6. PATENTS

6 Months Ended

Jun. 30, 2017

Notes to Financial Statements

6. PATENTS

	June 30, 2017 Cost		Accumulated Amortization		June 30, 2017 Net
Patents	$	204,288	$	116,616	$	87,671

	December 31, 2016 Cost		Accumulated Amortization		December 31, 2016 Net
Patents	$	197,448	$	101,558	$	95,890

Increase in 2017 cost was due to currency conversion. June 30, 2017 cost in Canadian dollars - $265,102 (December 31, 2016 - $265,102 in Canadian dollars).

Amount of amortization for the six months ended June 30, 2017 - $8,219 (2016 - $7,623) and is included in cost of sales in the consolidated statements of operations and comprehensive income (loss).

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

2017	$	16,438
2018		16,438
2019		16,438
2020		16,438
2021		16,438