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Patents and Other Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2022
Patents and Other Intangible Assets  
Schedule of Goodwill

Patents and other intangible assets are summarized as follows:

December 31, 

(in thousands)

    

2022

    

2021

Patents

Patents pending

$

307

$

439

Issued patents

 

815

 

577

 

1,122

 

1,016

Trademarks

 

 

Trademarks pending

 

6

 

3

Registered trademarks

 

95

 

94

 

101

 

97

Other

 

8

 

8

 

1,231

 

1,121

Accumulated amortization

 

(433)

 

(322)

$

798

$

799

Schedule of future amortization expense

Future amortization expense associated with issued patents and registered trademarks as of December 31, 2022 is as follows:

(in thousands)

2023

    

$

147

2024

 

126

2025

 

96

2026

 

61

2027

 

39

Thereafter

 

8

$

477