CK Birla-owned Hyderabad Industries, a manufacturer of cement roofing material, reported a net profit of Rs 6.37 crore in the three months ended December 31, 2010, a decrease of 56 per cent from Rs 14.55 crore in Q3 last year. This is despite a 15.65 per cent rise in sales revenue to Rs 168.87 crore. Total expenditure rose 28.63 per cent pulling down operating profit by 55.24 per cent to Rs 10.07 crore. The board has declared an interim divi-dend of Rs 6 per share of Rs 10 face value for the financial year 2010-11, according to a company filing to the BSE. It has set February 15 as the record date for ascertaining the names of shareholders eligible for interim dividend.