6. Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

	Useful    Lives	Cost		Accumulated  Amortization		Net
At June 30, 2020:
Technology, trademarks	5/10 yrs.	$	664,700	$	662,000	$	2,700
Trade names	6 yrs.		140,000		140,000		-
Websites	5 yrs.		210,000		210,000		-
Customer relationships	9/10 yrs.		357,000		321,400		35,600
Sublicense agreements	10 yrs.		294,000		253,600		40,400
Non-compete agreements	5 yrs.		384,000		384,000		-
IPR&D	3 yrs.		110,000		110,000		-
Other intangible assets	5 yrs.		246,600		196,600		50,000
		$	2,406,300	$	2,277,600	$	128,700

	Useful    Lives	Cost		Accumulated  Amortization		Net
At June 30, 2019:
Technology, trademarks	5/10 yrs.	$	663,800	$	661,700	$	2,100
Trade names	6 yrs.		140,000		124,400		15,600
Websites	5 yrs.		210,000		210,000		-
Customer relationships	9/10 yrs.		357,000		308,100		48,900
Sublicense agreements	10 yrs.		294,000		224,100		69,900
Non-compete agreements	5 yrs.		384,000		384,000		-
IPR&D	3 yrs.		110,000		110,000		-
Other intangible assets	5 yrs.		221,700		183,200		38,500
		$	2,380,500	$	2,205,500	$	175,000

Estimated future amortization expense of intangible assets

Year Ended June 30,
2021	$	59,800
2022		36,800
2023		20,200
2024		8,400
2025		3,500
Total	$	128,700