Patents by Inventor Thomas R. Parayil
Thomas R. Parayil 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: 9951404Abstract: One aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with minimal crack propagation imparting a level of ballistic performance suitable for military armor applications. Certain embodiments of the steels according to the present disclosure have hardness in excess of 550 HBN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: GrantFiled: July 21, 2015Date of Patent: April 24, 2018Assignee: ATI PROPERTIES LLCInventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Publication number: 20170299343Abstract: An aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with low or no crack propagation imparting a level of ballistic performance suitable for military armor applications. Various embodiments of the steels according to the present disclosure have hardness in excess of 550 BHN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: ApplicationFiled: December 14, 2016Publication date: October 19, 2017Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Patent number: 9593916Abstract: An aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with low or no crack propagation imparting a level of ballistic performance suitable for military armor applications. Various embodiments of the steels according to the present disclosure have hardness in excess of 550 BHN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: GrantFiled: April 19, 2013Date of Patent: March 14, 2017Assignee: ATI Properties LLCInventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Publication number: 20150322554Abstract: One aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with minimal crack propagation imparting a level of ballistic performance suitable for military armor applications. Certain embodiments of the steels according to the present disclosure have hardness in excess of 550 HBN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: ApplicationFiled: July 21, 2015Publication date: November 12, 2015Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Patent number: 9121088Abstract: One aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with minimal crack propagation imparting a level of ballistic performance suitable for military armor applications. Certain embodiments of the steels according to the present disclosure have hardness in excess of 550 HBN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: GrantFiled: August 1, 2008Date of Patent: September 1, 2015Assignee: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Publication number: 20130233454Abstract: An aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with low or no crack propagation imparting a level of ballistic performance suitable for military armor applications. Various embodiments of the steels according to the present disclosure have hardness in excess of 550 BHN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: ApplicationFiled: April 19, 2013Publication date: September 12, 2013Applicant: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Patent number: 8444776Abstract: An aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with low or no crack propagation imparting a level of ballistic performance suitable for military armor applications. Various embodiments of the steels according to the present disclosure have hardness in excess of 550 BHN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: GrantFiled: October 19, 2009Date of Patent: May 21, 2013Assignee: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Patent number: 8361254Abstract: Maraging steel compositions, methods of forming the same, and articles formed therefrom comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 3.0 to 8.0% Ti, up to 0.5% Al, the balance Fe and residual impurities. The composition may be a first layer of a composite plate, and may have a second layer deposited on the first layer, the second layer having a composition comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 1.0 to 3.0 Ti, up to 0.5% Al, the balance Fe and residual impurities. The first layer may have a hardness value ranging from 58 to 64 RC, and the second layer may have a hardness value ranging from 48 to 54 RC. The first layer may be formed employing powdered metallurgical techniques. Articles formed from the compositions include armored plate.Type: GrantFiled: June 8, 2011Date of Patent: January 29, 2013Assignee: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Timothy M. Hackett, Tong C. Lee
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Publication number: 20120183430Abstract: One aspect of the present disclosure is directed to low-alloy steels exhibiting high hardness and an advantageous level of multi-hit ballistic resistance with minimal crack propagation imparting a level of ballistic performance suitable for military armor applications. Certain embodiments of the steels according to the present disclosure have hardness in excess of 550 HBN and demonstrate a high level of ballistic penetration resistance relative to conventional military specifications.Type: ApplicationFiled: August 1, 2008Publication date: July 19, 2012Applicant: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Glenn J. Swiatek
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Publication number: 20110236721Abstract: Maraging steel compositions, methods of forming the same, and articles formed therefrom comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 3.0 to 8.0% Ti, up to 0.5% Al, the balance Fe and residual impurities. The composition may be a first layer of a composite plate, and may have a second layer deposited on the first layer, the second layer having a composition comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 1.0 to 3.0 Ti, up to 0.5% Al, the balance Fe and residual impurities. The first layer may have a hardness value ranging from 58 to 64 RC, and the second layer may have a hardness value ranging from 48 to 54 RC. The first layer may be formed employing powdered metallurgical techniques. Articles formed from the compositions include armored plate.Type: ApplicationFiled: June 8, 2011Publication date: September 29, 2011Applicant: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Timothy M. Hackett, Tong C. Lee
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Patent number: 7981521Abstract: Maraging steel compositions, methods of forming the same, and articles formed therefrom comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 3.0 to 8.0% Ti, up to 0.5% Al, the balance Fe and residual impurities. The composition may be a first layer of a composite plate, and may have a second layer deposited on the first layer, the second layer having a composition comprising, by weight, 15.0 to 20.0% Ni, 2.0 to 6.0% Mo, 1.0 to 3.0 Ti, up to 0.5% Al, the balance Fe and residual impurities. The first layer may have a hardness value ranging from 58 to 64 RC, and the second layer may have a hardness value ranging from 48 to 54 RC. The first layer may be formed employing powdered metallurgical techniques. Articles formed from the compositions include armored plate.Type: GrantFiled: August 29, 2006Date of Patent: July 19, 2011Assignee: ATI Properties, Inc.Inventors: Ronald E. Bailey, Thomas R. Parayil, Timothy M. Hackett, Tong C. Lee
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Patent number: 7846276Abstract: The present disclosure provides alloys having an ultra-low coefficient of thermal expansion in the range of 60° F. to 80° F. The alloys have coefficient of thermal expansion no greater than 0.35×10?6° F.?1 in the range of 60° F. to 80° F. Methods of making such alloys also are provided, as well articles of manufacture including such alloys and methods of making such articles.Type: GrantFiled: May 1, 2007Date of Patent: December 7, 2010Assignee: ATI Properties, Inc.Inventors: David R. Hasek, Thomas R. Parayil
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Patent number: 6273973Abstract: A process for producing a steel includes subjecting at least a portion of a melt of the steel to electroslag remelting and, in a subsequent step, heating the steel to a temperature at least as great as the lowest temperature at which all carbides that can form in the remelted steel will dissolve and no greater than the nil ductility temperature of the of the remelted steel, and maintaining the temperature for a period of time sufficient to dissolve primary and clustered carbide particles in the remelted steel greater than 15 micrometers in length. A novel martensitic stainless steel also is disclosed including 0.65 to 0.70 carbon; 0 to 0.025 phosphorus; 0 to 0.020 sulfur; 0.20 to 0.50 silicon; at least one of greater than 0.0004 boron and greater than 0.03 nitrogen; 0.45 to 0.75 manganese; 12.7 to 13.7 chromium; and 0 to 0.50 nickel.Type: GrantFiled: December 2, 1999Date of Patent: August 14, 2001Assignee: ATI Properties, Inc.Inventors: Thomas R. Parayil, David S. Bergstrom, Raymond A. Painter
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Patent number: 5529644Abstract: A pressure-bonded composite material includes at least one layer of a stabilized low carbon steel core material and one layer of a stainless steel joined at an interface, wherein the stabilized carbon steel includes columbium (niobium) and at least one other carbide-forming element in amounts effective to prevent carbon migration from the carbon steel to the stainless steel and the composite material has a physical grain size no larger than ASTM #6.Type: GrantFiled: May 30, 1995Date of Patent: June 25, 1996Assignee: Allegheny Ludlum CorporationInventor: Thomas R. Parayil
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Patent number: 5370946Abstract: A pressure-bonded composite material includes at least one layer of a stabilized low carbon steel core material and one layer of a stainless steel joined at an interface, wherein the stabilized carbon steel includes columbium (niobium) and at least one other carbide-forming element in amounts effective to prevent carbon migration from the carbon steel to the stainless steel and the composite material has a physical grain size no larger than ASTM #6.Type: GrantFiled: March 31, 1993Date of Patent: December 6, 1994Assignee: Allegheny Ludlum CorporationInventor: Thomas R. Parayil