Patents Examined by Arthur P. Demers
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Patent number: 4713198Abstract: A plastic scintillator comprises a polymethylpentene thermoplastic material containing a fluorescent additive. This plastic scintillator material functions at high temperatures with excellent optical properties in the detection of neutrons. The plastic scintillator may also include an energy transfer compound, a wavelength shifter, a solubility enhancer for the polymethylpentene and a decolorizing agent.Type: GrantFiled: April 11, 1985Date of Patent: December 15, 1987Assignee: Sangamo Weston, Inc.Inventor: John J. Simonetti
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Patent number: 4713157Abstract: Methods for forming targets of ferroelectric, metal nitrate or similar material, methods for depositing such materials using ion beam techniques, and a method for forming a combined and integrated circuit/ferroelectric memory device wherein the ferroelectric material is deposited using ion beam techniques.Type: GrantFiled: May 14, 1985Date of Patent: December 15, 1987Assignee: Ramtron CorporationInventors: Larry McMillan, Carlos Paz de Araujo, George A. Rohrer
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Patent number: 4711708Abstract: An electrode that has a film adsorbed to its surface by reductive electropolymerization of (vbpy)Re(CO).sub.3 Cl (4-vinyl-4'-methyl-2,2'-bipyridine tricarbonylchlororhenium(I)) or its acetonitrile analogue, [(vbpy)Re(CO).sub.3 (MeCN)].sup.+ (4-vinyl-4'-methyl-2,2'-bipyridine tricarbonylacetonitrile rhenium (I)). The poly (vbpy)Re(CO).sub.3 Cl or poly-[(vbpy)Re(CO).sub.3 (MeCN)].sup.+ adsorbed onto the electrode, acts as a catalyst for CO.sub.2 reduction to CO. Stability and the reactivity of the polymer film may be increased by co-reductive electropolymeriaztion of either of the aforesaid Re complexes with [(bpy).sub.2 Ru(vpy).sub.2.sup.2+ ](bis(4-vinyl-pyridine)bis(2,2'-bipyridine) ruthenium (II)) (vpy is 4-vinylpyridine). A bilayer film assembly consisting of poly-[(bpy).sub.2 Ru(vpy).sub.2 ].sup.2+ as an inner film and the aforementioned copolymer of Ru/Re yields even greater reactivity to CO.sub.2.A method of forming a polymeric film on an electrode.A method of reducing CO.sub.Type: GrantFiled: October 9, 1986Date of Patent: December 8, 1987Assignee: Gas Research InstituteInventors: Thomas J. Meyer, Terrence R. O'Toole, Lawrence D. Margerum, T. David Westmoreland, William J. Vining, Royce W. Murray, B. Patrick Sullivan
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Patent number: 4710310Abstract: An electrolyte for electrolytic capacitor containing within an aprotic solvent a fluorocomplex acid salt of a N-heterocyclic compound as solute.An electrolyte for electrolytic capacitor according to the invention may conveniently be prepared by adding to an aqueous solution of fluorocomplex acid salt an equivalent amount of N-heterocyclic compound for reaction with subsequent dryness at reduced pressure to obtain an anhydrous salt which is then added to the aprotic solvent to prepare the resultant electrolyte having desired conductivity.Type: GrantFiled: January 21, 1987Date of Patent: December 1, 1987Assignee: Nippon Chemi-Con Corp.Inventors: Fumihiko Shinozaki, Yutaka Yokoyama
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Patent number: 4708811Abstract: An electrolyte for electrolytic capacitor containing within an aprotic solvent a tetrafluoroboric acid salt of a pyrylium or thiopyrylium compound as solute.An electrolyte for electrolytic capacitor according to the invention may conveniently be prepared by dissolving a tetrafluoroboric acid salt of a pyrylium or thiopyrylium compound to an aprotic solvent until a desired conductivity is obtained, for example, as an approximately 10% by weight solution.Type: GrantFiled: February 27, 1987Date of Patent: November 24, 1987Assignee: Nippon Chemi-Con CorporationInventors: Fumihiko Shinozaki, Yutaka Yokoyama
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Patent number: 4708780Abstract: A process for the electrocarboxylation of carbonyl compounds, for producing .alpha.-hydroxycarboxylic acids by means of the reaction: ##STR1## The electrolysis of the carbonyl compound is conducted in a diaphragm-less cell with a soluble metal anode in the presence of a support electrolyte and an organic solvent into which carbon dioxide is bubbled.The complex salt obtained by the electrolysis is precipitated by treatment with a solvent, and is then separated and hydrolyzed to obtain the required acid.Type: GrantFiled: January 15, 1986Date of Patent: November 24, 1987Assignee: Consiglio Nazionale Delle RicercheInventors: Giuseppe Silvestri, Salvatore Gambino, Giuseppe Filardo
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Patent number: 4708817Abstract: A creative art medium by which artistic expression could take the form of a uniform color layer upon a substrate visible under normal lighting conditions defining a first image, the layer carrying a co-planar latent luminescent image which is not discernible under normal light conditions through present and visible, this latent image being visible and distinguishable only under darkness conditions, said latent image not being an overlay. The color compositions are color matched. Only one composition includes one of a luminescent, fluorescent and phosphorescent component and is employed to form the latent image side by side with the image formed by the other color matched composition.Type: GrantFiled: August 8, 1986Date of Patent: November 24, 1987Inventor: Steven L. Dudnick
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Patent number: 4707231Abstract: The present invention relates to a process for the preparation of a composite material wherein the element used to reinforce the composite material is subjected to an electrostatic field induced by a high voltage electric current, said element being then impregnated with a liquid matrix material or precursor of matrix, while still under the influence of said field, and to the composite materials obtained by carrying out said process.Type: GrantFiled: September 19, 1985Date of Patent: November 17, 1987Assignee: Pradom LimitedInventor: Michel Berger
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Patent number: 4707230Abstract: A process for dehalogenating halogenated organic compounds comprising:(1) combining in an electrochemical cell(a)(i) a halogenated organic compound or (ii) a solid or fluid containing a halogenated organic compound with(b) a compound capable of forming an iminium ion having the formula (I) ##STR1## wherein X represents an oxygen atom or a sulfur atom,R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl group, an aryl group or a heterocyclic group, and R.sub.1 and R.sub.2 may combine and form a carbocyclic ring or a heterocyclic ring, andR.sub.3 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group or a halogen atom, and(2) applying an electrical voltage and an electrical current to an electrode of the electrochemical cell as a working electrode; which voltage is such that a reaction occurs and the halogenated organic compound is partially or completely dehalogenated.Type: GrantFiled: September 23, 1985Date of Patent: November 17, 1987Assignee: Tracer Technologies, Inc.Inventor: Alfred M. Ajami
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Patent number: 4707297Abstract: An aqueous guidepath coating composition includes a fluorescent dye, and an acrylic ionomer, and is particularly useful in positional control of and positional detection by stimulated emission-guided Automated Guidance Vehicles (AGV). This coating, used to mark the actual position of the guidance track to be followed by the AGV, affords unexpected improvements over previous guidepath compositions in removal and reapplication characteristics, in post-application durability and in substrate aesthetics.Type: GrantFiled: April 29, 1986Date of Patent: November 17, 1987Assignee: Bell & Howell CompanyInventors: Richard Paske, Jr., Michael Pallmer, William L. King, Jr.
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Patent number: 4707240Abstract: Method and apparatus are disclosed for improving the anodic life of an electrode in an electrodialysis stack which electrode comprises at least in part an area which is anodic during at least part of the duty time of said stack, which stack also comprises an electrode compartment (chamber, cell, space) containing said electrode, a counter-electrode in a counter-electrode compartment and interior compartments between said electrode compartment and said counter-electrode compartment, which method and apparatus comprises:(a) introducing into said electrode compartment (and means therefor) a solution capable of forming a film on said area which is anodic during at least part of the operating time of said stack, which film is characterized by being electronically conducting and substantially refractory anodically, and(b) causing a film derived at least in part from said solution to be formed on said area which is anodic during at least part of the duty time of said stack (and means therefor) said film characterizeType: GrantFiled: September 15, 1986Date of Patent: November 17, 1987Assignee: Ionics IncorporatedInventors: Edgardo J. Parsi, Keith J. Sims, Arthur L. Goldstein
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Patent number: 4707226Abstract: Chloroacetic and bromoacetic acids are dehalogenated by electrolysis of aqueous solutions of these acids using carbon cathodes and anodes likewise of carbon or of other conventional electrode materials in undivided or in divided electrolysis cells; the aqueous electrolysis solutions in the undivided cells and in the cathode area of the divided cells contain, in dissolved form, one or more salts of metals having a hydrogen excess-voltage of at least 0.4 V (at a current density of 4,000 A/m.sup.2). Metals having a hydrogen excess-voltage of at least 0.4 V (at a current density of 4,000 A/m.sup.2) are, for example, Cu, Ag, Au, Zn, Cd, Hg, Sn, Pb, Ti, Zr, Bi, V, Ta, Cr and Ni.The process allows high current densities (up to about 8,000 A/m.sup.2) to be used without or virtually without corrosion of the electrodes and without deposit formation on the electrodes.Type: GrantFiled: March 5, 1987Date of Patent: November 17, 1987Assignee: Hoechst AktiengesellschaftInventor: Steffen Dapperheld
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Patent number: 4705515Abstract: An osmotic device is disclosed for delivering a drug to the colon. The device comprises a laminated wall surrounding a compartment containing a drug with a passageway through the wall for dispensing the drug from the device. The laminated wall comprises three laminae, an inner semipermeable lamina, a middle lamina containing a salt of a fatty acid and an outer enteric lamina.Type: GrantFiled: June 23, 1986Date of Patent: November 10, 1987Assignee: ALZA CorporationInventors: Patrick S. L. Wong, Felix Theeuwes
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Patent number: 4705612Abstract: In a method for plasma-initiated polymerization by the steps of exposing a vapor phase containing monomer vapor to a plasma and introducing a polymerization initiating active seed consequently produced into a condensate phase of monomer thereby effecting chain-growth polymerization of the monomer, the improvement which comprises effecting the production of the polymer while keeping a radical polymerization initiator present at least in the aforementioned vapor phase.Type: GrantFiled: February 6, 1986Date of Patent: November 10, 1987Assignee: Terumo Kabushiki KaishaInventors: Takeshi Shimomura, Tohru Takahashi
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Patent number: 4705609Abstract: A method deriving phenyl isocyanate includes providing an electrolyte. The electrolyte is separated by an ion transferrable member so as to form a catholyte and an anolyte from the electrolyte. A cathode is placed in the catholyte and an anode is placed in the anolyte. Benzene and potassium isocyanate are provided to the anolyte. An electric voltage is applied across the cathode and the anode causing a reaction of the benzene and potassium isocyanate to yield phenyl isocyanate.Type: GrantFiled: November 13, 1986Date of Patent: November 10, 1987Inventor: Ronald L. Cook
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Patent number: 4704199Abstract: In a method of forming an iron oxide film of either Fe.sub.3 O.sub.4 or .alpha.-Fe.sub.2 O.sub.3 on a substrate with reactive sputtering of a target of iron, intensity of an emission spectrum of iron is previously determined as a predetermined value in connection with a desired one of Fe.sub.3 O.sub.4 and .alpha.-Fe.sub.2 O.sub.3 films. A light beam emitted from the glow discharge is measured to produce an electric signal representative of intensity of a measured spectrum of iron. Control operation is carried out to adjust the measured spectrum to the predetermined value. The electric signal may control either a flow rate of introducing oxygen gas into the space or intensity of an electric field produced between the substrate and the target.Type: GrantFiled: February 2, 1987Date of Patent: November 3, 1987Assignee: Anelva CorporationInventors: Toshio Yokokawa, Yohichi Hirukawa
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Patent number: 4702852Abstract: There is provided a multipolarly magnetized anisotropic plastics magnet formed by molding, followed by solidifying, a composition composed of a magnetic powder and an organic binder in the presence of a magnetic field, and subsequently multipolarly magnetizing the thus obtained anisotropic plastics magnet, said magnetic powder being magnetoplumbite ferrite which is characterized by that the green density is not less than 3.1 g/cm.sup.3 and the intrinsic coercive force of the green compact is not more than 2500 oersteds. The plastics magnet is useful as an anisotropic plastics magnet rotor having a great value of surface magnetic field.Type: GrantFiled: February 12, 1987Date of Patent: October 27, 1987Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Takashi Sakauchi, Fumihiko Mohri, Naohisa Tomoda, Satoshi Nakatsuka
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Patent number: 4702902Abstract: What is disclosed is an improvement in a process for the carbothermic reduction of silicon dioxide to form silicon, the improvement comprising (a) contacting the by-produced gases from the silicon furnace with a cooling medium such as a vaporizing liquified hydrocarbon-containing gas or an expanding compressed hydrocarbon-containing gas to cool the by-produced gases and to cause silicon-containing materials to completely condense and to form agglomerated solids; (b) removing the agglomerated, solid materials from the gases, and (c) recovering value from the solids-free by-produced gases as an energy source or as a chemical intermediate.Type: GrantFiled: March 25, 1987Date of Patent: October 27, 1987Assignee: Dow Corning CorporationInventors: Vishu D. Dosaj, John D. Oleson, Gary N. Bokerman
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Patent number: 4702810Abstract: Process and apparatus adds counterions into the aqueous solution of an electrode chamber of an electrolytic desalination or demineralization unit. In the demineralization unit, oppositely charged ions are electrolytically generated within electrode chambers and defused into the stream of aqueous solution to be demineralized. In their migration in response to the application of an electric potential, the ion streams are subjected to displacement steps in cation and anion exchange masses separated by selectively permeable ion exchange membranes. A counterion-containing liquid is subjected to an electrical voltage field, separate or in conjunction with the desalination unit, and the counterions to be added are passed through a selectively permeable ion exchange membrane into the respective electrode chamber of chambers of the desalination unit.Type: GrantFiled: December 24, 1985Date of Patent: October 27, 1987Inventor: Gerhard Kunz
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Patent number: RE32550Abstract: 2-Nitro-5-(halophenoxy)benzoic acids and esters, salts, amides, and acyl halides thereof comprise a class of compounds that are highly effective pre- and post-emergence herbicides.Type: GrantFiled: September 14, 1979Date of Patent: November 24, 1987Assignee: Rhone-Poulenc AgrochimieInventor: Robert J. Theissen