Patents by Inventor Santosh K. Yadav

Santosh K. Yadav 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: 11981567
    Abstract: The present disclosure describes several embodiments for methods of deagglomerating, debundling, and dispersing carbon nanotubes and functionalizing such carbon nanotubes without damage to the properties of the carbon nanotubes.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: May 14, 2024
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Patent number: 11958841
    Abstract: Benzoxazine compounds, methods of making them, polymers made therefrom and methods of polymerizing the benzoxazines. These renewable benzoxazine monomers and polymers that utilize the variety of building blocks found in renewable plant biomass, demonstrate excellent processability and large temperature windows for processing of resin systems.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: April 16, 2024
    Assignees: Drexel University, The United States of America as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John J. LaScala
  • Publication number: 20240092767
    Abstract: Benzoxazine compounds, methods of making them, polymers made therefrom and methods of polymerizing the benzoxazines. These renewable benzoxazine monomers and polymers that utilize the variety of building blocks found in renewable plant biomass, demonstrate excellent processability and large temperature windows for processing of resin systems.
    Type: Application
    Filed: March 24, 2023
    Publication date: March 21, 2024
    Applicants: DREXEL UNIVERSITY, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John J. LaScala
  • Publication number: 20230250260
    Abstract: A composite formulation for use in lightweight molded components includes an untreated low density filler, such as glass bubbles, a solvated polymer mixture, and polymer paste. In one embodiment the solvated polymer mixture is used to treat the low density filler to form a treated low density filler. The solvated polymer mixture many include a thermoplastic resin or a reactive resin and an additive package. The additive package may include a dispersing agent and a silane carrier composition.
    Type: Application
    Filed: March 24, 2023
    Publication date: August 10, 2023
    Inventors: Santosh K. Yadav, Paul A. Rettinger, Cheryl L. Ludwig
  • Publication number: 20230159460
    Abstract: A reaction scheme to synthesize high functional UVS molecules such as 1,2,2,6,6-pentamethylpiperidin-4-yl methacrylate and use 1,2,2,6,6-pentamethylpiperidin-4-yl methacrylate for improved UV stability of a product using UVS additives.
    Type: Application
    Filed: November 22, 2022
    Publication date: May 25, 2023
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Patent number: 11643524
    Abstract: A composite formulation for use in lightweight molded components includes an untreated low density filler, such as glass bubbles, a solvated polymer mixture, and polymer paste. In one embodiment the solvated polymer mixture is used to treat the low density filler to form a treated low density filler. The solvated polymer mixture many include a thermoplastic resin or a reactive resin and an additive package. The additive package may include a dispersing agent and a silane carrier composition.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: May 9, 2023
    Inventors: Santosh K. Yadav, Paul A. Rettinger, Cheryl L. Ludwig
  • Patent number: 11643406
    Abstract: Benzoxazine compounds, methods of making them, polymers made therefrom and methods of polymerizing the benzoxazines. These renewable benzoxazine monomers and polymers that utilize the variety of building blocks found in renewable plant biomass, demonstrate excellent processability and large temperature windows for processing of resin systems.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: May 9, 2023
    Assignees: Drexel University, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John J. LaScala
  • Patent number: 11629220
    Abstract: The present invention relates novel furan based amine cross-linkers with improved thermomechanical and water barrier properties. The novelty of this invention is the use of aromatic, and hydrophobic aliphatic aldehydes to bridge two furfuryl amines, which yields a diamine or tetra amines with a significantly enhanced hydrophobic character. These diamine cross-linkers exhibit enhanced water barrier properties and thermomechanical properties when cured with both commercial and synthetic epoxies.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: April 18, 2023
    Assignees: Drexel Unversity, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John Vergara, John J. LaScala
  • Publication number: 20230112515
    Abstract: Disclosed herein are novel methods to handling carbon nano materials and forming composite materials from carbon nano materials and polymers such as polyurethane and polyurea materials. Such novel methods provide a number of benefits to a polymer processor and end user of any resulting materials or products. As disclosed herein, methods of incorporating carbon nano materials into polymers can achieve benefits regarding electrical properties, modulus, and thermal stability as well as other benefits. However, enhancing and creating such improvements in material properties must be done with care because creating or enhancing one property does not always result in the creation or improvement in other properties. For example, thermal stability, electrical conductivity, and mechanical properties can be optimized in different ways, and at different loadings of differing carbon nano materials.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 13, 2023
    Applicant: Chromaflo Technologies Corporation
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Publication number: 20230103660
    Abstract: The present disclosure describes several embodiments for methods of deagglomerating, debundling, and dispersing carbon nanotubes and functionalizing such carbon nanotubes without damage to the properties of the carbon nanotubes.
    Type: Application
    Filed: May 24, 2022
    Publication date: April 6, 2023
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Publication number: 20230079722
    Abstract: The present disclosure describes embodiments of novel methods and processes for forming CNT dispersions in media using a basket milling process. In particular, the methods and processes disperse CNT without damaging individual particles or affecting the properties of the particles. Testing of such methods demonstrates that recirculatory milling processes can be used to disperse SWNCT effectively and efficiently in a media.
    Type: Application
    Filed: June 16, 2022
    Publication date: March 16, 2023
    Applicant: Chromaflo Technologies Corporation
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Publication number: 20230034630
    Abstract: The present disclosure describes embodiments of novel methods of few layer graphene exfoliation and stabilization using an effective liquid additive package and laminar shear processing regimen. The liquid additive package serves both as a stabilizer and solvent for milling of the dispersion of graphene in media. The novel methods create suitable functionalities on graphene particles and compatibility between the graphene and polymer, which results in stronger interfacial interaction and complete exfoliation. The complete exfoliation of graphene and substantial interfacial interaction between graphene and the polymer matrix have a significant positive impact on the electrical, thermal, and mechanical properties of the composite.
    Type: Application
    Filed: July 25, 2022
    Publication date: February 2, 2023
    Applicant: Chromaflo Technologies Corporation
    Inventors: Santosh K. Yadav, Paul A. Rettinger
  • Publication number: 20220073704
    Abstract: A composite formulation for use in lightweight molded components includes an untreated low density filler, such as glass bubbles, a solvated polymer mixture, and polymer paste. In one embodiment the solvated polymer mixture is used to treat the low density filler to form a treated low density filler. The solvated polymer mixture many include a thermoplastic resin or a reactive resin and an additive package. The additive package may include a dispersing agent and a silane carrier composition.
    Type: Application
    Filed: September 9, 2020
    Publication date: March 10, 2022
    Applicant: Chromaflo Technologies Corp.
    Inventors: Santosh K. Yadav, Paul A. Rettinger, Cheryl L. Ludwig
  • Publication number: 20200216429
    Abstract: Benzoxazine compounds, methods of making them, polymers made therefrom and methods of polymerizing the benzoxazines. These renewable benzoxazine monomers and polymers that utilize the variety of building blocks found in renewable plant biomass, demonstrate excellent processability and large temperature windows for processing of resin systems.
    Type: Application
    Filed: August 21, 2018
    Publication date: July 9, 2020
    Applicants: Drexel University, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John J. LaScala
  • Publication number: 20200181329
    Abstract: A renewable polyimide or polyamic acid formed from a reaction comprising one or more furfurylamine compounds of Formula (I) or Formula (II) and one or more dianhydride or diacid compounds and heating to a temperature of up to 350° C., as well as methods of forming thereof, and polymers comprising the polyimide or polyamic acid compounds. The renewable furan based polyimides which demonstrate excellent processability, large temperature windows for processing of resin systems, and are less toxic.
    Type: Application
    Filed: August 21, 2018
    Publication date: June 11, 2020
    Applicants: Drexel University, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John J. LaScala
  • Publication number: 20200172658
    Abstract: The present invention relates novel furan based amine cross-linkers with improved thermomechanical and water barrier properties. The novelty of this invention is the use of aromatic, and hydrophobic aliphatic aldehydes to bridge two furfuryl amines, which yields a diamine or tetra amines with a significantly enhanced hydrophobic character. These diamine cross-linkers exhibit enhanced water barrier properties and thermomechanical properties when cured with both commercial and synthetic epoxies.
    Type: Application
    Filed: August 21, 2018
    Publication date: June 4, 2020
    Applicants: DREXEL UNIVERSITY, The Government of the United States of America, as represented by The Secretary of the Army
    Inventors: Giuseppe R. Palmese, Santosh K. Yadav, John Vergara, John J. LaScala