SEATTLE, WA--(Marketwire - August 6, 2012) - ClearSign Combustion Corporation (NASDAQ: CLIR), an emerging leader in combustion and emissions control technology for industrial, commercial and utility markets, today announced its results for the second quarter ended June 30, 2012. The Company incurred losses of $1,020,000 and $1,884,000 for the three months and six months ended June 30, 2012, respectively, as compared to losses of $706,000 and $1,598,000 for the same periods in 2011. Research and development costs totaled $291,000 and $556,000 for the three months and six months ended June 30, 2012, respectively, as compared to $97,000 and $120,000 for the same periods in 2011, reflecting increased personnel levels and research activities in 2012. General and administrative costs increased to $734,000 for the three months ended June 30, 2012 as compared to $610,000 for the same period in 2011, but were reduced