Patents

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Patents

8. Patents

	2019 Cost		Accumulated Amortization		2019 Net
Patents	$	204,102	$	157,526	$	46,576

	2018 Cost		Accumulated Amortization		2018 Net
Patents	$	194,320	$	131,306	$	63,014

Increase in 2019 cost was due to currency conversion. 2019 cost in Canadian dollars - $265,102 (2018 - $265,102 in Canadian dollars).

Amount of amortization for 2019: $16,438 (2018: $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:

2020	$	16,438
2021		16,438
2022		13,700