Stock Options (Tables)

9 Months Ended

May 31, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of assumption used

	Nine Months Ended May 31,
	2022			2021
Expected dividend yield		–			–
Expected stock price volatility		103.31	%		89.44	%
Risk-free interest rate		1.16	%		0.19	%
Expected term (in years)(simplified method)		5.75			4.00
Exercise price	$	6.21		$	3.42
Weighted-average grant date fair-value	$	4.92		$	2.16

Schedule of stock option activity

	Number of Shares Subject to Option Grants			Weighted Average Exercise Price ($)		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value ($)
Outstanding at August 31, 2021		6,740,400			3.97
Grants		140,000			6.21
Forfeitures and cancellations		(98,600	)		4.43
Outstanding at  May 31, 2022		6,781,800			4.01		3.64		122,430
Exercisable at  May 31, 2022		6,590,600			4.00		3.58		115,843

Schedule of share-based compensation

	Three Months Ended May 31,				Nine Months Ended May 31,
Stock compensation expense:	2022		2021		2022		2021
Selling, general and administrative	$	191,122	$	761,654	$	838,309	$	3,617,132
Research and development		21,233		141,544		63,698		588,502
Total	$	212,355	$	903,198	$	902,007	$	4,205,634

Schedule of stock options outstanding and exercisable

	Stock Options Outstanding						Stock Options Exercisable
Range of Exercise Prices	Number of Shares Subject to Outstanding Options		Weighted Average Contractual Life (years)		Weighted Average Exercise Price ($)		Number of Shares Subject To Options Exercise		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price ($)
2.32		153,000		7.36		2.32		131,750		7.36		2.32
2.60		2,500,000		4.09		2.60		2,500,000		4.09		2.60
3.42		50,000		4.39		3.42		12,500		4.39		3.42
3.46		35,000		3.60		3.46		35,000		3.60		3.46
3.54		1,283,800		6.25		3.54		1,206,350		6.45		3.54
3.66		1,000,000		1.25		3.66		1,000,000		1.25		3.66
4.87		150,000		5.48		4.87		150,000		5.48		4.87
6.00		800,000		1.25		6.00		800,000		1.25		6.00
6.21		110,000		9.41		6.21		55,000		9.41		6.21
8.00		700,000		1.25		8.00		700,000		1.25		8.00
Total		6,781,800		3.64		4.01		6,590,600		3.58		4.00