Patents by Inventor Yenamandra Viswanath
Yenamandra Viswanath 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: 10669224Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: GrantFiled: February 19, 2018Date of Patent: June 2, 2020Assignee: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Yenamandra Viswanath
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Publication number: 20180273461Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: ApplicationFiled: February 19, 2018Publication date: September 27, 2018Applicant: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Yenamandra Viswanath
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Patent number: 9926255Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: GrantFiled: October 7, 2016Date of Patent: March 27, 2018Assignee: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Yenamandra Viswanath, Brian Albert, Steven A. Cohen
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Patent number: 9670125Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions comprise a dibasic acid as a crystalline solid and further comprise a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: GrantFiled: March 30, 2015Date of Patent: June 6, 2017Assignee: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Yenamandra Viswanath
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Publication number: 20170096383Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: ApplicationFiled: October 7, 2016Publication date: April 6, 2017Applicant: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Yenamandra Viswanath, Brian Albert, Steven A. Cohen, Thomas E. Snead, Demond L. Gildon
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Patent number: 9487463Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: GrantFiled: September 30, 2014Date of Patent: November 8, 2016Assignee: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Yenamandra Viswanath
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Patent number: 9328055Abstract: Systems and methods are disclosed for refining natural oil feedstocks. In some embodiments, the methods comprise transesterifying glycerides in a natural oil feedstock to provide a transesterified product comprising monounsaturated fatty acid esters and polyunsaturated fatty acid esters. In some embodiments, the methods comprise separating the polyunsaturated fatty acid esters from the monounsaturated fatty acid esters (or vice versa), to provide a separated monounsaturated fatty acid ester composition having a ratio of at least 10 parts by weight of monounsaturated fatty acid esters for every 1 part by weight of polyunsaturated fatty acid esters.Type: GrantFiled: March 16, 2015Date of Patent: May 3, 2016Assignee: Elevance Renewable Sciences, Inc.Inventors: Chander Balakrishnan, Yenamandra Viswanath, Efimia Metsi-Guckel, Mary Bjorklund, Yongyou Hu, Jason Bronkema
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Publication number: 20150274630Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions comprise a dibasic acid as a crystalline solid and further comprise a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: ApplicationFiled: March 30, 2015Publication date: October 1, 2015Applicant: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Yenamandra Viswanath
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Publication number: 20150266802Abstract: Systems and methods are disclosed for refining natural oil feedstocks. In some embodiments, the methods comprise transesterifying glycerides in a natural oil feedstock to provide a transesterified product comprising monounsaturated fatty acid esters and polyunsaturated fatty acid esters. In some embodiments, the methods comprise separating the polyunsaturated fatty acid esters from the monounsaturated fatty acid esters (or vice versa), to provide a separated monounsaturated fatty acid ester composition having a ratio of at least 10 parts by weight of monounsaturated fatty acid esters for every 1 part by weight of polyunsaturated fatty acid esters.Type: ApplicationFiled: March 16, 2015Publication date: September 24, 2015Applicant: ELEVANCE RENEWABLE SCIENCES, INC.Inventors: Chander Balakrishnan, Yenamandra Viswanath, Efima Metsi-Guckel, Mary Bjorklund, Yongyou Hu, Jason Bronkema
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Publication number: 20150119602Abstract: High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.Type: ApplicationFiled: September 30, 2014Publication date: April 30, 2015Applicant: Elevance Renewable Sciences, Inc.Inventors: Alpeshkumar K. Patel, Brian Pease, Bradon J. Dreyer, Brian Albert, Colin Huie, Yenamandra Viswanath, Purvi Kapasi, Chander Balakrishnan, Steven A. Cohen, Thomas E. Snead, Demond L. Gildon
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Publication number: 20140336398Abstract: Methods are provided for refining natural oil feedstocks. The methods include reacting the feedstock with a low-molecular-weight olefin or mid-weight olefin in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product including olefins and esters. In certain embodiments, the methods further include separating the olefins from the esters in the metathesized product. In certain embodiments, the methods further include transesterifying the esters in the presence of an alcohol to form a transesterified product.Type: ApplicationFiled: April 15, 2014Publication date: November 13, 2014Applicant: ELEVANCE RENEWABLE SCIENCES, INC.Inventors: Steven A. Cohen, Melvin L. Luetkens, JR., Chander Balakrishnan, Robert Snyder, Yenamandra Viswanath, Efimia Metsi-Guckel, Robin Weitkamp
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Patent number: 8735640Abstract: Methods are provided for refining natural oil feedstocks. The methods comprise reacting the feedstock with a low-molecular-weight olefin or mid-weight olefin in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product comprising olefins and esters. In certain embodiments, the methods further comprise separating the olefins from the esters in the metathesized product. In certain embodiments, the methods further comprise transesterifying the esters in the presence of an alcohol to form a transesterified product.Type: GrantFiled: October 9, 2012Date of Patent: May 27, 2014Assignee: Elevance Renewable Sciences, Inc.Inventors: Steven A. Cohen, Melvin L. Luetkens, Jr., Chander Balakrishnan, Robert Snyder, Yenamandra Viswanath, Efimia Metsi-Guckel, Robin Weitkamp
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Publication number: 20130035502Abstract: Methods are provided for refining natural oil feedstocks. The methods comprise reacting the feedstock with a low-molecular-weight olefin or mid-weight olefin in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product comprising olefins and esters. In certain embodiments, the methods further comprise separating the olefins from the esters in the metathesized product. In certain embodiments, the methods further comprise transesterifying the esters in the presence of an alcohol to form a transesterified product.Type: ApplicationFiled: October 9, 2012Publication date: February 7, 2013Inventors: Steven A. Cohen, Melvin L. Luetkens, Jr., Chander Balakrishnan, Robert Snyder, Yenamandra Viswanath, Efimia Metsi-Guckel, Robin Weitkamp
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Patent number: 7378544Abstract: The present invention relates to the liquid phase oxidation of aromatic hydrocarbons in the presence of at least one heavy metal oxidation catalyst and bromine, which is activated by at least one of anthracene or another polycyclic aromatic compound to produce aromatic carboxylic acids.Type: GrantFiled: November 3, 2004Date of Patent: May 27, 2008Assignee: BP Corporation North America Inc.Inventors: Wayne P. Schammel, Victor A. Adamian, Yenamandra Viswanath, Igor V. Zakharov
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Publication number: 20050137420Abstract: The present invention relates to the liquid phase oxidation of aromatic hydrocarbons in the presence of at least one heavy metal oxidation catalyst and bromine, which is activated by at least one of anthracene or another polycyclic aromatic compound to produce aromatic carboxylic acids.Type: ApplicationFiled: November 3, 2004Publication date: June 23, 2005Inventors: Wayne Schammel, Victor Adamian, Yenamandra Viswanath, Igor Zakharov
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Patent number: 6495710Abstract: The synthesis of dimethyl-1,5-naphthalenedicarboxylate and polymers and articles formed therefrom is disclosed, as well as applications for dimethyl-1,5-naphthalenedicarboxylate, its corresponding acid 1,5-NDA, and various synthesis intermediates.Type: GrantFiled: January 12, 2001Date of Patent: December 17, 2002Assignee: BP Corporation North America Inc.Inventors: John A. Macek, Bruce I. Rosen, Juergen K. Holzhauer, John S. Bramlet, Larry D. Lillwitz, David J. Schneider, Lawrence L. Lang, Edward E. Paschke, John M. Weis, Yenamandra Viswanath, Stefanos L. Sakellarides
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Publication number: 20010031852Abstract: The synthesis of dimethyl-1,5-naphthalenedicarboxylate and polymers and articles formed therefrom is disclosed, as well as applications for dimethyl-1,5-naphthalenedicarboxylate, its corresponding acid 1,5-NDA, and various synthesis intermediates.Type: ApplicationFiled: January 12, 2001Publication date: October 18, 2001Inventors: John A. Macek, Bruce I. Rosen, Juergen K. Holzhauer, John S. Bramlet, Larry D. Lillwitz, David J. Schneider, Lawrence L. Lang, Edward E. Paschke, John M. Weis, Yenamandra Viswanath, Stefanos L. Sakellarides
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Patent number: 5977426Abstract: A method for recovering crystalline 2,6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components, LM, having melting points of 70.degree. F. and below, and high melting components (HM), including 2,6-dimethylnaphthalene, having melting points above 70.degree. F, such that: ##EQU1## where HM is the total weight percent of high melting components, including 2,6-dimethylnaphthalene, in the mixture, and LM is the total weight percent of low melting components in the mixture, and where T is the temperature of the crystallization in degrees Fahrenheit, and where A is at least 1.0.Type: GrantFiled: October 20, 1997Date of Patent: November 2, 1999Assignee: BP Amoco CorporationInventors: Thomas G. Smith, John M. Weis, Yenamandra Viswanath
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Patent number: 5510563Abstract: A method for recovering crystalline 2,6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components, LM, having melting points of 70.degree. F. and below, and high melting components (HM), including 2,6-dimethylnaphthalene, having melting points above 70.degree. F., such that: ##EQU1## where HM is the total weight percent of high melting components, including 2,6-dimethylnaphthalene, in the mixture, and LM is the total weight percent of low melting components in the mixture, and where T is the temperature of the crystallization in degrees Fahrenheit, and where A is at least 1.0.Type: GrantFiled: December 29, 1993Date of Patent: April 23, 1996Assignee: Amoco CorporationInventors: Thomas G. Smith, John M. Weis, Yenamandra Viswanath