Northern Technologies (NASDAQ:NTIC) reported quarterly earnings of $0.04 per share which missed the analyst consensus estimate of $0.05 by 20 percent. This is a 42.86 percent decrease over earnings of $0.07 per share from the same period last year. The company reported quarterly sales of $23.309 million which beat the analyst consensus estimate of $20.700 million by 12.60 percent. This is a 9.24 percent increase over sales of $21.338 million the same period last year.