Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Intangible Assets (Tables)

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Note 3 - Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 
   

(unaudited)

         

Patents

  $ 1,601,638     $ 1,530,257  

Trademarks

    18,352       15,794  

Other intangible assets

    1,843,036       1,843,036  
      3,463,026       3,389,087  

Accumulated amortization - patents

    (290,881 )     (272,872 )

Accumulated amortization - other intangible assets

    (570,837 )     (536,149 )
    $ 2,601,308     $ 2,580,066