Patents by Inventor Tsvetanka Filipova

Tsvetanka Filipova 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).

  • Publication number: 20230295456
    Abstract: The present disclosure relates to photo-curable resins, and, more particularly, to 3D-printable, surface-eroding, acrylic anhydride-based resins, including both acrylated and methacrylated chemistries. In a preferred embodiment, the resins compositions are degradeable. The disclosure also provides methods of preparing the photo-curable resins and embodiments of degradeable objects comprised of the photo-curable resins.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 21, 2023
    Inventors: WHYTNEIGH DUFFIE, TRAVIS WALKER, TSVETANKA FILIPOVA, TIMOTHY BRENZA, KEVIN BARZ
  • Patent number: 10221117
    Abstract: The present invention provides monomers, analogs, and/or derivatives of bisphenols substituted with one or more fluoromethyl groups. These monomers, analogs, and/or derivatives can be used to form oligomers and/or polymers, which in turn can be used to make compounds with dielectric properties suitable for dielectric materials, including for example, use in energy dense capacitors. In a preferred embodiment, the compounds can comprise a polycarbonate of a homopolymer, copolymer, and/or terpolymer of a bisphenol with one or more fluoromethyl substitution groups. In an aspect of the invention the compounds chosen can be selected based on various desired characteristics, including, for example, their energy density, glass transition temperature, dielectric loss, and/or dipole density.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 5, 2019
    Assignee: South Dakota Board of Regents
    Inventors: David A. Boyles, John T. Bendler, Tsvetanka Filipova
  • Publication number: 20170369409
    Abstract: The present invention provides monomers, analogs, and/or derivatives of bisphenols substituted with one or more fluoromethyl groups. These monomers, analogs, and/or derivatives can be used to form oligomers and/or polymers, which in turn can be used to make compounds with dielectric properties suitable for dielectric materials, including for example, use in energy dense capacitors. In a preferred embodiment, the compounds can comprise a polycarbonate of a homopolymer, copolymer, and/or terpolymer of a bisphenol with one or more fluoromethyl substitution groups. In an aspect of the invention the compounds chosen can be selected based on various desired characteristics, including, for example, their energy density, glass transition temperature, dielectric loss, and/or dipole density.
    Type: Application
    Filed: August 23, 2017
    Publication date: December 28, 2017
    Inventors: DAVID A. BOYLES, JOHN T. BENDLER, TSVETANKA FILIPOVA
  • Patent number: 7687584
    Abstract: The present invention relates to a miscible transparent polymer blend, specifically, a polycarbonate blend which comprises homopolycarbonates and/or copolycarbonates. In particular, high aspect ratio monomers confer unique miscibility properties on polycarbonates. Miscible, transparent blends have been found to form from polycarbonate mixtures containing as components of the mixture (1) polycarbonates of bisphenol A monomers copolymerized with a variety of bisphenols, and (2) polycarbonates containing high aspect ratio monomers.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: March 30, 2010
    Assignee: South Dakota School of Mines and Technology
    Inventors: David A. Boyles, John T. Bendler, Tsvetanka Filipova
  • Publication number: 20080021177
    Abstract: The present invention relates to a miscible transparent polymer blend, specifically, a polycarbonate blend which comprises homopolycarbonates and/or copolycarbonates. In particular, high aspect ratio monomers confer unique miscibility properties on polycarbonates. Miscible, transparent blends have been found to form from polycarbonate mixtures containing as components of the mixture (1) polycarbonates of bisphenol A monomers copolymerized with a variety of bisphenols, and (2) polycarbonates containing high aspect ratio monomers.
    Type: Application
    Filed: July 24, 2006
    Publication date: January 24, 2008
    Inventors: David A. Boyles, John T. Bendler, Tsvetanka Filipova