Updates-Patents

3rd November, 2026 The Manager, The General Manager, Listing Department, Department of Corporate Services, National Stock Exchange of India Ltd, BSE Limited, Exchange Plaza, 1st Floor, New Trading Ring, Plot No. – C – 1, G Block, Rotunda Building, Bandra – Kurla Complex, P.J. Towers, Bandra (East), Dalal Street, Fort, Mumbai – 400051 Mumbai – 400001 NSE Code – PCBL BSE Code (Equity) – 506590 BSE Code (Debt) – 975353 Dear Sir, Sub:- Updates - Patents We are pleased to inform you that the Company has been granted the patent by the Patent Office, Government of India (vide Patent Number 607860) on 29th October, 2026 (the intimation received on 2nd November, 2026) titled “CARBON BLACK COMPOSITION TO IMPROVE AESTHETIC AND MECHANICAL PROPERTIES OF ELASTOMER COMPOUNDS” for a term of 20 years commencing from the date of filing of the application i.e. 12th day of January, 2020 in accordance with the provisions of the Patents Act, 1970. This patent is related to innovation of novel carbon black composition which offers significant commercial potential in premium tyre and non-tyre applications by providing superior aesthetics, mechanical performance and durability, enabling higher product value, extended service life, improved manufacturing consistency, and enhanced competitiveness in premium market segments. We request you to please take the afore-mentioned information on record and oblige. Yours faithfully, For PCBL CHEMICAL LIMITED Ravi Varma Company Secretary and Compliance Officer