Patents

9 Months Ended

Mar. 31, 2019

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 $779,621 and $757,447 at March 31, 2019 and June 30, 2018, respectively. Amortization expense for the nine months ended March 31, 2019 and 2018 was $106,000 and $94,000, respectively. The following is a schedule of estimated future patent amortization expenses by fiscal year as of March 31, 2019:

2019	$	34,998
2020		117,217
2021		110,025
2022		72,364
2023		71,273
Thereafter		373,744
	$	779,621