Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets, Net

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Intangible Assets, Net
 3 Months Ended
Mar. 31, 2024
Finite-Lived Intangible Assets, Net [Abstract]  
Intangible Assets, Net Intangible Assets, Net
Intangible assets, net, consists of the following (in thousands):
March 31,
2024		 December 31,
2023
Patents $ 1,800  $ 1,800 
Research license 375  375 
Customer relationships 4  4 
Total 2,179  2,179 
Less: accumulated amortization (853) (797)
Intangible assets, net $ 1,326  $ 1,382 
The following table represents the total estimated amortization of intangible assets for the five succeeding years and thereafter as of March 31, 2024 (in thousands):
Estimated
 Amortization
 Expense
Nine months ended December 31, 2024 $ 179 
Year ended December 31, 2025 234 
Year ended December 31, 2026 197 
Year ended December 31, 2027 194 
Year ended December 31, 2028 195 
Thereafter 327 
Total $ 1,326 
For the three months ended March 31, 2024 and 2023, amortization expense was approximately $0.1 million and $0.1 million, respectively.