Patents

6 Months Ended

Dec. 31, 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 $763,044 and $757,447 at December 31, 2018 and June 30, 2018, respectively. Amortization expense for the six months ended December 31, 2018 and 2017 was $70,000 and $61,000, respectively. The following is a schedule of estimated future patent amortization expenses by fiscal year as of December 31, 2018:

2019	$	67,325
2020		109,566
2021		102,374
2022		68,695
2023		67,625
Thereafter		347,459
	$	763,044