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Intangible Assets, Net | 3 Months Ended
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Mar. 31, 2025
Intangible Assets, Net [Abstract] |
Intangible assets, net |
| (15) | Intangible assets, net
The acquired intangible assets, all of which are being amortized, have an average useful life of approximately 20 years. Intangible assets consist of the following as of March 31, 2025 and December 31, 2024.
|  | For the year ended March 31, 2025 |
|  | Average useful life |  |  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Technology license |  |  | 20 years |  |  | $ | 98,061 |  |  | $ | 78,691 |  |  | $ | 19,371 |
Customer relationship |  |  | 20 years |  |  |  | 580,489 |  |  |  | 261,220 |  |  |  | 319,269 |
Patent technology |  |  | 20 years |  |  |  | 165,207,671 |  |  |  | 19,387,021 |  |  |  | 145,820,650 |
|  |  |  |  |  | $ | 165,886,221 |  |  | $ | 19,726,932 |  |  | $ | 146,159,289 |
|  | For the year ended December 31, 2024 |
|  | Average useful life |  |  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Technology license |  |  | 20 years |  |  | $ | 97,828 |  |  | $ | 78,439 |  |  | $ | 19,389 |
Customer relationship |  |  | 20 years |  |  |  | 579,107 |  |  |  | 231,643 |  |  |  | 347,464 |
Patent technology |  |  | 20 years |  |  |  | 164,814,319 |  |  |  | 17,124,320 |  |  |  | 147,690,000 |
|  |  |  |  |  | $ | 165,491,254 |  |  | $ | 17,434,402 |  |  | $ | 148,056,852 |
Accumulated amortization expense for intangible assets is $2,272,817 and $2,896,174 for the three-months ended March 31, 2025 and 2024, respectively.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/985-20/tableOfContent + Details
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