Patents Examined by E. Suzanne Parr
  • Silver compositions
    Patent number: 4101710
    Abstract: Conductive silver compositions useful for producing in a single application step solderable metal coatings on titanate bodies especially semiconducting ceramic titanate bodies, the silver compositions comprising specific amounts of finely divided silver; boron, Ni.sub.3 B, and/or certain nickel boride/phosphides; and a binder which is glass and/or PbF.sub.2. These inorganic solids are dispersed in an inert liquid vehicle. Also these compositions fired on a dielectric substrate.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: July 18, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Sanford Morton Marcus
  • Resistor compositions
    Patent number: 4101708
    Abstract: Resistor compositions of inorganic powders dispersed in an inert vehicle, for making film resistors on dielectric substrates. The powders comprise certain proportions of RuO.sub.2, PbO-containing glass, Nb.sub.2 O.sub.5 and, optionally, CaF.sub.2. Also sintered resistors thereof adherent to such substrates.
    Type: Grant
    Filed: March 25, 1977
    Date of Patent: July 18, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John Robert Larry
  • Stabilized solutions of sodium dithionite
    Patent number: 4100098
    Abstract: Aqueous solutions containing mixtures of sodium dithionite and sodium sulfite having concentrations of greater than 13 percent by weight of Na.sub.2 S.sub.2 O.sub.4 are stabilized by adding potassium hydroxide in an amount which is sufficient to provide a residual of from about 1 to about 12 grams per liter of solution. These solutions can be stored at temperatures of from about 0.degree. to about 15.degree. C. without crystallization taking place.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: July 11, 1978
    Assignee: Olin Corporation
    Inventor: Phillip R. Magan
  • Electrically conductive composite materials
    Patent number: 4098724
    Abstract: An electrically conductive composite material which consists of a mixture of silver, not more than 50 weight percent of cadmium oxide and not greater than 2,000 parts per million of compounds of potassium.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: July 4, 1978
    Assignee: Plessey Handel und Investments A.G.
    Inventors: Peter Douglas, Thomas Ian Stewart
  • Low thermal expansive, electroconductive composite ceramics
    Patent number: 4098725
    Abstract: Low thermally expansive, electroconductive composite sintered ceramics comprised of a phase of at least one ceramics selected from the group consisting of low thermally expansive ceramics and negatively thermally expansive ceramics, having dispersed thereinto substantially in a continuous state a phase of an electroconductive substance such as a metal.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: July 4, 1978
    Assignee: Tokyo Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hirotaka Yamamoto, Hideaki Ninomiya, Makoto Kobayashi
  • Glycol and silicate-based surfactant composition
    Patent number: 4097406
    Abstract: A novel glycol and silicate-based surfactant composition is prepared by (a) obtaining a silicate-based component by a selective process involving (i) reaction of silicon tetrahalide with water and alcohol followed by (ii) transesterification with a polyether alcohol, and (b) subsequently combining the silicate-based component with glycols and/or polyglycol ethers. The resulting surfactant composition is utilized as a stabilizer in the production of polyurethane foam.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: June 27, 1978
    Assignee: Olin Corporation
    Inventors: Robert N. Scott, Thomas A. Knowles
  • Cobalt boride conductor compositions
    Patent number: 4097653
    Abstract: Cobalt boride conductor compositions of certain cobalt borides and, optionally, inorganic binder, dispersed in a vehicle and fireable in air to produce conductive films on substrates. Also the resultant sintered (fired) films.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: June 27, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Frank Knowles Patterson, Joseph Richard Rellick
  • Production of improved anodes for solid electrolyte capacitors
    Patent number: 4097415
    Abstract: Improved anodes for solid electrolytic capacitors are produced by introducing in the anode body made of a film forming sintered metal powder one of the following additives : tungsten, molybdenum, vanadium and hafnium, at the most suitable step of the manufacturing process previous to sintering under one of the following forms : pure metal, oxide, sulphide. In a preferred embodiment the additive is introduced in the binder used for pelletizing. In another embodiment the additive is introduced by dipping the presintered anodes in a solution containing said additive.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: June 27, 1978
    Assignee: Societe Lignes Telegraphiques et Telephoniques
    Inventors: Jean-Claude Moulin, Balint Escher, Dominique Prince
  • Acidizing asphaltenic oil reservoirs with acids containing salicylic acid
    Patent number: 4096914
    Abstract: A reservoir which contains an asphaltenic oil can be acidized with an aqueous acid without causing a deposition of permeability impairing iron-asphaltene compounds by dissolving or dispersing an effective amount of salicylic acid within at least the first injected portion of the aqueous acid.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: June 27, 1978
    Assignee: Shell Oil Company
    Inventors: William A. McLaughlin, Edwin A. Richardson
  • Method of producing high quality sponge coke or not to make shot coke
    Patent number: 4096097
    Abstract: High quality petroleum sponge coke suitable for use in the manufacture of electrodes is produced by adding an effective amount of an oxygen-containing carbonaceous material which tends to decompose at high temperatures, such as sawdust, coal, or lignite to delayed coker fresh and/or recycle feed. This addition eliminates or reduces the formation of shot coke and promotes the formation of high-quality, easy-to-grind petroleum sponge coke.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: June 20, 1978
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung-Yuan Yan
  • Cadmium sulfide film
    Patent number: 4095006
    Abstract: A method of forming a cadmium sulfide film from a solution containing a cadmium salt and a sulfur containing compound comprising inclusion of a chlorine containing compound in the solution utilized to form the cadmium sulfide film.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: June 13, 1978
    Assignee: Photon Power, Inc.
    Inventors: John Francis Jordan, Curtis Magill Lampkin
  • Antifoam composition and process with .alpha.-hydroxyamine derivatives
    Patent number: 4094812
    Abstract: Antifoam compositions on the basis of an .alpha.-hydroxyamine derivative of the formula ##STR1## wherein A is --NHCO-- or --NHCONH--, R.sub.1 and R.sub.2 are H or alkyl having 1 to 22 carbon atoms and the sum of the carbon atoms in R.sub.1 and R.sub.2 is from 8 to 22, and R.sub.3 is alkyl having 8 to 22 carbon atoms or hydroxyalkyl having 8 to 22 carbon atoms; as well as the process of controlling foam in a foamable liquid by introducing therein an antifoam effective amount of said .alpha.-hydroxyamine derivative. The antifoam .alpha.-hydroxyamine derivatives are effective antifoam agents for most industrial purposes and are suitable for use in oil and latex paints.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: June 13, 1978
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudi Heyden, Adolf Asbeck, Michael Eckelt, Manfred Petzold, Gunter Uphues
  • Bio-event electrode material
    Patent number: 4094822
    Abstract: An electrolyte for a bio-electric event measuring electrode combines a salt with adhesive. The adhesive serves as the vehicle for dispersing solvent to form the electrolyte in a solid or semisolid mixture. The adhesive serves further as a structural element in holding the parts of a practical electrode together and in making the electrode adhere to a subject's skin.
    Type: Grant
    Filed: October 21, 1976
    Date of Patent: June 13, 1978
    Inventor: John A. R. Kater
  • Polymeric compositions for manufacture of secondary electron multiplier tubes and method for manufacture thereof
    Patent number: 4093562
    Abstract: Disclosed are polymeric compositions for manufacture of secondary electron multiplier tubes. The polymeric compositions may be provided by combinations of (1) insulating polymers having a high secondary yield, (2) conductive particles such as carbon black, graphite or metal particles which may be granularly dispersed into the insulating polymers and (3) organic semiconductors soluble in and compatible with the insulating polymers and adapted to be molecularly dispersed therein. The organic semiconductors may be organic semiconducting polymers wherein the polymers themselves are conductive.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: June 6, 1978
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Yoshi Kishimoto
  • Resilient material which is electrically conductive under pressure
    Patent number: 4093563
    Abstract: A two-compound composite material becoming electrically conductive under a pressure applied thereupon comprising a non-corrosive thixotropic polymer having definite characteristics, said polymer being mixed with metallic particles.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: June 6, 1978
    Inventor: Manford Leslie Eaton
  • Electroconductive coatings
    Patent number: 4093564
    Abstract: An electroconductive clay coating for electrophotography having solvent hold-out characteristics is provided comprising an expandable clay, an alkali metal salt, and at least one organic compound from the group consisting of sugar syrups, anionic organic compounds and fluorochemicals. In those compositions using anionic organic compounds a synergism with the expanded clay appears to result.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: June 6, 1978
    Assignee: Yara Engineering Corporation
    Inventors: William F. Moll, Jr., Frank J. Botta
  • Aluminum containing precipitating agent for precious metals and method for its use
    Patent number: 4092154
    Abstract: A precipitating agent for precipitating precious metals such as gold from aqueous cyanide solution of the precious metal ions includes aluminum powder and a reducing agent such as sodium hydrosulfite, sodium borohydride or hydrazine. The precipitating agent may also include an alkali metal carbonate, such as potassium carbonate, as an activator. The precipitating agent efficiently reduces the precious metal ions to elemental metal for recovery and also consumes a portion of the cyanide content, which is often high in such solutions.The method of use includes adjusting the precious metals cyanide solution to a high pH, adding the precipitating agent with agitation, preferably in incremental portions of the amount required. The solution is allowed to stand to permit the precipitated metal to settle, and the metal is separated from the solution.
    Type: Grant
    Filed: September 2, 1976
    Date of Patent: May 30, 1978
    Assignee: American Chemical & Refining Co., Inc.
    Inventors: George Dietz, Jr., Robert M. Skomoroski
  • Pyrochemical separation of plutonium from irradiated nuclear fuels, by thermal decomposition in molten nitrates
    Patent number: 4092397
    Abstract: In the recovery of plutonium from irradiated nuclear fuel elements especially those coming from fast nuclear reactors, the improvement consisting in that the spent nuclear fuel elements are subjected to the action of a molten nitrate bath (mixed nitrates of alkali metals or alkaline earth metals), whereafter the plutonium thus obtained is further decomposed in a nitrate bath at a higher temperature, then the plutonium is recovered and a further thermal decomposition of the remaining material at a still higher temperature enables the uranium to be recovered. The recovery of plutonium requires the action of the nitric vapors, the recovery of uranium does not. Molten nitrates can likewise be recovered and recycled.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: May 30, 1978
    Assignee: Agip Nucleare, S.p.A.
    Inventors: Giovanni Brambilla, Giacomo Caporali
  • Semi-conductive coating for glass fibers
    Patent number: 4090984
    Abstract: A semi-conductive coating for glass fibers is disclosed, the coating comprising at least one polyacrylate emulsion, a conductive carbon black dispersion and a thixotropic gelling agent. The coating being suitable for application to glass fiber roving employed to produce electrical cables.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: May 23, 1978
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Kingso C. Lin, Donald J. Hammond
  • Photoconductive cadmium sulfide and process for producing same
    Patent number: 4090983
    Abstract: Photoconductive cadmium sulfide of high photosensitivity suitable for use in electrophotography. Such photoconductive cadmium sulfide is produced by subjecting cadmium sulfide powder to a heat treatment conducted at a temperature ranging from 200.degree. to 600.degree. C in an oxygen-containing inert gas atmosphere, incorporating the treated cadmium sulfide powder with a flux, an activator and sulfur in an amount of 0.002-0.05% by weight based on the cadmium sulfide powder and then baking the mixture in an inert gas atmosphere.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: May 23, 1978
    Assignee: KIP Corporation
    Inventor: Teruhisa Akaoka