Patents Assigned to E
  • Patent number: 4957973
    Abstract: "Living" polymers and their preparation in the absence of a co-catalyst at a pressure greater than about 50 MPa, from polar acrylic or maleimide monomers and organosilicon, -tin or -germanium initiators.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dotsevi Y. Sogah
  • Patent number: 4957986
    Abstract: Partially fluorinated polyesters are disclosed having increased biodegradability and water repellency. The incorporation of an ester group into the backbone of the partially fluorinated compound permits modification of the compound's physical properties.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harry N. Cripps
  • Patent number: 4957975
    Abstract: A composition that exhibits low tendency to foul mold cavities comprising a fluoroelastomer of vinylidene fluoride units and units of at least one other fluorine-containing monomer copolymerizable with vinylidene fluoride; a bisphenol or a polyhydroxy phenol crosslinking agent of the formula ##STR1## where R is H, alkyl or aryl and R' is alkyl or aryl; a divalent metal oxide or hydroxide; and 0.2-4 parts by weight per 100 parts by weight fluoroelastomer of a crosslinking accelerator which is a quaternary ammonium salt of the formula R".sub.4 N.sup.+ X.sup.- wherein each R" is independently an alkyl group of 2-10 carbon atoms or an aralkyl group of 7-10 carbon atoms and X.sup.- is selected from the group consisting of fluoride, dihydrogen phosphate, periodate, acetate, hydrogen sulfate, methane sulfonate, toluene sulfonate, or an anion of a bisphenol or a polyhydroxy phenol.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: September 18, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Dana P. Carlson, Walter W. Schmiegel
  • Patent number: 4958036
    Abstract: A process is provided for preparing a 7-oxabicycloheptane amino alcohol intermediate of the general structure ##STR1## (wherein the above structures represents (D) or (L) isomers)which is useful in preparing thromboxane A.sub.2 receptor antagonists. This intermediate is prepared by reacting mesanhydride with an aryl amine ##STR2## wherein R is alkyl, CH.sub.2 OH, CO.sub.2 H or CO.sub.2 alkyl, to form the acid ##STR3## which is reduced by treatment with lithium aluminum hydride or diisobutylaluminum hydride or Red-Al to form the alcohol ##STR4## wherein R.sup.1 is CH.sub.2 OH when R is CO.sub.2 H, CO.sub.2 alkyl or CH.sub.2 OH, and R.sup.1 is alkyl when R is alkyl; where in the above alcohol R.sup.1 is CH.sub.2 OH, such alcohol compound is treated with an alkyl chloroformate in the presence of base such as an alkali metal alkoxide to form the alcohol ##STR5## which undergoes cleavage by treatment with alkali metal, ammonia and acid to form the amino alcohol intermediate.Where in the above alcohol R.sup.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: September 18, 1990
    Assignee: E. R. Squibb & Sons, Inc.
    Inventor: John K. Thottathil
  • Patent number: 4956901
    Abstract: A layered yarn package is formed of continuous filament yarn wads wherein the yarn alternates between compacted an extended lengths by axially compacting the yarn into a length, segmenting the length into alternating extended and compacted lengths then arranging the compacted lengths in a common axial direction one next to the other to form a layer. The layer may be compressed. One or more layers may form the package.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: September 18, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joseph E. Koskol, Robert J. Santucci, Louis G. Rosanio, Jr.
  • Patent number: 4957141
    Abstract: A pipe-end protector depending on its being used as a cap or plug comprises a metal housing with a sleeve-like, elastomer inset or a metal plug with a sleeve-like, elastomer cover. To increase the strength of the protector, the metal housing or the metal plug --which always are tubular--are provided at their outer end with a flanged or folded, preferably rolled edge. To facilitate manufacture of the protector, the inset or the cover may consist of at least two part-cylindrical mating case-components.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: September 18, 1990
    Assignees: Wilfried Dreyfuss, Thomas E. Remp
    Inventors: Wilfried Dreyfuss, Thomas E. Remp, Kurt Muller
  • Patent number: 4957765
    Abstract: The present invention involves a system and method for preparing cream liqueur products having improved emulsion stability and products thereof. The method comprises the steps of preparing a spirits premix by combining spirits, a carbohydrate, and water, and preferably including flavoring and colorant; preparing a protein premix by dissolving citric acid or a salt thereof and caseinate in water; thoroughly mixing the protein premix with cream, preferably double cream; thereafter preparing a product mixture by mixing the spirit premix with the mixture of cream and the protein premix; and homogenizing the product mixture so that the average particle size is reduced to less than 5 microns, preferably less than 2 microns.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: September 18, 1990
    Assignee: Joseph E. Seagram & Sons, Inc.
    Inventors: Craig C. Widmar, Dale Tripp, Vincent G. Ficca
  • Patent number: 4956252
    Abstract: The present invention concerns an aqueous processible solid photosensitive composition for making relief plates comprising(a) an addition photopolymerizable ethylenically unsaturated monomer;(b) a photoinitiator or photoinitiating system activated by actinic light; and(c) a core shell microgel binder; wherein the core shell microgel binder has two domains, a core having less than 10% crosslinking and an aqueous processible non-crosslinked outer shell consisting of an acid-modified copolymer, and further wherein the monomer partitions in the shell of the microgel. The invention also concerns a photosensitive element containing this composition.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: September 11, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventors: Michael Fryd, Ernst Leberzammer, S. Andries R. Sebastian
  • Patent number: 4956236
    Abstract: Coextruded, substantially unoriented monofilament having a multi-lobed core and a round sheath.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: September 11, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Teh-Chaun Wang
  • Patent number: 4955622
    Abstract: The stop apparatus fits into the bore of a collet and incorporates a sleeve which is expanded in diameter to lock the apparatus in place. The stop face is the end of a cylindrical rod which slides in a bore in the body of the apparatus and is held at a desired position by a set screw. The body is a body of revolution with a bore for accepting the rod and an outer surface comprising a flange at one end, a cylindrical portion, a threaded portion and a knurled portion at the other end. The flange has a conical surface facing the cylindrical portion. The cylindrical portion is surrounded by a split, resilient sleeve held in place by a nut threaded onto the threaded portion. The nut has a conical surface also facing the cylindrical portion. The conical surfaces engage chamfers at the ends of the internal surface of the sleeve so that turning the nut on the body toward and away from the flange causes the sleeve to expand or allows it to contract.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: September 11, 1990
    Assignees: James A. Haggerty, Thomas E. Hawkes
    Inventor: Donald M. Peterson
  • Patent number: 4956005
    Abstract: Ortho-Sulfonamide benzenesulfonylureas, such as N-cyclopropyl-N'-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-1,2-benzened isulfonamide, are useful as pre-emergent and post-emergent herbicides.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: September 11, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Donald J. Dumas
  • Patent number: 4956237
    Abstract: A hollow fiber with a plurality of members projecting from its outer surface in an arc turned back on itself is formed from a spinneret having a segmented orifice wherein each segment comprises a first portion in the form of an arc curved about the center of the orifice, a second portion extending from the first and connected to a third portion which is in the form of a reverse curve with respect to the first.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: September 11, 1990
    Assignee: E. I. duPont de Nemours and Company
    Inventor: Harry V. Samuelson
  • Patent number: 4954559
    Abstract: A waterbased coating composition containing about 10-30% by weight of film forming binder dispersed in an aqueous carrier; wherein the binder contains abouta. 60-90% by weight, based on the weight of the binder, of a methylol (meth)acrylamide acrylic polymer of polymerized monomers of alkyl methacrylate, alkyl acrylate or mixtures thereof, 1-10% by weight, based on the weight of the acrylic polymer, of methylol methacrylamide, methylol acrylamide or mixtures thereof, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated carboxylic acid, 0.5-10% by weight, based on the weight of the acrylic polymer, of an ethylenically unsaturated hydroxyl containing monomer and the acrylic polymer has a glass transition temperature of -40.degree. to +40.degree. C. and a weight average molecular weight of 500,000 to 3,000,000; and the carboxyl groups of the carboxylic acid are reacted with ammonia to provide a pH to the composition of about 7.0-10.0;b.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Herman C. Den Hartog, Eileen E. Konsza, James F. Matthews, Ervin R. Werner, Jr.
  • Patent number: 4954290
    Abstract: Azeotropes of 1,1-dichloro-2,2,2-trifluoroethane with pentanes and their use as cleaning agents and foam blowing agents.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Philip L. Bartlett, Joseph A. Creazzo, Robert A. Gorski
  • Patent number: 4953752
    Abstract: Process and apparatus are provided to distribute specified, premixed quantities of dry mortar mix and cement to a construction site. Bulk bags and a hopper apparatus are transported to the construction site and utilized with a forklift and a mixer device. The hopper apparatus is adjustably assembled and is constructed and arranged to be hand operable to efficiently meter homogeneous predetermined quantities of the mixture out of a discharge chute. The premixed contents in the bulk bags are dumped into the hopper apparatus and discharged in metered quantities into the mixer device. A water dispensing structure is provided to discharge a predetermined volume into the mixer device to form mortar or concrete for use.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: September 4, 1990
    Assignee: E-Con-Mega Mix
    Inventors: Robert C. Tousignant, James W. Tousignant, Richard L. Tousignant
  • Patent number: 4954300
    Abstract: An apparatus and method for repairing cracks and chips in automobile windshields provides an injector that heats repair chemical prior to inserting the repair chemical into the crack and also heats the windshield prior to inserting the repair chemical into the crack.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: September 4, 1990
    Assignee: John E. Vandigriff
    Inventor: Jimmy R. Dotson
  • Patent number: 4954052
    Abstract: A land and water transportable apparatus positionable in a body of water for extracting energy from wave action in the body of water, is disclosed, comprising a wheel-shaped float positionable on the surface of the body of water operable by wave action, a wheel-shaped anchor for positioning on the bottom of the body of water for anchoring the float, a spacer disposed between the float and the anchor for securing the float to the anchor when the apparatus is transported to a deployment site, a spacer for securing the float to the anchor when the float is separated from the anchor, and an accumulator associated with the float for converting wave action energy to useful work.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Walter J. Simmons
  • Patent number: 4954926
    Abstract: A thick film conductor composition suitable for use for electrodes in multilayer capacitors comprising (a) finely divided particles of electrically conductive metal, metal oxide precursors or alloys of the conductive metals, or mixtures thereof, dispersed in (b) an organic medium comprising(1) an organometallic compound, the metal or metal oxide moiety of which is insoluble in the electrically conductive metal and/or the oxide(s) of the metal moiety are non-reducing in the presence of the electrically conductive metal, the organometallic compound being dissolved in;(2) a solution of polymeric binder and volatilizable solvent.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John G. Pepin
  • Patent number: 4953621
    Abstract: Novel aqueous titanium compositions comprising mixtures of at least two titanium compounds, at least one of which effects cross-linking of hydroxyl-containing materials more rapidly than at least one other titanium compound; the use of such organic titanium compositions in a novel process for hydraulically fracturing oil- and/or gas-containing subterranean formations; and aqueous compositions useful in such a process.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald E. Putzig, Kenneth C. Smeltz
  • Patent number: 4954330
    Abstract: A process for preparing hydrogen fluoride involving treating anhydrous hydrogen fluoride containing primarily trivalent arsenic impurities with an effective amount of chromium (VI) oxide (i.e., CrO.sub.3) and oxygen such as to oxidize substantially all of the trivalent arsenic to pentavalent arsenic (i.e., As.sup.+3 .fwdarw.As.sup.+5) followed by separation and recovery (e.g., by distillation) of purified anhydrous hydrogen fluoride.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: September 4, 1990
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: William C. Ziegenhain