Patents

3 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Patents

7. Patents

The costs of acquiring or processing patents are capitalized at cost. These amounts are being amortized using the straight-line method over the estimated useful lives of the underlying assets, which is approximately 17 years. Patents, net of accumulated amortization, totaled $773,668 and $757,447 at September 30, 2018 and June 30, 2018, respectively. Amortization expense for the three months ended September 30, 2018 and 2017 was $34,000 and $30,000, respectively. The following is a schedule of estimated future patent amortization expenses by fiscal year as of September 30, 2018:

2019	$	96,335
2020	$	106,103
2021	$	99,932
2022	$	67,385
2023	$	66,315