Inventor · disambiguated record
Roger Chancey
Also filed as: CHANCEY ROGER · CHANCEY ROGER D
7 granted patents·1 pending application·170 citations·filing 1982–2005
87Inventor score
Technology areasE21B
Top patents by PatentIndex Score
8 records- 0177US7210710B2Drill stem connectionOMSCO INC·Filed 2004·Granted May 1, 2007·64 cites·37 claims
- 0268US7347287B2Hydraulic timing deviceCHANCEY ROGER·Filed 2005·Granted Mar 25, 2008·14 cites·27 claims
- 0359US4439167AShock absorber assemblyBOWEN TOOLS INC·Filed 1982·Granted Mar 27, 1984·26 cites·7 claims
- 0445US5584353AWell jar accelerator with expansion chamberBOWEN TOOLS INC·Filed 1995·Granted Dec 17, 1996·25 cites·26 claims
- 0539US4387885AShock absorber assembly for absorbing shocks encountered by a drill stringBOWEN TOOLS INC·Filed 1982·Granted Jun 14, 1983·11 cites·11 claims
- 0637US5337840AImproved mud motor system incorporating fluid bearingsINT DRILLING SYSTEMS INC·Filed 1993·Granted Aug 16, 1994·21 cites·26 claims
- 0733US5163513ACircle threadform for marine riser top jointBOWEN TOOLS INC·Filed 1991·Granted Nov 17, 1992·9 cites·11 claims
- 0832US2007074867A1Jar deviceCHANCEY ROGER·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →