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v3.24.1.1.u2

Note 6 - Stockholders' Equity (Details Textual) - USD ($) |  |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 12, 2024 | Dec. 10, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Jun. 28, 2023 | Dec. 31, 2022
Stock Issued During Period Shares, Warrants Exercised (in shares) |  |  | 103,500 |  |  |  |
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share) |  |  | $ 0.5 |  |  |  |
Proceeds from Warrant Exercises |  |  | $ 51,751 | $ 0 |  |  |
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares) |  |  | 3,507,618 | 2,518,798 | 3,098,917 |  | 2,440,673
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | $ 1,400,000 |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  | 2 years 3 months 18 days |  |  |  |
Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | $ 1,100 | $ 7,800 |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | 0 |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | $ (2,100) | (9,400) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 0 |  |  |  |
The 2020 Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  | 4,000,000 |  |  | 11,500,000 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 3 years |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  | 5 years |  |  |  |
Share-Based Payment Arrangement, Amount Capitalized |  |  | $ 175,000 | $ 362,000 |  |  |
Chief Executive Officer, and Other Employees [Member] |  |  |  |  |  |  |
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares) |  |  | 2,979,994 | 2,136,101 |  |  |
Non-Employees [Member] |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 527,624 | 382,697 |  |  |
Territory Manager [Member] | Restricted Stock [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 2 years |  |  |  |
Board of Directors [Member] | Restricted Stock [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  | $ 137,500 | $ 140,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 617,978 |  |  |  |
Share Price (in dollars per share) |  |  | $ 0.89 |  |  |  |
Board of Directors [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 25.00% |  |  |  |
Board of Directors [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 25.00% |  |  |  |
Public Offering [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 4,765,000 |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) |  | $ 0.63 |  |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 2,600,000 |  |  |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 372,110 | 714,750 |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 192,156 |  |  |  |  |  |

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