20-year stealth battle continues

CNN 4 hours ago 

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(CNN)Decades after the U.S. Air Force unveiled one if its first stealth combat planes, the B-2 bomber, lawyers are still arguing over the origins and legal ownership of the technology that allows pilots to fly virtually undetected by enemy radar. On February 19, a federal appeals court ordered a hearing to determine whether the Pentagon infringed on a patent owned by Zoltek, a materials company from St. Louis, when it developed the stealthy coating for the F-22 fighter plane and B-2 bomber. In the latest development in a case that has spanned nearly 20 years, the ruling reversed a Federal Claims Court judge's 2014 decision that sided with the U.S. government by determining that Zoltek's patent was invalid. ...