Note 7 - Stockholders' Equity - Allocation of Recognized Period Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Option [Member]
Allocated Share-based Compensation Expense	$ 0	$ 99,500	$ 0	$ 99,500
General and Administrative Expense [Member]
Change in fair value from modification of warrant terms	25,506		25,506
Allocated Share-based Compensation Expense	34,281	92,000	34,281	92,000
General and Administrative Expense [Member] | Share-based Payment Arrangement, Option [Member]
Change in fair value from modification of option terms	8,775		8,775
Allocated Share-based Compensation Expense		92,000		92,000
Research and Development Expense [Member]
Allocated Share-based Compensation Expense		7,500		7,500
Research and Development Expense [Member] | Share-based Payment Arrangement, Option [Member]
Allocated Share-based Compensation Expense		$ 7,500		$ 7,500