Patents Examined by C. M. Bonner
  • Patent number: 5437852
    Abstract: A method of making water soluble pre-ceramic polymers includes heating hydrated metal salts above their melting points. A flow of air drives off water and most of the ligands. Polymerization occurs in the melt and the remaining side groups make the polymer soluble in water. Solubilization in water is accomplished by mixing the polymer with distilled water and heating the mixture at a temperature higher than about 60.degree. C. Thus prepared polymer solutions may be used to form fibers, films, and composite matrices.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: August 1, 1995
    Assignee: The Babcock & Wilcox Company
    Inventors: Sung S. Pak, Archie N. Tolley
  • Patent number: 5435938
    Abstract: Electrolytes are attached to fluorescent particle surfaces to prevent open spots in cathode-ray tube coatings dried at high temperatures. Electrolytes that are sulfates, nitrates, or chlorides of alkali or alkaline-earth metals are added to a liquid suspension of fluorescent particles which have passed through a cleaning step. Electrolytes are added to the suspension to make the conductivity of the clear top liquid greater than 30 .mu..OMEGA..sup.-1 cm.sup.-1. The fluorescent particle preparation process is finished with a final dehydration and drying step.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: July 25, 1995
    Assignee: Nichia Chemical Industries, Ltd.
    Inventors: Shoichi Bando, Yoshikatsu Aihara
  • Patent number: 5435930
    Abstract: Effective and environmentally benign liquid deicing and anti-icing compositions are provided by aqueous solutions of (a) alkali metal acetates, preferably KAc, (b) phosphate ion, e.g., H.sub.3 PO.sub.4 or K.sub.3 PO.sub.4, (c) soluble silicate,, e.g., K.sub.2 SiO.sub.3 or Na.sub.2 SiO.sub.3, (d) aromatic triazole, preferably tolyltriazole, (e) a dye which provides a visible hue, and (f) a compatible surfactant which lowers the surface tension to below about 50 dynes per sq. cm., prevents aggregation of components (a) to (f), and assures excellent dispersion across aircraft surfaces, preferablty octylphenoxypolyethoxy ethylphosphate. These compositions are environmentally safe and are useful in methods for deicing or preventative anti-icing of aircraft that meet AEA, ISO and SAE aviation standards. These compositions remain effective at low temperatures and are non-corrosive to metals used in aircraft construction.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: July 25, 1995
    Assignee: General Atomics International Services Corporation
    Inventors: Stephen K. Chan, Gale L. Hubred, Harold E. Todd
  • Patent number: 5435929
    Abstract: Magnetic components having a higher permeability than those obtained from Ni-Zn-based ferrite powder can be obtained by molding a composition comprising 5-30 wt. parts of polyarylene sulfide resin and 70-95 wt. parts (providing 100 wt. parts with the resin) of Ni-Zn-Cu-based ferrite powder. The Ni-Zn-Cu-based ferrite has a composition represented by the following formula (1):Ni.sub.a Zn.sub.b Cu.sub.c Fe.sub.2 O.sub.d,wherein a, b, c and d are numbers satisfying 0.10.ltoreq.a .ltoreq.0.70, 0.10.ltoreq.b.ltoreq.0.80, 0.10.ltoreq.c.ltoreq.0.35 and 3.97.ltoreq.d .ltoreq.4.20.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: July 25, 1995
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masashito Tada, Keiichiro Suzuki
  • Patent number: 5434125
    Abstract: A rare earth oxide superconducting material represented by REBa.sub.2 2Cu.sub.3 O.sub.y (RE is Y, Gd, Dy, Ito, Er or Yb), comprises oxide grains and at least one element selected from Rh and Pt, uniformly dispersed in the grain in a proportion of 0.01-5% by weight (in terms of element) based on the rare earth oxide superconducting material. The rare earth oxide superconducting material can be produced by a melt processing and gives a high critical current density even in a highly magnetic field.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: July 18, 1995
    Assignees: International Superconductivity Technology Center, NGK Insulators, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoyuki Ogawa, Takenobu Sakai, Izumi Hirabayashi
  • Patent number: 5433878
    Abstract: A method for producing fine particles of barium ferrite, which comprises reacting an aqueous solution comprising an iron compound, a barium compound and an alkaline substance, wherein the molar ratio of hydroxyl groups of the alkaline substance to the total of anions of the iron compound and the barium compound in the aqueous solution is from 1 to 4, and the reaction is carried out at a temperature of at least 250.degree. C. under a pressure of at least 200 kg/cm.sup.2 using a flow type reactor.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: July 18, 1995
    Assignee: Nissan Chemical Industries Ltd.
    Inventors: Kunio Arai, Tadafumi Ajiri, Shin-ichi Yuki, Isao Ota
  • Patent number: 5433888
    Abstract: A phosphor composition contains phosphor particles and a water-soluble rare earth compound uniformly covering the surfaces of the phosphor particles. The rare earth compound is present in an amount of from 0.001 to 5% by weight in terms of the corresponding rare earth oxide, based on the weight of the phosphor particles.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: July 18, 1995
    Assignee: Nichia Kagaku Kogyo, K.K.
    Inventors: Kouichi Okada, Toshiaki Tateiwa, Tetsuya Sadamoto, Yoshihito Hario, Yuji Itsuki, Masato Fujiwara, Osamu Sakai, Kenji Fujino
  • Patent number: 5431719
    Abstract: A foodstuffs parting composition for coating cooking surfaces composed of a water-in-oil emulsion prepared from lecithin, an edible oil component, an emulsifying agent selected from the group consisting of one or more of monocalcium phosphate, calcium chloride dihydrate, dibasic magnesium phosphate trihydrate and potassium chloride, and water. The lecithin is preferably acetylated lecithin, and the preferred emulsifying agent is monocalcium phosphate and is present in an amount of at least about 1 percent by weight of the composition. In alternative embodiments, mono- and diglycerides, including, e.g., phosphated mono- and diglycerides, are used as substitutes for the lecithin. Medium chain triglycerides are sometimes used with or in place of the edible oil as part of the edible oil component.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: July 11, 1995
    Assignee: Creative Products Inc. of Rossville
    Inventors: Clarence P. Clapp, George S. Torrey
  • Patent number: 5432351
    Abstract: The present invention relates to an X-ray intensifying screen comprising a support, a reflective layer, and a phosphor layer, wherein said phosphor is selected in the group of UV-blue emitting phosphors having their emission maximum at a wavelength shorter than 450 nm, and wherein a fluorescent dye is dispersed into the reflective layer or into a fluorescent dye layer interposed between said reflective layer and said phosphor layer, said fluorescent dye having its spectral absorption maximum at a wavelength shorter than 400 nm and its spectral emission maximum at a wavelength longer than 400 nm.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: July 11, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Sergio Pesce, Pierfiore Malfatto, Sergio Bruno
  • Patent number: 5431851
    Abstract: Composite electroluminescent phosphor particles may be made by forming, on a substrate, a composite layer comprising at least one layer of a dielectric or conductive material and at least one layer of an electroluminescent phosphor, physically removing the composite layer from the substrate, and pulverizing the composite layer to obtain composite electroluminescent phosphor particles.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: July 11, 1995
    Assignee: Osram Sylvania Inc.
    Inventors: Ronald E. Karam, Richard G. Gingerich
  • Patent number: 5429670
    Abstract: An improved gold paste for use in the manufacture of ceramic circuit boards is disclosed, which has a composition comprising an inorganic component, an organic binder, a solvent. The inorganic component contains (a) 84-94 wt % powdery gold with a particle size of 0.3-0.7 .mu.m, (b) 0.3-2.0 wt % powdery V.sub.2 O.sub.5 with a particle size of 0.3-2.0 .mu.m, and (c) 0.3-2.0 wt % powdery CuO with a particle size of 0.3-2.0 .mu.m.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: July 4, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Akihiko Miyoshi
  • Patent number: 5429754
    Abstract: A fabric conditioning composition comprising a water soluble polymer having a hydrophilic backbone associated with an acidic group used to improve formulation and stability of such compositions.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: July 4, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Samuel Q. Lin, Liang S. Tsaur, Lucia V. Salas
  • Patent number: 5429762
    Abstract: A cooling agent which cools by an endothermic reaction resulting from the dissolving of crystals of inorganic salts water, the salts crystallizing at about room temperature by supplying heat. The cooling agent comprises a mixture of (i) a sodium phosphate salt, (ii) a sodium ammonium phosphate salt or an ammonium phosphate salt, and (iii) water. The cooling agent is produced in a manner which avoids the conglomeration of the crystals, which was a difficulty in the art. Moreover, the cooling agent of the present invention can be used repeatedly. When a nucleating agent, a highly water absorbent polymer or a thickener is added to the cooling agent, the precipitation of the crystals occurs in a still finer and stabler state. The cooling agent can be used in a cooling pillow having a desirable cooling property and a soft and agreeable touch, which offers comfort with safety and which is free from conglomeration of crystals, even after a long period of time.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: July 4, 1995
    Assignee: Japan Pionics Co., Ltd.
    Inventors: Koichi Kitahara, Yasuhiko Koiso, Yoshiki Matsumoto, Masayuki Fujisawa, Isao Nagatsu, Mamoru Takahashi
  • Patent number: 5429763
    Abstract: According to the invention, a melting composition based on alkali chloride and water is spread on the traffic surface, the melting composition being a mixture containing a small proportion of an additive which increases the thixotropic properties of the mixture without substantially modifying its melting properties. The additive is, for example, hydrophilic pyrogenated colloidal silica, or a hydrated aluminum and/or magnesium silicate, in powder form, of the bentonite or montmorillonite type. The viscosity of the melting composition is thereby increased and simultaneously the speed of evacuation is decreased. The process finds application in the maintenance of pavements during winter.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: July 4, 1995
    Assignee: Astreintes Routieres Hivernales (A.R.H.) S.A.R.L.
    Inventor: Francis Dieupart
  • Patent number: 5427697
    Abstract: The present invention relates to clear or translucent, rinse-added fabric softening compositions comprising from about 20% to about 80% imidazoline, imidazolinium, and/or di(2-amidoethyl)methyl quaternary ammonium fabric softener active, from about 2% to about 25% C.sub.8 -C.sub.22 mono-alkyl cationic quaternary ammonium compound dispersibility aids, and from about 17% to about 75% non-aqueous organic solvent, wherein the fatty acyl groups of the softener active have an average Iodine Value of at least about 50. Preferably the compositions have a viscosity of from about 15 cps to about 500 cps when diluted with from about 1:1 to about 1:5, softening composition to water.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: June 27, 1995
    Assignee: The Procter & Gamble Company
    Inventor: Donald M. Swartley
  • Patent number: 5425887
    Abstract: A tumble dryer article comprising an effective amount of a fabric conditioning composition containing from about 60 to about 99 wt. % of a hydrocarbon based fabric conditioning componenta) an effective amount of a fabric conditioning composition having(i) from about 60 to about 99 wt. % of a hydrocarbon based fabric conditioning component; and(ii) 0.5 wt. % to 30 wt. % perfume capsules consisting essentially of a water soluble natural or modified natural or synthetic polymer and 1% to 70% perfume, the fabric conditioning composition having 10 wt. % or less free water when 0.5 wt. % to 10 wt. % perfume capsules are present and a free water to perfume capsules ratio of less than about 1 when more than 10 wt. % perfume particles are present; andb) dispensing means for dispensing the fabric conditioning composition onto fabrics in a tumble dryer.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: June 20, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Andrew C. Lam, Liang S. Tsaur, Samuel Q. Lin, Hifzur R. Ansari
  • Patent number: 5425804
    Abstract: A novel water-repellent glazing agent is disclosed. The agent contains a modified organic silicone oil, which is represented by the general formula ##STR1## wherein X.sup.1, X.sup.2 and X.sup.3 respectively stand for CH.sub.3 or a long chain alkyl group having 10-30 carbon atoms and at least one of X.sup.1, X.sup.2 and X.sup.3 is a long chain alkyl group having 10-30 carbon atoms and m and n are respectively 20-80 and 3-10. This agent has excellent water repellency and glazing effect as well as excellent operability.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: June 20, 1995
    Assignee: Taiho Industries Co., Ltd.
    Inventors: Seigo Shinohara, Kiyoshi Okamura, Tetsuo Kijima
  • Patent number: 5425889
    Abstract: In a method for producing a PZT piezoceramic, an intermediate compound is formed having the formula Zr.sub.x Ti.sub.1-x (O.sub.2 (ZTO) in a hydrothermal process. A ceramic having a desired zirconium/titanium ratio can be produced from two such ZTO powders having respectively different x-values. These powders are blended with lead oxide, and if desired with dopants, and are converted into a PZT powder by calcining. The calcined PZT powder is then sintered to form a high-density PZT ceramic which can be aligned precisely at the morphotropic phase boundary.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: June 20, 1995
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl Lubitz, Gabriele Preu, Dieter Cramer
  • Patent number: 5424261
    Abstract: An aluminum nitride ceramic having desired properties suitable for electronic packaging applications can be prepared from a novel aluminum nitride powder/sintering aid mixture. The sintering aid comprises a glassy component formed from alumina, calcia and boria, and a non-vitreous component comprising an element or compound of a metal of Group IIa, IIIa, or the lanthanides, preferably crystalline oxides, reactible with the crystallized glass component and the alumina from the AlN grains. Alternatively, the sintering aid comprises a multi-component glass composition capable of forming the above components upon melting and thereafter crystallizing upon reaction.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: June 13, 1995
    Assignees: The Carborundum Company, IBM Corporation
    Inventors: Jonathan H. Harris, Subhash L. Shinde, Takeshi Takamori, Robert A. Youngman
  • Patent number: 5423995
    Abstract: The invention relates to a piezoelectric ceramic material based on lead zirconate titanate and further additives, which contains as additives complex compounds having the formulaA(W.sub.1/3.sup.6+ Ni.sub.2/3.sup.3+)O.sub.3 or A(W.sub.1/2.sup.6+ Ni.sub.1/2.sup.2+)O.sub.3with A=Pb, Sr, Ba or Ca as ternary or quaternary solid solutions in an amount from 1 to 10 mol %, based on the total amount of ceramic material. The ceramic material of the invention can be advantageously used in sound or ultrasound transducers for acoustics or underwater sound applications or in actuators.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: June 13, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunter Helke, Hans-Joachim Langer