Patents (Tables)

12 Months Ended

Jul. 31, 2016

Accounting Policies [Abstract]

Costs and accumulated amortization of patents

	July 31,
	2016		2015
Patents	$	—	$	4,705,715
Less: Accumulated amortization		—		3,275,699
Patents, net	$	—	$	1,430,016
Weighted average life		0 years		6.6 years