Patents Assigned to Defence Research & Development Organization
  • Patent number: 8361590
    Abstract: The present invention relates to a lightweight structural composite, which comprises an inner core of lightweight panel encapsulated by outer layers of polymer material. Specifically, the lightweight panel consists of multiple laminations of corrugated thin metal or fiber reinforced plastic sheets kept in position by polymeric foam and/or adhesive, and enclosed in a casing of the same material. The outer layer is made up of a blend of thermosetting and thermoplastic polymers. The method of forming the composite comprises of stacking the corrugated sheets, filling the interstitial spaces with the foam, constructing the casing, the surface treatment of the panel for good adhesion to the outer polymer layer and the high temperature/pressure encapsulation of the panel with the polymer blend containing curing agents. The composite has application as replacement to wood, concrete or particle board panels used in ship docking, panels for wall, door and windows, blast-proof panels, rail sleepers and shipping pallets.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: January 29, 2013
    Assignee: Defence Research & Development Organization
    Inventors: Bikash Chandra Chakraborty, Manoj Nalanda Rajagopalan, Senthil Kumar Kandhaswamy Srinivasan, Ram Sahay Pandey, Praveen Sreenivasan, Uttam Gopal Suryavanshi, Rohidas Dasharath Raut, Arun Kumar Shah
  • Publication number: 20060235259
    Abstract: A process for the complete destruction of gelled sulphur mustard (SM), comprising the steps of: (a) dissolving gelled sulphur mustard (SM) in organic solvent such as 2-chloroethanol, methanol, methyl cellosolve or mixtures of these to obtain a clear mixture, (b) incinerating the clear gelled sulphur mustard solvent mixture obtained from step (a); (c) dissolving residual gelled SM obtained from step (c) into non-toxic products; (d) chemically converting dissolved SM obtained from step (c) into non-toxic products.
    Type: Application
    Filed: September 18, 2003
    Publication date: October 19, 2006
    Applicant: DEFENCE RESEARCH & DEVELOPMENT ORGANIZATION
    Inventors: Krishnamarthy Sekhar, Ramesh Malhotra, Balwant Batra, Kumaran Ganesan