v3.25.2
Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Operating Activities    
Net loss $ (33,100) $ (2,033,600)
Adjustments to reconcile net loss to net cash provided by operating activities    
Depreciation and amortization 3,400 21,700
Stock-based compensation 47,600 1,823,900
Amortization of operating lease right of use-building 38,500 17,600
Inventory reserve 1,100 (59,200)
(Increase) decrease in assets    
Accounts receivable 100,500 22,300
Inventory (23,700) 187,900
Interest receivable 0 (92,300)
Prepaid and other current assets 41,900 17,000
Long-term receivables 219,300 203,300
Increase (decrease) in liabilities    
Accounts payable 86,700 72,700
Accrued expenses 7,200 20,400
Operating lease liability-current (34,100) 53,000
Taxes on income 0 0
Net cash provided by operating activities 455,300 254,700
Investing Activities    
Additions to fixed assets 0 (8,700)
Sale of short-term investment 0 2,162,600
Net cash provided by investing activities 0 2,153,900
Increase in cash and cash equivalents 455,300 2,408,600
Cash and Cash Equivalents    
  Beginning of year 10,839,700 2,269,200
  End of period 11,295,000 4,677,800
Supplemental Disclosure of Non-Cash Investing and Financing Activities:    
    Right of use asset and liability $ 204,500 $ 0