Patents by Inventor Surbhi Mahajan
Surbhi Mahajan 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: 11729909Abstract: A multi-layer coating on an outer surface of a substrate includes a first layer applied directly to the outer surface of the substrate. The first layer includes diamond-like carbon (DLC) configured to mitigate metal whisker formation. A second layer is applied on a top surface of the first layer. The second layer is a conformal coating that includes a second material configured to bind to the top surface of the first layer and fill any microfractures that may form in the first layer. Optionally, a third layer is applied on a top surface of the second layer and includes DLC configured to protect the second layer from oxidation and degradation.Type: GrantFiled: July 20, 2021Date of Patent: August 15, 2023Assignee: Honeywell Federal Manufacturing & Technologies, LLCInventors: Thomas Matthew Selter, Justin Schlitzer, Surbhi Mahajan Du
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Publication number: 20230025748Abstract: A multi-layer coating on an outer surface of a substrate includes a first layer applied directly to the outer surface of the substrate. The first layer includes diamond-like carbon (DLC) configured to mitigate metal whisker formation. A second layer is applied on a top surface of the first layer. The second layer is a conformal coating that includes a second material configured to bind to the top surface of the first layer and fill any microfractures that may form in the first layer. Optionally, a third layer is applied on a top surface of the second layer and includes DLC configured to protect the second layer from oxidation and degradation.Type: ApplicationFiled: July 20, 2021Publication date: January 26, 2023Inventors: Thomas Matthew Selter, Justin Schlitzer, Surbhi Mahajan Du
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Publication number: 20180177147Abstract: Methods and compositions for cultivating plants and artificial plant seeds comprising choplets derived from plantlets grown by tissue culture techniques. Methods comprise production of choplets and artificial seeds comprising choplets which are initiated by the micropropagation of plant tissue source material from plants which may be native or transgenic.Type: ApplicationFiled: April 24, 2015Publication date: June 28, 2018Inventors: Timothy Casper, Sharon L. Haynie, Surbhi Mahajan
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Patent number: 9150789Abstract: The invention is directed to sulfonated aromatic polyesters and methods of making said polymers. These polymers are useful as fibers and other articles. The polymer has a property of increased flame retardancy.Type: GrantFiled: June 12, 2013Date of Patent: October 6, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Justin W. Chan, Michael W Cobb, Surbhi Mahajan, Sharlene Renee Williams
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Patent number: 8779186Abstract: New fluorinated ethers of aromatic acids and diesters are disclosed. These compositions can be applied to, e.g., fibers, yarns, carpets, garments, films, molded parts, paper and cardboard, stone, and tile to impart soil, water and oil resistance. By incorporating the fluorinated ethers of aromatic acids, or diesters thereof, into polymer backbones, more lasting soil, water and oil resistance, as well as improved flame retardance, can be achieved.Type: GrantFiled: September 2, 2010Date of Patent: July 15, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Neville Everton Drysdale, Kenneth Gene Moloy, Joachim C. Ritter, Joel M. Pollino, Surbhi Mahajan Du
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Publication number: 20130338332Abstract: The invention is directed to sulfonated aromatic polyesters and methods of making said polymers. These polymers are useful as fibers and other articles. The polymer has a property of increased flame retardancy.Type: ApplicationFiled: June 12, 2013Publication date: December 19, 2013Inventors: Justin W. Chan, Michael W. Cobb, Surbhi Mahajan, Sharlene Renee Williams
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Patent number: 8450513Abstract: Novel silane compositions have been prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group. The alcohol or diol has a formula weight less than about 5000. The compositions can be used to modify the surfaces of inorganic oxygen-containing materials, including but not limited to silica, silicates, borosilicates, aluminosilicates, days, and metal oxides. Surface treatment of silica nanoparticles with these compositions improves their improved dispersion in polyester nanocomposites.Type: GrantFiled: July 30, 2010Date of Patent: May 28, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Changzai Chi, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
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Patent number: 8383716Abstract: Polyester nanocomposite compositions contain silica nanoparticles that have been subjected to surface treatment with novel trialkoxysilane compositions. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with 1,3-propanediol or certain polyether diols. The silica nanoparticles exhibit improved dispersion in the polyester. This leads to haze reduction and improvements in mechanical properties.Type: GrantFiled: July 30, 2010Date of Patent: February 26, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Changzai Chi, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
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Patent number: 8378061Abstract: Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.Type: GrantFiled: September 1, 2010Date of Patent: February 19, 2013Assignee: E.I. du Pont de Nemours and CompanyInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
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Patent number: 8357743Abstract: A method for making polyester nanocomposite materials by polymerization in the presence of exfoliated fibrous clay nanoparticles includes dispersing the nanoparticles in a mixture of diol, water, and sodium salt before polymerization, thereby improving the dispersion of the nanoparticles in the final nanocomposite. This results in enhanced mechanical properties, such as modulus, in articles made from the nanocomposite.Type: GrantFiled: June 24, 2010Date of Patent: January 22, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Surbhi Mahajan, Nathaniel A. Barney
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Patent number: 8350099Abstract: Disclosed are fluorovinyl ether functionalized aromatic diesters and derivatives thereof. The compounds disclosed have utility as functionalized monomers and comonomers in polyesters, polyamides, and the like. It has been found that incorporation of the monomers into polymers provides improved soil resistance to shaped articles produced from the polymers.Type: GrantFiled: September 1, 2010Date of Patent: January 8, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
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Patent number: 8304513Abstract: Disclosed are polyesters, particularly poly(trimethylene terephthalate), comprising fluorovinylether functionalized aromatic repeat units, and methods to make the polyester polymers. The polymers are useful for imparting soil resistance to polyesters, particularly in the form of fibers, fabrics, and carpets.Type: GrantFiled: September 1, 2010Date of Patent: November 6, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
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Patent number: 8252339Abstract: A method for medical treatment was developed in which microspheres with novel properties are administered in a mammal. The microspheres are made using a novel process that results in microspheres with new combined properties of high density, low fracture, high swell capacity, rapid swell, and deformability following swell. These microspheres may be administered for void filling, tissue bulking, non-vasculature occlusion, body fluid absorption, and delivery of medications.Type: GrantFiled: April 5, 2007Date of Patent: August 28, 2012Assignees: E I du Pont de Nemours and CompanyInventors: Garret D. Figuly, Surbhi Mahajan, Rinaldo S. Schiffino, Sujata K. Bhatia, Elazer R. Edelman, Tarek Michael Shazly, Michael Jordan Feldstein
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Publication number: 20120029148Abstract: Polyester nanocomposite compositions contain silica nanoparticles that have been subjected to surface treatment with novel trialkoxysilane compositions. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with 1,3-propanediol or certain polyether diols. The silica nanoparticles exhibit improved dispersion in the polyester. This leads to haze reduction and improvements in mechanical properties.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
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Publication number: 20120029221Abstract: Novel silane compositions have been prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group. The alcohol or diol has a formula weight less than about 5000. The compositions can be used to modify the surfaces of inorganic oxygen-containing materials, including but not limited to silica, silicates, borosilicates, aluminosilicates, days, and metal oxides. Surface treatment of silica nanoparticles with these compositions improves their improved dispersion in polyester nanocomposites.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
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Publication number: 20120029222Abstract: Silica nanoparticles that have been subjected to surface treatment with novel silane compositions exhibit improved dispersion in polyester nanocomposites. The novel silane compositions are prepared by reacting a 3-isocyanatopropyl trialkoxysilane with an alcohol or diol having a divalent alkylene or alkylene-ether group, where the alcohol or diol has a formula weight less than about 5000. The surface treatment of the nanoparticles leads to improvements in mechanical properties and haze reduction in polyester nanocomposites containing them.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
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Patent number: 8062673Abstract: A method for embolization treatment was developed in which microspheres with novel properties are administered in a mammal. The microspheres are made using a novel process that results in microspheres with new combined properties of high density, low fracture, high swell capacity, rapid swell, and deformability following swell. These microspheres form occlusions with high durability, withstanding over 100 mm Hg (13.3 kPa) of pressure.Type: GrantFiled: April 5, 2007Date of Patent: November 22, 2011Assignee: E I Du Pont de Nemours and CompanyInventors: Garret D. Figuly, Surbhi Mahajan, Rinaldo S. Schiffino, Michael Jordan Feldstein, Tarek Michael Shazly, Elazer R. Edelman
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Publication number: 20110218316Abstract: Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.Type: ApplicationFiled: September 1, 2010Publication date: September 8, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
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Publication number: 20110218317Abstract: Disclosed are polyesters, particularly poly(trimethylene terephthalate), comprising fluorovinylether functionalized aromatic repeat units, and methods to make the polyester polymers. The polymers are useful for imparting soil resistance to polyesters, particularly in the form of fibers, fabrics, and carpets.Type: ApplicationFiled: September 1, 2010Publication date: September 8, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
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Publication number: 20110218353Abstract: Disclosed are fluorovinyl ether functionalized aromatic diesters and derivatives thereof. The compounds disclosed have utility as functionalized monomers and comonomers in polyesters, polyamides, and the like. It has been found that incorporation of the monomers into polymers provides improved soil resistance to shaped articles produced from the polymers.Type: ApplicationFiled: September 1, 2010Publication date: September 8, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter