Kenneth J. Hartwein

Schlumberger Technology: 1 patents #3,893 of 7,293Top 55%

SO Shell Offshore: 1 patents #21 of 54Top 40%

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

VG Vetco Gray: 1 patents #168 of 364Top 50%

📍 New Orleans, LA: #346 of 1,220 inventorsTop 30%

🗺 Louisiana: #3,194 of 10,876 inventorsTop 30%

Overall (All Time): #2,330,939 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4834177	Unidirectional filter for hydraulic systems	Charles D. Bridges	1989-05-30
4496009	Through the tubing perforating gun assembly	Raymond W. DerMott	1985-01-29