Geographic information (Tables)

3 Months Ended

Mar. 31, 2013

Geographic Areas, Revenues from External Customers [Abstract]

Schedule Of Geographic Information On Revenues [Table Text Block]

Product sales consist of the following:

	March 31,		March 31,
	2013		2012
Revenue from U.S. product sales	$	1,842,800	$	1,493,400
Revenue from non-U.S. product sales	$	410,300	$	193,000
Total revenue from product sales	$	2,253,100	$	1,686,400