Patents by Inventor Violeta Vaitkeviciene

Violeta Vaitkeviciene 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).

  • Polymeric charge transport materials having carbazolyl repeating units
    Patent number: 7329722
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a polymeric charge transport material having the formula where n is a distribution of integers between 1 and 100,000 with an average value of greater than one; Y comprises an aromatic group; and X is a bond or a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods and methods of making the polymeric charge transport material are described.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: February 12, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Violeta Vaitkeviciene, Sauljus Grigalevicius, Juozas V. Grazulevicius, Valentas Gaidelis, Robertas Mald{hacek over (z)}ius, Zbigniew Tokarski, Nusrallah Jubran
  • Polymeric charge transport materials having carbazolyl repeating units
    Publication number: 20060046172
    Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a polymeric charge transport material having the formula where n is a distribution of integers between 1 and 100,000 with an average value of greater than one; Y comprises an aromatic group; and X is a bond or a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods and methods of making the polymeric charge transport material are described.
    Type: Application
    Filed: August 30, 2004
    Publication date: March 2, 2006
    Inventors: Violeta Vaitkeviciene, Sauljus Grigalevicius, Juozas Grazulevicius, Valentas Gaidelis, Robertas Maldzius, Zbigniew Tokarski, Nusrallah Jubran