Patents by Inventor Ragini Das RUPASREE

Ragini Das RUPASREE 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).

  • Organometallic complexes, and organic electroluminescent device and display using the same
    Patent number: 10411199
    Abstract: An organometallic complex represented by Chemical Formula 1: wherein M, CyN, CyC, X1, X2, R1 to R4, R? and n are described in the specification.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: September 10, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CHEIL INDUSTRIES INC.
    Inventors: Chang Ho Noh, O Hyun Kwon, Ragini Das Rupasree, Dmitry Kravchuk, Hyeon Ho Choi
  • ORGANOMETALLIC COMPLEXES, AND ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY USING THE SAME
    Publication number: 20140158998
    Abstract: An organometallic complex represented by Chemical Formula 1: wherein M, CyN, CyC, X1, X2, R1 to R4, R? and n are described in the specification.
    Type: Application
    Filed: June 19, 2013
    Publication date: June 12, 2014
    Inventors: Chang Ho NOH, O Hyun KWON, Ragini Das RUPASREE, Dmitry KRAVCHUK, Hyeon Ho CHOI
  • Electrochromic device
    Patent number: 8446659
    Abstract: An electrochromic device includes a first electrode, a second electrode opposing the first electrode, a first electrochromic layer, a second electrochromic layer, and an electrolyte contacted with the first and second electrochromic layers. The first and second electrochromic layers are positioned between the first electrode and the second electrode and includes different electrochromic materials. The first and second electrochromic layers are simultaneously n-type or simultaneously p-type. The electrochromic device may display transparency and various colors in a single pixel without using plural sub-pixels.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Ho Noh, Seog-Jin Jeon, Ragini Das Rupasree
  • ELECTROCHROMIC DEVICE
    Publication number: 20110292487
    Abstract: An electrochromic device includes a first electrode, a second electrode opposing the first electrode, a first electrochromic layer, a second electrochromic layer, and an electrolyte contacted with the first and second electrochromic layers. The first and second electrochromic layers are positioned between the first electrode and the second electrode and includes different electrochromic materials. The first and second electrochromic layers are simultaneously n-type or simultaneously p-type. The electrochromic device may display transparency and various colors in a single pixel without using plural sub-pixels.
    Type: Application
    Filed: December 16, 2010
    Publication date: December 1, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Chang-Ho NOH, Seog-Jin JEON, Ragini Das RUPASREE