Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Tables)

v3.19.1
Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of intangible assets
    As of December 31,  
    2018     2017  
Intangible assets: patents   $ 21,604     $ 23,343  
Less: amortization     (1,371 )     (292 )
Total intangible assets, net   $ 20,233     $ 23,051