Patents by Inventor Tamer El-Raghy
Tamer El-Raghy 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: 7407903Abstract: The present invention relates to a material for use at temperatures exceeding 1200° C. and in oxidizing atmospheres consisting generally of an alloy between a metal, aluminium (Al) and carbon (C) or nitrogen (N). The invention is characterized in that the alloy has a composition MZAlYXW where M essentially consists of titanium (Ti), chromium (Cr) and/or niobium (Nb) and where X is carbon (C) or where X is nitrogen (N) and/or carbon (C) when M is titanium (Ti); and in that z lies in the range of 1.8 to 2.2, y lies in the range of 0.8-1.2 and w lies in the range 0.8-1.2, and wherein a protective oxide layer of Al2O3 is formed after heating to the mentioned temperature.Type: GrantFiled: January 27, 2004Date of Patent: August 5, 2008Assignee: Sandvik Intellectual Property ABInventors: Mats Sundberg, Kjell Lindgren, Tamer El-Raghy, Gustav Malmqvist
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Patent number: 7217907Abstract: Durable, stick resistant, stain resistant, dishwasher safe, and thermal shock resistant cooking utensils produced from a MAX phase and methods for their production are provided.Type: GrantFiled: October 22, 2004Date of Patent: May 15, 2007Assignee: 3-One-2 LLCInventors: Tamer El-Raghy, Patricia Lyons
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Publication number: 20060202389Abstract: Glove or condom formers of Mn+1AXn, wherein M is scandium, titanium, vanadium, chromium, zirconium, niobium, hafnium, and tantalum or a mixture thereof, A is aluminium (Al), silicon (Si), gallium (Ga), germanium (Ge), tin (Sn), lead (Pb) or indium (In) or a mixture thereof, X is carbon or nitrogen, and n is 1, 2 or 3, are provided. Methods for producing latex and synthetic polymer gloves and condoms with these formers are also provided.Type: ApplicationFiled: May 16, 2006Publication date: September 14, 2006Inventors: Tamer El-Raghy, Michael Barsoum
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Publication number: 20060194688Abstract: The present invention relates to a material for use at temperatures exceeding 1200° C. and in oxidizing atmospheres consisting generally of an alloy between a metal, aluminium (Al) and carbon (C) or nitrogen (N). The invention is characterized in that the alloy has a composition MzAlyXw where M essentially consists of titanium (Ti), chromium (Cr) and/or niobium (Nb) and where X is carbon (C) or where X is nitrogen (N) and/or carbon (C) when M is titanium (Ti); and in that z lies in the range of 1.8 to 2.2. y has in the range of 0.8-1.2 and w lies in the range 0.8-1.2, and wherein a protective oxide layer of Al2O3 is formed after heating to the mentioned temperature.Type: ApplicationFiled: January 27, 2004Publication date: August 31, 2006Inventors: Mats Sundberg, Kjell Lindgren, Tamer El-Raghy, Gustav Malmqvist
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Patent number: 6986873Abstract: A method of producing a single-phase composition Mn+1AzXn, primarily the production of the single-phase material Ti3SiC2, where n lies within a range of 0.8-3.2, where z lies within a range of 0.8-1.2, where M is at least one metal taken from the group of metals Ti (titanium), Sc (scandium), V (vanadium), Cr (chromium), Zr (zirconium), Nb (niobium) and Ta (tantalum), where X is at least one of the non-metals C (carbon) and N nitrogen), and where A is at least one of the chemical elements Si (silicon), Al (aluminum) and Sn (tin) or a compound of those elements, such that the final, desired compound will include the components Mn+1AzXn. A powder mixture of the components is formed and is ignited under an inert atmosphere to prevent promotion of dissociation and to cause the components to react.Type: GrantFiled: May 23, 2002Date of Patent: January 17, 2006Assignees: Sandvik AB, Drexel UniversityInventors: Mats Sundberg, Kjell Lindgren, Tamer El-Raghy, Michael Barsoum
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Publication number: 20050151297Abstract: A glove or condom former made of or coated with one or more transition metals and/or transition metal oxides is provided that exhibits improved durability over glove and condom formers currently in use.Type: ApplicationFiled: May 16, 2003Publication date: July 14, 2005Inventor: Tamer El-Raghy
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Publication number: 20050132957Abstract: The present invention relates to a method and a carrier body for coating cutting tools for chip removal. The carrier body is adapted to be used during coating of cutting tool inserts in a CVD and/or a MTCVD method. The carrier body is at least partially comprised of a material selected from the MAX phase family, i.e. Mn+1AXn (n=1,2,3) wherein M is one or more metals selected from the groups IIIB, IVB, VB, VIB and VIII of the periodic table of elements and/or their mixture, A is one or more metals selected from the groups IIIA, IVA, VA and VIA of the periodic table of elements and/or their mixture, and wherein X is carbon and/or nitrogen.Type: ApplicationFiled: December 22, 2004Publication date: June 23, 2005Applicants: SECO TOOLS AB, SANDVIK ABInventors: Tamer El-Raghy, Edward Laitila, Lena Pettersson, Gustav Malmqvist
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Publication number: 20050112414Abstract: Durable, stick resistant, stain resistant, dishwasher safe, and thermal shock resistant cooking utensils produced from a MAX phase and methods for their production are provided.Type: ApplicationFiled: October 22, 2004Publication date: May 26, 2005Inventors: Tamer El-Raghy, Patricia Lyons
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Publication number: 20040265405Abstract: A hot press tool for use in a hot press process is formed of at least one material selected from a group consisting of materials characterized by formula Mn+1AXn, whereinType: ApplicationFiled: June 30, 2003Publication date: December 30, 2004Inventors: Devrim Akyuz, Tamer El-Raghy
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Publication number: 20040250334Abstract: Glove or condom formers of Mn+1AXn, wherein M is scandium, titanium, vanadium, chromium, zirconium, niobium, hafnium, and tantalum or a mixture thereof, A is aluminium (Al), silicon (Si), gallium (Ga), germanium (Ge), tin (Sn), lead (Pb) or indium (In) or a mixture thereof, X is carbon or nitrogen, and n is 1, 2 or 3, are provided. Methods for producing latex and synthetic polymer gloves and condoms with these formers are also provided.Type: ApplicationFiled: September 19, 2003Publication date: December 16, 2004Inventors: Tamer El-Raghy, Michel W. Barsoum
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Publication number: 20040156772Abstract: A method of producing a single-phase composition Mn+1AzXn, primarily the production of the single-phase material Ti3SiC2, where n lies within a range of 0.8-3.2, where z lies within a range of 0.8-1.2, where M is at least one metal taken from the group of metals Ti (titanium), Sc (scandium), V (vanadium), Cr (chromium), Zr (zirconium), Nb (niobium) and Ta (tantalum), where X is at least one of the non-metals C (carbon) and N nitrogen), and where A is at least one of the chemical elements Si (silicon), Al (aluminum) and Sn (tin) or a compound of those elements, such that the final, desired compound will include the components Mn+1AzXn. A powder mixture of the components is formed and is ignited under an inert atmosphere to prevent promotion of dissociation and to cause the components to react.Type: ApplicationFiled: December 20, 2003Publication date: August 12, 2004Inventors: Mats Sundberg, Kjell Lindgren, Tamer El-Raghy, Michael Barsoum
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Publication number: 20030186636Abstract: A tool for cutting solid materials including a carrier material (2), and at least one abrasive body (1) embedded in the carrier material, with the carrier material includes a binder selected from a group Mn+1AXn, whereType: ApplicationFiled: March 27, 2002Publication date: October 2, 2003Inventors: Devrim Akyuz, Tamer El-Raghy
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Patent number: 6461989Abstract: A process is provided for forming a material comprising an M3X1Z2 phase comprising the steps of: (a) providing a mixture of (i) at least one transition metal species, (ii) at least one co-metal species selected from the group consisting of aluminum species, germanium species and silicon species, and (iii) at least one non-metal species selected from the group consisting of boron species, carbon species and nitrogen species; (b) heating said mixture to a temperature of about 1000° C. to about 1800° C., in an atmosphere within a substantially enclosed heating zone, for a time sufficient to form said M3X1Z2 phase; wherein the atmosphere has an O2 partial pressure of no greater than about 1×10−6 atm. The process provides a substantially single phase material comprising very little MZx-phase.Type: GrantFiled: December 22, 1999Date of Patent: October 8, 2002Assignees: Drexel University, Sandvik ABInventors: Tamer El-Raghy, Michel W. Barsoum, Mats Sundberg, Hans Pettersson
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Patent number: 6013322Abstract: A ceramic material is surface treated by contacting the surface of a 312 ternary ceramic material with a surface-modifying compound selected from carburization agents, silicidation agents, nitridation agents and boronization agents, at an elevated temperature of at least about 600.degree. C. for a period of time sufficient to provide a surface reaction layer of at least about one micron in thickness in the surface-treated material, preferably having a surface hardness in excess of about 6 GPa. A product made by the method of this invention is also disclosed having a surface hardness in excess of about 6 GPa, preferably at least about 10 GPa.Type: GrantFiled: July 9, 1999Date of Patent: January 11, 2000Assignee: Drexel UniversityInventors: Michel W. Barsoum, Tamer El-Raghy
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Patent number: 5942455Abstract: Products having single phases or solid solutions of the formula M.sub.3 X.sub.1 Z.sub.2 wherein M is a transition metal, X is Si, Al or Ge and Z is B, C or N can be prepared by taking a powdered mixture containing M, X and Z to a temperature of about 1000.degree. C. to about 1800.degree. C., optionally simultaneously under a pressure of about 5 MPa to about 200 MPa. The products so formed have excellent shock resistance, oxidation resistance and machinability. The products may also be present as composites, preferably composites which are in thermal equilibrium with the single phase or solid solutions of the formula M.sub.3 X.sub.1 Z.sub.2.Type: GrantFiled: March 6, 1996Date of Patent: August 24, 1999Assignee: Drexel UniversityInventors: Michael Barsoum, Tamer El-Raghy, Dmitri Brodkin, Antonios Zavaliangos, Surya Kalidindi
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Patent number: 5882561Abstract: A dense ceramic workpiece is made by a process of combining a powdered 312 component, e.g., Ti.sub.3 SiC.sub.2, with a powdered component that is soluble in the 312 component, e.g., TiSi.sub.2 in Ti.sub.3 SiC.sub.2, forming the mixture into a green body, heating the green body under pressureless sintering conditions to a temperature above a point at which a liquid is formed but below the melting point of the 312 compound to yield a dense ceramic workpiece, and thereafter cooling the dense 312 ceramic workpiece.Type: GrantFiled: November 22, 1996Date of Patent: March 16, 1999Assignee: Drexel UniversityInventors: Michel W. Barsoum, Tamer El-Raghy