v3.25.1
Note 6 - Intangible Assets (Tables)
6 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
  

March 31, 2025

  

September 30, 2024

 
          

Net

          

Net

 
  

Cost

  

Accumulated

  

Carrying

  

Cost

  

Accumulated

  

Carrying

 
  

Basis

  

Amortization

  

Amount

  

Basis

  

Amortization

  

Amount

 

Finite-Lived Intangible Assets

                        

Patents

 $12,123,750  $   12,123,750  $32,447,460  $(6,699,330)  25,748,130 

Other

  745,947   (382,579)  363,368   745,947   (308,188)  437,759 

Trademarks

  1,095,693   (280,186)  815,507   1,095,693   (225,552)  870,141 

Total finite-lived intangible assets

  13,965,390   (662,765)  13,302,625   34,289,100   (7,233,070)  27,056,030 

Total Intangible Assets

 $13,965,390  $(662,765) $13,302,625  $34,289,100  $(7,233,070) $27,056,030 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years Ended September 30,

 

Future Amortization

 

2025 (6 months)

 $946,979 

2026

  1,888,783 

2027

  1,878,973 

2028

  1,744,360 

2029

  1,739,593 

Thereafter

  5,103,937 

Total Future Amortization

  13,302,625