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EP 3 419 928 A1

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(43) Date of publication: 02.01.2019 Bulletin 2019/01 (21) Application number: 17755920.0 (22) Date of filing: 22.02.2017

(51) International Patent Classification (IPC):  C01B 3/06(2006.01) H01M 8/06(2016.01) (86) International application number: PCT/IB2017/051007 (87) International publication number: WO 2017/145068 (31.08.2017 Gazette 2017/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 23.02.2016 IN 201611006254 27.04.2016 IN 201611014687 19.07.2016 IN 201611024746 29.09.2016 IN 201611033369 21.02.2017 IN 201711006186 (71) Applicant: Chairman, Defence Research&Development Organisation New Delhi 110105 (IN)

(72) Inventors: ROY CHOUDHURY, Suman Thane 421506 (IN) PILLAI, Janardhan, Narayanadas Thane 421506 (IN) SOMAIAH, Boddu Thane 421506 (IN) PARETA, Mahendra Thane 421506 (IN) SATVILKAR, Prasad Thane 421506 (IN) KUMAR, Amit Thane 421506 (IN) NEGI, Prem Kant Thane 421506 (IN) MAHTRE, Nitin Nana Thane 421506 (IN) ROY CHOUDHURY, Suhasini Thane 421506 (IN) VERMA, Vaibhav Thane 421506 (IN) DALVI, Vishal Thane 421506 (IN) SINGH, Parvin, Kumar Thane 421506 (IN) SURYAWANSHI, Shivaji, Eknath Thane 421506 (IN) MANDAL, Shambhu, Kumar Thane 421506 (IN) (74) Representative: Robba, Pierpaolo  Interpatent S.R.L. Via Caboto, 35 10129 Torino 10129 Torino (IT)