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INTANGIBLE ASSETS, NET (Tables)

12 Months Ended

May 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

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

		May 31,
		2022			2021
Licenses		$	-		$	182,000
Patents			189,000			240,000
Less accumulated amortization-licenses			-			(107,000)
Less accumulated amortization-patents			(19,000)			(20,000)
Intangible asssets, net		$	170,000		$	295,000

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

2023		$	13,000
2024			13,000
2025			13,000
2026			13,000
2027			13,000
Thereafter			105,000
Total		$	170,000

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- References

No definition available.

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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.

+ 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
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

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
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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