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Condensed Consolidated Statements of Operations - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Condensed Consolidated Statements of Operations        
Sales $ 0 $ 0 $ 363,000 $ 0
Cost of goods sold 505,000 153,000 730,000 153,000
Gross profit (loss) (505,000) 153,000 (367,000) 153,000
Operating expenses:        
Research and development, net of grants 472,000 418,000 1,298,000 1,228,000
General and administrative 1,565,000 1,171,000 2,898,000 2,324,000
Total operating expenses 2,037,000 1,589,000 4,196,000 3,552,000
Loss from operations (2,542,000) (1,436,000) (4,563,000) (3,399,000)
Other income:        
Other income   44,000   44,000
Gain on forgiveness of debt 251,000   251,000  
Interest income   1,000   1,000
Net loss (2,291,000) (1,391,000) (4,312,000) (3,354,000)
Net loss attributed to noncontrolling interest (1,000) (1,000)   (1,000)
Net loss attributed to common stockholders $ (2,290,000) $ (1,390,000) $ (4,312,000) $ (3,353,000)
Net loss per share - basic and fully diluted $ (0.07) $ (0.05) $ (0.14) $ (0.13)
Weighted average number of shares outstanding - basic and fully diluted 31,314,816 26,712,294 30,922,871 26,709,791