Source:- finance.yahoo.com Biotech might be a buzzword right now, but America’s oldest self-made woman billionaire has been in the game for more than half a century. Bio-Rad Laboratories co-founder Alice Schwartz, 92, is number 20 on Forbes’ list of America’s richest self-made women with an estimated net worth of $1.3 billion. Today, Schwartz sits on Bio-Rad’s board of directors and is the company’s largest shareholder, according to Forbes, while her son Norman serves as chairman and chief executive. David Schwartz, Alice Schwartz’s husband and company co-founder, died in