vertical plane perpendicular to the axis of the connecting element. A plurality of support elements are connected to said legs and/or said tubular body for one or more working planes, projecting horizontally and transversely and/or oblique with respect to the axis of the connecting element. At the upper ends of the legs connector members can be provided to which there may be attached pairs of uprights carrying an upper plane and/or other members raised above the working plane.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: October 30, 1990
    Assignee: Tecno S.p.A. Mobili e Forniture per Arredamento
    Inventor: Paolo Borsani
  • Oriented polymeric tape
    Patent number: 4966950
    Abstract: Oriented polymeric tape of a blend of copolyetherester and polyethylene terephthalate characterized by excellent fray resistance, and a process for its preparation.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Teh-Chuan Wang
  • Process for increasing the molecular weight of a polyamide with p containing catalyst
    Patent number: 4966949
    Abstract: This invention relates to an improved process for increasing the molecular weight of a polyamide.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert C. Wheland
  • Process for fluorinated allenes
    Patent number: 4967022
    Abstract: Processes for the preparation of perfluoroalkyl substituted allenes and novel bis-allenyl substituted perfluoroalkanes are disclosed.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Oculoselective beta-blockers as antiglaucoma agents
    Patent number: 4966914
    Abstract: In accordance with the present invention, disclosed herein are compounds of the formula ##STR1## wherein R is hydrogen, straight or branched loweralkyl, cycloalkyl, amino, loweralkoxy or acylamino, and R.sub.1 is straight or branched loweralkyl, amino, cyclohexyl phenyl or phenyl substituted with loweralkyl, loweralkoxy or halo, benzyl, morpholino, piperidino, tetrahydrofuranyl, dihydrofuranyl, furanyl, tetrahydropyranyl, dioxolanyl, 2,2-dimethyl dioxolanyl, dioxanyl, pyrrolidinyl, tetrahydrooxazolyl, and dihydrooxazolyl, R.sub.2 is hydrogen or --COR.sub.3 wherein R.sub.3 is straight or branched loweralkyl, provided, however, when R.sub.1 is loweralkyl or cyclohexyl, R.sub.2 is not hydrogen, and pharmaceutically acceptable salts thereof. The compounds are useful in the treatment of glaucoma.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ghanshyam Patil, William L. Matier, Khuong H. X. Mai
  • Non reusable disposable capsule containing an individual vaccine dose to be hypodermically injected with a pressure needleless injection apparatus
    Patent number: 4966581
    Abstract: This invention related to a simple device for hypodermic pressure-injection which does not make use of needles for introducing the vaccine into the patient's body, and which is fully constituted by low cost disposable material self-destroying after being utilized a single time. This device already contains within it, a single metered dose of vaccine or medication to be injected and, when in use, it comprises solely four elements; and injector nozzle with an outlet orifice, a sealing disc, a cylindrical body and the dose itself of vaccine to be injected.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: October 30, 1990
    Assignee: Vitajet Industria E. Commercio Ltda
    Inventor: Sergio Landau
  • Fiber creel humidification
    Patent number: 4966017
    Abstract: A process and apparatus for supplying never-dried yarns from a humidified creel to maintain a constant and controlled amount of moisture on the yarns and, thereby, assure that the supplied yarns are maintained at a constant quality for further processing.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Terry S. Chern
  • Encapsulant composition
    Patent number: 4966926
    Abstract: An encapsulant composition comprising a lead zinc silicoborate glass which forms a crystalline phase of Zn.sub.2 SiO.sub.4 and ZnB.sub.2 O.sub.4 when it is fired at 650.degree.-800.degree. C.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: October 30, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Paul C. Donohue
  • Stain resistant polymers & textiles
    Patent number: 4965325
    Abstract: Synthetic polyamide textile substrate having deposited thereon a modified polymeric sulfonated phenol-formaldehyde condensation product comprising one (a) in which 10 to 25% of the polymer units contain SO.sub.3 (-) radicals and about 90 to 75% of the polymer units contain sulfone radicals and (b) in which a portion of the free hydroxyl groups thereof has been acylated or etherified, the number of said hydroxyl groups which has been acylated or etherified being sufficient to inhibit yellowing of said condensation product but insufficient to reduce materially the capacity of said condensation product to impart stain resistance to said synthetic polyamide textile substrate.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: October 23, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Theodor A. Liss, Leonard H. Beck
  • Securing an outlet pipe or tap to a liquid-containing bag
    Patent number: 4964856
    Abstract: An outlet pipe or tap is secured to a liquid containing bag by trapping the bag outlet region between inner and outer nested funnels. A leak proof seal is provided by disposing an O-ring sealing means between the funnels and moving one funnel axially relative to the other.
    Type: Grant
    Filed: November 24, 1989
    Date of Patent: October 23, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Peter L. Steer
  • Pedestral lavatory
    Patent number: D311769
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: October 30, 1990
    Assignee: Celite S.A. Industria E Comercio
    Inventor: Waldemar Nosari
  • Methods of using crystalline fructose
    Patent number: H847
    Abstract: Methods of using fructose as a sweetener, particularly crystalline fructose, are disclosed. Also disclosed are methods of using dry foodstuff mixes containing fructose in a crystalline form to prepare foods for consumption while hot or cold. Further, the use of fructose and acidulants to obtain a foodstuff of desired sweetness is also disclosed. The consistent sweetness of fructose over temperature, regardless of the distribution of anomeric forms thereof, and the varying effect different acidulants have on the sweetness of fructose are also disclosed.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: November 6, 1990
    Assignee: A. E. Staley Manufacturing Company
    Inventors: Dorothy C. White, John S. White
  • Rodenticidal composition
    Patent number: H852
    Abstract: A method for stabilizing a rodenticidally active material selected from certain (i) indane dione derivatives, (ii) hydroxycoumarin derivatives and (iii) thiocoumarin analogs of (ii), comprising bringing said active material into contact with, and maintaining the active material in contact with, an acidic stabilizer.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: November 6, 1990
    Assignee: E. I. Du Pont de Nemours and Company, Inc.
    Inventors: Alan R. Garden, Malcolm R. Hadler