Patents by Inventor Aravinda Raman Rabindranath

Aravinda Raman Rabindranath 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).

  • NOVEL DIKETOPYRROLOPYRROLE POLYMERS
    Publication number: 20110204351
    Abstract: The present invention relates to polymers comprising a repeating unit of the formula (I) and their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).
    Type: Application
    Filed: April 18, 2011
    Publication date: August 25, 2011
    Inventors: Ingo Heim, Bernd Tieke, Roman Lenz, Beat Schmidhalter, Aravinda Raman Rabindranath, Mathias Düggeli
  • Diketopyrrolopyrrole polymers
    Patent number: 7939818
    Abstract: The present invention relates to polymers comprising a repeating unit of the formula (I) their use in electronic devices. The polymers according to the invention have excellent solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: May 10, 2011
    Assignee: BASF SE
    Inventors: Ingo Heim, Bernd Tieke, Roman Lenz, Beat Schmidhalter, Aravinda Raman Rabindranath, Mathias Düggeli
  • Electrochromic films prepared by supramolecular self-assembly
    Publication number: 20110006272
    Abstract: Highly active and durable electrochromic films are prepared with good thickness control in the nanometer range by alternate application of a metal salt solution and a solution of a ?-conjugated polymer having metal complexing side chains, for example, polymers having side chains comprising terpyridine (tpy) groups. Thus a robust, crosslinked organo-metallic network of a known, desired thickness with excellent electroactive properties is readily prepared.
    Type: Application
    Filed: December 17, 2009
    Publication date: January 13, 2011
    Applicant: BASF SE
    Inventors: Bernd Tieke, Anna Maier, Aravinda Raman Rabindranath