NOTE 5. INTANGIBLE ASSETS

Intangible assets consist of the following at December 31, 2021:

Intangible assets consist of the following at June 30, 2022:

Amortization expense for the six-month period ended June 30, 2022 and 2021 was $192,732 and $192,732, respectively, and is included in general and administrative expenses in the condensed consolidated statements of operations.

Estimated future amortization expense for device technology intangible assets is as follows:

NOTE 6. INTANGIBLE ASSETS

Intangible assets consist of the following at December 31, 2021:

Intangible assets consist of the following at December 31, 2020:

Amortization expense for the years ended December 31, 2021 and 2020 was $385,464 and $224,854, respectively.

Estimated future amortization expense for device technology intangible assets is as follows: