Patents by Inventor Anil N Netravali
Anil N Netravali 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: 11963605Abstract: The present disclosure relates to, inter alia, a green technology for crosslinking protein molecules for various uses, where the protein molecules can be contained in protein fibers such as, but not limited to, human hair, animal fibers, and mixtures thereof. In one aspect, the present disclosure relates to a crosslinking agent comprising an oxidized sugar having at least two aldehyde groups. In another aspect, the present disclosure relates to a method of crosslinking protein fibers. This method involves providing the aforementioned crosslinking agent and infiltrating a plurality of non-crosslinked protein fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked protein fibers to become crosslinked, thereby yielding a population of crosslinked protein fibers.Type: GrantFiled: May 28, 2021Date of Patent: April 23, 2024Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Yidong Zhong
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Patent number: 11913164Abstract: The disclosure provides a composition comprising a modified cellulosic surface having aliphatic fatty acid molecules and amine-silica particles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a composition comprising a modified cellulosic surface including low surface energy molecules and amine functionalized nanotubes decorated with silica nanoparticles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a process for increasing hydrophobicity of a cellulosic surface. Also disclosed is a process for increasing hydrophobicity and surface roughness of a cellulosic surface. Also disclosed are products comprising the compositions and modified cellulosic surfaces of the present invention.Type: GrantFiled: May 9, 2022Date of Patent: February 27, 2024Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Yidong Zhong, Namrata V. Patil
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Publication number: 20230000748Abstract: Disclosed is a method of crosslinking hair or other keratin fibers by (i) providing a crosslinking agent comprising an oxidized sugar having at least two aldehyde groups; and (ii) infiltrating a plurality of non-crosslinked hair or other keratin fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked hair or other keratin fibers to become crosslinked, thereby yielding a population of crosslinked hair or other keratin fibers. The protein molecules include amine groups that react with the aldehyde groups of the oxidized sugar to yield the crosslinked hair or other keratin fibers. Also disclosed are formulations for crosslinking hair or other keratin fibers and methods of using the formulations to treat human hair to maintain a desired three dimensional structure. This formulation includes a crosslinking agent having a plurality of oxidized sugars having at least two aldehyde groups or mixture thereof.Type: ApplicationFiled: September 28, 2020Publication date: January 5, 2023Applicant: CORNELL UNIVERSITYInventors: Anil N. NETRAVALI, Namrata V. PATIL
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Patent number: 11530300Abstract: Disclosed is a method of crosslinking protein fibers, including wool fibers, by (i) providing a crosslinking agent including an oxidized sugar mixture having a plurality of different oxidized sugars of different molecular lengths and having at least two aldehyde groups (e.g., oxidized soy flour sugars); and (ii) infiltrating a plurality of non-crosslinked protein fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked protein fibers to become crosslinked. This method yields a population of crosslinked protein fibers, where the protein molecules of the non-crosslinked protein fibers include amine groups that react with the aldehyde groups of the oxidized sugars to achieve the crosslinking of the protein molecules to yield the crosslinked protein fibers.Type: GrantFiled: March 9, 2020Date of Patent: December 20, 2022Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Namrata V. Patil
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Publication number: 20220364301Abstract: The disclosure provides a composition comprising a modified cellulosic surface having aliphatic fatty acid molecules and amine-silica particles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a composition comprising a modified cellulosic surface including low surface energy molecules and amine functionalized nanotubes decorated with silica nanoparticles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a process for increasing hydrophobicity of a cellulosic surface. Also disclosed is a process for increasing hydrophobicity and surface roughness of a cellulosic surface. Also disclosed are products comprising the compositions and modified cellulosic surfaces of the present invention.Type: ApplicationFiled: May 9, 2022Publication date: November 17, 2022Applicant: CORNELL UNIVERSITYInventors: Anil N. NETRAVALI, Yidong ZHONG, Namrata V. PATIL
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Patent number: 11326303Abstract: The disclosure provides a composition comprising a modified cellulosic surface having aliphatic fatty acid molecules and amine-silica particles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a composition comprising a modified cellulosic surface including low surface energy molecules and amine functionalized nanotubes decorated with silica nanoparticles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a process for increasing hydrophobicity of a cellulosic surface. Also disclosed is a process for increasing hydrophobicity and surface roughness of a cellulosic surface. Also disclosed are products comprising the compositions and modified cellulosic surfaces of the present invention.Type: GrantFiled: December 5, 2017Date of Patent: May 10, 2022Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Yidong Zhong, Namrata V. Patil
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Publication number: 20210289906Abstract: The present disclosure relates to, inter alia, a green technology for crosslinking protein molecules for various uses, where the protein molecules can be contained in protein fibers such as, but not limited to, human hair, animal fibers, and mixtures thereof. In one aspect, the present disclosure relates to a crosslinking agent comprising an oxidized sugar having at least two aldehyde groups. In another aspect, the present disclosure relates to a method of crosslinking protein fibers. This method involves providing the aforementioned crosslinking agent and infiltrating a plurality of non-crosslinked protein fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked protein fibers to become crosslinked, thereby yielding a population of crosslinked protein fibers.Type: ApplicationFiled: May 28, 2021Publication date: September 23, 2021Applicant: CORNELL UNIVERSITYInventors: Anil N. NETRAVALI, Yidong ZHONG
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Publication number: 20200207924Abstract: Disclosed is a method of crosslinking protein fibers, including wool fibers, by (i) providing a crosslinking agent including an oxidized sugar mixture having a plurality of different oxidized sugars of different molecular lengths and having at least two aldehyde groups (e.g., oxidized soy flour sugars); and (ii) infiltrating a plurality of non-crosslinked protein fibers with the crosslinking agent under conditions effective to cause protein molecules contained in the non-crosslinked protein fibers to become crosslinked. This method yields a population of crosslinked protein fibers, where the protein molecules of the non-crosslinked protein fibers include amine groups that react with the aldehyde groups of the oxidized sugars to achieve the crosslinking of the protein molecules to yield the crosslinked protein fibers.Type: ApplicationFiled: March 9, 2020Publication date: July 2, 2020Applicant: CORNELL UNIVERSITYInventors: Anil N. NETRAVALI, Namrata V. PATIL
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Patent number: 10179807Abstract: The present invention relates to a method of making a crosslinked thermoset resin. One embodiment of this method comprises: (i) separating a plant-derived flour mixture into a protein fraction comprising proteins and a carbohydrate fraction comprising carbohydrates; (ii) subjecting the carbohydrate fraction to an oxidizing agent to yield oxidized carbohydrates comprising aldehyde functional groups or both aldehyde functional groups and carboxyl functional groups; and (iii) reacting the oxidized carbohydrates with the protein fraction under conditions effective to crosslink the proteins, thereby yielding a crosslinked thermoset resin. The present invention also relates to a crosslinked thermoset resin and composites, nanofiber membranes, and adhesives comprising the crosslinked thermoset resin.Type: GrantFiled: December 9, 2013Date of Patent: January 15, 2019Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Trina Ghosh Dastidar
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Publication number: 20180119334Abstract: The disclosure provides a composition comprising a modified cellulosic surface having aliphatic fatty acid molecules and amine-silica particles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a composition comprising a modified cellulosic surface including low surface energy molecules and amine functionalized nanotubes decorated with silica nanoparticles that are covalently bonded to cellulose fibers of the cellulosic surface. Also disclosed is a process for increasing hydrophobicity of a cellulosic surface. Also disclosed is a process for increasing hydrophobicity and surface roughness of a cellulosic surface,. Also disclosed are products comprising the compositions and modified cellulosic surfaces of the present invention.Type: ApplicationFiled: December 5, 2017Publication date: May 3, 2018Applicant: CORNELL UNIVERSITYInventors: Anil N. Netravali, Yidong Zhong, Namrata V. Patil
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Patent number: 9790350Abstract: The present invention relates to an enhanced starch resin composition, methods of making the enhanced starch resin composition using environmentally benign, water-based processes, and products produced using the enhanced starch resin composition. The enhanced starch resin composition comprises a native starch and/or a waxy starch crosslinked with a multi-functional polycarboxylic acid. The starch resin composition is formed by a water-based reaction comprising using a non-toxic, water-soluble catalyst to catalyze esterification of the native starch and/or the waxy starch with the multi-functional polycarboxylic acid, thereby yielding a crosslinked starch resin composition having at least one enhanced mechanical property and/or reduced moisture absorption as compared to the native starch and/or the waxy starch.Type: GrantFiled: August 1, 2013Date of Patent: October 17, 2017Assignee: CORNELL UNIVERSITYInventors: Anil N. Netravali, Trina Ghosh Dastidar
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Patent number: 9499686Abstract: ‘Green’ composites are fabricated using resins, such as soy-based resins, and reinforced with crystalline high strength bacterial cellulose (BC) fibers. Bacterial cellulose is produced by providing a bacterial cellulose-producing bacterium such as Acetobacter xylinum; providing an inexpensive bacteria nutritional medium; culturing the bacterium in the bacteria nutritional medium under conditions to produce bacterial cellulose; and isolating bacterial cellulose produced by cultured bacteria from the bacteria nutritional medium. The bacteria nutritional medium comprises an inexpensive carbon source that is a plant-based seed extract. The seed extract is derived from a plant-based seed comprising soluble sugars.Type: GrantFiled: September 19, 2013Date of Patent: November 22, 2016Assignee: Cornell UniversityInventors: Anil N. Netravali, Kaiyan Qiu
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Publication number: 20150315249Abstract: The present invention relates to a method of making a crosslinked thermoset resin. One embodiment of this method comprises: (i) separating a plant-derived flour mixture into a protein fraction comprising proteins and a carbohydrate fraction comprising carbohydrates; (ii) subjecting the carbohydrate fraction to an oxidizing agent to yield oxidized carbohydrates comprising aldehyde functional groups or both aldehyde functional groups and carboxyl functional groups; and (iii) reacting the oxidized carbohydrates with the protein fraction under conditions effective to crosslink the proteins, thereby yielding a crosslinked thermoset resin. The present invention also relates to a crosslinked thermoset resin and composites, nanofiber membranes, and adhesives comprising the crosslinked thermoset resin.Type: ApplicationFiled: December 9, 2013Publication date: November 5, 2015Applicant: CORNELL UNIVERSITYInventors: Anil N. NETRAVALI, Trina GHOSH DASTIDAR
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Publication number: 20150203667Abstract: The present invention relates to an enhanced starch resin composition, methods of making the enhanced starch resin composition using environmentally benign, water-based processes, and products produced using the enhanced starch resin composition. The enhanced starch resin composition comprises a native starch and/or a waxy starch crosslinked with a multi-functional polycarboxylic acid. The starch resin composition is formed by a water-based reaction comprising using a non-toxic, water-soluble catalyst to catalyze esterification of the native starch and/or the waxy starch with the multi-functional polycarboxylic acid, thereby yielding a crosslinked starch resin composition having at least one enhanced mechanical property and/or reduced moisture absorption as compared to the native starch and/or the waxy starch.Type: ApplicationFiled: August 1, 2013Publication date: July 23, 2015Applicant: CORNELL UNIVERSITYInventors: Anil N. Netravali, Trina Ghosh Dastidar
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Publication number: 20140083327Abstract: ‘Green’ composites are fabricated using resins, such as soy-based resins, and reinforced with crystalline high strength bacterial cellulose (BC) fibers. Bacterial cellulose is produced by providing a bacterial cellulose-producing bacterium such as Acetobacter xylinum; providing an inexpensive bacteria nutritional medium; culturing the bacterium in the bacteria nutritional medium under conditions to produce bacterial cellulose; and isolating bacterial cellulose produced by cultured bacteria from the bacteria nutritional medium. The bacteria nutritional medium comprises an inexpensive carbon source that is a plant-based seed extract. The seed extract is derived from a plant-based seed comprising soluble sugars.Type: ApplicationFiled: September 19, 2013Publication date: March 27, 2014Applicant: Cornell UniversityInventors: Anil N. Netravali, Kaiyan Qiu
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Patent number: 8633787Abstract: A microelectromechanical structure (MEMS) device includes a secondary MEMS element displaceably coupled to a substrate. A primary MEMS element is displaceably coupled to the secondary MEMS element and has a resonant frequency substantially equal to the secondary MEMS element and has a much larger displacement than the secondary MEMS element.Type: GrantFiled: September 21, 2007Date of Patent: January 21, 2014Assignee: Cornell Research Foundation, Inc.Inventors: Shahyaan Desai, Anil N. Netravali, Michael O. Thompson
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Patent number: 8541001Abstract: ‘Green’ composites are fabricated using resins, such as soy-based resins, and reinforced with crystalline high strength bacterial cellulose (BC) fibers. Bacterial cellulose is produced by providing a bacterial cellulose-producing bacterium such as Acetobacter xylinum; providing an inexpensive bacteria nutritional medium; culturing the bacterium in the bacteria nutritional medium under conditions to produce bacterial cellulose; and isolating bacterial cellulose produced by cultured bacteria from the bacteria nutritional medium. The bacteria nutritional medium comprises an inexpensive carbon source that is a plant-based seed extract. The seed extract is derived from a plant-based seed comprising soluble sugars.Type: GrantFiled: May 17, 2010Date of Patent: September 24, 2013Assignee: Cornell UniversityInventors: Anil N. Netravali, Kaiyan Qiu
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Publication number: 20120135234Abstract: A fibrous product is described that comprises biodegradable fibers on a substrate. The fibers originate from a deposition solution that comprises a protein-based component and a carrier polymer component, each configured so that the resulting deposition solution can be deposited using electro-deposition techniques. In one embodiment, the proteins in the deposition solution are denatured in a manner that modifies the viscosity of the resulting deposition solution so that the deposition solution is compatible with electro-spinning.Type: ApplicationFiled: May 18, 2010Publication date: May 31, 2012Inventors: Anil N. Netravali, Yong Lak Joo, Daehwan Cho, Olivia Nnadi
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Publication number: 20120129228Abstract: ‘Green’ composites are fabricated using resins, such as soy-based resins, and reinforced with crystalline high strength bacterial cellulose (BC) fibers. Bacterial cellulose is produced by providing a bacterial cellulose-producing bacterium such as Acetobacter xylinum; providing an inexpensive bacteria nutritional medium; culturing the bacterium in the bacteria nutritional medium under conditions to produce bacterial cellulose; and isolating bacterial cellulose produced by cultured bacteria from the bacteria nutritional medium. The bacteria nutritional medium comprises an inexpensive carbon source that is a plant-based seed extract. The seed extract is derived from a plant-based seed comprising soluble sugars.Type: ApplicationFiled: May 17, 2010Publication date: May 24, 2012Inventors: Anil N. Netravali, Kaiyan Qiu
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Patent number: 8182918Abstract: Strengthened soy protein based biodegradable composition comprises plasticized or unplasticized cured soy protein strengthened with green strengthening agent. Green strengthening agents include nanoclay, microfibrillated cellulose, nanofibrillated cellulose, cured green polysaccharide and green fibers, filaments, yarns, and fabrics and combinations of these. These can be fabricated into composites.Type: GrantFiled: April 20, 2006Date of Patent: May 22, 2012Assignee: Cornell Research Foundation, IncInventors: Anil N Netravali, Xiaosong Huang, Preeti Lodha, Yuzo Yamamoto