Inventor · disambiguated record
Sigmund Askestad
Also filed as: ASKESTAD SIGMUND
20 granted patents·1 pending application·98 citations·filing 1992–2017
92Inventor score
Files withAPL TECH AS6NORSK HYDRO AS6ASKESTAD SIGMUND3NAT OILWELL VARCO NORWAY AS3ADVANCED PROD & LOADING AS1
Top patents by PatentIndex Score
21 records- 0184US5359957ATurret for drilling or production shipNORSK HYDRO AS·Filed 1992·Granted Nov 1, 1994·35 cites·16 claims
- 0267US10851923B2Ball joint for connecting a riser subjected to high tensile and angular loads to a pipe connector on a floating unitAPL TECH AS·Filed 2017·Granted Dec 1, 2020·1 cites·18 claims
- 0362US10633935B2Device for termination of a riser in a floating structureAPL TECH AS·Filed 2017·Granted Apr 28, 2020·1 cites·12 claims
- 0461US10422456B2Tube connector for detachably connecting two connector parts for gas-tight connecting of riser tubes to vesselsAPL TECH AS·Filed 2013·Granted Sep 24, 2019·2 cites·6 claims
- 0561US10167059B2Chain stopperNAT OILWELL VARCO NORWAY AS·Filed 2014·Granted Jan 1, 2019·1 cites·14 claims
- 0658US7775175B2Mooring pull-in systemADVANCED PROD & LOADING AS·Filed 2006·Granted Aug 17, 2010·2 cites·10 claims
- 0753US8196666B2Flexible riser and method for pulling-in and hanging up thereofASKESTAD SIGMUND·Filed 2006·Granted Jun 12, 2012·5 cites·8 claims
- 0853US6869325B1Rotating tower system for transferring hydrocarbons to a shipSTATOIL ASA·Filed 2000·Granted Mar 22, 2005·5 cites·10 claims
- 0951US10281076B2Coupler device and method for using the sameNAT OILWELL VARCO NORWAY AS·Filed 2013·Granted May 7, 2019·0 cites·17 claims
- 1050US10228018B2Bearing arrangementNAT OILWELL VARCO NORWAY AS·Filed 2016·Granted Mar 12, 2019·0 cites·16 claims
- 1148US6431102B1Apparatus for guiding and stopping an anchor chain on a floating structureNORSKE STATS OLJESELSKAP·Filed 1999·Granted Aug 13, 2002·14 cites·11 claims
- 1247US10759501B2Exchangeable rail system for large turret bearingAPL TECH AS·Filed 2017·Granted Sep 1, 2020·0 cites·20 claims
- 1346US10787232B2Structural suspension of radial turret bearingsAPL TECH AS·Filed 2017·Granted Sep 29, 2020·0 cites·14 claims
- 1443US11072397B2Suspension of turret bearing unitsAPL TECH AS·Filed 2017·Granted Jul 27, 2021·0 cites·18 claims
- 1542US5482484AApparatus for offshore swivel replacementNORSK HYDRO AS·Filed 1993·Granted Jan 9, 1996·7 cites·20 claims
- 1641US8813668B2Device for rotating turntableASKESTAD SIGMUND·Filed 2011·Granted Aug 26, 2014·0 cites·15 claims
- 1738US6138598AMethod and means to direct an anchored floating structure against the direction of the waves in open seaNORSK HYDRO AS·Filed 1996·Granted Oct 31, 2000·6 cites·11 claims
- 1838US2006082135A1Device for connecting pipelinesASKESTAD SIGMUND·Filed 2003·Application pending·0 cites
- 1937US5336020ASupport and connection device for flexible riserNORSK HYDRO AS·Filed 1992·Granted Aug 9, 1994·11 cites·18 claims
- 2033US5419398ADrive system for turning a swivelNORSK HYDRO AS·Filed 1993·Granted May 30, 1995·8 cites·20 claims
- 2120US6202586B1AnchorNORSK HYDRO AS·Filed 1997·Granted Mar 20, 2001·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →