Patents by Inventor Gabriella Hirschbergne Szejtli

Gabriella Hirschbergne Szejtli 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).

  • Purification of sulfobutylated cyclodextrins with specific ion exchange resins
    Patent number: 11649299
    Abstract: Present invention relates to a process to reduce butane sultone hydrolysis products (4-hydroxybutane-1-sulfonic acid, and bis(4-sulfobutyl) ether disodium) in sulfobutylether cyclodextrin reaction mixtures achieved with the combined use of a strong anion exchange resin having dialkyl 2-hydroxyethyl ammonium hydroxide functionality and a cation exchange resin.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: May 16, 2023
    Assignee: CYCLOLAB CYCLODEXTRIN RESEARCH AND DEVELOPMENT LABORATORY LTD.
    Inventors: Tamas Sohajda, Gabriella Hirschbergne Szejtli, István Puskás
  • PURIFICATION OF SULFOBUTYLATED CYCLODEXTRINS WITH SPECIFIC ION EXCHANGE RESINS
    Publication number: 20220396641
    Abstract: Present invention relates to a process to reduce butane sultone hydrolysis products (4-hydroxybutane-1-sulfonic acid, and bis(4-sulfobutyl) ether disodium) in sulfobutylether cyclodextrin reaction mixtures achieved with the combined use of a strong anion exchange resin having dialkyl 2-hydroxyethyl ammonium hydroxide functionality and a cation exchange resin.
    Type: Application
    Filed: June 10, 2021
    Publication date: December 15, 2022
    Applicant: CYCLOLAB CYCLODEXTRIN RESEARCH AND DEVELOPMENT LABORATORY LTD.
    Inventors: Tamas Sohajda, Gabriella Hirschbergne Szejtli, István Puskás