Note 6 - Patents

6 Months Ended

Jun. 30, 2019

Intangible Assets Disclosure [Text Block]

Note 6 – Patents

As of June 30, 2019, and December 31, 2018, the Company recorded the following patent balances:

	June 30, 2019			December 31, 2018
Total Patents	$	77,722		$	77,743
Accumulated Amortization		(68,220	)		(65,951	)
Patent costs, net	$	9,502		$	11,792

During the three ended June 30, 2019 and 2018, the Company recorded $1,455 and $1,134 in amortization expenses respectively. During the six ended June 30, 2019 and 2018, the Company recorded $2,269 and $2,268 in amortization expenses respectively.

Estimated amortization expense as of June 30, 2019 is as follows:

Years ended December 31,
2019 – remaining six months	$	2,268
2020		1,809
2021		1,809
2022 and thereafter		3,616
Total	$	9,502