Inventor
HOWLETT PAUL
GB22 patents
⚠️ This page may combine multiple inventors who share the name “HOWLETT PAUL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SPECIALISED PETROLEUM SERV LTD
9 patentsUS6253861B1Jul 3, 2001
Circulation tool
SPECIALISED PETROLEUM SERV LTD337 citations99
US6220357B1Apr 24, 2001
Downhole flow control tool
SPECIALISED PETROLEUM SERV LTD197 citations99
US6227291B1May 8, 2001
Compact well clean up tool with multifunction cleaning apparatus
SPECIALISED PETROLEUM SERV LTD60 citations96
US6152220ANov 28, 2000
Down-hole tool with centralising component
SPECIALISED PETROLEUM SERV LTD64 citations96
US6152221ANov 28, 2000
Apparatus with retractable cleaning members
SPECIALISED PETROLEUM SERV LTD84 citations96
US6497295B1Dec 24, 2002
Torque limiting tool
SPECIALISED PETROLEUM SERV LTD21 citations92
US6343648B1Feb 5, 2002
Down-hole tool with detachable cleaning pads
SPECIALISED PETROLEUM SERV LTD23 citations92
US6302214B1Oct 16, 2001
Apparatus and method for inflating packers in a drilling well
SPECIALISED PETROLEUM SERV LTD27 citations92
US6279657B1Aug 28, 2001
Apparatus and method for circulating fluid in a well bore
SPECIALISED PETROLEUM SERV LTD28 citations92
HOWLETT PAUL
4 patentsUS8511392B2Aug 20, 2013
Downhole swivel sub
HOWLETT PAUL16 citations90
US8191639B2Jun 5, 2012
Downhole swivel sub
HOWLETT PAUL11 citations82
US9115546B2Aug 25, 2015
Drill pipe tubing and casing protector
HOWLETT PAUL5 citations72
US8661877B2Mar 4, 2014
Apparatus and method for testing float equipment
HOWLETT PAUL0 citations51