Patents by Inventor Arnold T. Nielsen
Arnold T. Nielsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8017768Abstract: An improved method of preparing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,9.03,11]dodecane) (HNIW) is disclosed. The compound is useful as a high energy, high density explosive or propellant oxidizer.Type: GrantFiled: April 5, 1994Date of Patent: September 13, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: William P. Norris, Arnold T. Nielsen
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Patent number: 5693794Abstract: A new compound, 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo?5.5.0.0.sup.5,9.0 3,11 !dodecane) is disclosed and a method of preparation thereof. The new compound is useful as a high energy, high density explosive.Type: GrantFiled: September 30, 1988Date of Patent: December 2, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 5149818Abstract: Aminonitrobenzodifuroxan (CL-18) is prepared by directly converting pentanitroaniline to aminonitrobenzodifuroxan with heat in the presence of an excess of sodium azide. The pentanitroaniline is prepared in high yield from 3,5-dinitroaniline with a mixture of nitric acid and sulfuric acid in which the final sulfuric acid concentration is from 99.0 to 99.5%.Type: GrantFiled: October 1, 1990Date of Patent: September 22, 1992Assignee: The United States of America as represented by the Secretary of the NavyInventors: Stephen L. Christian, Andrew P. Chafin, Arnold T. Nielsen, Ronald L. Atkins, William P. Norris, Richard A. Hollins
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Patent number: 4935544Abstract: This invention illustrates a new compound, octanitrobenzidine. It is utild as a new high energy explosive compound. Octanitrobenzidine is formed by dissolving a tetrqanitrobenzidine with sulfuric acid in the presence of a metal sulfate catalyst. This reaction mixture is further reacted with nitric and sulfuric acid at a temperature sufficient to complete the reaction, then rapidly cooled, and octanitrobenzidine is recovered.Type: GrantFiled: July 17, 1980Date of Patent: June 19, 1990Assignee: The United States of America as represented by the Secretary of the NavyInventors: Arnold T. Nielsen, Ronald L. Atkins, William P. Norris
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Patent number: 4600536Abstract: A new polynitro compound pentanitrophenyl azide is disclosed, and a method of preparation is disclosed wherein hexanitrobenzene is reacted with sodium azide. This new polynitro compound is useful as an explosive.Type: GrantFiled: October 19, 1984Date of Patent: July 15, 1986Assignee: The United States of America as represented by the Secretary of the NavyInventors: Andrew P. Chafin, Arnold T. Nielsen
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Patent number: 4531013Abstract: A new compound 2,6-diamino-1,4,5,8-tetranitronaphthalene is disclosed and a method of preparation thereof. The new compound is useful as a high energy, high density explosive.Type: GrantFiled: August 3, 1984Date of Patent: July 23, 1985Assignee: The United States of America as represented by the Secretary of the NavyInventors: Albert A. De Fusco, Arnold T. Nielsen
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Patent number: 4451681Abstract: Pentanitrotoluene is prepared by a method which comprises preparing an amdinitrotoluene from a precursor of either TNT or 2,5-dinitro-3-methylbenzoic acid, nitrating the aminodinitrotoluene to produce a nitramine intermediate, converting the nitramine intermediate to an aminotetranitrotoluene and oxidizing the aminotetranitrotoluene with peroxydisulfuric acid to pentanitrotoluene. Pentanitrotoluene is an explosive.Type: GrantFiled: January 10, 1983Date of Patent: May 29, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ronald L. Atkins, Richard A. Hollins, William P. Norris, Arnold T. Nielsen, William S. Wilson
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Patent number: 4434304Abstract: A one pot process for the preparation of trinitrophloroglucinol by the addition of a nitric acid and sulfuric acid mixture to phloroglucinol in sulfuric acid where the nitric acid and phloroglucinol are present in stoichiometric amounts.Type: GrantFiled: October 15, 1982Date of Patent: February 28, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Albert A. DeFusco, Jr., Arnold T. Nielsen, Ronald L. Atkins
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Patent number: 4426539Abstract: Aminopolynitrotoluenes, having energetic properties, including 4-amino-2,,6-tetranitrotoluene 3-amino-2,4,5,6-tetranitrotoluene and 2-amino-3,4,5,6-tetranitrotoluene, and methods for their preparation. Also, 4-amino-N,2,3,6-tetranitrotoluene and 4-amino-N-2,3,5,6-pentanitrotoluene, each having energetic properties. Further, a process for preparing 2,3,4,5,6-pentanitrotoluene.Type: GrantFiled: May 11, 1982Date of Patent: January 17, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ronald L. Atkins, William P. Norris, Arnold T. Nielsen, Richard A. Hollins, William S. Wilson
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Patent number: 4262148Abstract: Hexanitrobenzene is prepared by oxidizing the amine group of pentanitroaniline with H.sub.2 O.sub.2 in H.sub.2 SO.sub.4. The compound is a high density explosive.Type: GrantFiled: January 18, 1980Date of Patent: April 14, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Arnold T. Nielsen, Ronald L. Atkins, William P. Norris
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Patent number: 4248798Abstract: Trinitrotoluene is selectively reduced by reaction with H.sub.2 S in p-dine to produce 4-amino-2,6-dinitrotoluene. This latter compound is then nitrated with HNO.sub.3 in H.sub.2 SO.sub.4 to produce pentanitroaniline which is, in turn, reacted with NH.sub.3 in benzene, methylene chloride or another suitable solvent to produce triaminotrinitrobenzene (TATB). TATB is useful as an explosive.Type: GrantFiled: January 28, 1980Date of Patent: February 3, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ronald L. Atkins, Arnold T. Nielsen, William P. Norris
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Patent number: 4220804Abstract: Substituted gem-dinitroalkanes are prepared by reacting a nitro olefin, tetranitromethane and an alcohol or organolithium derivative. The substituted gem-dinitroalkanes are useful as explosives, plasticizers and binders.Type: GrantFiled: November 20, 1978Date of Patent: September 2, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventors: Arnold T. Nielsen, Clifford D. Bedford
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Patent number: 4170707Abstract: Synthetic routes to 2,3,7,8-tetraazaspiro[4.4]nonane, its bispicrate salt, ,3,7,8-tetraazaspiro[4.4]nona-2,7-diene, and 3,8-dicarbomethoxy-2,3,7,8-tetraazaspiro[4.4]nona-1,6-diene. The compounds are useful as high density fuels.Type: GrantFiled: August 28, 1978Date of Patent: October 9, 1979Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 4170706Abstract: Synthetic routes to 2,3,7,8-tetraazaspiro[4.4]nonane, its bispicrate salt, ,3,7,8-tetraazaspiro[4.4]nona-2,7-diene, and 3,8-dicarbomethoxy-2,3,7,8-tetraazaspiro[4.4]nona-1,6-diene. The compounds are useful as high density fuels.Type: GrantFiled: August 28, 1978Date of Patent: October 9, 1979Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 4125728Abstract: Synthetic routes to 2,3,7,8-tetraazaspiro[4,4]nonane, its bispicrate salt, 2,3,7,8-tetraazaspiro [4,4]nona-2,7-diene, and 3,8-dicarbomethoxy:2,3,7,8-tetraazaspiro[4,4]nona-1,6-diene. Thecompounds are useful as high density fuels.Type: GrantFiled: September 1, 1977Date of Patent: November 14, 1978Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 4091040Abstract: A process for the production of trimethylolmethane in high yields. Trimetolmethane is useful as the essential precurser to trimethylolmethane trinitrate, a high-energy plasticizer and explosive.Type: GrantFiled: July 21, 1977Date of Patent: May 23, 1978Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 4066833Abstract: Synthetic routes to 2,3,7,8-tetraazaspiro [4.4] nonane, its bispicrate sa 2,3,7,8-tetraazaspiro [4.4]nona-2,7-diene, and 3,8-dicarbomethoxy-2,3,7,8-tetraazaspiro [4.4]nona-1,6-diene. The compounds are useful as high density fuels.Type: GrantFiled: November 22, 1976Date of Patent: January 3, 1978Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
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Patent number: 4012384Abstract: A series of high-density 7-(N-methyl-N-alkylamino)-1,3,5 triazaadamantanes re prepared. The preparation involves first adding the alkyl group to the parent amine by reacting the amine with a suitable aldehyde and hydrogen in the presence of a platinum catalyst and then reacting the thus produced secondary amine with formaldehyde and hydrogen in the presence of a nickel catalyst to produce the final product. The series represents a new class of fuels which is particularly useful in volume-limited applications.Type: GrantFiled: July 28, 1975Date of Patent: March 15, 1977Assignee: The United States of America as represented by the Secretary of the NavyInventor: Arnold T. Nielsen
