Patents

PATENTS AWARDED

  1. Squaraine Based Dyes and Process for Preparation Thereof.

    Suresh Das, K. G. Thomas, V. Biju, U. Santhosh, and V. Suresh, German Patent No. DE 10196853 (2005).

    United States Patent No. 6,417,402 (2002).

  2. Heavier Halogen Atom Substituted Squaraine Based Dyes, Process for the Preparation thereof and use
    thereof as Sensitizers for Photodynamic, Therapeutical and Industrial Applications.

    D. Ramaiah, K. T. Arun, Suresh Das and B. Epe.

    United States Patent No. 6,770,787 B2 (2004),

  3. Non-visualized permanent information recording substrate for use as security label for authentication.

    Suresh Das and Riju Davis United States Patent No. 6,951,692 (2005).

    K. Das and M. V. George, J. Org. Chem. 1985, 50, 3685-3691.

  4. 2H-Chromenes Annelated at C-C and Methods of Making Use Thereof.

    United States patent No. 8217188, Suresh Das,Bruno Dufour, Mangalam S. Nair, K, V, Radhakrishnan

PATENTS FILED

  1. A Process for the Preparation of Heavier Halogen Atom Substituted Squaraine Based Dyes as Sensitizers for Photodynamic, Therapeutic and Industrial Applications,.

    IPA # 1200 DEL 2000, D. Ramaiah, K. T. Arun, Suresh Das and B. Epe.

  2. Heavier Halogen Atom Substituted Squaraine Based Dyes as Sensitizers for Photodynamic, Therapeutic and Industrial Applications,

    IPA # 1201 DEL 2000; USP # 09/7, 53,751, 2000; GEP # 10065482.7., 2000; D. Ramaiah, K. T. Arun, Suresh Das and B. Epe.

  3. Near Infrared Absorbing Squaraine Dyes Containing Aminoanthracene Chromophores and The Process Thereof for Their Manufacture,

    NF 331/2001; Suresh Das, U. Santhosh, V. Biju, and K. George Thomas.

  4. Novel cholesteric liquid crystal containing photoresponsive butadiene chromophore and a process for the preparation thereof,

    Suresh Das, Shibu Abraham, N. Tamaoki and V. Ajay Mallia; Indian Patent 254577 ; (Japanese Patent – Applcation No. TOKUGAN 2006-310051).

Patents