JD

James P. Degraffenried

PP Phillips Petroleum: 2 patents #574 of 1,401Top 45%
📍 Bartlesville, OK: #504 of 1,143 inventorsTop 45%
🗺 Oklahoma: #3,359 of 12,736 inventorsTop 30%
Overall (All Time): #1,618,649 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6464858 Method for improving the yield of heavy hydrocarbons in a thermal cracking process Ronald E. Brown, Larry E. Reed, Timothy P. Murtha, Gil J. Greenwood, Timothy P. Harper +1 more 2002-10-15
6056870 Method of promoting the decomposition of silicon compounds in a process for depositing silicon upon a metal surface Larry E. Reed, Ronald E. Brown, Timothy P. Murtha, Timothy P. Harper, Mark D. Scharre +1 more 2000-05-02
5656150 Method for treating the radiant tubes of a fired heater in a thermal cracking process Larry E. Reed, Ronald E. Brown, Timothy P. Murtha, Gil J. Greenwood, Timothy P. Harper +1 more 1997-08-12