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Condensed Consolidated Statements of Operations - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Condensed Consolidated Statements of Operations        
Sales $ 190,000 $ 0 $ 553,000 $ 0
Cost of goods sold 278,000 180,000 1,008,000 27,000
Gross loss (88,000) (180,000) (455,000) (27,000)
Operating expenses:        
Research and development, net of grants 1,138,000 362,000 2,436,000 1,590,000
General and administrative 1,131,000 1,135,000 4,029,000 3,459,000
Total operating expenses 2,269,000 1,497,000 6,465,000 5,049,000
Loss from operations (2,357,000) (1,677,000) (6,920,000) (5,076,000)
Other income:        
Gain on forgiveness of debt 0 0 251,000 0
Other income 4,000 0 4,000 44,000
Interest income 0 0 0 1,000
Net loss (2,353,000) (1,677,000) (6,665,000) (5,031,000)
Net loss attributed to non-controlling interest 0 0 (1,000) (1,000)
Net loss attributed to common stockholders $ (2,353,000) $ (1,677,000) $ (6,664,000) $ (5,030,000)
Net loss per share - basic $ (0.07) $ (0.06) $ (0.21) $ (0.19)
Net loss per share - fully diluted $ (0.07) $ (0.06) $ (0.21) $ (0.19)
Weighted average number of shares outstanding - basic 31,491,174 27,839,597 31,114,769 27,089,142
Weighted average number of shares outstanding - fully diluted 31,491,174 27,839,597 31,114,769 27,089,142