Geographic information

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Segment Reporting Disclosure [Text Block]

Note 4 — Geographic information

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

Note 20 — Geographic information

Product sales consist of the following:

	December 31, 2012		December 31, 2011
Revenue from U.S. product sales	$	6,179,000	$	5,583,300
Revenue from non-U.S. product sales	$	1,062,400	$	318,800
Total revenue from product sales	$	7,241,400	$	5,902,100