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v3.20.2

Income Taxes (Details 3) - USD ($) | Jun. 30, 2020 | Jun. 30, 2019
--- | --- | ---
Deferred tax assets: |  |
Net operating loss and credit carryforwards | $ 16,039,000 | $ 16,044,000
Stock-based compensation | 868,000 | 822,000
R&D and other credits | 2,108,000 | 2,014,000
Capitalized R&D expenses | 487,000 | 476,000
Inventories | 218,000 | 156,000
Accrued expenses and other | 99,000 | 111,000
Gross deferred tax assets | 19,819,000 | 19,623,000
Valuation allowance for deferred tax assets | (17,044,000) | (16,725,000)
Total deferred tax assets | 2,775,000 | 2,898,000
Deferred tax liabilities: |  |
Depreciation and other | (390,000) | (277,000)
Intangible assets | (1,726,000) | (1,969,000)
Total deferred tax liabilities | (2,116,000) | (2,246,000)
Net deferred tax asset | $ 659,000 | $ 652,000

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