Note 6 - Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

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

2018
Intangible Assets	Cost		Accumulated Amortization		Carrying Amount
Patents, Copyrights and Intellectual Property	$	796,080	$	300,528	$	495,552
Licensing Agreement		10,000		10,000		0
Certifications		58,486		58,486		0
Totals	$	864,566	$	369,014	$	495,552

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

Year Ended
2020	$	126,958
2021		126,958
2022		53,469
2023		53,469
2024		46,387
Thereafter		33,936
Total	$	441,177