DG

David A. Gardner

PE Pennwalt: 1 patents #119 of 288Top 45%
IBM: 1 patents #44,794 of 70,183Top 65%
Overall (All Time): #2,331,404 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4840302 Chromium-titanium alloy James G. Ryan, Joseph G. Schaefer, Erick G. Walton 1989-06-20
4255357 Catalytic process for preparing ethyl amines Roger T. Clark 1981-03-10