NOTE 4 – INTANGIBLE ASSETS, net

Intangible assets, net, consists of the following as of:

Patents are amortized using the straight-line method over a period of fifteen years. Amortization expense was $8,733 and $11,262 for the three-months ended March 31, 2020 and 2019, respectively.

The Company has capitalized costs for several patents that are still pending. In those instances, the Company has not recorded any amortization. The Company will commence amortization when these patents are approved.

The Company has 29 issued patents, including 14 in the U.S. and 15 outside the U.S. and one patent pending outside the U.S. that will expire between 2023 and 2028, subject to patent term extensions. The Company also has four additional patents pending that if issued would extend patent coverage in the U.S. and outside the U.S. to 2039-2041.