John R. Castano

Shell Oil Compny: 1 patents #2,223 of 4,423Top 55%

📍 Houston, TX: #12,319 of 21,073 inventorsTop 60%

🗺 Texas: #73,555 of 125,132 inventorsTop 60%

Overall (All Time): #4,083,006 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4248599	Process for determining the API gravity of oil by FID	Pierre R. Mommessin, John G. Rankin, Mary L. Weiss	1981-02-03