Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Significant Components of Deferred Tax Assets (Details)

v3.21.2
Income Taxes - Schedule of Significant Components of Deferred Tax Assets (Details) - USD ($)
Jul. 31, 2021
Jul. 31, 2020
Income Tax Disclosure [Abstract]    
Net operating loss carryforwards $ 56,369,000 $ 46,623,000
Credits 5,566,000 4,311,000
Start-up costs 17,000 21,000
Accumulated depreciation 74,000 98,000
Option and stock awards 1,179,000 386,000
Other 180,000 122,000
Net deferred tax assets 63,385,000 51,561,000
Valuation allowance for deferred tax assets (63,385,000) (51,561,000)
Net deferred taxes