DH

Dean P. Hemphill

Shell Oil Compny: 6 patents #511 of 4,423Top 15%
Overall (All Time): #895,747 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4616956 Pipeline launching module 1986-10-14
4575280 Underwater trencher with pipelaying guide Paul Robert Scott 1986-03-11
4549836 Ice slot construction Edward H. Phifer 1985-10-29
4523876 Ice slot maintenance 1985-06-18
4493590 Method and apparatus for on surface joining of submarine pipeline segments using an eccentric hinge Ray R. Ayers 1985-01-15
4438754 Method for sensing and remotely controlling a tool to workpiece spatial relationship Walter C. Nanny, Thomas L. Stewart 1984-03-27