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Patents and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2022

Patents and Other Intangible Assets

Schedule of Patents and Other Intangible Assets

Patents and other intangible assets are summarized as follows:

​

​	​	​	​	​	​	​	​
​	​	September 30,		​	December 31,		​
(in thousands)		2022			2021
Patents	​	​	​	​	​	​	​
Patents pending	​	$	364	​	$	439	​
Issued patents	​		761	​		577	​
​	​		1,125	​		1,016	​
Trademarks	​		​	​		​	​
Trademarks pending	​		6	​		3	​
Registered trademarks	​		95	​		94	​
​	​		101	​		97	​
Other	​		8	​		8	​
​	​		1,234	​		1,121	​
Accumulated amortization	​		(416)	​		(322)	​
​	​	$	818	​	$	799	​

​

Schedule of future amortization expense

Future amortization expense associated with issued patents and registered trademarks as of September 30, 2022 is as follows:

​

​	​	​	​
(in thousands)	​	​	​
2022 (remaining 3 months)		$	38
2023	​		133
2024	​		111
2025	​		79
2026	​		45
Thereafter	​		34
​	​	$	440

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