Pittsburgh is filled with people trying to win patents. PPG is at the front of the line. One of an occasional series: Patented in Pittsburgh; The Pittsburgh Post-Gazette, September 20, 2018

Courtney Linder, The Pittsburgh Post-Gazette; Pittsburgh is filled with people trying to win patents. PPG is at the front of the line.
One of an occasional series: Patented in Pittsburgh

"Between 2005 and 2015, PPG was awarded 583 patents, the most in the Pittsburgh region, and certainly enough to warrant the structure PPG has crafted to protect its secrets until it has the force of a U.S. patent seal...

Pittsburgh universities churning out patents 

Between 2008 and 2017, Pittsburgh's research universities have tripled their patent generation and doubled the number of technology licenses granted for commercial use."