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INCOME TAXES (Tables)

12 Months Ended

May 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Years ended May 31,	2019			2018
Current:
U.S. Federal	$	--		$	--
Foreign Taxes Subsidiaries		(13,437)			--
State and local		(800)			(800)
Total current		(14,237)			(800)
Deferred:
U.S. Federal		(10,000)			(31,000)
State and local		--			--
Total deferred		(10,000)			(31,000)
Income tax expense	$	(24,237)		$	(31,800)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Years ended May 31,	2019			2018
Computed "expected" tax benefit	$	497,453		$	418,258
Increase (reduction) in income taxes resulting from:
Change in valuation allowance		(910,000)			(114,000)
State income taxes, net of federal benefit		89,267			71,794
Research and development tax credits		55,908			46,602
Permanent tax differences and other		(256,572)			78,795
Foreign taxes of subsidiaries		(13,437)			--
Impact of tax rate changes		--			(533,249)
Income tax expense	$	(24,237)		$	(31,800)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

As of May 31,	2019			2018
Deferred tax assets:
Accounts receivable, principally due to allowance for doubtful accounts	$	18,000		$	15,000
Inventory valuation		12,000			13,000
Compensated absences		48,000			49,000
Net operating loss carryforwards		1,735,000			923,000
Tax credit carryforwards		467,000			385,000
Deferred rent expense		9,000			5,000
Other		176,000			163,000
Accumulated depreciation and amortization		(6,000)			6,000
Total deferred tax assets		2,459,000			1,559,000
Less valuation allowance		(2,459,000)			(1,549,000)
Net deferred tax asset	$	--		$	10,000

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- Definition

Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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