MannKind also has a pretty successful CEO in Al Mann, who became a billionaire founding multiple companies and selling them. For this investment idea, though, we're more interested in Mann's pocketbook than his wheeling and dealing abilities.

The company is developing a small handheld inhaled insulin product called Afrezza. The drug device has run into multiple roadblocks along the way but seems to be on its final approach toward landing on the market.

Whether Afrezza will be a commercial success depends a lot on how hard the product is marketed by MannKind or its marketing partner -- if it lands one. Diabetics are used to injecting insulin; it's going to take some serious promotion to turn around the mind-set of doctors and patients. Fortunately, Mann has the money to invest.

This is Mann's baby. It's his investment idea. But you're welcome to tag along.

http://www.dailyfinance.com/2013/04/30/3-investment-ideas-for-biotech-investors/