Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies and Estimates (Details Narrative)

v3.21.1
Organization and Summary of Significant Accounting Policies and Estimates (Details Narrative) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Long-lived assets impairment losses  
Shipping and handling costs 30,000 31,000  
Estimated returns net of allowances 0 12,000  
Revenues 1,899,496 1,456,755  
Accrued liabilities 1,869,424   $ 746,738
Warrant [Member]      
Accrued liabilities 51,000   25,000
Warranty costs $ 25,000 27,000  
Patents and Licenses [Member] | Minimum [Member]      
Estimated useful lives 5 years    
Patents and Licenses [Member] | Maximum [Member]      
Estimated useful lives 17 years    
Patents [Member]      
Carrying value $ 172,000   169,000
Accumulated amortization 307,000   303,000
Amortization expense 3,000 3,000  
Future estimated amortization, Remainder of Fiscal Year 11,000    
Future estimated amortization for year ending December 31, 2022 15,000    
Future estimated amortization for year ending December 31, 2023 15,000    
Future estimated amortization for year ending December 31, 2024 14,000    
Future estimated amortization for year ending December 31, 2025 11,000    
Future estimated amortization thereafter 106,000    
License [Member]      
Carrying value 17,000   19,000
Accumulated amortization 402,000   $ 400,000
Amortization expense 2,000 2,000  
Future estimated amortization, Remainder of Fiscal Year 5,000    
Future estimated amortization for year ending December 31, 2022 7,000    
Future estimated amortization for year ending December 31, 2023 5,000    
License Revenue [Member]      
Revenues 478,654  
Collaborative Research Revenue [Member]      
Revenues 45,000  
General, Administrative, Research and Development Expense [Member]      
Shipping and handling costs $ 1,000 $ 2,000