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Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Corporate Headquarters [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Nov. 30, 2016
Operating Leases, Rent Expense	$ 21,000	$ 21,000
Laboratories and Office Space [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Jun. 30, 2016
Operating Leases, Rent Expense	$ 20,000	22,000
Singapore Office Headquarters in Singapore [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Jan. 30, 2015
Operating Leases, Rent Expense	$ 1,300	1,300
New York Laboratory [Member]
Commitments and Contingencies [Line Items]
Lease Expiration Date	Sep. 30, 2016
Operating Leases, Rent Expense	$ 11,600	$ 11,600