Patents Represented by Attorney James A. Costello

Find this attorney in the Justia Lawyer Directory

  • Fluorinated 3-ketoglutaroyl halides
    Patent number: 4608206
    Abstract: Compounds having the formula: ##STR1## where X is F or Cl, and a process for the preparation of such compounds.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: August 26, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David C. England, Edward G. Howard, Jr.
  • Precursor solutions for biologically active glass
    Patent number: 4608350
    Abstract: An aqueous solution of precursors for biologically active glass, support particles coated with the solution, support particles coated with the glass, spheroidal particles of biologically active glass, processes for making the solution, coating the support, and for making the coated support and the spheroidal glass particles. The materials that comprise the biologically active glass are useful in prosthetic devices and implants for the human body.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: August 26, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward G. Howard, Jr.
  • Hydration of cyclohexene in presence of perfluorosulfonic acid polymer
    Patent number: 4595786
    Abstract: A catalytic process for the hydration of cyclohexene to cyclohexanol in the presence of perfluorosulfonic acid polymer.
    Type: Grant
    Filed: November 27, 1984
    Date of Patent: June 17, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Francis J. Waller
  • Tanning development in low silver photoimaging using polymeric couplers
    Patent number: 4576894
    Abstract: A photoimaging system and method for photoimaging employing said photoimaging system, the latter comprising (i) a photosensitive element having a substrate coated with a photosensitive layer containing dispersed silver halide particles in operative association with a continuous film-forming phase of polymeric coupler, the coupler characterized by the ability to couple with the developing agent of component (ii) to become insoluble in aqueous media; and (ii) an oxidized hydroquinone or aminophenol-type developing agent.
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: March 18, 1986
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Dennis S. Donald
  • .beta.-Substituted polyfluoroethyl compounds
    Patent number: 4576752
    Abstract: .beta.-Substituted polyfluoroethyl compounds, process for the preparation thereof, copolymers thereof, compound intermediates, and process therefor. The copolymers are useful as ion exchange resins or structural foams.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: March 18, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl G. Krespan
  • Substituted benzopentathiepins
    Patent number: 4571404
    Abstract: Substituted benzopentathiepins, their preparation from 1,2,3-benzothiadiazoles and elemental sulfur, selected 1,2,3-benzothiadiazoles; the benzopentathiepins being useful as biologically active compounds or as intermediates to 1,2-benzenedithiols.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: February 18, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Bertrand L. Chenard
  • Bis(aminoneopentyl) aromatics
    Patent number: 4564705
    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.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: January 14, 1986
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: August H. Frazer, John F. Harris, Jr.
  • Process for making tetrahydrofuran and 1,4-butanediol using Pd/Re hydrogenation catalyst
    Patent number: 4550185
    Abstract: Palladium/rhenium-on-carbon catalyst; a method employing said catalyst to produce tetrahydrofuran, 1,4-butanediol or mixtures thereof in selectable ratios from a number of starting reactants; and a method for making the Pd/Re/C catalyst.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: October 29, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Melinda A. Mabry, William W. Prichard, Stanislaw B. Ziemecki
  • Monoorganylation of dihaloaromatics
    Patent number: 4538003
    Abstract: Process for the monoalkylation/monoarylation of dihaloaromatic compounds by treating the latter with selected magnesium or zinc organometallic reagents in the presence of a nickel/bidentate or tridentate phosphorus ligand. The products are intermediates to agricultural and pharmaceutical compounds.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: August 27, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Wilson Tam
  • Alkyl perfluoro-omega-(2-iodoethoxy) compounds and vinyl ethers therefrom
    Patent number: 4531011
    Abstract: Alkyl perfluoro-.omega.-(2-iodoethoxy) compounds, vinyl ethers made therefrom, and a process for preparing the iodo-compounds. The vinyl ether monomers when copolymerized with halogenated 1-olefins are useful to form elastomers, rigid articles, or membranes and films having ion-exchange properties.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: July 23, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl G. Krespan
  • 8-Aza-13-thiaprostanoids and a method of use thereof as anti-ulcer agents
    Patent number: 4530933
    Abstract: Biologically active 8-aza-13-thiaprostanoids having the formula: ##STR1## wherein A is CH.dbd.CH (cis or trans), C.tbd.C, CH.sub.2 CH.sub.2, ##STR2## or CHOHCH.sub.2 ; R is H, C.sub.1 to C.sub.12 n-alkyl, branched chain alkyl, or cycloalkyl, or a physiologically acceptable metal or amine salt cation;R.sup.1 is H, CH.sub.3 or C.sub.2 H.sub.5 ;R.sup.2 is CH.sub.3 or CF.sub.3 ; andn is an integer from 4 to 9.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: July 23, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chia-Lin J. Wang
  • Conjugated dienols
    Patent number: 4526993
    Abstract: Conjugated dienols for providing cure sites to air-drying acrylic finishes are prepared from conjugated dienoic acids by conversion to an activated ester followed by sodium borohydride reduction thereof.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: July 2, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chaucer C. Tang
  • Photosensitive composition and method for forming a neutral black image
    Patent number: 4520093
    Abstract: A photosensitive composition, a photosensitive element employing said composition, and an improved photoimaging method that utilizes the disclosed composition. The improved method concerns a photosensitive element, formed from a photosensitive composition having a substrate layered with silver halide particles in operative association with a polymeric coupler, latently imaged, developed to render the imaged area insoluble, and washed to remove the undeveloped portion of the layer, wherein the improvement comprises addition of selected dispersed pigments to the polymeric coupler so that the optical density of the final image is neutral black.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: May 28, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William J. Chambers
  • Method for the hydrocarbylation of naphthoquinone derivatives
    Patent number: 4507241
    Abstract: A method for the hydrocarbylation of naphthoquinones comprising cross-coupling addition of the hydrocarbyl moiety of selected organometallic reagents to leaving group-substituted naphthoquinones.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: March 26, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George W. Parshall, Wilson Tam
  • Cyclobutanone antibacterials
    Patent number: 4505905
    Abstract: Certain 7-oxobicyclo[3.2.0] hept-2-en-2-carboxylic acids, esters, and salts thereof useful as antibacterial agents or as intermediates for antibacterial agents, and methods for making and using them.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: March 19, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George A. Boswell, Jr., Anthony J. Cocuzza
  • Cyclic monomers derived from trifluoropyruvate esters
    Patent number: 4496750
    Abstract: Perhalogenated dioxoles, halogenated dioxolanes, a process for making the dioxoles and dioxolanes, and polymers of dioxole and dioxolane monomers.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: January 29, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Burton C. Anderson, David C. England, Paul R. Resnick
  • Dimerizing acrylates to hexenedioates using ruthenium compound catalysts
    Patent number: 4485256
    Abstract: Process for dimerizing alkyl acrylate esters to dialkyl hexenedioates in the presence of an alkali metal-treated or alkaline earth metal-treated ruthenium compound. The hexenedioate products are useful to prepare adipic acid.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: November 27, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ronald J. McKinney
  • Density separation of protein overproducing bacteria
    Patent number: 4480038
    Abstract: Bacterial compositions and a method for separating protein overproducing bacteria from bacteria which do not overproduce protein. The separation makes use of an increase in density of the protein overproducing bacteria relative to that of normal bacteria.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: October 30, 1984
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Yih-Shyun E. Cheng
  • .beta.-Substituted polyfluoropropionate salts and derivatives
    Patent number: 4474700
    Abstract: .beta.-substituted polyfluoropropionate salts, derivatives and copolymers and processes for the preparation thereof.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: October 2, 1984
    Assignee: E. I. Du Pont DeNemours and Company
    Inventor: Carl G. Krespan
  • 6-Keto- and 6-hydroxy-8-azaprostanoids and anti-ulcer use thereof
    Patent number: 4456613
    Abstract: Biologically active 6-keto- and 6-hydroxy-8-azaprostanoids having the formula: ##STR1## wherein A is O or ##STR2## R is CO.sub.2 R.sup.4 or CH.sub.2 OH; R.sup.1 is H, CH.sub.3, or C.sub.2 H.sub.5 ;R.sup.2 is H, CH.sub.3, or F;R.sup.3 is CH.sub.3 or CF.sub.3 ;R.sup.4 is H, C.sub.1 to C.sub.12 n-alkyl, branched chain alkyl, or cycloalkyl, or a physiologically acceptable metal or amine salt cation; andn is an integer from 3 to 8.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: June 26, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Chia-Lin J. Wang