Patents Represented by Attorney Thomas McDonnell
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Patent number: 4039023Abstract: Heat transfer and thus temperature control of an environment is achieved by a method and apparatus which comprises withdrawing hydrogen from a first hydride reaction system in a two phase equilibrium at a certain temperature and pressure thereby causing a decomposition of a portion of the hydride, adding heat to the reaction system to compensate for the loss of heat caused by the endothermic hydride decomposition reaction, transferring the withdrawn hydrogen to a second hydride reaction system in a two phase equilibrium at a higher temperature and pressure thereby causing a formation of hydride and release of heat, and removing the heat created by the exothermic hydride formation reaction.Type: GrantFiled: February 25, 1976Date of Patent: August 2, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: Andrew W. McClaine
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Patent number: 4038647Abstract: A method of improving the holographic storage of data by yielding brighter olograms with higher densities which comprises recording an interferogram of an object wave and a reference wave into a holographically recordable medium consisting of an ionic crystal initially with a random distribution of anisotropic centers, and mutually off-set at an angle of at least sin.sup..sup.-1 10.lambda./d wherein d is the crystal thickness and .lambda. the wavelength of the coherent source; and then consecutively exposing the crystal to the object wave and the reference wave, each with a .pi./2 rotation in the plane of polarization but without any change in light intensity, wavelength, or crystal temperature.Type: GrantFiled: February 18, 1976Date of Patent: July 26, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: Irwin Schneider
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Patent number: 4036720Abstract: A method of separating isotopes of hydrogen which comprises subjecting a ture of nitrogen and isotopes of hydrogen in a H.sub.2 --N.sub.2 mole ratio from 1:4 to 10:1 to a glow electrical discharge from 10.sup..sup.-3 to 10.sup.+.sup.1 eV per reactant molecules at a temperature from 50.degree. K to 200.degree. K and at a pressure of at least 0.3 Torr.Type: GrantFiled: October 22, 1976Date of Patent: July 19, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Marion D. Clark, Thomas J. Manuccia
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Patent number: 4028270Abstract: An olefinic polymerization initiator comprising a micellar complex of a mll-forming detergent selected from the class consisting of C.sub.10 to C.sub.18 aliphatic-trimethylammonium bromide, C.sub.10 to C.sub.18 aliphatic-trimethylammonium chloride, hexadecyl pyridinium bromide, and hexadecylpyridinium chloride, and a bisulfite in a detergent-to-bisulfite mole ratio from 1:2 to 50:1.Type: GrantFiled: June 15, 1976Date of Patent: June 7, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: Oh-Kil Kim
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Patent number: 4026993Abstract: A method for preparing a mixture of decaborane-14 and an alkyl-substituted ecaborane-14 which comprises admixing an ethereal solution of nonaborane-14 ions with an alkaliboron halide at a temperature from 20.degree. C to 30.degree. C and at pressure from atmospheric pressure to 400 psig and a method of preparing decaborane-14 which comprises preparing an ethereal solution of nonaborane-14 by a reaction in an ethereal solution of an alkali metal borohydride with an excess of pentaborane-9 at temperature from 20.degree. C to 30.degree. C and admixing this ethereal solution of nonaborane-14 ions with diborane-6 at a temperature from 20.degree. C to 30.degree. C and at a pressure of at least 50 psig. Such compounds are useful as precursor compounds for the synthesis of important carborane derivatives, such as n-hexylcarborane (a catalyst for rocket propellants) and high-temperature-resistant carborane/siloxane polymers.Type: GrantFiled: August 23, 1976Date of Patent: May 31, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Jerome F. Ditter, Eugene B. Klusmann
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Patent number: 4026830Abstract: Tantalum phosphinates of the general formula: [Ta(OPRR'O).sub.p (Z).sub.5b.-p ].sub.n wherein 1.ltoreq.p.ltoreq.3; R and R' are aryl groups; Z may be a halo, alkoxy, or aryloxy group or a mixture thereof; and n may be any number. The preparation thereof is based on the reaction of a tantalum pentavalent compound (TaZ.sub.5) with a phosphinic acid (RR'P(O)OH) in a dry inert solvent at reflux temperature. Such compounds are useful in high temperature laminates as fillers. Oxide hydrates of these compounds may be prepared by hydrolysis and are similarly useful in high temperature laminates as fillers.Type: GrantFiled: August 18, 1975Date of Patent: May 31, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Hyman D. Gillman, James P. King
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Patent number: 4022811Abstract: Derivatives of perbromic acid of the formula: XBrO.sub.4 wherein X is Ag, H.sub.3).sub.2 CH, or (CH.sub.3).sub.2 C.sub.2 H.sub.3 prepared by a synthesis of silver perbromate through the reaction of dilute aqueous perbromic acid with silver oxide at a temperature from 0.degree. to 50.degree. C, followed by a removal of water and by a synthesis of isopropyl or isobutyl perbromate through the reaction of anhydrous silver perbromate suspended in a fluid selected from the class consisting of carbon tetrachloride, cyclohexane, and 1,1,2-trichlorotrifluoroethane with an alkyl bromide at a temperature from -25.degree. to 0.degree. C. Isopropyl and isobutyl perbromates are useful as oxidizing agents for alcohols.Type: GrantFiled: January 21, 1976Date of Patent: May 10, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Kurt Baum, Charles D. Beard, Vitautas Grakaukas
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Patent number: 4012492Abstract: Preparation of titanium tetraperchlorate, vanadium perchlorate, and chromyl erchlorate by the reactions of chlorine perchlorate with the respective anhydrous metal chlorides at a temperature from about -45.degree. C to about 20.degree. C. These perchlorates are useful in compounding gas generating compositions.Type: GrantFiled: June 10, 1975Date of Patent: March 15, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventors: Carl J. Schack, Donald Pilipovich
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Patent number: 4002504Abstract: A multifilament composite superconductor which comprises (1) a matrix she selected from the group consisting of a copper-gallium (Cu--Ga) alloy with a gallium content from 0.4 to 22 at.%, a copper-tin (Cu--Sn) alloy with a tin content from 1 to 11 at. %, and a copper-silicon (Cu--Si) alloy with a silicon content from 0.5 to 14 at. %; (2) multiple filaments embedded in said encasing matrix sheath and selected from the class consisting of a vanadium -gallium (V--Ga) alloy with a gallium content from 0.4 at. % to 12.5 at. %, a niobium-tin (Nb--Sn) alloy with a tin content from 0.1 at. % to 12.0 at. %, and vanadium-silicon (V--Si) alloy with a silicon content from 0.5 to 10 at. %; and (3) a continuous interfacial layer between said matrix and each filament of an A-15 compound selected from the class consisting of V.sub.3 Ga, Nb.sub.3 Sn, and V.sub.3 Si.Type: GrantFiled: December 23, 1975Date of Patent: January 11, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: David G. Howe
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Patent number: 3993631Abstract: N,N'-bis(3,4-dicyanophenyl) alkanediamides of the general formula: ##SPC1##Wherein R = (CH.sub.2).sub.n.sub.-2 and (CH.sub.2).sub.x CH(CH.sub.3)(CH.sub. 2).sub.y ; n = 3 to 20; x = 1 to 8; and y = 1 to 8, prepared by reacting 4-aminophthalonitrile with a saturated aliphatic dicarboxylic acid halide. These dinitriles readily polymerize through heating by themselves or with a metal or with a salt to form polyphthalocyanine resins, of the infinite molecular weight type which are useful as coatings, laminates, adhesives, filament windings, and castings. The general formulas for these polyphthalocyanine resins are: ##SPC2## ##SPC3##Wherein R = (CH.sub.2).sub.n.sub.-2 and (CH.sub.2).sub.x CH(CH.sub.3)(CH.sub.2).sub.y ; n = 3 to 20; x = 1 to 8; and y = 1 to 8.Type: GrantFiled: August 23, 1974Date of Patent: November 23, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: James R. Griffith, Jacques G. O'Rear
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Patent number: 3992352Abstract: The adduct of phosphorous oxychloride and hexamethylphosphoramide and alkoxy derivatives thereof useful for enhancing the fire retardancy of polyesters and a method of enhancing the fire retardancy of general purpose polyester resins through the combination therewith of an alkoxy derivative of the adduct of phosphorous oxychloride and hexamethylphosphoramide.Type: GrantFiled: October 24, 1975Date of Patent: November 16, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Robert M. Murch
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Patent number: 3992353Abstract: The adduct of phosphorous pentachloride (PCl.sub.5) and hexamethylphosphoramide ((Me.sub.2 N).sub.3 PO) and alkoxy derivatives thereof useful for enhancing the fire retardancy of polyesters and a method of enhancing the fire retardancy of general purpose polyester resins through the combination therewith of the aforedescribed alkoxy derivative.Type: GrantFiled: October 24, 1975Date of Patent: November 16, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Robert M. Murch
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Patent number: 3989475Abstract: A composite superconductor which comprises (1) a first layer of an alloy ected from the group consisting of a vanadium-gallium (V--Ga) alloy with a gallium content from 12.5 at. % to 17.5 at. %, a niobium-tin alloy (Nb-Sn) with a tin content from 12 at. % to 17.5 at. %, and a vanadium-silicon (V--Si) alloy with a silicon content from 10.0 at. % to 20.0 at. %; (2) an intermediate layer of an A-15 compound selected from the group consisting of V.sub.3 Ga, Nb.sub.3 Sn, and V.sub.3 Si; (3) a third layer of an alloy selected from the group consisting of copper-gallium (Cu--Ga) alloy with a gallium content greater than 22 at. % but not greater than 30.0 at. %, a copper-tin (Cu-Sn) alloy with a tin content greater than 11 at. % but not greater than 21.0 at. %, and a copper-silicon (Cu--Si) alloy with a silicon content greater than 14 at. % but not greater than 21 at. %.Type: GrantFiled: May 30, 1975Date of Patent: November 2, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: David G. Howe
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Patent number: 3981810Abstract: Grease compositions suitable for a salt water, high pressure and high shear nvironment over a wide temperature range which comprises from 82 to 89 weight percent of an ester-silicone oil base selected from the group consisting of a blend of isodecyl pelargonate, hexadecyl isostearate, and methyl-phenyl silicone, a blend of isodecyl pelargonate, tridecyl azelate, and methyl-phenyl silicone, and a blend of ethylhexyl adipate and methyl-phenyl silicone; from 4.9 to 7.5 weight percent of lithium stearate; from 2 to 3 weight percent of a rust inhibitor selected from the class consisting of barium and lead dinonylnaphthalene sulfonate; from 1.5 to 5 weight percent of antimony dialkylphosphorodithioate; from 0.2 to 0.6 weight percent of 2,6-di-tert-butyl-4-methylphenol and from 0.25 to 0.6 weight percent of a copper-silver corrosion inhibitor selected from the class consisting of tolyltriazol, disalicylal-propylenediamine, and 2-mercaptobenzothiazole.Type: GrantFiled: November 11, 1975Date of Patent: September 21, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Robert N. Bolster
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Patent number: 3975290Abstract: A method of coprecipitating a mixed oxalate to be used as a laser material in which one of the reactants is introduced as droplets formed by an aerosol into a bath containing the second reactant.Type: GrantFiled: November 20, 1973Date of Patent: August 17, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard C. Anderson
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Patent number: 3965283Abstract: Acrylic fibers coated with one or more manganese oxides; the use thereof to remove trace materials from liquids such as water; a method of preparation thereof which comprises soaking the fiber in alkali metal permanganate; and another method of preparation which comprises soaking the fiber in sequence in an alkali metal base, in manganese salt solution, and in an alkali metal base.Type: GrantFiled: December 18, 1974Date of Patent: June 22, 1976Inventor: Willard S. Moore
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Patent number: 3961964Abstract: A coating composition containing the active ingredient N,N-diglycidyl-2,4tribromoaniline which is used to suppress combustion of titanium metal.Type: GrantFiled: October 24, 1973Date of Patent: June 8, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: Meyer R. Achter, James R. Griffith
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Patent number: 3957672Abstract: A non-aqueous liquid surface-active composition for displacing aqueous or ganic liquid films from solid surfaces. The composition contains fluorinated polyethers having the formulaCF.sub.3 CF.sub.2 CF.sub.2 [OCF(CF.sub.3)CF.sub.2 ].sub.n OCHFCF.sub.3and may include a fluoro-alcohol, or a fluoro-acid a fluorinated diester solute and/or a fluorinated benzene solvent, fully fluorinated bromo- and chloro-alkane solvent or a perfluoroalkane solvent.Type: GrantFiled: November 23, 1973Date of Patent: May 18, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventors: William A. Zisman, Marianne K. Bernett
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Patent number: 3943197Abstract: The adduct of phosphorous pentachloride (PCl.sub.5) and hexamethylphosphoramide ((Me.sub.2 N).sub.3 PO) and alkoxy derivatives thereof useful for enhancing the fire retardancy of polyesters and a method of enhancing the fire retardancy of general purpose polyester resins through the combination therewith of the aforedescribed alkoxy derivative.Type: GrantFiled: June 19, 1974Date of Patent: March 9, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Robert M. Murch
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Patent number: 3941482Abstract: A method for determining the capability and optimum operating parameters of alkali halide crystals with anisotropic centers as holographic recording media by assessing the dispersion and absorption of polarized light by the anisotropic centers through a measurement of the difference in refractive index and absorption for light of different polarizations, the former through utilization of an ellipsometric technique wherein light passes successively through a polarizer, test crystal, analyzer, and detector.Type: GrantFiled: February 25, 1975Date of Patent: March 2, 1976Assignee: The United States of America as represented by the Secretary of the NavyInventor: Irwin Schneider