Patents Assigned to E
  • Process for resolving chiral intermediates used in making calcium channel blockers
    Patent number: 4963671
    Abstract: This process enables preparation of the preferred (+)-threo enantiomer by resolution of its racemic mixture of a compound of the formula ##STR1## wherein Y.sup.1 and Y.sup.2 are each independently lower alkyl and R.sup.1 is hydrogen or lower alkyl. The compound is treated with a chiral acid (tartaric aicd preferred) in an organic solvent (ethanol preferred) to yield the (+)-threo enantiomer, which is then recovered from the reaction mixture. This enantiomer may then be used to produce the preferred (+)-cis enantiomer of certain benzothiazepine cardiovascular agents.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: October 16, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: John Krapcho
  • Control providing progressive charging in a dual voltage charging system
    Patent number: 4963813
    Abstract: A control for an electrical charging system for selectively connecting a single alternator with two stator coil sets producing charging current at each of six outputs to the output of a first battery and the output of a second battery serially connected to the first battery output. The control comprises a plurality of switchable full wave bridge rectifiers for connecting each of the alternator outputs to one of the first battery output and the second battery output so that the one battery is charged by the alternators. The switchable rectifiers are alternatively switchably connectable to the other battery output so that the other battery is charged by the alternators.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: October 16, 1990
    Assignee: C. E. Niehoff & Co.
    Inventor: Donald Bolle
  • Holographic photopolymer compositions and elements for refractive index imaging
    Patent number: 4963471
    Abstract: Holographic photopolymer compositions having fluorinated binders are provided that produce excellent reflection holograms when holographically imaged.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Torence J. Trout, Dominic M. Chan, Bruce M. Monroe
  • Phosphonate and phosphonamide endopeptidase inhibitors
    Patent number: 4963539
    Abstract: Compounds of the formula ##STR1## wherein Y is O or NH and X is ##STR2## will inhibit the action of neutral endopeptidase. As a result, such compounds produce diuresis, natriuresis, and lower blood pressure as well as being useful in the treatment of congestive heart failure, relieving pain, and diarrhea when administered to a mammalian host.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: October 16, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: Norma G. Delaney
  • Low smoke and flame-resistant composition
    Patent number: 4963609
    Abstract: A low smoke and flame-resistant fluoropolymer composition, useful as insulation in a plenum cable and comprised of a base polymer of ethylene units, tetrafluoroethylene and/or chlorotrifluoroethylene units, and fluorine-containing, non-telogenic termonomer units; a metal oxide; and a polytetrafluoroethylene drip suppressant.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jerrel C. Anderson, Subhash V. Gangal, Dewey L. Kerbow, Charles W. Stewart
  • Process for preparing fiber, rovings and mats from lyotropic liquid crystalline polymers
    Patent number: 4963298
    Abstract: Process for preparing subdenier fiber and structures thereof from lyotropic liquid crystalline polymers comprising extruding a stream of the polymer into a chamber, introducing a pressurized gas into the chamber, directing the gas in the flow direction of and in surrounding contact with the stream within the chamber, passing both the gas and the stream into a zoner of lower pressure at a velocity sufficient to attenuate the stream and fragment it into fibers, and contacting the fragmented stream in the zone with a coagulating fluid.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Steven R. Allen, Aziz A. Mian, Sam L. Samuels
  • Optical nonlinearity in organic and organometallic molecules via lattice inclusion complexation
    Patent number: 4962979
    Abstract: There are disclosed a nonlinear optical element capable of second harmonic generation comprising a crystalline inclusion complex of a lattice-forming host compound crystallized with continuous channel cavities in the presence of a nonlinearly polarizable guest compound in a noncentrosymmetric space group, said guest compound having specified properties, and both said guest and host being selected from specified classes; a nonlinear optical device; a method of generating second harmonic radiation; and an electro-optic modulator.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Albert G. Anderson, David F. Eaton, Wilson Tam, Ying Wang
  • Stain resistant polymers and textiles
    Patent number: 4963409
    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: November 23, 1987
    Date of Patent: October 16, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Theodor A. Liss, Leonard H. Beck
  • Chroma neutralization of clear coats by adding pigment dispersions
    Patent number: 4963600
    Abstract: A method for minimizing the inherent yellowness of any kind of clear coating is disclosed. This method involves the addition of very small amounts of blue pigments or dyes to the clear coating so that chroma neutralization occurs. The chroma neutralization results in a clear coat which is crystal clear in appearance.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: October 16, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Joseph F. Coughlin
  • Coupling for attaching an ostomy or pouch to a medical grade adhesive pad
    Patent number: 4963136
    Abstract: An ostomy coupling has two co-operating coupling elements. One is for attachment to a medical grade adhesive and the other is for attachment to an ostomy pouch. Each element is of close loop form and includes a tapering member extending around a stomal orifice. Each such member tapers in a radially outward direction and has a flat surface located in a plane at right angles to the coupling axis. The coupling also has a means of clamping which can be tightened onto the tapering members to hold them together. When held their respective flat surfaces are in face-to-face arrangement. Hence, two coupling elements can be held together and released without the application of any axial pressure forces or pulling forces to the wearer of the ostomy appliance.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: October 16, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Peter L. Steer, Neil P. Wiltshire
  • Process for the synthesis of the levodopa
    Patent number: 4962223
    Abstract: New process for the synthesis of the levodopa, L-(-)-2-amino-3-(3,4-dihydyphenyl)propionic acid, drug used in the treatment of the Parkinson's disease. The process consists in resolving with d-camphorsulfonic acid, or with a salt thereof, the d,l-2-amino-3-(3,4-dimethoxyphenyl)propionitrile, obtained from the 3,4-dimethoxyphenylacetaldehyde, and in the subsequent hydrolysis and demethylation, by means of concentrated solutions of haloid acids, of the d-2-amino-3-(3,4-dimethoxyphenyl)propionitrile and of salts thereof.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: October 9, 1990
    Assignee: Ministero dell'Universita e delle Ricerca Scientifica e Tecnologica
    Inventors: Vincenzo Cannata, Giancarlo Tamerlani, Mauro Morotti
  • Method of reducing pre-and post-ischemic myocardial arrhythmias and fibrillation
    Patent number: 4962095
    Abstract: Zofenopril, fosinopril, (S)-1-[6-amino-2-[[hydroxy (4-phenylbutyl) phosphinyl]oxy]-1-oxohexyl]-L-proline or a pharmaceutically acceptable salt thereof alone or in combination with a thrombolytic, antiarrhythmic, or antifibrillatory agent is employed to reduce pre-and post- ischemic myocardial arrhythmias and fibrillations as well as reducing arrhythmias associated with congestive heart failure.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: October 9, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Gary J. Grover, James L. Bergey
  • Process for reducing carbon monoxide emissions from a fluidized bed titanium dioxide chlorinator
    Patent number: 4961911
    Abstract: A process for reducing the amount of carbon monoxide emitted from a fluidized bed reactor for chlorinating titanium bearing material containing iron oxide comprising (a) feeding coke, titanium bearing material containing iron oxide, and chlorine to the reactor, the chlorine being fed to the reactor below the surface of the fluidized bed, (b) maintaining the feed rate of the materials in step (a) and the conditions of operation of the bed so that the iron oxide is substantially converted to ferrous chloride, and (c) feeding sufficient chlorine to the reactor at or near the surface of the bed to convert the desired amount of carbon monoxide to carbon dioxide.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: October 9, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Paul G. Reis, Michael J. Dunbar
  • Material reducer
    Patent number: 4961542
    Abstract: A material reducing apparatus includes a hopper having a pair of opposed sides, a front end and a back end. The back end has a top and bottom and a shearing edge at the bottom. A chain with bits forms the floor of the hopper. The chain is on a boom. Drive means drives the chain so that the bits move towards the shearing edge. The moving bits cooperate in reducing material conveyed on the chain and cooperate further with the shearing edge to reduce the material to a predetermined size.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: October 9, 1990
    Assignee: Leroy E. DenBesten
    Inventors: Todd Den Besten, Leroy E. DenBesten
  • Pressure vessel for dispensing materials and method for filling same
    Patent number: 4961448
    Abstract: A system for delivering a fluid from a puncture in a pressurized vessel and particularly for delivering an entry retardant into or adjacent a secure space.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: October 9, 1990
    Assignee: R. E. Timm & Associates, Inc.
    Inventor: Ronald E. Timm
  • Thermistor composition
    Patent number: 4961999
    Abstract: The invention is directed to a thick film thermistor composition consisting of finely divided particles of (a) a ruthenium-based pyrochlore, and (b) a short borosilicate glass or glass mixture, both dispersed in (c) an organic medium.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: October 9, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Jacob Hormadaly
  • Ternary azeotropic compositions of 2,3-dichloro-1,1,1,3,3-pentafluoropropane with trans-1,2-dichloroethylene and methanol
    Patent number: 4961869
    Abstract: Azeotropic mixtures of 2,3-dichloro-1,1,1,3,3-pentafluoropropane (HCFC-225da) and trans-1,2-dichloroethylene (HCC-1130) with methanol, the azeotropic mixtures being useful in solvent cleaning applications.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: October 9, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael E. Eggers, Abid N. Merchant
  • Nonlinear optical devices from derivatives of stilbene
    Patent number: 4961631
    Abstract: Certain derivatives of stilbene are capable of second harmonic generation when illuminated by coherent optical radiation.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 9, 1990
    Assignee: E. I Du Pont de Nemours and Company
    Inventors: Robert A. Clement, Wilson Tam, Ying Wang
  • Tire tread segment
    Patent number: D311163
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: October 9, 1990
    Assignee: Fate Socieded Anonima Industrial Comercial e Imobiliaria
    Inventor: Delfin A. Rabinovich
  • Aircraft
    Patent number: RE33385
    Abstract: This invention relates to an aircraft having three lift surfaces, and precisely a main wing lift surface located in an intermediate position of the aircraft and two less extended lift surfaces positioned, respectively, in a position ahead of the main wing surface and astern thereof.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: October 16, 1990
    Assignee: Industrie Aeronautiche e Rinaldo Piaggio S.p.A.
    Inventor: Alessandro Mazzoni