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INTANGIBLE ASSETS, NET (Tables)

12 Months Ended

May 31, 2018

Disclosure Text Block [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	2018			2017
Patents and licenses	$	509,485		$	509,485
Less accumulated amortization		(410,562)			(335,016)
Intangible Assets, Net	$	98,923		$	174,469

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

2019	$	60,861
2020		20,339
2021		12,694
2022		3,304
2023		900
Thereafter		825
Total	$	98,923

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

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