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DOWNHOLE PRODUCTS PLC
US9 patents
Top patents by PatentIndex Score
US6401820B1Jun 11, 2002
Downhole tool
DOWNHOLE PRODUCTS PLC116 citations97
US6659173B2Dec 9, 2003
Downhole tool
DOWNHOLE PRODUCTS PLC58 citations95
US6435275B1Aug 20, 2002
Casing centralizer
DOWNHOLE PRODUCTS PLC73 citations95
US5860760AJan 19, 1999
Gripping device
DOWNHOLE PRODUCTS PLC68 citations95
US7096939B2Aug 29, 2006
Slotted expandable centraliser
DOWNHOLE PRODUCTS PLC33 citations91
US6830102B2Dec 14, 2004
Centraliser
DOWNHOLE PRODUCTS PLC44 citations91
US6845816B2Jan 25, 2005
ADI centralizer
DOWNHOLE PRODUCTS PLC35 citations85
US7694733B2Apr 13, 2010
Centralizer
DOWNHOLE PRODUCTS PLC12 citations83
US7743829B2Jun 29, 2010
Cement flow control tool
DOWNHOLE PRODUCTS PLC0 citations51