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Intangible Assets
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets

Note 4. Intangible Assets

 

Intangible assets consist of the following at December 31:

 

   2022   2021 
Patent costs, subject to amortization  $768,000   $768,000 
Less: accumulated amortization   (586,000)   (522,000)
Patent costs, net   182,000    246,000 
Trademarks, not subject to amortization   124,000    124,000 
Total  $306,000   $370,000 

 

 

The amounts carried on the balance sheet represent cost to acquire, legal fees and similar costs relating to the patents incurred by the Company. Amortization is calculated through the expiration date of the patent. The amount charged to expenses for amortization of the patent costs was $64,000 for each of the years ended December 31, 2022 and 2021, respectively.

 

Estimated future amortization expense related to patents as of December 31, 2022, is as follows:

 

   

Total

Amortization

 
Years ending December 31,      
2023   $64,000 
2024    64,000 
2025    49,000 
2026    5,000 
Intangible asset, net of amortization   $182,000