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Patents and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2021
Patents and Other Intangible Assets |
Patents and Other Intangible Assets | Note 4 – Patents and Other Intangible Assets Patents and other intangible assets are summarized as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
(in thousands) |  | 2021 |  | 2020
​ | ​ | ​ | ​ | ​ | ​
Patents | ​ | ​ | ​ | ​ | ​ | ​
Patents pending | ​ | $ | 439 | ​ | $ | 731
Issued patents | ​ |  | 577 | ​ |  | 883
​ | ​ |  | 1,016 | ​ |  | 1,614
Trademarks | ​ |  | ​ | ​ |  | ​
Trademarks pending | ​ |  | 3 | ​ |  | 105
Registered trademarks | ​ |  | 94 | ​ |  | 23
​ | ​ |  | 97 | ​ |  | 128
Other | ​ |  | 8 | ​ |  | 8
​ | ​ |  | 1,121 | ​ |  | 1,750
Accumulated amortization | ​ |  | (322) | ​ |  | (448)
​ | ​ | $ | 799 | ​ | $ | 1,302
​ Future amortization expense associated with awarded patents and registered trademarks as of December 31, 2021 is as follows: ​
​ | ​ | ​ | ​
(in thousands) | ​ | ​ | ​
2022 |  | $ | 117
2023 | ​ |  | 96
2024 | ​ |  | 74
2025 | ​ |  | 42
2026 | ​ |  | 9
Thereafter | ​ |  | 11
​ | ​ | $ | 349
​ The amortization life for patents ranges between three to five years, with trademark lives remaining consistent at ten years. The Company does not amortize patents or trademarks classified as pending. ​ During the year ended December 31, 2021, and 2020, the Company assessed its patent and trademark assets. The Company also evaluated its strategic approach to the pursuit and protection of its intellectual property. It is the intent of the Company to continue to define the scope of pursuing intellectual property protection to be more aligned with core technology critical to the design of product offerings. ​ The Company identified certain assets where the intellectual property was not directly related to the core technology within current products or was loosely affiliated with the core technology. Based on the results of the assessment, the Company impaired $385 thousand of assets previously classified as pending patent costs and $36 thousand of assets previously classified as pending trademark costs. This non-cash expense is reflected in the current year operating results as Research and Development and General and Administrative expenses, respectively. For certain issued patents where the protected intellectual property was not directly aligned with current products, the Company accelerated the amortization by $50 thousand to reduce the financial net carrying value of capitalized patent costs and an additional $40 thousand in accelerated amortization to align trademark net capitalized costs with trademark registration dates.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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