Note 6 - Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

2020
Intangible Assets	Cost		Accumulated Amortization		Carrying Amount
Patents, Copyrights and Intellectual Property	$	792,821	$	515,665	$	277,156
Licensing Agreement		10,000		10,000		0
Certifications		85,032		73,531		11,501
Totals	$	887,853	$	599,196	$	288,657

2019
Intangible Assets	Cost		Accumulated Amortization		Carrying Amount
Patents, Copyrights and Intellectual Property	$	836,544	$	413,957	$	422,587
Licensing Agreement		10,000		10,000		0
Certifications		83,272		64,682		18,590
Totals	$	929,816	$	488,639	$	441,177

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year Ended
2021	$	108,344
2022		16,852
2023		14,199
2024		10,658
2025		10,658
Thereafter		127,946
Total	$	288,657