AC

Alistair Bertram Clark

DP Downhole Products Plc: 5 patents #3 of 7Top 45%
DL Downhole Products Limited: 2 patents #7 of 13Top 55%
Overall (All Time): #749,779 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
7743829 Cement flow control tool Ian Kirk, William Barron 2010-06-29
7694733 Centralizer Ian Kirk, William Barron 2010-04-13
7096939 Slotted expandable centraliser Ian Kirk, William Barron 2006-08-29
6830102 Centraliser Ian Kirk, William Barron 2004-12-14
6435275 Casing centralizer Ian Kirk, William Barron 2002-08-20
6006830 Casing centraliser William Barron, Ian Kirk 1999-12-28
5797455 Casing centraliser William Barron, Ian Kirk 1998-08-25