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Note 6 - Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Weighted Average Number of Shares [Table Text Block]
 
 
For the Six Months
Ended
June 30
,
 
 
 
2019
 
 
2018
 
Net Gain (Loss) attributable to LiqTech International, Inc.
 
$
181,030
 
 
$
(1,796,815
)
Weighted average number of common shares used in basic earnings per share
 
 
18,742,029
 
 
 
13,682,405
 
Effect of dilutive securities, stock options and warrants
 
 
16,079
 
 
 
-
 
Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share
 
 
18,758,108
 
 
 
13,682,405