Patents Assigned to I
  • [Hexakis(pentenenitrilo)nickel II]bis-[.mu.-(cyano) bis(triphenylborane) (I)], its method of preparation and its use
    Patent number: 4749801
    Abstract: Process for preparing a new compound: [hexakis(pentenenitrilo)nickel II]bis[.mu.-(cyano)bis(triphenylborane)(I)] which is useful as a promoter in the hydrocyanation of 3 or 4-pentenenitrile.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard P. Beatty, John J. Ostermaier
  • Process for bimodal chlorination of polyethylene
    Patent number: 4749751
    Abstract: A process is disclosed for producing a blend of chlorinated low density polyethylene and chlorinated high density polyethylene wherein the polyethylenes are placed in a solvent and the temperature raised to a point where the low density polyethylene goes into solution and the high density polyethylene does not go into solution. The low density polyethylene is chlorinated up to the desired level and then the temperature is raised to dissolve the high density polyethylene and chlorination of both polyethylenes is continued to the desired level.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Royce E. Ennis, Wolfgang Honsberg
  • Microbiological decomposition of chlorinated aliphatic hydrocarbons
    Patent number: 4749491
    Abstract: An aerobic method for in situ treatment of water and soil which has been contaminated with chlorinated hydrocarbons. The aerobic method involves feeding an aqueous solution of an oxygen source and nutrients without the addition of a flammable carbon source such as propane or methane gas to a contaminated area to cause the indigenous microorganisms to grow consuming the contaminants.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Bernard C. Lawes, Carolann D. Litchfield
  • Acrylic amphoteric polymers
    Patent number: 4749762
    Abstract: Amphoteric polymers prepared by polymerization of (a) acrylic acid, (b) N,N-dimethyl- orN,N-diethylaminoethyl methacrylate and, optionally, (c) esters of methacrylic or acrylic acid prepared by (i) emulsion polymerization of (b), (c) and the methyl ester of (a), followed by basic hydrolysis, or (ii) polymerization of (a), (b) and (c) in the presence of a strong acid, and photographic emulsions comprised of said polymers in which the molar ratio of (a) to (b) is at least 2 to 1 and a silver halide.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert P. Foss
  • Phosphate cement including fly ash for high-strength concrete-like products
    Patent number: 4749413
    Abstract: Rapid-setting compositions based on MgO and Al(H.sub.2 PO.sub.4).sub.3 and having at least a ten-minute working time, and thus suitable for mortars and road patching, form concrete-like products having increased compressive strength when fly ash is present. Fly ash reacts with aluminum phosphate to form a cementitous composition whose compressive strength is the cause of the strength increase observed in the MgO/Al(H.sub.2 PO.sub.4).sub.3 reaction product.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ernst A. Tomic
  • Antiinflammatory and/or analgesic 5-alkylthiophenes
    Patent number: 4749712
    Abstract: 5-Alkyl-2,3-diarylthiophenes, such as 5-(1,1-dimethylethyl)-2,3-bis(4-methoxyphenyl)thiophene, 5-(1-methylpropyl)-2,3-bis(4-methoxyphenyl)thiophene and 5-cyclohexyl-2,3-bis(4-methoxyphenyl)thiophene, are useful in the treatment of inflammation and/or pain.
    Type: Grant
    Filed: December 5, 1984
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen B. Haber
  • Multilayer reverse osmosis membrane in which one layer is poly-meta-phenylene tetrahydrofuran-2,3,4,5-tetracarboxamide
    Patent number: 4749488
    Abstract: A multilayer membrane for performing reverse osmosis is disclosed. The membrane comprises a porous support and interfacially polymerized thereon a superposed layer of poly meta-phenylene tetrahydrofuran-2,3,4,5-tetracarboxamide in which up to 50 mole % of the tetrahydrofuran-2,3,4,5-tetracarboxamide units have been replaced with isophthalamide or terephthalamide units. The preferred material for forming the support is a polysulfone.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Samuel D. Arthur, Sherman A. Sundet
  • Herbicidal pyrazole sulfonamides
    Patent number: 4747870
    Abstract: This invention relates to certain pyrazole sulfonylurea herbicidal compounds, agriculturally suitable compositions thereof and a method of their use.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Barry A. Wexler
  • 4-hydroxycoumarin derivatives
    Patent number: 4748185
    Abstract: The invention provides 4-hydroxycoumarin compounds of general formula ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from hydrogen and halogen atoms and R represents a group of formula ##STR2## wherein one of n and n' is O, the other being 0 or 1, D represents a moiety --O--, --(CH.sub.2).sub.m -- or --O(CH.sub.2).sub.m -- where m is 1 or 2 and X represents a substituent selected from hydrogen, halogen, CN, CF.sub.3, OCF.sub.3, C.sub.1-6 alkyl and C.sub.1-6 alkoxy moieties, provided that when n is 1 and D is --OCH.sub.2 --, X may additionally represent a phenyl group, optionally substituted in the 4-position by a substituent selected from halogen, CN, CF.sub.3, OCF.sub.3, C.sub.1-6 alkyl and C.sub.1-6 alkoxy moieties; their preparation and their use as rodenticides.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ian D. Entwistle, Peter Boehm
  • Spunlaced nonwoven protective fabric
    Patent number: 4748065
    Abstract: A flame resistant and noxious chemical adsorbent, flexible, creped fabric suited for use as a protective garment is disclosed. The fabric is spunlaced and nonwoven and is impregnated with adsorbent carbonized particles.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Murty S. S. R. Tanikella
  • Aryl substituted aminomethyl benzene derivatives having antiarrhythmic utility
    Patent number: 4748184
    Abstract: The present invention relates to new compounds of the formula ##STR1## wherein X is ##STR2## wherein R.sub.1 is hydrogen, lower alkyl, phenyl, benzyl, cinnamoyl, thiophene, furan, pyrrole, imidazole, pyrazole oxazole or thiazole; W is hydrogen or hydroxy; (Y).sub.A is positioned ortho to W and is an aminoloweralkyl having the formula --CH.sub.2 NR.sub.2 R.sub.3 where R.sub.2 and R.sub.3 are the same or different and may be lower alkyl or R.sub.2 and R.sub.3 may together with N form a pyrrolidine, piperidine or azepine ring, and A is 2; n and m are independently from 0 to 5; and R is straight or branched C.sub.1 -C.sub.10 alkyl, straight or branched C.sub.3 -C.sub.10 cycloalkyl, straight or branched C.sub.2 -C.sub.4 alkenyl or straight or branched C.sub.2 -C.sub.4 alkynyl, or a pharmaceutically acceptable salt thereof.These compounds are useful in the treatment of various cardiac arrhythmias.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David M. Stout, William L. Matier, Lawrence A. Black
  • Compartmentalized cell-culture device and method
    Patent number: 4748124
    Abstract: A closed, cell culture device constructed using a first and second sheet of gas permeable, liquid-impermeable material. A third sheet of a material selectively permeable to a class of molecules sandwiched between the first and second sheets, all of the sheets being formed such that the first and third sheets define a first closed compartment and the second and third sheets define a second closed compartment, each compartment having an access port.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Erwin A. Vogler
  • Mixed carboxylato platinum (II) complexes
    Patent number: 4748254
    Abstract: Novel platinum(II) carboxylatocomplexes of the following general formula: ##STR1## wherein R is tetrahydrofurfuryl or cyclo-C.sub.n R".sub.2n-1, R" is H, an alkyl, hydroxyl, n=3-6; R' is --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --CH(OH)--, --CH(OH)--CH.sub.2 --, --CH(OH)--CH(OH)--.These compounds possess a clearly pronounced antitumor activity and are readily soluble in water.A process for preparing these compounds comprises reacting K [PtCl.sub.3 NH.sub.3 ] with KI, followed by treatment of the reaction mixture with tetrahydrofurfurylamine or an alicyclic amine and treatment of the resulting mixture of complexes with a silver salt of the formula: Ag.sub.2 (OOC--R'--COO), wherein R' is as identified above.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: May 31, 1988
    Assignees: Institut Obschei I Neorganicheskoi Khimii Imeni N.S. Kurnakova Akademii Nauk SSR, Vsesojuzny Onkologichesky Nauchny Tsentr Akademii Meditsinskikh
    Inventors: Petr A. Cheltsov-Bebutov, Alexandr N. Kravchenko, Robert N. Schelokov, Alexandra L. Konovalova, Mikhail A. Presnov, Viktor B. Ivanov
  • Mixed Cr.sub.2 O.sub.3 paste for CrO.sub.2 synthesis
    Patent number: 4747974
    Abstract: Chromic acid and inexpensive, coarse grained Cr.sub.2 O.sub.3 are dissolved in water prior to adding more costly fine grained Cr.sub.2 O.sub.3 to produce chrome pastes which are more economical than pastes prepared by prior art techniques employing only fine grained Cr.sub.2 O.sub.3. The pastes are equivalent to prior art pastes when reacted to form chromium dioxide.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: May 31, 1988
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Terry G. Crandall
  • Preparation of tetrafluoroethylene fine powder
    Patent number: 4748217
    Abstract: A bromate/bisulfite redox initiator system has been found useful for polymerizing tetrafluoroethylene to make resins of good stretch capability.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: May 31, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Satish C. Malhotra
  • Absorption and drying towers
    Patent number: 4747970
    Abstract: Absorption and drying towers for treating sulphur trioxide process gases and air, respectively, with concentrated sulphuric acid in the manufacture of sulphuric acid. Each tower has a suitably shaped downwardly angled gas delivery duct protruding into a lower chamber of the tower to prevent acid from entering inside the duct. Each tower also has its lower chamber defined by the base of the tower and a suitably formed packing support. Additional packing is interposed between the lower walls of the tower and the packing support. Improved corrosion resistance of the metal components is obtained.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: May 31, 1988
    Assignee: C-I-L Inc.
    Inventor: John McFarland
  • Structures surface modified with bidentate silanes
    Patent number: 4746572
    Abstract: A bidentate silane containing at least two silicon atoms bridged by certain groups, arranged to form at least a seven member ring system, is formed between the bidentate silane and the atoms to which the silane is covalently attached on the substrate surface.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: May 24, 1988
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Joseph L. Glajch, Joseph J. Kirkland
  • Hand-held fastening element driving tool
    Patent number: 4746047
    Abstract: A hand-held fastening element driving tool comprising a housing with a handle. A barrel holder with a barrel is free to move axially in the housing. The barrel holder has a extension enclosed in the housing and is provided with a cylindrical shoulder. This shoulder acts, through the agency of an elastic element, upon a corresponding shoulder of the housing. Another elastic element is fitted between the outer side surface of the barrel holder shoulder and the housing. A fastening element magazine has one end thereof connected to the barrel holder, and its other end is loosely articulated to the handle.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: May 24, 1988
    Assignee: Moskovskoe Naucho-Rpoizvodstvennoe Objedinenie PO Mekhanizirovannomu Stroitelnomu Instrumentu I Otdelchnym Mashinam
    Inventors: Vitaly T. Boiko, Boris G. Goldshtein, Antanas-Sharunas A. Maljukyavichus, Marlen A. Shneiderman, Karl K. Dubov, Arkady A. Buravtsov, Vladimir A. Gordeev, Grigory I. Grechushkin
  • Case for sterilization and sterile storage of objects
    Patent number: 4746496
    Abstract: A case for sterilization and sterile storage of objects comprises a hermetic housing (1), a partition (7) with one or several holes (10) dividing the interior of the housing (1) into two sections (8, 9), one of the sections being occupied by a sterilizing liquid, whereas the other accommodating holders (20) for the objects being sterilized. The section (8) for the sterilizing liquid occupies the lower part of the housing. The holes (10) of the partition (7) are grouped in its central portion and each of these holes (10) is provided with a tube (11) facing by its free end the inside of the section (8). The section (8) has on its wall opposite to the partition (7) a spherical projection (12) facing by its convex side the interior of the section (8).
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: May 24, 1988
    Assignee: Kharkovsky Nauchno-Issledovatelsky Institut Obschei I Neotlozhnoi Khirugii
    Inventors: Oleg A. Sorochenko, Viktor M. Gutorov
  • Shipping bag for particulate material
    Patent number: D296078
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: June 7, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Richard B. Nelson