Note 8 - Goodwill and Patents

9 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

Note

8.

Goodwill and Patents

The Company analyzes its goodwill for impairment annually or at an interim period when events occur or changes in circumstances indicate potential impairment. The result of the analysis performed in the

fourth

quarter ended

September 30, 2017

did

not

indicate an impairment of goodwill. During the

nine

months ended

June 30, 2018,

there were

no

triggering events that indicate potential impairment exists.

The Company capitalizes legal costs incurred to obtain patents. Once accepted by either the U.S. Patent Office or the equivalent office of a foreign country, these legal costs are amortized using the straight-line method over the remaining estimated lives,

not

exceeding

20

years. As of

June 30, 2018,

the Company has

13

patents granted and multiple pending applications both inside and outside the United States.