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Goodwill and Other Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill The carrying value of Goodwill as of both June 30, 2021 and December 31, 2020 was $311.9 million as set forth in the table below:
Carrying Amount
Balance as of December 31, 2020$311,922,787 
Acquisitions— 
Divestitures— 
Impairments— 
Other — 
Balance as of June 30, 2021$311,922,787 
Schedule of Intangible Assets
The patents and intangible assets and related change in carrying values are set forth in the tables below:


As of June 30, 2021:
Other Intangible AssetsGrossAccumulated AmortizationNetAssumed Useful Life
Gentex Patents$38,860,181 $(25,402,803)$13,457,378 Various
Vaporsens Technology Licenses333,850 (58,232)275,618 Various
Other Intangible Assets
HomeLink® Trade Names and Trademarks
$52,000,000 $— $52,000,000 Indefinite
HomeLink® Technology
180,000,000 (116,250,000)63,750,000 12 years
Existing Customer Platforms43,000,000 (33,325,000)9,675,000 10 years
Exclusive Licensing Agreement96,000,000 — 96,000,000 Indefinite
Vaporsens In-Process R&D11,000,000 — 11,000,000 Indefinite
Argil In- Process R&D6,278,132 — 6,278,132 Indefinite
Air-Craftglass In-Process R&D1,250,000 — 1,250,000 Indefinite
Guardian In-Process R&D11,260,429 — 11,260,429 Indefinite
Total Other Intangible Assets$400,788,561 $(149,575,000)$251,213,561 
Total Patents & Other Intangible Assets$439,982,592 $(175,036,035)$264,946,557 

As of December 31, 2020:
Other Intangible Assets
Gross
Accumulated Amortization
Net
Assumed Useful Life
Gentex Patents
$38,625,292 $(24,528,853)$14,096,439 Various
Vaporsens Technology Licenses300,985 (38,856)262,129 Various
Other Intangible Assets
HomeLink® Trade Names and Trademarks
$52,000,000 $— $52,000,000 Indefinite
HomeLink® Technology
180,000,000 (108,750,000)71,250,000 12 years
Existing Customer Platforms43,000,000 (31,175,000)11,825,000 10 years
Exclusive Licensing Agreement
96,000,000 — 96,000,000 Indefinite
    Vaporsens In-Process R&D11,000,000 — 11,000,000 Indefinite
    Argil In-Process R&D6,278,132 — 6,278,132 Indefinite
    Air-Craftglass In-Process R&D1,394,995 — 1,394,995 Indefinite
Total Other Intangible Assets$389,673,127 $(139,925,000)$249,748,127 
Total Patents & Other Intangible Assets$428,599,404 $(164,492,709)$264,106,695