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INTANGIBLE ASSETS, NET (Tables)

12 Months Ended

May 31, 2019

Disclosure Text Block [Abstract]

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

	2019			2018
Licenses	$	510,600		$	506,685
Patents		68,860			2,800
Less accumulated amortization-patents		(721)			--
Less accumulated amortization-licenses		(471,530)			(410,562)
	$	107,209		$	98,923

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

2020	$	22,051
2021		14,745
2022		5,132
2023		2,839
2024		2,368
Thereafter		60,074
Total	$	107,209

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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-Publisher FASB
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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