Patents by Inventor S. Nagaraja Rao

S. Nagaraja Rao 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: 7576201
    Abstract: A compound for electrochromic devices. One such compound of the invention is dihydro-disubstituted phenazine (VI): wherein R9 is and n=1-10.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: August 18, 2009
    Assignee: Ntera Limited
    Inventors: Donald Fitzmaurice, David Cummins, David Corr, S. Nagaraja Rao, Gerrit Boschloo
  • Publication number: 20080167465
    Abstract: A compound for electrochromic devices. One such compound of the invention is dihydro-disubstituted phenazine (VI): wherein R9 is and n=1-10.
    Type: Application
    Filed: February 28, 2008
    Publication date: July 10, 2008
    Inventors: Donald Fitzmaurice, David Cummins, David Corr, S. Nagaraja Rao, Gerrit Boschloo
  • Patent number: 7358358
    Abstract: A compound for use in electrochromic devices. The compound includes (1) ?-(10-phenothiazyl)propoxy phosphonic acid; (2) ?-(10-phenothiazyl)propyl-phosphonic acid; and (3) ?-(10-phenothiazyl)propionate phosphonic acid.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: April 15, 2008
    Assignee: NTERA limited
    Inventors: Donald Fitzmaurice, David Cummins, David Corr, S. Nagaraja Rao, Gerrit Boschloo
  • Patent number: 7270880
    Abstract: The invention concerns discrete electrochromic particles comprising conducting, semiconducting or insulating nanoparticles having one or more electrochromic compounds adsorbed on the surface thereof. These particles may be deposited on an electrode in a single process step at a relatively low temperature, thereby allowing the use of heat-sensitive materials such as plastics as flexible substrates for the electrode.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: September 18, 2007
    Assignee: NTERA Limited
    Inventors: Francois Pichot, Udo Bach, Nigel Leyland, Donald Lupo, David Corr, S. Nagaraja Rao
  • Patent number: 7253940
    Abstract: A nanoporous, nanocrystalline film and electrochromic device. The nanoporous, nanocrystalline film has a conducting metal oxide having an electroactive compound, which is either a p-type or n-type redox promoter or p-type or n-type redox chromophore, absorbed thereto. The electrochromic device has at least one electrode, the at least one electrode having a transparent or translucent substrate bearing an electrically conducting coating, which in turn bears a conducting nanostructured metal oxide film.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: August 7, 2007
    Inventors: Donald Fitzmaurice, David Cummins, David Corr, S. Nagaraja Rao, Gerrit Boschloo
  • Patent number: 6870657
    Abstract: This invention concerns an electochromic device comprising an electrode including a nanostructured metal oxide film, doped to metallic levels of conductivity and optionally modified by chemisorption of an electroactive compound. Such an electrochromic device is suitable for applications where optical modulation is required, such as large area static displays and automatically dimmable rear-view mirrors. The invention also concerns conducting nanostructured metal oxide films and electrodes comprising same and which are suitable for use in the electrochromic device.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: March 22, 2005
    Assignee: University College Dublin
    Inventors: Donald Fitzmaurice, David Cummins, David Corr, S. Nagaraja Rao, Gerrit Boschloo
  • Publication number: 20040056239
    Abstract: A method for the manufacture of an electrochromic system using a nanoporous-nanocrystalline film comprising a semiconducting metallic oxide having a redox chromophore adsorbed thereto.
    Type: Application
    Filed: April 25, 2003
    Publication date: March 25, 2004
    Inventors: Donald Fitzmaurice, S. Nagaraja Rao, Rachel Cinnsealach, Brendan Enright
  • Publication number: 20030201430
    Abstract: An electrochromic system having a first electrode disposed on a transparent or translucent substrate, a second electrode, an electrolyte, an electron donor in solution in the electrolyte, and a nanoporous-nanocrystalline film. The nanoporous-nanocrystalline film has a semiconducting metallic oxide with a redox chromophore adsorbed thereto, intermediate the first and second electrodes.
    Type: Application
    Filed: April 29, 2003
    Publication date: October 30, 2003
    Inventors: Donald Fitzmaurice, S. Nagaraja Rao, Rachel Cinnsealach, Brendan Enright