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Note 5 - Patents and Trademarks, Net - Patents and Trademarks, Net (Details) - USD ($) | Nov. 30, 2020 | Aug. 31, 2020
--- | --- | ---
Patents and trademarkes, net | $ 782,423 | $ 802,006
Patents and Trademarks [Member] |  |
Patents and trademarks | 2,938,258 | 2,907,852
Less accumulated amortization | (2,155,835) | (2,105,846)
Patents and trademarkes, net | $ 782,423 | $ 802,006

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