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Intangible Assets
6 Months Ended
Oct. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets

(7) Intangible Assets

 

The components of intangible assets, net as of October 31, 2022 and April 30, 2022 consisted of the following:

 

   October 31,
2022
   April 30,
2022
 
   (in thousands) 
Patents  $2,729   $2,729 
Trademarks  $2,769   $2,769 
Tradename  $130   $130 
Customer Relationships  $150   $150 
Intangible assets, gross  $5,778   $5,778 
Accumulated amortization  $(1,721)  $(1,642)
Intangible assets, net  $4,057   $4,136 

 

Amortization expense was approximately $79,000 and $12,000 for the six-month periods ended October 31, 2022 and 2021, respectively. Amortization expense was approximately $40,000 and $6,000 for the three-month periods ended October 31, 2022 and 2021, respectively.