5. Washington
most inventive states washington
Engineers at Pacific Northwest National Laboratory are working on cyber security, nuclear technology and clean tech.
Patents per thousand residents: 3.13

Washington has Microsoft (MSFT, Fortune 500), Amazon (AMZN, Fortune 500) and Costco (COST, Fortune 500) driving patents.

A robust life sciences industry is also firing up innovation.

Three of the 21 drugs approved by the FDA in 2010 were discovered and developed in Seattle, according to Chris Rivera, president of Washington Biotechnology & Biomedical Association.

Last year, Seattle Genetics (SGEN) became the first company in 30 years to receive FDA approval for a drug to treat Hodgkin's Lymphoma, and medical device maker Mirabilis Medica has developed a handheld ultrasound device approved for use in Europe, said Rivera.

Finally, the Pacific Northwest National Laboratory, owned by the Department of Energy, employs more than 2,000 scientists and engineers, said Rogers Weed, director with Washington State Department of Commerce. They work on cybersecurity, nuclear technology and clean tech.

Source: Patents per thousands residents, based on U.S. Patent and Trademark Office data as published in the 2012 State Entrepreneurship Index from the University of Nebraska-Lincoln.
  @CNNMoney - Last updated October 26 2012 02:37 PM ET
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