3. PATENTS

12 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

PATENTS

Patents consist of the following:

	March 31, 2017			March 31, 2016
Patents	$	211,645		$	211,645
Accumulated amortization		(126,649	)		(117,484	)
	$	84,996		$	94,161

Amortization expense for patents for the years ended March 31, 2017 and 2016 approximated $9,000. Future amortization expense on patents is estimated to be approximately $9,000 per year based on the estimated life of the patents. The weighted average remaining life of our patents is approximately 4.0 years.