Note 3 - Patents
|12 Months Ended|
Dec. 31, 2019
|Notes to Financial Statements|
|Intangible Assets Disclosure [Text Block]||
The following table sets forth patents:
The patents were acquired with the
September 30, 2016reverse acquisition. Amortization expense for the next
fivefiscal years and thereafter is expected to be approximately
$80,000annually through the year ended
December 31, 2034.
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef