Patents by Inventor Moshe P. Dariel
Moshe P. Dariel 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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Publication number: 20020127130Abstract: A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid.Type: ApplicationFiled: December 27, 2001Publication date: September 12, 2002Applicant: US, as Represented by the Secretary, Dept. of Commerce, National Inst. of Standards &TechnologyInventors: David S. Lashmore, Moshe P. Dariel, Christian E. Johnson, Menahem B. Ratzker, Anthony A. Guiseppetti, Frederick C. Eichmiller, Glenn L. Beane, David R. Kelley
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Patent number: 6375894Abstract: A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid.Type: GrantFiled: May 9, 1995Date of Patent: April 23, 2002Assignees: The United States of America as represented by the Secretary of Commerce, American Dental Association Health FoundationInventors: David S. Lashmore, Moshe P. Dariel, Christian E. Johnson, Menahem B. Ratzker, Anthony A. Guiseppetti, Frederick C. Eichmiller, Glenn L. Beane, David R. Kelley
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Patent number: 6001289Abstract: A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid.Type: GrantFiled: October 4, 1994Date of Patent: December 14, 1999Assignee: Materials Innovation, Inc.Inventors: David S. Lashmore, Moshe P. Dariel, Christian E. Johnson, Menahem B. Ratzker, Anthony A. Guiseppetti, Frederick C. Eichmiller, Glenn L. Beane, David R. Kelley
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Patent number: 5711866Abstract: A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid.Type: GrantFiled: May 9, 1995Date of Patent: January 27, 1998Assignee: The United States of America as represented by the Secretary of CommerceInventors: David S. Lashmore, Moshe P. Dariel, Christian E. Johnson, Menahem B. Ratzker, Anthony A. Giuseppetti, Frederick C. Eichmiller, Glenn L. Beane, David R. Kelley
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Patent number: 5320719Abstract: A process for the production of a composition modulated alloy having a predetermined concentration is disclosed, in which alternating layers of at least two metals are successively deposited upon a substrate by electrodeposition, vacuum deposition, vapor deposition, or sputtering. The individual thicknesses of at least one metal's layers are varied in a predetermined manner. Pulsed galvanostatic electrodeposition using a tailored waveform is preferred. A copper-nickel concentration graded alloy is disclosed. Concentration graded alloys of predetermined concentration having at least one region of local homogeneity are also disclosed. The region of local homogeneity has a thickness corresponding to the thickness of two adjacent layers of different metals which have been diffusion annealed together. A pulsed electrodeposition/diffusion anneal process for production of such alloys is also disclosed.Type: GrantFiled: November 17, 1992Date of Patent: June 14, 1994Assignee: The United States of America as represented by the Secretary of CommerceInventors: David S. Lasbmore, Moshe P. Dariel
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Patent number: 5318746Abstract: Oxide-free metallic, alloy or intermetallic compound formed by coating a powder of at least one member selected from the group consisting of elemental metallic, alloy and intermetallic compound with an oxide-replacing metal. The oxide-free compound may be compacted without the addition of a liquid sintering agent and at temperatures below the melting point of the compound, under sufficient pressure to form a uniform, consolidated intermetallic body.Type: GrantFiled: December 4, 1991Date of Patent: June 7, 1994Assignee: The United States of America as represented by the Secretary of CommerceInventors: David S. Lashmore, John A. Tesk, Moshe P. Dariel, Edward Escalante
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Patent number: 5268235Abstract: A process for the production of a composition modulated alloy having a predetermined concentration is disclosed, in which alternating layers of at least two metals are successively deposited upon a substrate by electrodeposition, vacuum deposition, vapor deposition, or sputtering. The individual thicknesses of at least one metal's layers are varied in a predetermined manner. Pulsed galvanostatic electrodeposition using a tailored waveform is preferred. A copper-nickel concentration graded alloy is disclosed. Concentration graded alloys of predetermined concentration having at least one region of local homogeneity are also disclosed. The region of local homogeneity has a thickness corresponding to the thickness of two adjacent layers of different metals which have been diffusion annealed together. A pulsed electrodeposition/diffusion anneal process for production of such alloys is also disclosed.Type: GrantFiled: June 20, 1991Date of Patent: December 7, 1993Assignee: The United States of America as represented by the Secretary of CommerceInventors: David S. Lashmore, Moshe P. Dariel
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Patent number: 5158653Abstract: A process for the production of a composition modulated alloy having a predetermined concentration is disclosed, in which alternating layers of at least two metals are successively deposited upon a substrate by electrodeposition, vacuum deposition, vapor deposition, or sputtering. The individual thicknesses of at least one metal's layers are varied in a predetermined manner. Pulsed galvanostatic electrodeposition using a tailored waveform is preferred. A copper-nickel concentration graded alloy is disclosed. Concentration graded alloys of predetermined concentration having at least one region of local homogeneity are also disclosed. The region of local homogeneity has a thickness corresponding to the thickness of two adjacent layers of different metals which have been diffusion annealed together. A pulsed electrodeposition/diffusion anneal process for production of such alloys is also disclosed.Type: GrantFiled: September 26, 1988Date of Patent: October 27, 1992Inventors: David S. Lashmore, Moshe P. Dariel