PATENTS

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

PATENTS

7. Patents

	2021 Cost		Accumulated Amortization		2021 Net
Patents	$	208,079	$	194,380	$	13,699

	2020 Cost		Accumulated Amortization		2020 Net
Patents	$	208,211	$	178,074	$	30,137

Decrease in 2021 cost was due to currency conversion. 2021 cost in Canadian dollars - $265,102 (2020 - $265,102 in Canadian dollars).

Amount of amortization for 2021: $16,438 (2020 - $16,438) and is included in cost of sales in the consolidated statements of income and comprehensive income.

Estimated amortization expense over the next five years is as follows:

2022 $ 13,699