Intangible Assets (Tables)

6 Months Ended

Oct. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

	Estimated useful life	As of October 31, 2015			As of April 30, 2015
Patent rights	15 years	$	2,223,686		$	2,223,686
Less: accumulated amortization			(80,519	)		(20,293	)
Intangible assets, net		$	2,143,167		$	2,203,393