Sales Concentration

12 Months Ended

Jul. 31, 2012

Risks and Uncertainties [Abstract]

Concentration Risk Disclosure [Text Block]

10. Sales Concentration

Net product sales were $812,000 and $454,000 for the years ended July 31, 2012 and 2011, respectively. For the year ended July 31, 2012, two customers accounted for 67% of our net product sales. No other individual customer accounted for 10% or more of our net product sales. The geographic breakdown of net product sales was as follows:  92% U.S. and 8% foreign. For the year ended July 31, 2011, one customer accounted for 46% of our net product sales. No other individual customer accounted for 10% or more of our net product sales.The geographic breakdown of net product sales was as follows:  87% U.S. and 13% foreign.