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v3.21.2

Income Taxes (Details 3) - USD ($) | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and credit carryforwards | $ 13,585,000 | $ 16,039,000
Stock-based compensation | 563,000 | 868,000
R&D and other credits | 2,177,000 | 2,108,000
Capitalized R&D expenses | 564,000 | 487,000
Inventories | 253,000 | 218,000
Accrued expenses and other | 347,000 | 99,000
Gross deferred tax assets | 17,489,000 | 19,819,000
Valuation allowance for deferred tax assets | (15,644,000) | (17,044,000)
Total deferred tax assets | 1,845,000 | 2,775,000
Deferred tax liabilities: |  |
Depreciation and other | (255,000) | (390,000)
Intangible assets | (1,443,000) | (1,726,000)
Total deferred tax liabilities | (1,698,000) | (2,116,000)
Net deferred tax asset | $ 147,000 | $ 659,000

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