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Intangible Assets, Net
12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net
Note 8 - Intangible Assets, Net
 
   
December 31,
 
   
2022
   
2021
 
   
U.S. Dollars (in thousands)
 
             
Patent registration costs
   
2,135
     
2,038
 
                 
Accumulated amortization
   
1,538
     
1,428
 
                 
Total intangible assets, net
   
597
     
610
 

 

 
Patent registration costs are amortized over their estimated useful life of 10 years.
 
Amortization expense for the years ended December 31, 2022, 2021 and 2020 amounted to $110, $110 and $98, respectively.
 
As of December 31, 2022, the estimated amortization expenses of intangible assets for the years 2023 to 2027 is as follows:
 
Year ended December 31,
 
U.S. Dollars (in thousands)
 
2023
   
107
 
2024
   
99
 
2025
   
92
 
2026
   
78
 
2027
   
68