Patents Examined by Harris A. Pitlick
  • Patent number: 4331549
    Abstract: Hydraulic fluids having high wet equilibrium reflux boiling points, good chemical stability and other desirable characteristics comprise certain cyano-substituted compounds of the formula ##STR1## wherein A and B are specified radicals.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: May 25, 1982
    Assignee: The Dow Chemical Company
    Inventor: Bart J. Bremmer
  • Patent number: 4321424
    Abstract: An oil capable of use in environments where the accumulation of water is detrimental to the intended use, the oil consisting of branched and straight chain aliphatic hydrocarbons and minor amounts of tri-cresyl phosphate.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: March 23, 1982
    Assignee: RTE Corporation
    Inventor: John H. Olmsted
  • Patent number: 4298489
    Abstract: A fire-resistant hydraulic fluid comprises (a) a phosphate triester derived from phenol, alkyl-substituted phenol or an alkanol, provided that the carbon atom number ratio of the aliphatic groups to the total of the ester is less than 0.25, and (b) 0.5 to 10% by weight, based on the weight of the triester, of an aliphatic polyester derived from an alkanedibasic acid having 3 to 24 carbon atoms and an alkylene glycol having 2 to 10 carbon atoms, said polyester having a molecular weight of 5,000 to 50,000. The fluid has an improved fire resistance and a high viscosity index.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: November 3, 1981
    Assignee: Kao Soap Co., Ltd.
    Inventors: Kenjiro Ohba, Kaichi Izumi, Shinichiro Yasuda
  • Patent number: 4295984
    Abstract: The invention relates to a paste-like, viscous damping medium dispersion based on a liquid phase and graphite, where at least one agent for increasing the intrinsic viscosity and at least one wetting agent for wetting the graphite are added to the dispersion. The dispersion according to the invention is free-flowing over a very large temperature range, does not increase in hardness when under load but remains viscous, and is noise-insulating. The dispersion according to the invention does not swell elastomers.
    Type: Grant
    Filed: October 3, 1979
    Date of Patent: October 20, 1981
    Inventor: Kaspar Lochner
  • Patent number: 4292462
    Abstract: Liquid, non-flammable dielectric compositions especially adapted as insulators/coolants for transformers and the like, are comprised of an admixture of [i] a bromochlorobenzene and [ii] a polychlorobenzene, and, optionally, [iii] a diluent therefor.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: September 29, 1981
    Assignee: Rhone-Poulenc Industries
    Inventor: Bruno Rey-Coquais
  • Patent number: 4292189
    Abstract: A thermal energy storage composition is disclosed that stores heat upon melting and releases heat upon solidification. It is composed of a mixture of sodium sulfate decahydrate, sodium carbonate decahydrate, sodium borate decahydrate and a thickening agent. Its good heat transfer characteristics, relatively high latent heat of fusion, low cost, and favorable melting point allow this material to be particularly useful for space heating applications.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: September 29, 1981
    Assignee: Pennwalt Corporation
    Inventor: Johnson C. Chen
  • Patent number: 4290926
    Abstract: An electrical capacitor is impregnated with a base impregnant of a non-halogenated aromatic liquid which absorbs gas in the range of 40.degree. to 100.degree. to which is added a material that is a greater gas absorber over the same temperature range.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: September 22, 1981
    Assignee: General Electric Company
    Inventor: David G. Shaw
  • Patent number: 4289642
    Abstract: This invention relates to detergent compositions comprising at least one nonionic and/or zwitterionic tenside and from about 0.5 to 10 percent by weight of polysaccharide amino ethers having quaternary ammonium groups. Builder salts and other conventionally used detergent compositions may also be present. These detergent compositions have sizing and stiffening properties and make a secondary treatment of washed textiles unnecessary.
    Type: Grant
    Filed: February 29, 1980
    Date of Patent: September 15, 1981
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Weber, Hans Andree
  • Patent number: 4288651
    Abstract: Dielectric gas mixture including a binary pair of gases with electric strengths in uniform or quasi-uniform fields which are higher than that for either component of the gases alone. Such binary pairs include (a) SF.sub.6 and CF.sub.3 CFCF.sub.2, (b) SO.sub.2 and CF.sub.3 CFCF.sub.2, and (c) SO.sub.2 and SF.sub.6.
    Type: Grant
    Filed: December 6, 1979
    Date of Patent: September 8, 1981
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Roy E. Wootton
  • Patent number: 4287078
    Abstract: A material formed by the reaction of (1) a poly-2-hydroxyalkyl derivative of a polyol having at least five hydroxyl groups, with at least three, and preferably nearly all, of said hydroxyl groups being substituted with one or more 2-hydroxyalkyl groups and (2) a polyglycidyl ether of a polyol, preferably a di- or triglycidyl ether of a polyoxyalkylene diol or triol. These materials have surfactant and defoaming abilities, and are useful in hard surface cleaning, textile and paper applications, and as defoaming agents. The compounds are especially useful as defoaming agent for glycol based antifreeze mixtures, and such antifreeze mixtures are also provided.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: September 1, 1981
    Assignee: BASF Wyandotte Corporation
    Inventors: William K. Langdon, Lester G. Lundsted
  • Patent number: 4287075
    Abstract: A novel ceramic composition exhibiting a solid solution structure of Pb(Fe.sub.1/2 Nb.sub.1/2)O.sub.3 -Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 -Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3, can be sintered at a low sintering temperature; have a high insulation resistance; have a relatively high dielectric constant in the high dielectric type ceramic dielectrics, and; have a low dielectric loss.A particular amount of the additives, i.e., Pb-(Mn.sub.2/3 W.sub.1/3)O.sub.3, Pb(Mb.sub.1/2 W.sub.1/2)O.sub.3 Pb(Mn.sub.1/2 Nb.sub.2/3)O.sub.3, MnO, Pb(Mn.sub.1/3 Ta.sub.2/3)O.sub.3, Li.sub.2 O, Cr.sub.2 O.sub.3 and CeO.sub.2, is added into the composition mentioned above.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: September 1, 1981
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Shinobu Fujiwara, Kiyoshi Furukawa, Nobuaki Kikuchi, Osamu Iizawa, Hitoshi Tanaka, Hisayoshi Ueoka
  • Patent number: 4287077
    Abstract: Gellation resistant aqueous glycol and glycol ether compositions useful as antifreeze compositions are disclosed containing silicates together with other corrosion inhibitors. The silicates are added to the glycol compositions after the other additives have been added and after the composition has been adjusted to a pH range of 7-12. The gellation resistance is obtained or enhanced by the addition of an effective amount of a glycol soluble ether modified silicone having the repeating units ##STR1## wherein x has an average value range from 1.8 to 6.8y has an average value range from 1 to 4Z has the formula--R--C.sub.n H.sub.2n O--.sub.m R.sub.1wheren is 2 or 3m has an average value such that the average molecular weight of the polyoxyalkylene chain is in the range 100-400R is an alkylene chain of 2-4 carbons andR.sub.1 is selected from the group consisting of hydrogen and alkyl groups of 1-4 carbons.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: September 1, 1981
    Assignee: The Dow Chemical Company
    Inventor: Phillip L. Wing
  • Patent number: 4285827
    Abstract: A method of making a paint stripper comprising mixing a water soluble cellulose gum e.g. hydroxy ethyl cellulose or ethyl cellulose, with water and with a film forming polymer e.g. an acrylic polymer, vinyl acrylic polymer, or vinyl acetate polymer, vinyl acetate copolymer, and adding to the resulting emulsion a mixture of methylene chloride and a cellulose gum which is soluble therein, e.g. ethyl cellulose or hydroxy propyl cellulose.The invention is from another aspect a paint stripper comprising methylene chloride emulsified in the presence of a film forming polymer.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: August 25, 1981
    Assignee: R.J. Hamer Limited
    Inventor: Sidney G. Wyatt
  • Patent number: 4284522
    Abstract: A liquid composition and method for forming the composition, the composition being intended for use in an oil-filled electrical apparatus to minimize the detrimental effects that can occur during high fault conditions which oil composition is biodegradable and formed from natural hydrocarbons and synthetic hydrocarbons which when combined form a flat pseudo-rectangular molecular weight distribution curve.
    Type: Grant
    Filed: February 27, 1979
    Date of Patent: August 18, 1981
    Assignee: RTE Corporation
    Inventor: John H. Olmsted
  • Patent number: 4283752
    Abstract: A dielectric material which meets the temperature requirements for X7R grade capacitors consists of a fired ternary niobate composition. A dielectric constant of at least 2000 and a limited change in dielectric constant with temperature is present in compositions having the approximate formula:Pb.sub.x .multidot.Ba.sub.y .multidot.Sr.sub.z (Nb.sub.2 O.sub.6)where x, y and z represent the mole fractions of each of Pb, Ba and Sr which are in the ranges of X=0.1 to 0.4, y=0.1 to 0.4, z=0.4 to 0.5, the sum of x, y and z being 1. Modifications which increase these ranges include doping the ternary niobate composition with a rare earth and substitution of Ta.sub.2 O.sub.5 for Nb.sub.2 O.sub.5. During preparation, the composition is heated in a cycle which produces a mixture of phases, primarily rhombohedral and tetragonal structures similar to those of PbNb.sub.2 O.sub.6.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: August 11, 1981
    Assignee: Corning Glass Works
    Inventor: Margaret M. Layton
  • Patent number: 4283427
    Abstract: A microwave heating package, and a method of microwave heating. Both the package and the method employ a lossy chemical susceptor which upon continued exposure to microwave radiation becomes substantially microwave transparent, thus building into the system a unique maximum temperature shut off at the point at which the chemical susceptor becomes microwave transparent. The chemical susceptor is comprised of a combination of a solute, such as inorganic salts of Group IA and IIA, and a polar solvent for the solute, such as water. The chemical susceptor may be composed of a hydrated form of the inorganic salts. The package, method and chemical susceptor may be used for microwave heating of many products, including among others, food products.
    Type: Grant
    Filed: December 19, 1978
    Date of Patent: August 11, 1981
    Assignee: The Pillsbury Company
    Inventors: William C. Winters, Hsien-Hsin Chang, George R. Anderson, Ross A. Easter, Jeffrey J. Sholl
  • Patent number: 4283297
    Abstract: Products for rapidly liberating areas covered by ice and/or snow are described, which products are composed as follows (weight %, relative to the total weight of all components):60 to 79% by weight of propyleneglycol and0 to 5% by weight of ethyleneglycol or70 to 85% by weight of ethyleneglycol and0 to 10% by weight of propyleneglycol.There are added in both cases5 to 15% by weight of water5 to 20% by weight of urea and1 to 5% by weight of monohydric aliphatic alcohols having from 1 to 7 carbon atoms.The products are harmless, biologically degradable, non-corrosive and of low flammability.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: August 11, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinrich Peters, Erich Surma
  • Patent number: 4281037
    Abstract: Compositions for cleaning and priming a surface comprising a solution of titanium acetylacetonate; alkanol having 1 to 4 carbon atoms; alkanol selected from methylethylkeytone, methylisobutylketone, acetone and their mixture; and water.The compositions, which perform both cleaning and priming in a one-step operation, cure quickly allowing rapid painting.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: July 28, 1981
    Assignee: DAP, Inc.
    Inventor: Hun R. Choung
  • Patent number: 4279765
    Abstract: A soap composition which contains from 0.01 to 6% by weight of a polydiorganosiloxane having a molecular weight of at least 2000 and in which at least one of the silicon-bonded substituents is a monovalent group composed of carbon, hydrogen, nitrogen and, optionally, oxygen, the monovalent group having therein at least one amino group. The polydiorganosiloxane imparts a durable soft feel to skin contacted with the soap.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: July 21, 1981
    Assignee: Dow Corning Limited
    Inventors: Michael P. L. Hill, Anthony N. Tizard
  • Patent number: 4277357
    Abstract: A polyphase composition for the storage of heat or cold utilizing the latent heat of fusion of a salt hydrate continuous phase intimately intermixed with a hydrated hydraulic cement continuous phase and wherein said continuous phases are optionally in contact with a discontinuous crystalline phase comprising a nucleating component and wherein the composition is enveloped, contained, or packaged within a vapor impermeable material.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: July 7, 1981
    Assignee: Boardman Energy Systems Incorporated
    Inventor: Bryan J. Boardman