• Filing Date: 2019-07-11
  • Form Type: 10-K
  • Description: Annual report
v3.19.2
Intangibles and Other Assets
12 Months Ended
Apr. 30, 2019
Intangibles and Other Assets [Text Block]
Note 5 Intangibles and Other Assets
   
The following tables presents the major components within intangibles and other assets for the years ended April 30, 2019 and 2018:
 
      April 30, 2019  
            Accumulated        
      Cost     Amortization     Net  
  Patents $  461,637   $  (417,609 ) $  44,028  
  Trademarks   175,100         175,100  
  Other assets   5,667         5,667  
    $  642,404   $  (417,609 ) $  224,795  
 
      April 30, 2018  
            Accumulated        
      Cost     Amortization     Net  
  Patents $  461,637   $  (411,788 ) $  49,849  
  Trademarks   165,462         165,462  
  Other assets   5,751         5,751  
    $  632,850   $  (411,788 ) $  221,062  

During the years ended April 30, 2019 and 2018, the Company recorded amortization expense related to patents of $5,821 and $3,500, respectively. The weighted average remaining amortization period for patents was 11.9 years and 13.2 years for the years ended April 30, 2019 and 2018, respectively.

The following table presents estimated future patent amortization for the next five years:

  Years ended April 30,      
  2020 $  4,248  
  2021   4,248  
  2022   4,248  
  2023   4,248  
  2024   4,248  
  Thereafter   22,788  
    $  44,028