DF

Donald K. Frerichs

AA Abb Technology Ag: 4 patents #35 of 552Top 7%
EV Elsag International B. V.: 1 patents #23 of 48Top 50%
📍 Shaker Heights, OH: #129 of 490 inventorsTop 30%
🗺 Ohio: #15,837 of 73,341 inventorsTop 25%
Overall (All Time): #1,032,698 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7225109 Method and apparatus to diagnose mechanical problems in machinery Frank Toth, Steven J. Johnson 2007-05-29
7113890 Method and apparatus for detecting faults in steam generator system components and other continuous processes Frank Toth 2006-09-26
6865511 Process and device for evaluating the performance of a process control system Roman P. Chaws 2005-03-08
6799143 Process and device for evaluating the performance of a process control system Roman P. Chaws 2004-09-28
5175678 Method and procedure for neural control of dynamic processes Azmi Kaya, Marion A. Keyes, IV 1992-12-29