6. PATENTS (Tables)

12 Months Ended

Dec. 31, 2012

Patents Tables

Patents

	2012 Cost		Accumulated Amortization		2012 Net
Patents	$	266,451	$	65,939	$	200,512

	2011 Cost		Accumulated Amortization		2011 Net
Patents	$	260,680	$	52,474	$	208,206

Estimated depreciation expense

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

2013	$	12,300
2014		12,300
2015		12,300
2015		12,300
2017		12,300