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Note 5 - Patents and Trademarks, Net - Patents and Trademarks, Net (Details) - USD ($) | May 31, 2020 | Aug. 31, 2019
--- | --- | ---
Patents and trademarkes, net | $ 839,535 | $ 1,008,969
Patents and Trademarks [Member] |  |
Patents and trademarks | 2,889,223 | 2,938,876
Less accumulated amortization | (2,049,688) | (1,929,907)
Patents and trademarkes, net | $ 839,535 | $ 1,008,969

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