Note 4 – Intangible Assets

Intangible assets, net consisted of the following:

Amortization expense amounted to $22,298 and $16,469 for the three months ended March 31, 2020 and 2019, respectively. Amortization expense for the succeeding five years and thereafter is $68,967 (2020),  $91,955 (2021-2024) and $922,676 (thereafter).

At March 31, 2020 and December 31, 2019, the Company had capitalized $248,658 and $335,224, respectively, for costs related to patents that have not been awarded.