Quarterly report pursuant to Section 13 or 15(d)

8. STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)

v3.7.0.1
8. STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)
3 Months Ended
Jul. 31, 2017
$ / shares
shares
Warrants [Member]  
Number of Warrants exercisable 70,686,837
Five Year Term $0.075 [Member]  
Number of Warrants exercisable 1,056,000
Weighted average remaining contractual term 2 months 8 days
Five Year Term $0.12 [Member]  
Number of Warrants exercisable 35,347,508
Weighted average remaining contractual term 1 year 10 months 28 days
Five Year Term $0.18 [Member]  
Number of Warrants exercisable 19,811,200
Weighted average remaining contractual term 5 months 1 day
Five Year Term $0.11 [Member]  
Number of Warrants exercisable 10,000,000
Weighted average remaining contractual term 2 years 7 months 24 days
Five Year Term $0.065 [Member]  
Number of Warrants exercisable 769,231
Weighted average remaining contractual term 4 years 4 months 20 days
Five Year Term $0.0575 [Member]  
Number of Warrants exercisable 869,565
Weighted average remaining contractual term 4 years 8 months 5 days
Five Year Term $0.03 [Member]  
Number of Warrants exercisable 833,333
Weighted average remaining contractual term 4 years 9 months 25 days
Five Year Term $0.025 [Member]  
Number of Warrants exercisable 2,000,000
Weighted average remaining contractual term 4 years 11 months 26 days
$0.025, $0.03, $0.0575, $0.065. $0.075, $0.11, $0.12 and $0.18 [Member]  
Number of Warrants exercisable 70,686,837
Weighted average remaining contractual term 1 year 8 months 23 days
Weighted average exercise price exercisable | $ / shares $ 0.13