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7. PATENTS (Tables) | 12 Months Ended
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Sep. 30, 2019
Finite-Lived Intangible Assets, Net [Abstract] |
Schedule of Patents |
|  | 2019 |  |  | 2018 |
Patents |  | $ | 841,397 |  |  | $ | 742,698 |
Accumulated amortization |  |  | (529,811 | ) |  |  | (484,605 | )
Patents, net |  | $ | 311,586 |  |  | $ | 258,093 |
Schedule of total estimated future amortization |
Years ending September 30, |  |  |
2020 |  |  | 51,000 |
2021 |  |  | 48,000 |
2022 |  |  | 44,000 |
2023 |  |  | 33,000 |
2024 |  |  | 26,000 |
Thereafter |  |  | 110,000 |
|  | $ | 312,000 |

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