Patents by Inventor JYOTHI KADALI
JYOTHI KADALI 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: 11933553Abstract: An aluminum alloy fin stock material comprising about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg and 0.0-3.0% Zn, with remainder Al and impurities at ?0.15 wt. %. The aluminum alloy fin stock material is produced in a form of a sheet by a process comprising the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of one or more of pre- and/or post-brazes strength, conductivity, sag resistance and corrosion potential. It is useful for fabrication of heat exchanger fins.Type: GrantFiled: March 28, 2022Date of Patent: March 19, 2024Assignees: NOVELIS INC., DENSO CORPORATIONInventors: Kevin Michael Gatenby, Hany Ahmed, Andrew D. Howells, Jyothi Kadali, Derek Aluia, John Michael Baciak, III
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Publication number: 20240076767Abstract: Disclosed herein are high strength, corrosion resistant, and sag resistant aluminum alloys, methods of making and processing such alloys, and products prepared from such alloys. More particularly, disclosed are novel aluminum alloys exhibiting improved mechanical strength, formability, and corrosion resistance. The alloys can be used as fin stock in industrial applications, including in heat exchangers.Type: ApplicationFiled: January 12, 2022Publication date: March 7, 2024Applicant: Novelis Inc.Inventors: Jyothi Kadali, Eider A. Simielli
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Publication number: 20220324065Abstract: Provided are new aluminum alloys for use as one or more cladding layer(s) in clad aluminum alloy products for brazing applications. The cladding layer(s) include constituents that break and remove the oxide film on metal parts to be joined to produce high-strength brazing joints without the use of corrosive flux. Also provided herein are corrosion-resistant aluminum sheet packages including one or more of the aluminum alloy cladding layer(s) and an aluminum alloy core.Type: ApplicationFiled: April 20, 2020Publication date: October 13, 2022Applicant: Novelis Inc.Inventor: Jyothi Kadali
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Publication number: 20220221236Abstract: An aluminum alloy fin stock material comprising about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg and 0.0-3.0% Zn, with remainder Al and impurities at ?0.15 wt. %. The aluminum alloy fin stock material is produced in a form of a sheet by a process comprising the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of one or more of pre- and/or post-brazes strength, conductivity, sag resistance and corrosion potential. It is useful for fabrication of heat exchanger fins.Type: ApplicationFiled: March 28, 2022Publication date: July 14, 2022Applicants: NOVELIS INC., Denso CorporationInventors: Kevin Michael Gatenby, Hany Ahmed, Andrew D. Howells, Jyothi Kadali, Derek Aluia, John Michael Baciak, III
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Patent number: 10889882Abstract: Provided herein are new aluminum alloy materials which are useful in replacing copper in a heat exchanger. The aluminum alloy materials are also useful in manufacturing components of heating, ventilating, air-conditioning, and refrigeration (HVAC&R) systems for indoor and outdoor units. The alloys are well-suited for tubing in a heat exchanger. The alloys display high strength and good corrosion resistance. Also provided herein are methods for making the aluminum alloy materials.Type: GrantFiled: March 3, 2017Date of Patent: January 12, 2021Assignee: Novelis Inc.Inventors: Jyothi Kadali, Eider Alberto Simielli, Kevin Michael Gatenby
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Publication number: 20200080172Abstract: An aluminum alloy fin stock material comprising about 0.9-1.4 wt. % Si, 0.3-0.6 wt. % Fe, 0.20-0.60 wt. % Cu, 1.0-1.7 wt. % Mn, 0.01-0.25 wt. % Mg, 0.01-3.0 wt. % Zn, up to 0.10 wt. % Ti, with remainder Al and impurities at ?0.15 wt. %. The aluminum alloy fin stock material is produced by a process including the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of pre- and/or post-braze strength, thermal conductivity, sag resistance and/or corrosion potential.Type: ApplicationFiled: September 3, 2019Publication date: March 12, 2020Applicant: Novelis Inc.Inventors: Jyothi Kadali, Kyle Dasch, Julia L. Woods
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Publication number: 20180251878Abstract: Disclosed herein are high-strength, highly formable, and corrosion resistant aluminum alloys, methods of making and processing such alloys, and products prepared from such alloys. More particularly, disclosed are novel aluminum alloys exhibiting improved mechanical strength, formability, and corrosion resistance. The alloys can be used as fin stock in industrial applications, including in heat exchangers.Type: ApplicationFiled: March 3, 2017Publication date: September 6, 2018Applicant: Novelis Inc.Inventors: Jyothi Kadali, Eider Alberto Simielli
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Publication number: 20170342536Abstract: Provided herein are new aluminum alloy materials which are useful in replacing copper in a heat exchanger. The aluminum alloy materials are also useful in manufacturing components of heating, ventilating, air-conditioning, and refrigeration (HVAC&R) systems for indoor and outdoor units. The alloys are well-suited for tubing in a heat exchanger. The alloys display high strength and good corrosion resistance. Also provided herein are methods for making the aluminum alloy materials.Type: ApplicationFiled: March 3, 2017Publication date: November 30, 2017Applicant: Novelis Inc.Inventors: Jyothi Kadali, Eider Alberto Simielli, Kevin Michael Gatenby
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Patent number: 9546829Abstract: The present invention provides a new aluminum alloy material which may be used for a core alloy of a corrosion-resistant brazing sheet. This core alloy displays with high strength, and good corrosion resistance for use in heat exchangers. This aluminum alloy material was made by direct chill (DC) casting. The present inventions also provides corrosion-resistant brazing sheet packages including the aluminum alloy material as a core and one or more cladding layers.Type: GrantFiled: March 12, 2014Date of Patent: January 17, 2017Assignee: Novelis Inc.Inventors: Andrew D. Howells, Hany Ahmed, Kevin Michael Gatenby, Jyothi Kadali, Pierre Henri Marois
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Publication number: 20160355915Abstract: Described herein are novel aluminum-containing alloys. The alloys are highly formable, exhibit high strength and corrosion resistance, and are recyclable. The alloys can be used in electronics, transportation, industrial, and automotive applications, just to name a few. Also described herein are methods for producing metal ingots and products obtained by the methods.Type: ApplicationFiled: June 3, 2016Publication date: December 8, 2016Applicant: Novelis Inc.Inventors: Jyothi Kadali, Kevin Michael Gatenby, Daehoon Kang, Sazol Kumar Das
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Publication number: 20160040947Abstract: An aluminum alloy fin stock material comprising about 0.9-1.2 wt. % Si, 0.3-0.5 wt. % Fe, 0.20-0.40 wt. % Cu, 1.0-1.5 wt. % Mn, 0-0.1% Mg and 0.0-3.0% Zn, with remainder Al and impurities at ?0.15 wt. %. The aluminum alloy fin stock material is produced in a form of a sheet by a process comprising the steps of direct chill casting an ingot, hot rolling the ingot after the direct chill casting, cold rolling the aluminum alloy to an intermediate thickness, inter-annealing the aluminum alloy cold rolled to an intermediate thickness at a temperature between 200 and 400° C., and cold rolling the material after inter-annealing to achieve % cold work (% CW) of 20 to 40%. The aluminum alloy fin stock material possesses an improved combination of one or more of pre- and/or post-brazes strength, conductivity, sag resistance and corrosion potential. It is useful for fabrication of heat exchanger fins.Type: ApplicationFiled: August 3, 2015Publication date: February 11, 2016Applicant: NOVELIS INC.Inventors: Kevin Michael Gatenby, Hany Ahmed, Andrew D. Howells, Jyothi Kadali
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Publication number: 20150041027Abstract: The present invention provides an aluminum alloy fin stock material with higher strength, and improved sag resistance for use in heat exchangers, such as automotive heat exchangers. The aluminum alloy fin stock material is produced from an aluminum alloy comprising about 0.8-1.4 wt % Si, 0.4-0.8 wt % Fe, 0.05-0.4 wt % Cu, 1.2-1.7 wt % Mn and 1.20-2.3 wt % Zn, with the remainder as Al. The aluminum alloy fin stock material is made by a process comprising direct chill casting the aluminum alloy into an ingot, preheating the ingot, hot rolling the preheated ingot, cold rolling the ingot and inter-annealing at a temperature of 275-400° C. After inter-annealing, the aluminum alloy fin stock material is a cold rolled in a final cold rolling step to achieve % cold work (% CW) of 20-35%.Type: ApplicationFiled: August 7, 2014Publication date: February 12, 2015Applicants: Novelis Inc., Denso CorporationInventors: Andrew D. Howells, Kevin Michael Gatenby, Hany Ahmed, Jyothi Kadali, Derek William Aluia, John Michael Baciak, III
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Publication number: 20140272460Abstract: The present invention provides a new aluminum alloy material which may be used for a core alloy of a corrosion-resistant brazing sheet. This core alloy displays with high strength, and good corrosion resistance for use in heat exchangers. This aluminum alloy material was made by direct chill (DC) casting. The present inventions also provides corrosion-resistant brazing sheet packages including the aluminum alloy material as a core and one or more cladding layers.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: NOVELIS INC.Inventors: ANDREW D. HOWELLS, HANY AHMED, KEVIN MICHAEL GATENBY, JYOTHI KADALI, PIERRE HENRI MAROIS