Share Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation

All stock-based compensation is included in operating expenses for the periods as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Compensation cost recognized:
Selling, general & administrative	$	66,289	$	57,719	$	432,812	$	112,153
Research & development		6,753		6,274		9,969		12,548
	$	73,042	$	63,993	$	442,781	$	124,701

Schedule of Stock Option Activity

Stock option activity under the 2006 and 2015 Stock Option Plans (collectively, the “Plans”) during the periods indicated below were as follows:

	Number of Shares Subject to Issuance			Weighted- average Exercise Price		Weighted- average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 31, 2018		1,072,332		$	1.44	1.85 years	$	881,493
Granted		444,163			2.68
Forfeited or expired		-
Exercised		(79,872	)		2.14
Outstanding at June 30, 2019		1,436,623		$	1.78	2.46 years	$	5,757,618
Exercisable at June 30, 2019		1,078,292		$	1.50	1.85 years	$	4,630,496

Schedule of Restricted Stock Units Outstanding

The compensation expense incurred by the Company for RSUs is based on the closing market price of the Company’s common stock on the date of grant and is amortized ratably on a straight-line basis over the requisite service period and charged to general and administrative expense with a corresponding increase to additional paid-in capital.

	Number of Shares			Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at December 31, 2018		-		$	-	$	-
Granted		5,799			5.01
Vested and settled in shares		(2,000	)		3.53
Outstanding at June 30, 2019		3,799		$	5.79	$	-