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Note 7 - Patents
6 Months Ended
Jun. 30, 2021
Notes to Financial Statements  
Goodwill and Intangible Assets Disclosure [Text Block]

NOTE 7 — PATENTS    

 

  

June 30, 2021

 
  Cost  Accumulated Amortization  Net 

Patents-foundation intellectual property

 $1,377,863  $(1,071,319) $306,544 

Total

 $1,377,863  $(1,071,319) $306,544 

 

  

December 31, 2020

 
  Cost  Accumulated Amortization  Net 

Patents-foundation intellectual property

 $1,377,863  $(1,048,614) $329,249 

Total

 $1,377,863  $(1,048,614) $329,249 

 

Patents are amortized utilizing the straight-line method over estimated useful lives ranging from 3 to 20 years. Amortization expense was approximately $11,000 and $22,000 for the three and six months ended June 30, 2021, and  2020, respectively