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).

  • Patent number: 11729909
    Abstract: 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: Grant
    Filed: July 20, 2021
    Date of Patent: August 15, 2023
    Assignee: Honeywell Federal Manufacturing & Technologies, LLC
    Inventors: Thomas Matthew Selter, Justin Schlitzer, Surbhi Mahajan Du
  • Publication number: 20230025748
    Abstract: 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: Application
    Filed: July 20, 2021
    Publication date: January 26, 2023
    Inventors: Thomas Matthew Selter, Justin Schlitzer, Surbhi Mahajan Du
  • Publication number: 20180177147
    Abstract: 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: Application
    Filed: April 24, 2015
    Publication date: June 28, 2018
    Inventors: Timothy Casper, Sharon L. Haynie, Surbhi Mahajan
  • Patent number: 9150789
    Abstract: 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: Grant
    Filed: June 12, 2013
    Date of Patent: October 6, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Justin W. Chan, Michael W Cobb, Surbhi Mahajan, Sharlene Renee Williams
  • Patent number: 8779186
    Abstract: 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: Grant
    Filed: September 2, 2010
    Date of Patent: July 15, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Kenneth Gene Moloy, Joachim C. Ritter, Joel M. Pollino, Surbhi Mahajan Du
  • Publication number: 20130338332
    Abstract: 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: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Inventors: Justin W. Chan, Michael W. Cobb, Surbhi Mahajan, Sharlene Renee Williams
  • Patent number: 8450513
    Abstract: 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: Grant
    Filed: July 30, 2010
    Date of Patent: May 28, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Changzai Chi, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
  • Patent number: 8383716
    Abstract: 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: Grant
    Filed: July 30, 2010
    Date of Patent: February 26, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Changzai Chi, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
  • Patent number: 8378061
    Abstract: Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: February 19, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Patent number: 8357743
    Abstract: 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: Grant
    Filed: June 24, 2010
    Date of Patent: January 22, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Surbhi Mahajan, Nathaniel A. Barney
  • Patent number: 8350099
    Abstract: 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: Grant
    Filed: September 1, 2010
    Date of Patent: January 8, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Patent number: 8304513
    Abstract: 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: Grant
    Filed: September 1, 2010
    Date of Patent: November 6, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Patent number: 8252339
    Abstract: 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: Grant
    Filed: April 5, 2007
    Date of Patent: August 28, 2012
    Assignees: E I du Pont de Nemours and Company
    Inventors: Garret D. Figuly, Surbhi Mahajan, Rinaldo S. Schiffino, Sujata K. Bhatia, Elazer R. Edelman, Tarek Michael Shazly, Michael Jordan Feldstein
  • Publication number: 20120029148
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
  • Publication number: 20120029221
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
  • Publication number: 20120029222
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CHANGZAI CHI, Gordon Mark Cohen, Surbhi Mahajan, Anilkumar Raghavanpillai
  • Patent number: 8062673
    Abstract: 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: Grant
    Filed: April 5, 2007
    Date of Patent: November 22, 2011
    Assignee: E I Du Pont de Nemours and Company
    Inventors: Garret D. Figuly, Surbhi Mahajan, Rinaldo S. Schiffino, Michael Jordan Feldstein, Tarek Michael Shazly, Elazer R. Edelman
  • Publication number: 20110218316
    Abstract: Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.
    Type: Application
    Filed: September 1, 2010
    Publication date: September 8, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Publication number: 20110218317
    Abstract: 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: Application
    Filed: September 1, 2010
    Publication date: September 8, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Publication number: 20110218353
    Abstract: 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: Application
    Filed: September 1, 2010
    Publication date: September 8, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter