Patents by Inventor Arne W. Fliflet
Arne W. Fliflet 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: 9120679Abstract: This disclosure concerns a method of making silicon carbide involving adding agricultural husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).Type: GrantFiled: June 9, 2014Date of Patent: September 1, 2015Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Syed B Qadri, Arne W Fliflet, M Ashraf Imam, Bhakta B Rath, Edward P Gorzkowski, III
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Publication number: 20140287907Abstract: This disclosure concerns a method of making silicon carbide involving adding agricultural husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).Type: ApplicationFiled: June 9, 2014Publication date: September 25, 2014Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Syed B. Qadri, Arne W. Fliflet, M. Ashraf Imam, Bhakta B. Rath, Edward P. Gorzkowski, III
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Publication number: 20130272947Abstract: This disclosure concerns a method of making silicon carbide involving adding one from the group of rice husk material, sorghum, peanuts, maple leaves, and/or corn husk material to a container, creating a vacuum or an inert atmosphere inside the container, applying conventional heating or microwave heating, heating rapidly, and reacting the material and forming silicon carbide (SiC).Type: ApplicationFiled: March 8, 2013Publication date: October 17, 2013Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Syed B. Qadri, Arne W. Fliflet, M. Ashraf Imam, Bhakta B. Rath, Edward P. Gorzkowski, III
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Patent number: 8431071Abstract: A method of sintering by: placing a compacted metal powder inside a cylindrically-shaped susceptor and in an inert atmosphere or a vacuum, and applying microwave or millimeter-wave energy to the powder until the powder is sintered.Type: GrantFiled: August 27, 2010Date of Patent: April 30, 2013Assignee: The United States of America, as represented by the Secretary of the NavyInventors: M Ashraf Imam, Arne W Fliflet
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Publication number: 20120051962Abstract: A method of sintering by: placing a compacted metal powder inside a cylindrically-shaped susceptor and in an inert atmosphere or a vacuum, and applying microwave or millimeter-wave energy to the powder until the powder is sintered.Type: ApplicationFiled: August 27, 2010Publication date: March 1, 2012Applicant: THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVYInventors: M. Ashraf Imam, Arne W. Fliflet
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Patent number: 7795583Abstract: A long-range active thermal imaging system includes an electromagnetic radiation source in the range of from about 10 GHz to about 500 GHz; a beam controller for receiving and retransmitting the electromagnetic radiation in a desired direction toward and onto a surface of a target, thereby heating the target and producing an infrared radiation emission from the target surface; and an infrared imager, e.g. an infrared camera coupled to a processor and display, for receiving the target's infrared radiation emission and generating a thermal image of the target. The radiation source may be selected such that the radiation penetrates into the target to provide a thermal signature, e.g. from subsurface features or objects. The thermal signature exhibits rapid changes that can be monitored in real time. This may allow surface or subsurface details or objects to be detected that would not otherwise be apparent.Type: GrantFiled: October 6, 2006Date of Patent: September 14, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: Richard F Hubbard, Arne W Fliflet, Jeffrey H Bowles, David A Kidwell, Melissa K. Hornstein, Geoffrey B. Smith, David Lewis, III
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Patent number: 7022198Abstract: A method for joining similar materials to create multi-component assemblies so the joint materials share similar physical, chemical, and electrical characteristics with the base materials. The method includes aligning the materials, applying joining material, focusing a microwave beam on the joint area to initially heat the joint area to allow the joining material to soften and fill physical discontinuities while the surrounding surfaces remains cool, rapidly heating the joint area to the reactive area of the joining material, rapidly cooling the joint area and maintaining the joint area at a recrystallization temperature. The materials can be ceramics such as aluminum oxide.Type: GrantFiled: September 26, 2003Date of Patent: April 4, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ralph W. Bruce, David Lewis, III, Manfred Kahn, Arne W. Fliflet, Steven H. Gold
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Publication number: 20040255721Abstract: A method of forming a nanocrystalline metal, comprising the steps of: providing a reaction mixture comprising a metal precursor and an alcohol solvent; continuously flowing the reaction mixture through a reactor; applying microwave or millimeter-wave energy to the reaction mixture; wherein the microwave or millimeter-wave energy is localized to the vicinity of the reaction mixture; and heating the reaction mixture with the microwave or millimeter-wave energy so that the alcohol solvent reduces the metal precursor to a metal; wherein the heating occurs in the reactor.Type: ApplicationFiled: January 31, 2003Publication date: December 23, 2004Inventors: David Lewis, Ralph W. Bruce, Arne W. Fliflet, Steven H. Gold, Lynn K. Kurihara
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Patent number: 6833019Abstract: A method of forming a nanocrystalline metal, comprising the steps of: providing a reaction mixture comprising a metal precursor and an alcohol solvent; continuously flowing the reaction mixture through a reactor; applying microwave or millimeter-wave energy to the reaction mixture; wherein the microwave or millimeter-wave energy is localized to the vicinity of the reaction mixture; and heating the reaction mixture with the microwave or millimeter-wave energy so that the alcohol solvent reduces the metal precursor to a metal; wherein the heating occurs in the reactor.Type: GrantFiled: January 31, 2003Date of Patent: December 21, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventors: David Lewis, III, Ralph W. Bruce, Arne W. Fliflet, Steven H. Gold, Lynn K. Kurihara
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Patent number: 6802907Abstract: Process for removing microwave energy absorbing material disposed on a substrate without thermally and/or mechanically damaging the substrate and with reduced production of volatile matter comprising the steps of directing microwave energy at the coating of sufficient power to damage the coating and removing the damaged coating from the substrate.Type: GrantFiled: December 16, 2002Date of Patent: October 12, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventors: David Lewis, III, Arne W. Fliflet, Ralph W. Bruce
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Publication number: 20040173304Abstract: A method for joining similar materials to create multi-component assemblies so the joint materials share similar physical, chemical, and electrical characteristics with the base materials. The method includes aligning the materials, applying joining material, focusing a microwave beam on the joint area to initially heat the joint area to allow the joining material to soften and fill physical discontinuities while the surrounding surfaces remains cool, rapidly heating the joint area to the reactive area of the joining material, rapidly cooling the joint area and maintaining the joint area at a recrystallization temperature. The materials can be ceramics such as aluminum oxide.Type: ApplicationFiled: September 26, 2003Publication date: September 9, 2004Inventors: Ralph W. Bruce, David Lewis, Manfred Kahn, Arne W. Fliflet, Steven H. Gold
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Publication number: 20040112403Abstract: Process for removing microwave energy absorbing material disposed on a substrate without thermally and/or mechanically damaging the substrate and with reduced production of volatile matter comprising the steps of directing microwave energy at the coating of sufficient power to damage the coating and removing the damaged coating from the substrate.Type: ApplicationFiled: December 16, 2002Publication date: June 17, 2004Inventors: David Lewis, Arne W. Fliflet, Ralph W. Bruce
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Patent number: 6746510Abstract: Nanostructured metallic powders and coatings are processed by suspending a metal precursor in a glycol solution containing the constituent metal salts and using a millimeter wave beam as the heating source. The mixture is then heated to reduce the metal precursor to a metal precipitate. The precipitated metal may then be isolated.Type: GrantFiled: March 29, 2002Date of Patent: June 8, 2004Assignee: The United States of America as represented by the Secretary of the NavyInventors: Lynn K. Kurihara, Ralph W. Bruce, Arne W. Fliflet, David Lewis
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Publication number: 20040025635Abstract: Nanostructured metallic powders and coatings are processed by suspending a metal precursor in a glycol solution containing the constituent metal salts and using a millimeter wave beam as the heating source. The mixture is then heated to reduce the metal precursor to a metal precipitate. The precipitated metal may then be isolated.Type: ApplicationFiled: March 29, 2002Publication date: February 12, 2004Inventors: Lynn K. Kurihara, Ralph W. Bruce, Arne W. Fliflet, David Lewis
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Patent number: 5038077Abstract: A gyroklystron device includes an electron beam source, a plurality of bunching cavities and an output cavity. A first bunching cavity has an input coupling aperture for receiving an rf signal from an rf signal injecting source. Each of the bunching cavities has a first pair of substantially uniform-angle slots of a preselected angle, which are diametrically opposed, and extend axially, parallel to the direction of the electron beam and extend into drift regions on both sides of the cavities. The first pair of slots control the Q of a desired mode and higher order modes. A second and third pair of slots are diametrically opposed and extend axially, parallel to the direction of the first pair of slots, but are rotated 90 degrees circumferentially from the first pair of slots. These slots control the axial profile of any mode that leaks out beyond the desired mode and control the length of field interaction with the electron beam.Type: GrantFiled: January 31, 1989Date of Patent: August 6, 1991Assignee: The United States of American as represented by the Secretary of the NavyInventors: Steven H. Gold, Arne W. Fliflet
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Patent number: H1847Abstract: A high power, highly efficient, phase-stable frequency-multiplying magnicon microwave amplifier is disclosed having efficiencies that exceed 60%. The magnicon amplifier has an output cavity that receives an electron beam that is deflection modulated by the drive, gain and penultimate cavities of the magnicon amplifier. The output cavity is dimensioned so as to operate in a TM.sub.m10 mode, where m is an even integer greater than two. The output cavity is selected to preferably have an operating frequency f.sub.o which is twice the cyclotron frequency f.sub.c of the output cavity.Type: GrantFiled: January 31, 1996Date of Patent: April 4, 2000Assignee: United States of AmericaInventors: Arne W. Fliflet, Steven H. Gold