Patents by Inventor Sunil Chandra Jha
Sunil Chandra Jha 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: 20140342497Abstract: A method for producing a metal article may include: Producing a supply of a composite metal powder by: providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder; and consolidating the composite metal powder to form the metal article, the metal article comprising a sodium/molybdenum metal matrix. Also disclosed is a metal article produced accordance with this method.Type: ApplicationFiled: August 1, 2014Publication date: November 20, 2014Inventors: Naresh Goel, Carl Cox, David Honecker, Eric Smith, Christopher Michaluk, Adam DeBoskey, Sunil Chandra Jha
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Patent number: 8465692Abstract: A method for producing a metal article may include: Producing a supply of a composite metal powder by: providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder; and consolidating the composite metal powder to form the metal article, the metal article comprising a sodium/molybdenum metal matrix. Also disclosed is a metal article produced accordance with this method.Type: GrantFiled: March 2, 2011Date of Patent: June 18, 2013Assignee: Climax Engineered Materials, LLCInventors: Naresh Goel, Carl Cox, Dave Honecker, Eric Smith, Chris Michaluk, Adam DeBoskey, Sunil Chandra Jha
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Patent number: 8147586Abstract: Method for producing molybdenum metal powder. The invention includes introducing a supply of ammonium molybdate precursor material into a furnace in a first direction and introducing a reducing gas into a cooling zone in a second direction opposite to the first direction. The ammonium molybdate precursor material is heated at an initial temperature in the presence of the reducing gas to produce an intermediate product that is heated at a final temperature in the presence of the reducing gas, thereby creating the molybdenum metal powder comprising particles having a surface area to mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter. The molybdenum metal powder is moved through the cooling zone.Type: GrantFiled: December 18, 2008Date of Patent: April 3, 2012Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Patent number: 8043405Abstract: Densified molybdenum metal powder. Densified molybdenum metal powder has substantially generally spherical particles, surface-area-to-mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50 g as determined by a Hall Flowmeter.Type: GrantFiled: December 18, 2008Date of Patent: October 25, 2011Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Patent number: 8043406Abstract: Molybdenum metal powder. Molybdenum metal powder includes molybdenum metal particles having a surface-area-to-mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter.Type: GrantFiled: December 18, 2008Date of Patent: October 25, 2011Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Publication number: 20110147208Abstract: A method for producing a metal article may include: Producing a supply of a composite metal powder by: providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder; and consolidating the composite metal powder to form the metal article, the metal article comprising a sodium/molybdenum metal matrix. Also disclosed is a metal article produced accordance with this method.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Applicant: Climax Engineered Materials, LLCInventors: Naresh Goel, Carl Cox, Dave Honecker, Eric Smith, Chris Michaluk, Adam DeBoskey, Sunil Chandra Jha
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Patent number: 7785390Abstract: Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles are larger than a size +100 standard Tyler mesh sieve. A method for producing molybdenum metal powder includes providing a supply of ammonium molybdate and a reducing gas; causing an exothermic reaction between the ammonium molybdate and the reducing gas at a first temperature to produce an intermediate reaction product and a supplemental reducing gas; causing an endothermic reaction between the intermediate reaction product and the reducing gas at a final temperature to produce the molybdenum metal powder.Type: GrantFiled: August 14, 2007Date of Patent: August 31, 2010Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson
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Patent number: 7588609Abstract: The claimed invention involves a novel composition of matter comprising a mixture of Fe—Mo Intermetallic and copper oxide. A novel composition of matter of Fe—Mo Intermetallic, copper oxide and calcium carbonate is also claimed. The claimed invention also involves a novel friction lining additive comprising Fe—Mo Intermetallic and copper oxide for improved braking effectiveness. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a friction lining additive according to the present invention. The claimed invention also includes a novel motor brush comprising Fe—Mo Intermetallic and copper oxide for improved wear. Fe—Mo Intermetallic, copper oxide and calcium carbonate may also be used as a motor brush additive according to the present invention.Type: GrantFiled: July 30, 2004Date of Patent: September 15, 2009Assignee: Climax Engineered Materials, LLCInventors: Mohamed H. Khan, Sunil Chandra Jha
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Publication number: 20090224200Abstract: The aqueous slurries according to the present invention include soluble salts of molybdenum dissolved in an oxidizing agent and deionized water. Other aqueous polishing slurries include dissolved and undissolved nanoparticles of MoO3 in a solution of deionized water and an oxidizing agent.Type: ApplicationFiled: May 20, 2009Publication date: September 10, 2009Applicant: Climax Engineered Materials, LLCInventors: Sunil Chandra Jha, Sreehari Nimmala, Sharath Hedge, Youngki Hong, Suryadevara Vijayakumar Babu, Udaya B. Patri
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Publication number: 20090181179Abstract: A method for producing a composite metal powder according to one embodiment of the invention may comprise: Providing a supply of molybdenum metal powder; providing a supply of a sodium compound; combining the molybdenum metal powder and the sodium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder.Type: ApplicationFiled: January 11, 2008Publication date: July 16, 2009Applicant: CLIMAX ENGINEERED MATERIALS, LLCInventors: Naresh Goel, Carl Cox, Dave Honecker, Eric Smith, Chris Michaluk, Adam DeBoskey, Sunil Chandra Jha
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Publication number: 20090116995Abstract: Densified molybdenum metal powder. Densified molybdenum metal powder has substantially generally spherical particles, surface-area-to-mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50 g as determined by a Hall Flowmeter.Type: ApplicationFiled: December 18, 2008Publication date: May 7, 2009Applicant: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
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Patent number: 7524353Abstract: Densified molybdenum metal powder and method for producing same. Densified molybdenum powder has substantially generally spherical particles, surface area to mass ratio of no more than about 0.5 m2/g as determined by BET analysis, and a flowability greater than about 32 s/50g as determined by a Hall Flowmeter. A method for producing densified molybdenum metal powder includes providing a supply of precursor material of molybdenum metal powder particles reduced from ammonium molybdate; providing a supply of reducing gas; densifying the precursor material in the presence of the reducing gas; and producing the densified molybdenum metal powder.Type: GrantFiled: February 17, 2006Date of Patent: April 28, 2009Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Patrick Ansel Thompson
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Publication number: 20090095131Abstract: Method for producing molybdenum metal powder. The invention includes introducing a supply of ammonium molybdate precursor material into a furnace in a first direction and introducing a reducing gas into a cooling zone in a second direction opposite to the first direction. The ammonium molybdate precursor material is heated at an initial temperature in the presence of the reducing gas to produce an intermediate product that is heated at a final temperature in the presence of the reducing gas, thereby creating the molybdenum metal powder comprising particles having a surface area to mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter. The molybdenum metal powder is moved through the cooling zone.Type: ApplicationFiled: December 18, 2008Publication date: April 16, 2009Applicant: Climax Engineering Materials, LLCInventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
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Publication number: 20090098010Abstract: Molybdenum metal powder. Molybdenum metal powder includes molybdenum metal particles having a surface-area-to-mass ratio of between about 1 m2/g and about 4 m2/g, as determined by BET analysis, and a flowability of between about 29 s/50 g and 86 s/50 g as determined by a Hall Flowmeter.Type: ApplicationFiled: December 18, 2008Publication date: April 16, 2009Applicant: CLIMAX ENGINEEREED MATERIALS, LLCInventors: Loyal M. Johnson, JR., Sunil Chandra Jha, Patrick Ansel Thompson
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Publication number: 20080277378Abstract: Method for polishing copper by chemical-mechanical planarization. The method of the present invention includes dissolving MoO3 in an oxidizing agent and deionized water to form a first slurry; filtering the first slurry; adding supplemental ceramic/metal oxide nano-particles to the first slurry after filtering, forming an aqueous slurry; introducing the aqueous slurry between the copper and a polishing pad; and, polishing the copper by moving the polishing pad and the copper relative to one another.Type: ApplicationFiled: June 27, 2008Publication date: November 13, 2008Applicant: Climax Engineered Materials, LLCInventors: S.V. Babu, Sharath Hegde, Sunil Chandra Jha, Udaya B. Patri, Youngki Hong
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Publication number: 20080213122Abstract: Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles are larger than a size +100 standard Tyler mesh sieve. A method for producing molybdenum metal powder includes providing a supply of ammonium molybdate and a reducing gas; causing an exothermic reaction between the ammonium molybdate and the reducing gas at a first temperature to produce an intermediate reaction product and a supplemental reducing gas; causing an endothermic reaction between the intermediate reaction product and the reducing gas at a final temperature to produce the molybdenum metal powder.Type: ApplicationFiled: August 14, 2007Publication date: September 4, 2008Applicant: CLIMAX ENGINEERED MATERIALS, LLCInventors: Loyal M. Johnson, Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson
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Patent number: 7276102Abstract: Molybdenum metal powder, and method for production thereof. Molybdenum metal powder has surface-area-to-mass-ratios in a range of between about 1.0 meters2/gram (m2/g) and about 3.0 m2/g, as determined by BET analysis, in combination with a particle size wherein at least 30% of the particles have a particle size larger than a size +100 standard Tyler mesh sieve. In addition, molybdenum metal powder 10 may be further distinguished by flowability in a range of between about 29 seconds/50 grams (s/50 g) and about 64 s/50 g, as determined by a Hall Flowmeter. A method of producing molybdenum powder may comprise providing a supply of ammonium molybdate, heating the ammonium molybdate at an initial temperature in the presence of a reducing gas to produce an intermediate product, and heating the intermediate product at a final temperature in the presence of the reducing gas, producing molybdenum metal powder.Type: GrantFiled: October 21, 2004Date of Patent: October 2, 2007Assignee: Climax Engineered Materials, LLCInventors: Loyal M. Johnson, Jr., Sunil Chandra Jha, Carl Cox, Patrick Ansel Thompson
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Patent number: 7186653Abstract: Aqueous polishing slurries for chemical-mechanical polishing are effective for polishing copper at high polish rates. The aqueous slurries according to the present invention may include soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent. Methods for polishing copper by chemical-mechanical planarization include polishing copper with low pressures using a polishing pad and a aqueous slurries including soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent, particles of MoO3 dissolved in an oxidizing agent, and particles of MoO2 dissolved in an oxidizing agent.Type: GrantFiled: January 11, 2005Date of Patent: March 6, 2007Assignee: Climax Engineered Materials, LLCInventors: Sunil Chandra Jha, Sreehari Nimmala, Sharath Hegde, Youngki Hong, Suryadevera V. Babu, Udaya B. Patri