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Patents and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

Patents and other intangible assets are summarized as follows:

		March 31,			December 31,
		2017			2016
		(unaudited)
Patents
Patents pending		$	1,080,000		$	1,040,000
Issued patents			806,000			747,000
			1,886,000			1,787,000
Trademarks
Trademarks pending			29,000			23,000
Registered trademarks			23,000			23,000
			52,000			46,000
Other			8,000			8,000
			1,946,000			1,841,000
Accumulated amortization			(154,000)			(106,000)
		$	1,792,000		$	1,735,000

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Future amortization expense associated with issued patents and registered trademarks as of March 31, 2017 is estimated as follows:

2017		$	149,000
2018			198,000
2019			179,000
2020			91,000
2021			30,000
Thereafter			28,000
		$	675,000