Preparation of green colorant from mixed Rare Earth and Molybdenum compounds and process of surface coatings, M. L. P. Reddy, WO/2010/109493

A novel yellow inorganic pigment from samarium and molybdenum compounds and process for the same, M. L. P. Reddy, WO/2010/109473.

Photochromic 2H-chromenes annelated at C5-C6 and their methods of preparation, Inventors- Dr. Suresh Das, Dr Mangalam s Nair, Dr K.V. Radhakrishnan., Dr Bruno Dufour )

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).

Heavier Halogen Atom Substituted Squaraine Based Dyes, Process for the Preparation thereof and use thereof as Sensitizers for Photodynamic, Therapeutical and Industrial Applications, United States Patent No. 6,770,787 B2 (2004), D. Ramaiah, K. T. Arun, Suresh Das and B. Epe

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).

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

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.

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.

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 (1221/DEL/2006) ; (Japanese Patent – Applied ).

Nanocomposite material useful for the preparation of superhydrophobic coating and a process for the preparation thereof – PCT/IN08/00538

White light emitting organogel and process thereof – PCT/IN08/00372

Pyrrole end-capped bipyridine assay powder for selective detection of zinc ions and a process for the preparation thereof – PCT/IN08/00374

A Fluorescent composite film material for security documentation and detection of chlorinated solvent vapors and a process for preparation thereof-0050NF2009 (applied)

A reusable thiophene end capped bipyridine fluorescent assay for the detection of cyanide anions in aqueous and biorelevant samples and a process thereof (applied)