GT

Grant K. Tappen

General Motors: 3 patents #4,693 of 18,328Top 30%
Ford: 1 patents #9,341 of 17,473Top 55%
Overall (All Time): #1,229,677 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8585547 System and method for preventing icing in positive crankcase ventilation systems Thomas A. Spix 2013-11-19
7284528 Crank shaft support assembly Robert Jay Natkin, Bret Allen Oltmans, John E. Allison, Thomas J. Heater, Joy Adair Hines +1 more 2007-10-23
6732699 Cast iron cylinder liner with laser-hardened flange fillet Shekhar G. Wakade, Paul N. Crepeau 2004-05-11
6715458 Engine block crankshaft bearings 2004-04-06