Patents Assigned to E
  • Chromans including heterocyclic substituent
    Patent number: 4452801
    Abstract: The invention relates to chroman derivatives of the general formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, substituted phenyl, phenyl, phenyl-lower alkyl, substituted phenyl-lower alkyl or lower alkyl-amino-lower alkyl;R.sub.2 is ##STR2## R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each is independently selected from hydrogen, hydroxy, amino, -o-acyl, -o-lower alkyl; ##STR3## halogen, lower alkyl, or halo substituted lower alkyl; and salts and hydrates thereof.These compounds are useful as anti-inflammatory agents; for inhibition of blood platelet aggregation, as antiallergy and as antihypertensive agents.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: June 5, 1984
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Joseph E. Sundeen
  • Aminoalkyl and related substituted phosphinic acid angiotensin converting enzyme inhibitors
    Patent number: 4452791
    Abstract: Compounds of the structure ##STR1## are provided which are inhibitors of angiotensin converting enzyme and are useful in the treatment of hypertension.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: June 5, 1984
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Denis E. Ryono, Edward W. Petrillo, Jr.
  • Halogen finishing of flexographic printing plates containing butadiene/acrylonitrile copolymers
    Patent number: 4451553
    Abstract: Process for providing improved solvent resistant surfaces of relief flexographic printing plates prepared by imagewise exposure and liquid development of the unexposed areas of a layer of photosensitive elastomeric composition comprising a high molecular weight butadiene/acrylonitrile copolymer and a monomeric compound wherein, optionally after drying, the developed surface is, in either order, (1) postexposed to actinic radiation, and (2) contacted with two successive aqueous halogen solutions, first, 0.01 to 3.5% by weight aqueous bromine solution for about 15 seconds to 20 minutes or 0.2 to 10% by weight aqueous iodine solution for about 1.0 to 10 minutes, followed by chlorine solution equivalent to that supplied by an aqueous solution, 0.01 to 1.0 molar in NaOCl and 0.012 to 1.2 molar in HCl, for about 15 seconds to 5 minutes.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael G. Fickes, Bohdan Rakoczy
  • Inside adapter for a sample container
    Patent number: 4451250
    Abstract: An adapter for supporting a centrifuge container from the inside surface thereof includes a bore extending through a portion thereof. The bore exhibits generally confronting planar surfaces each arranged to lie coincident with the radius of the rotor in which the container is disposed.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William A. Romanauskas
  • Bis(aminoneopentyl) aromatics and polyamides derived therefrom
    Patent number: 4451642
    Abstract: Aromatic-aliphatic diamines of the formula ##STR1## in which Ar is an arylene or substituted arylene are useful in preparing thermally stable, rigid, polyamides, polyureas and polyurethanes having a repeating unit of the formula ##STR2## in which Ar is arylene or substituted arylene, X is --NH-- or --O--, n is 0 or 1, and R is a divalent organic radical. Polymers of this invention can be melt-spun into thermally stable fibers.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: August H. Frazer, John F. Harris, Jr.
  • Additive for coating compositions
    Patent number: 4451600
    Abstract: An additive for coating compositions which is a blend of(A) 20-50% by weight of a polyisocyanate having the formula ##STR1## where R.sup.1 is (CH.sub.2).sub.6' (B) 1-15% by weight of an ester of a polyalkylene glycol alkyl alkylate, an alkyl phthalate or an alkyl aromatic phthalate(C) 1-10% by weight of a blend of ultraviolet light stabilizers and(D) 25-78% by weight of organic solvent; the additive can be added to acrylic lacquers, nitrocellulose lacquers, acrylic-alkyd enamels and acrylic polyurethane enamels to provide flexible finishes for flexible substrates used in automobile and truck bodies.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Grant C. Fry
  • High solids color coat containing alcohol soluble cellulose acetate butyrate
    Patent number: 4451597
    Abstract: The coating composition useful as the exterior finish on automobiles and trucks contains about 25-50% by weight of a binder of film-forming constituents and 50-75% by weight of a volatile organic solvent carrier and additionally contains 2-150% by weight, based on the weight of the binder, of pigment; the binder is about 20-70% by weight of an acrylic polymer containing reactive hydroxyl, carboxyl, amide groups or any mixture of such groups, about 0-40% by weight of a hydroxy-terminated polyester urethane resin and about 25-40% by weight of an alkylated melamine formaldehyde crosslinking resin; in addition the composition contains about 4-20% by weight, based on the weight of the binder, of a rheology control agent of an alcohol soluble cellulose acetate butyrate having a buryryl content of about 45-50% by weight, a hydroxyl content of about 4-5% by weight and a viscosity of about 0.2-0.4 second.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Claus Victorius
  • Centrifuge bowl having rotor windage limited disposed thereon
    Patent number: 4451248
    Abstract: The container for a centrifuge is characterized by at least one turbulence promoter mounted on the interior surface thereof at a predetermined operative height. The turbulance promoters serve to generate turbulent air flow about a rotor usable interchangeably within the container so as to windage limit the rotational speed of the rotor.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John F. Williams
  • Ostomy bag with an adjustable vent
    Patent number: 4451258
    Abstract: An air vent for an ostomy bag has a variable flow rate so that the flow rate through a deodorizing filter housed in the vent can be varied to enhance the effectiveness of the filter. The vent also permits precise control over the degree of inflation of the bag.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: May 29, 1984
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Ole R. Jensen
  • Analgesic, antagonist, and/or anorectic 14-fluoromorphinans
    Patent number: 4451470
    Abstract: 14-Fluoromorphinans such as 17-cyclopropylmethyl-4,5-epoxy-14-fluoro-3-hydroxymorphinan-6-one are useful as analgesics, narcotic antagonists, and/or anorexigenic agents.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Venkat Ganti
  • Process for dimerizing acrylates and methacrylates
    Patent number: 4451665
    Abstract: Catalytic process for dimerizing a lower alkyl acrylate or methacrylate by contacting, at about 0.degree. to about 150.degree. C., the acrylate or methacrylate with the catalyst of the formula (RCN).sub.4 PdX.sub.2 wherein R is hydrocarbyl which contains no carbon-carbon unsaturation other than aromatic unsaturation and X is an anion which is incapable of displacing RCN from the cationic moiety of the palladium complex.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: May 29, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William A. Nugent
  • Device for conveying and redistributing objects
    Patent number: 4449624
    Abstract: The invention relates to a device for continuously distributing parallelepipedic loads which comprises a conveyor constituted by power-driven rollers whose axis is perpendicular to that of the push-bars of an endless chain conveyor arranged above the rollers, whereas an element for guiding the objects driven simultaneously by the rollers and the push-bars is arranged obliquely between the roller conveyor and the push-bar conveyor, the push-bars being provided with stops for transverse positioning of the objects on the roller conveyor.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: May 22, 1984
    Assignee: E. P. Remy et Cie
    Inventors: Didier Lemaire, Gerard Lebret
  • Process colorimeter
    Patent number: 4449821
    Abstract: A colorimeter for measuring color of an object, in particular for measuring the color of liquids such as paints in a process stream. In the colorimeter, a single analytical light beam, with its blue and red intensity ratio controlled through a feedback loop, is directed to a sample whose color is being measured. A portion of the analytical light beam is reflected from the sample into a grating monochromator which disperses the light beam into its spectra. A detector array is attached to the monochromator which converts the spectra of the light beam into discrete signals which are then multiplexed with instrument status and reference color signals into an A/D converter. The output of the A/D converter is then fed directly to a computer programmed to directly provide standard color values.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: May 22, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jerald D. Lee
  • Tamper-resistant, expandable communications system
    Patent number: 4450481
    Abstract: An expandable, multipurpose digital and analog communications system in which a plurality of remote interrogator units connected in a branch of the system are isolated from one another by band stop filters to permit simultaneous polling without interference with other operations. Also disclosed is a premium service control unit which makes uses of a frequency agile oscillator.
    Type: Grant
    Filed: August 25, 1981
    Date of Patent: May 22, 1984
    Assignee: E-Com Corporation
    Inventor: Robert V. C. Dickinson
  • Biologically pure culture of Saccharomyces cerevisiae
    Patent number: 4450238
    Abstract: The invention relates to a process for the production of the alpha-galactosidase enzyme by culturing yeasts of the Saccharomyces cerevisiae genus in a temperature range from 20.degree. C. to 40.degree. C.The invention also relates to a process for enzymic hydrolysis of raffinose by alpha-galactosidase from Saccharomyces cerevisiae. Such hydrolysis may take place with the yeast cells being present or also in the presence of enzymic extracts, both as such and enriched. An important advantage of the invention is the high alpha-galactosidasic activity of the selected microorganisms, together with the absence of any invertasic activity.
    Type: Grant
    Filed: November 5, 1982
    Date of Patent: May 22, 1984
    Assignee: E. N. I. Ente Nazionale Idrocarburi
    Inventors: Vincenza Vitobello, Paolo Branduzzi, Nadia Cimini
  • Process for converting nitriles to carboxylic esters
    Patent number: 4450112
    Abstract: Reaction of a nitrile, an alcohol and water in the presence of a catalyst comprising rhodium, iridium or platinum complexed with hydroxo and tertiary phosphine moieties, to produce the corresponding carboxylic ester.
    Type: Grant
    Filed: November 25, 1981
    Date of Patent: May 22, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stanley S. Wreford
  • Antihypertensive polyhalohydroxyisopropyl phenylalka(e)noic acid esters of alkylaminohydroxypropyloxyphenylalkyl alcohols
    Patent number: 4450172
    Abstract: Polyhalohydroxyisopropyl phenylalka(e)noic acid esters of alkylaminohydroxypropyloxyphenylalkyl alcohols, such as 2-(4-((2-hydroxy-3-(1-methylethylamino)-phenyl)ethyl 3-(4-(2,2,2-trifluoro-1-hydroxy-1-trifluoromethylethyl))benzene propanoate, are useful as antihypertensive agents. Preferred compounds give vasodilatory activity and reduced tachycardia.
    Type: Grant
    Filed: March 10, 1982
    Date of Patent: May 22, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Sung-eun Yoo
  • Caster wheel brake having an overcenter latch
    Patent number: 4449268
    Abstract: A caster wherein a brake plate is supported for pivotal movement about an axis intermediate the opposite ends of the brake plate and adjacent the caster yoke and beneath the caster yoke. One end of the brake plate is connected to a toggle mechanism including a wire having one end anchored to the plate and pivots about the caster wheel axis. When the lever is pivoted over center, the wire pulls one end of the brake plate into engagement with the caster wheel thereby braking the caster wheel. The opposite end of the brake plate engages a bearing race fixed to the caster shaft and to thereby brake the caster against rotation.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: May 22, 1984
    Assignee: E. R. Wagner Mfg. Co.
    Inventor: Henry A. Schnuell
  • Agricultural clean-out drag
    Patent number: 4449591
    Abstract: An agricultural clean-out drag particularly adapted to smooth out dikes, is mounted upon a boom. The drag is pivoted rearward of center so the front of the drag tends to hang down to bear against the ground. The drag is a shell, semi-circular in shape. The front is flat. The boom is pivoted behind the plow shank and is spring biased downward. The front of the drag is chained to the boom to limit the downward travel of the front of the drag.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: May 22, 1984
    Assignee: Lindell E. Lee, Jr.
    Inventors: George L. Brown, Lindell E. Lee, Jr.
  • Preparation of trialkylsilyl ethers
    Patent number: 4448980
    Abstract: In an improved catalytic process for preparing trialkylsilyl ethers from trialkylsilyl compounds and carbonyl group-containing compounds, the improvement consisting of using an organic or inorganic bifluoride (HF.sub.2.sup..crclbar.) as the catalyst.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: May 15, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dotsevi Y. Sogah